AMEREN CORPORATION has sponsored the creation of one or more 401k plans.
| Measure | Date | Value |
|---|
| 2023 : AMEREN RETIREMENT PLAN 2023 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2023-12-31 | $120,498,154 |
| Total unrealized appreciation/depreciation of assets | 2023-12-31 | $120,498,154 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $244,858,967 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $243,295,978 |
| Total income from all sources (including contributions) | 2023-12-31 | $547,881,820 |
| Total loss/gain on sale of assets | 2023-12-31 | $-54,030,656 |
| Total of all expenses incurred | 2023-12-31 | $282,045,878 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2023-12-31 | $265,545,328 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2023-12-31 | $188 |
| Value of total assets at end of year | 2023-12-31 | $4,709,766,277 |
| Value of total assets at beginning of year | 2023-12-31 | $4,442,367,346 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2023-12-31 | $16,500,550 |
| Total interest from all sources | 2023-12-31 | $58,178,515 |
| Total dividends received (eg from common stock, registered investment company shares) | 2023-12-31 | $13,722,280 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2023-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2023-12-31 | $4,105,535 |
| Was this plan covered by a fidelity bond | 2023-12-31 | Yes |
| Value of fidelity bond cover | 2023-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2023-12-31 | Yes |
| Amount of non-exempt transactions with any party-in-interest | 2023-12-31 | $4,973 |
| Assets. Other investments not covered elsewhere at end of year | 2023-12-31 | $331,120,121 |
| Assets. Other investments not covered elsewhere at beginning of year | 2023-12-31 | $275,567,929 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2023-12-31 | $30,546,477 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2023-12-31 | $46,147,008 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2023-12-31 | $244,860,274 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2023-12-31 | $243,297,285 |
| Other income not declared elsewhere | 2023-12-31 | $7,523,038 |
| Administrative expenses (other) incurred | 2023-12-31 | $5,932,394 |
| Liabilities. Value of operating payables at end of year | 2023-12-31 | $-1,307 |
| Liabilities. Value of operating payables at beginning of year | 2023-12-31 | $0 |
| Total non interest bearing cash at end of year | 2023-12-31 | $3,088 |
| Total non interest bearing cash at beginning of year | 2023-12-31 | $5,974,115 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2023-12-31 | No |
| Value of net income/loss | 2023-12-31 | $265,835,942 |
| Value of net assets at end of year (total assets less liabilities) | 2023-12-31 | $4,464,907,310 |
| Value of net assets at beginning of year (total assets less liabilities) | 2023-12-31 | $4,199,071,368 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2023-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2023-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2023-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2023-12-31 | $188,778,458 |
| Assets. partnership/joint venture interests at beginning of year | 2023-12-31 | $201,724,365 |
| Investment advisory and management fees | 2023-12-31 | $8,671,704 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2023-12-31 | $315,885,565 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2023-12-31 | $265,823,561 |
| Value of interest in pooled separate accounts at end of year | 2023-12-31 | $60,002,850 |
| Value of interest in pooled separate accounts at beginning of year | 2023-12-31 | $69,995,675 |
| Interest earned on other investments | 2023-12-31 | $2,742,340 |
| Income. Interest from US Government securities | 2023-12-31 | $33,064,526 |
| Income. Interest from corporate debt instruments | 2023-12-31 | $22,180,813 |
| Value of interest in common/collective trusts at end of year | 2023-12-31 | $1,593,354,263 |
| Value of interest in common/collective trusts at beginning of year | 2023-12-31 | $1,547,918,835 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2023-12-31 | $-45,422,048 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2023-12-31 | $3,958,562 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2023-12-31 | $3,958,562 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2023-12-31 | $190,836 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2023-12-31 | $165,896,660 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2023-12-31 | $323,008,358 |
| Asset value of US Government securities at end of year | 2023-12-31 | $994,049,448 |
| Asset value of US Government securities at beginning of year | 2023-12-31 | $859,029,911 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2023-12-31 | $45,956,470 |
| Net investment gain/loss from pooled separate accounts | 2023-12-31 | $-9,992,826 |
| Net investment gain or loss from common/collective trusts | 2023-12-31 | $302,736,104 |
| Net gain/loss from 103.12 investment entities | 2023-12-31 | $63,290,553 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2023-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2023-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2023-12-31 | No |
| Contributions received in cash from employer | 2023-12-31 | $188 |
| Income. Dividends from common stock | 2023-12-31 | $9,616,745 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2023-12-31 | $265,545,328 |
| Asset. Corporate debt instrument preferred debt at end of year | 2023-12-31 | $339,739,916 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2023-12-31 | $283,013,148 |
| Asset. Corporate debt instrument debt (other) at end of year | 2023-12-31 | $138,905,354 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2023-12-31 | $114,156,687 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2023-12-31 | $596,906,125 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2023-12-31 | $446,049,192 |
| Liabilities. Value of benefit claims payable at end of year | 2023-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2023-12-31 | $-1,307 |
| Did the plan have assets held for investment | 2023-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2023-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2023-12-31 | No |
| Aggregate proceeds on sale of assets | 2023-12-31 | $2,098,390,570 |
| Aggregate carrying amount (costs) on sale of assets | 2023-12-31 | $2,152,421,226 |
| Opinion of an independent qualified public accountant for this plan | 2023-12-31 | Unqualified |
| Accountancy firm name | 2023-12-31 | CROWE LLP |
| Accountancy firm EIN | 2023-12-31 | 350921680 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2023-01-01 | $120,498,154 |
| Total unrealized appreciation/depreciation of assets | 2023-01-01 | $120,498,154 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-01-01 | $244,858,967 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-01-01 | $243,295,978 |
| Total income from all sources (including contributions) | 2023-01-01 | $547,881,820 |
| Total loss/gain on sale of assets | 2023-01-01 | $-54,030,656 |
| Total of all expenses incurred | 2023-01-01 | $282,045,878 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2023-01-01 | $265,545,328 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2023-01-01 | $188 |
| Value of total assets at end of year | 2023-01-01 | $4,709,766,277 |
| Value of total assets at beginning of year | 2023-01-01 | $4,442,367,346 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2023-01-01 | $16,500,550 |
| Total interest from all sources | 2023-01-01 | $58,178,515 |
| Total dividends received (eg from common stock, registered investment company shares) | 2023-01-01 | $13,722,280 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2023-01-01 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2023-01-01 | $4,105,535 |
| Was this plan covered by a fidelity bond | 2023-01-01 | Yes |
| Value of fidelity bond cover | 2023-01-01 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2023-01-01 | Yes |
| Amount of non-exempt transactions with any party-in-interest | 2023-01-01 | $4,973 |
| Assets. Other investments not covered elsewhere at end of year | 2023-01-01 | $331,120,121 |
| Assets. Other investments not covered elsewhere at beginning of year | 2023-01-01 | $275,567,929 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2023-01-01 | $30,546,477 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2023-01-01 | $46,147,008 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2023-01-01 | $244,860,274 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2023-01-01 | $243,297,285 |
| Other income not declared elsewhere | 2023-01-01 | $7,523,038 |
| Administrative expenses (other) incurred | 2023-01-01 | $5,932,394 |
| Liabilities. Value of operating payables at end of year | 2023-01-01 | $-1,307 |
| Liabilities. Value of operating payables at beginning of year | 2023-01-01 | $0 |
| Total non interest bearing cash at end of year | 2023-01-01 | $3,088 |
| Total non interest bearing cash at beginning of year | 2023-01-01 | $5,974,115 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2023-01-01 | No |
| Value of net income/loss | 2023-01-01 | $265,835,942 |
| Value of net assets at end of year (total assets less liabilities) | 2023-01-01 | $4,464,907,310 |
| Value of net assets at beginning of year (total assets less liabilities) | 2023-01-01 | $4,199,071,368 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2023-01-01 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2023-01-01 | No |
| Were any leases to which the plan was party in default or uncollectible | 2023-01-01 | No |
| Assets. partnership/joint venture interests at end of year | 2023-01-01 | $188,778,458 |
| Assets. partnership/joint venture interests at beginning of year | 2023-01-01 | $201,724,365 |
| Investment advisory and management fees | 2023-01-01 | $8,671,704 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2023-01-01 | $315,885,565 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2023-01-01 | $265,823,561 |
| Value of interest in pooled separate accounts at end of year | 2023-01-01 | $60,002,850 |
| Value of interest in pooled separate accounts at beginning of year | 2023-01-01 | $69,995,675 |
| Interest earned on other investments | 2023-01-01 | $2,742,340 |
| Income. Interest from US Government securities | 2023-01-01 | $33,064,526 |
| Income. Interest from corporate debt instruments | 2023-01-01 | $22,180,813 |
| Value of interest in common/collective trusts at end of year | 2023-01-01 | $1,593,354,263 |
| Value of interest in common/collective trusts at beginning of year | 2023-01-01 | $1,547,918,835 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2023-01-01 | $-45,422,048 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2023-01-01 | $190,836 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2023-01-01 | $165,896,660 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2023-01-01 | $323,008,358 |
| Asset value of US Government securities at end of year | 2023-01-01 | $994,049,448 |
| Asset value of US Government securities at beginning of year | 2023-01-01 | $859,029,911 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2023-01-01 | $45,956,470 |
| Net investment gain/loss from pooled separate accounts | 2023-01-01 | $-9,992,826 |
| Net investment gain or loss from common/collective trusts | 2023-01-01 | $302,736,104 |
| Net gain/loss from 103.12 investment entities | 2023-01-01 | $63,290,553 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2023-01-01 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2023-01-01 | No |
| Has the plan failed to provide any benefit when due under the plan | 2023-01-01 | No |
| Contributions received in cash from employer | 2023-01-01 | $188 |
| Income. Dividends from common stock | 2023-01-01 | $9,616,745 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2023-01-01 | $265,545,328 |
| Asset. Corporate debt instrument preferred debt at end of year | 2023-01-01 | $339,739,916 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2023-01-01 | $283,013,148 |
| Asset. Corporate debt instrument debt (other) at end of year | 2023-01-01 | $138,905,354 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2023-01-01 | $114,156,687 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2023-01-01 | $596,906,125 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2023-01-01 | $446,049,192 |
| Liabilities. Value of benefit claims payable at end of year | 2023-01-01 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2023-01-01 | $-1,307 |
| Did the plan have assets held for investment | 2023-01-01 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2023-01-01 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2023-01-01 | No |
| Aggregate proceeds on sale of assets | 2023-01-01 | $2,098,390,570 |
| Aggregate carrying amount (costs) on sale of assets | 2023-01-01 | $2,152,421,226 |
| Opinion of an independent qualified public accountant for this plan | 2023-01-01 | 1 |
| Accountancy firm name | 2023-01-01 | CROWE LLP |
| Accountancy firm EIN | 2023-01-01 | 350921680 |
| 2022 : AMEREN RETIREMENT PLAN 2022 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2022-12-31 | $-401,854,321 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-12-31 | $-20,946,859 |
| Total unrealized appreciation/depreciation of assets | 2022-12-31 | $-422,801,180 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $243,295,978 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $366,475,471 |
| Total income from all sources (including contributions) | 2022-12-31 | $-1,507,962,212 |
| Total loss/gain on sale of assets | 2022-12-31 | $-645,351,459 |
| Total of all expenses incurred | 2022-12-31 | $271,251,937 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2022-12-31 | $255,492,316 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2022-12-31 | $2,600,000 |
| Value of total assets at end of year | 2022-12-31 | $4,442,367,346 |
| Value of total assets at beginning of year | 2022-12-31 | $6,344,760,988 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-12-31 | $15,759,621 |
| Total interest from all sources | 2022-12-31 | $51,789,226 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-12-31 | $14,497,950 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2022-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2022-12-31 | $4,690,250 |
| Administrative expenses professional fees incurred | 2022-12-31 | $1,932,177 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2022-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2022-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2022-12-31 | Yes |
| Value of fidelity bond cover | 2022-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2022-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2022-12-31 | $275,567,929 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-12-31 | $431,874,537 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-12-31 | $46,147,008 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-12-31 | $92,597,271 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-12-31 | $243,297,285 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-12-31 | $362,922,642 |
| Other income not declared elsewhere | 2022-12-31 | $8,785,719 |
| Administrative expenses (other) incurred | 2022-12-31 | $4,261,045 |
| Liabilities. Value of operating payables at end of year | 2022-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2022-12-31 | $3,552,829 |
| Total non interest bearing cash at end of year | 2022-12-31 | $5,974,115 |
| Total non interest bearing cash at beginning of year | 2022-12-31 | $4,454 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2022-12-31 | No |
| Value of net income/loss | 2022-12-31 | $-1,779,214,149 |
| Value of net assets at end of year (total assets less liabilities) | 2022-12-31 | $4,199,071,368 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-12-31 | $5,978,285,517 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2022-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2022-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2022-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2022-12-31 | $201,724,365 |
| Assets. partnership/joint venture interests at beginning of year | 2022-12-31 | $171,503,095 |
| Investment advisory and management fees | 2022-12-31 | $9,566,399 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2022-12-31 | $265,823,561 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2022-12-31 | $372,968,680 |
| Value of interest in pooled separate accounts at end of year | 2022-12-31 | $69,995,675 |
| Value of interest in pooled separate accounts at beginning of year | 2022-12-31 | $58,135,035 |
| Interest earned on other investments | 2022-12-31 | $2,512,205 |
| Income. Interest from US Government securities | 2022-12-31 | $30,082,203 |
| Income. Interest from corporate debt instruments | 2022-12-31 | $19,158,032 |
| Value of interest in common/collective trusts at end of year | 2022-12-31 | $1,547,918,835 |
| Value of interest in common/collective trusts at beginning of year | 2022-12-31 | $2,114,115,093 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2022-12-31 | $3,958,562 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2022-12-31 | $-10,789,595 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2022-12-31 | $-10,789,595 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-12-31 | $36,786 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2022-12-31 | $323,008,358 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2022-12-31 | $419,962,539 |
| Asset value of US Government securities at end of year | 2022-12-31 | $859,029,911 |
| Asset value of US Government securities at beginning of year | 2022-12-31 | $1,449,620,929 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2022-12-31 | $-111,008,485 |
| Net investment gain/loss from pooled separate accounts | 2022-12-31 | $11,860,640 |
| Net investment gain or loss from common/collective trusts | 2022-12-31 | $-363,591,403 |
| Net gain/loss from 103.12 investment entities | 2022-12-31 | $-54,743,220 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2022-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2022-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2022-12-31 | Yes |
| Contributions received in cash from employer | 2022-12-31 | $2,600,000 |
| Income. Dividends from common stock | 2022-12-31 | $9,807,700 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2022-12-31 | $255,492,316 |
| Asset. Corporate debt instrument preferred debt at end of year | 2022-12-31 | $283,013,148 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2022-12-31 | $410,122,283 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-12-31 | $114,156,687 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-12-31 | $135,215,217 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2022-12-31 | $446,049,192 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2022-12-31 | $699,431,450 |
| Liabilities. Value of benefit claims payable at end of year | 2022-12-31 | $-1,307 |
| Liabilities. Value of benefit claims payable at beginning of year | 2022-12-31 | $0 |
| Did the plan have assets held for investment | 2022-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2022-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2022-12-31 | No |
| Aggregate proceeds on sale of assets | 2022-12-31 | $2,274,443,185 |
| Aggregate carrying amount (costs) on sale of assets | 2022-12-31 | $2,919,794,644 |
| Opinion of an independent qualified public accountant for this plan | 2022-12-31 | Unqualified |
| Accountancy firm name | 2022-12-31 | CROWE LLP |
| Accountancy firm EIN | 2022-12-31 | 350921680 |
| Unrealized appreciation/depreciation of real estate assets | 2022-01-01 | $-401,854,321 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-01-01 | $-20,946,859 |
| Total unrealized appreciation/depreciation of assets | 2022-01-01 | $-422,801,180 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-01-01 | $243,295,978 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-01-01 | $366,475,471 |
| Total income from all sources (including contributions) | 2022-01-01 | $-1,507,962,212 |
| Total loss/gain on sale of assets | 2022-01-01 | $-645,351,459 |
| Total of all expenses incurred | 2022-01-01 | $271,251,937 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2022-01-01 | $255,492,316 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2022-01-01 | $2,600,000 |
| Value of total assets at end of year | 2022-01-01 | $4,442,367,346 |
| Value of total assets at beginning of year | 2022-01-01 | $6,344,760,988 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-01-01 | $15,759,621 |
| Total interest from all sources | 2022-01-01 | $51,789,226 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-01-01 | $14,497,950 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2022-01-01 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2022-01-01 | $4,690,250 |
| Administrative expenses professional fees incurred | 2022-01-01 | $1,932,177 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2022-01-01 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2022-01-01 | $0 |
| Was this plan covered by a fidelity bond | 2022-01-01 | Yes |
| Value of fidelity bond cover | 2022-01-01 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2022-01-01 | No |
| Assets. Other investments not covered elsewhere at end of year | 2022-01-01 | $275,567,929 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-01-01 | $431,874,537 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-01-01 | $46,147,008 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-01-01 | $92,597,271 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-01-01 | $243,297,285 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-01-01 | $362,922,642 |
| Other income not declared elsewhere | 2022-01-01 | $8,785,719 |
| Administrative expenses (other) incurred | 2022-01-01 | $4,261,045 |
| Liabilities. Value of operating payables at end of year | 2022-01-01 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2022-01-01 | $3,552,829 |
| Total non interest bearing cash at end of year | 2022-01-01 | $5,974,115 |
| Total non interest bearing cash at beginning of year | 2022-01-01 | $4,454 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2022-01-01 | No |
| Value of net income/loss | 2022-01-01 | $-1,779,214,149 |
| Value of net assets at end of year (total assets less liabilities) | 2022-01-01 | $4,199,071,368 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-01-01 | $5,978,285,517 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2022-01-01 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2022-01-01 | No |
| Were any leases to which the plan was party in default or uncollectible | 2022-01-01 | No |
| Assets. partnership/joint venture interests at end of year | 2022-01-01 | $201,724,365 |
| Assets. partnership/joint venture interests at beginning of year | 2022-01-01 | $171,503,095 |
| Investment advisory and management fees | 2022-01-01 | $9,566,399 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2022-01-01 | $265,823,561 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2022-01-01 | $372,968,680 |
| Value of interest in pooled separate accounts at end of year | 2022-01-01 | $69,995,675 |
| Value of interest in pooled separate accounts at beginning of year | 2022-01-01 | $58,135,035 |
| Interest earned on other investments | 2022-01-01 | $2,512,205 |
| Income. Interest from US Government securities | 2022-01-01 | $30,082,203 |
| Income. Interest from corporate debt instruments | 2022-01-01 | $19,158,032 |
| Value of interest in common/collective trusts at end of year | 2022-01-01 | $1,547,918,835 |
| Value of interest in common/collective trusts at beginning of year | 2022-01-01 | $2,114,115,093 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2022-01-01 | $3,958,562 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-01-01 | $36,786 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2022-01-01 | $323,008,358 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2022-01-01 | $419,962,539 |
| Asset value of US Government securities at end of year | 2022-01-01 | $859,029,911 |
| Asset value of US Government securities at beginning of year | 2022-01-01 | $1,449,620,929 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2022-01-01 | $-111,008,485 |
| Net investment gain/loss from pooled separate accounts | 2022-01-01 | $11,860,640 |
| Net investment gain or loss from common/collective trusts | 2022-01-01 | $-363,591,403 |
| Net gain/loss from 103.12 investment entities | 2022-01-01 | $-54,743,220 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2022-01-01 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2022-01-01 | No |
| Has the plan failed to provide any benefit when due under the plan | 2022-01-01 | Yes |
| Contributions received in cash from employer | 2022-01-01 | $2,600,000 |
| Income. Dividends from common stock | 2022-01-01 | $9,807,700 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2022-01-01 | $255,492,316 |
| Asset. Corporate debt instrument preferred debt at end of year | 2022-01-01 | $283,013,148 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2022-01-01 | $410,122,283 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-01-01 | $114,156,687 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-01-01 | $135,215,217 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2022-01-01 | $446,049,192 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2022-01-01 | $699,431,450 |
| Liabilities. Value of benefit claims payable at end of year | 2022-01-01 | $-1,307 |
| Liabilities. Value of benefit claims payable at beginning of year | 2022-01-01 | $0 |
| Did the plan have assets held for investment | 2022-01-01 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2022-01-01 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2022-01-01 | No |
| Aggregate proceeds on sale of assets | 2022-01-01 | $2,274,443,185 |
| Aggregate carrying amount (costs) on sale of assets | 2022-01-01 | $2,919,794,644 |
| Opinion of an independent qualified public accountant for this plan | 2022-01-01 | 1 |
| Accountancy firm name | 2022-01-01 | CROWE LLP |
| Accountancy firm EIN | 2022-01-01 | 350921680 |
| 2021 : AMEREN RETIREMENT PLAN 2021 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2021-12-31 | $22,044,501 |
| Total unrealized appreciation/depreciation of assets | 2021-12-31 | $22,044,501 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $366,475,471 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $299,053,040 |
| Total income from all sources (including contributions) | 2021-12-31 | $520,845,426 |
| Total loss/gain on sale of assets | 2021-12-31 | $-77,780,158 |
| Total of all expenses incurred | 2021-12-31 | $269,648,418 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2021-12-31 | $252,550,665 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2021-12-31 | $58,500,000 |
| Value of total assets at end of year | 2021-12-31 | $6,344,760,988 |
| Value of total assets at beginning of year | 2021-12-31 | $6,026,141,549 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-12-31 | $17,097,753 |
| Total interest from all sources | 2021-12-31 | $52,059,007 |
| Total dividends received (eg from common stock, registered investment company shares) | 2021-12-31 | $36,658,575 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2021-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2021-12-31 | $27,075,432 |
| Administrative expenses professional fees incurred | 2021-12-31 | $374,524 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2021-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2021-12-31 | $16 |
| Was this plan covered by a fidelity bond | 2021-12-31 | Yes |
| Value of fidelity bond cover | 2021-12-31 | $10,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2021-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2021-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2021-12-31 | $431,874,537 |
| Assets. Other investments not covered elsewhere at beginning of year | 2021-12-31 | $338,852,622 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2021-12-31 | $92,597,271 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2021-12-31 | $34,802,493 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2021-12-31 | $362,922,642 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2021-12-31 | $296,067,124 |
| Other income not declared elsewhere | 2021-12-31 | $7,145,751 |
| Administrative expenses (other) incurred | 2021-12-31 | $4,530,618 |
| Liabilities. Value of operating payables at end of year | 2021-12-31 | $3,552,829 |
| Liabilities. Value of operating payables at beginning of year | 2021-12-31 | $2,985,916 |
| Total non interest bearing cash at end of year | 2021-12-31 | $4,454 |
| Total non interest bearing cash at beginning of year | 2021-12-31 | $1,681,415 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2021-12-31 | No |
| Value of net income/loss | 2021-12-31 | $251,197,008 |
| Value of net assets at end of year (total assets less liabilities) | 2021-12-31 | $5,978,285,517 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-12-31 | $5,727,088,509 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2021-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2021-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2021-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2021-12-31 | $171,503,095 |
| Assets. partnership/joint venture interests at beginning of year | 2021-12-31 | $158,325,512 |
| Investment advisory and management fees | 2021-12-31 | $12,192,611 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2021-12-31 | $372,968,680 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2021-12-31 | $374,459,638 |
| Value of interest in pooled separate accounts at end of year | 2021-12-31 | $58,135,035 |
| Value of interest in pooled separate accounts at beginning of year | 2021-12-31 | $51,241,898 |
| Interest earned on other investments | 2021-12-31 | $2,246,576 |
| Income. Interest from US Government securities | 2021-12-31 | $32,165,136 |
| Income. Interest from corporate debt instruments | 2021-12-31 | $17,650,772 |
| Value of interest in common/collective trusts at end of year | 2021-12-31 | $2,114,115,093 |
| Value of interest in common/collective trusts at beginning of year | 2021-12-31 | $2,204,318,643 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2021-12-31 | $-10,789,595 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2021-12-31 | $10,732,113 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2021-12-31 | $10,732,113 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2021-12-31 | $-3,477 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2021-12-31 | $419,962,539 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2021-12-31 | $390,440,809 |
| Asset value of US Government securities at end of year | 2021-12-31 | $1,449,620,929 |
| Asset value of US Government securities at beginning of year | 2021-12-31 | $1,328,388,513 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2021-12-31 | $-29,392,614 |
| Net investment gain/loss from pooled separate accounts | 2021-12-31 | $8,081,005 |
| Net investment gain or loss from common/collective trusts | 2021-12-31 | $411,508,017 |
| Net gain/loss from 103.12 investment entities | 2021-12-31 | $32,021,342 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2021-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2021-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2021-12-31 | No |
| Contributions received in cash from employer | 2021-12-31 | $58,500,000 |
| Income. Dividends from common stock | 2021-12-31 | $9,583,143 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2021-12-31 | $252,550,665 |
| Asset. Corporate debt instrument preferred debt at end of year | 2021-12-31 | $410,122,283 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2021-12-31 | $380,462,559 |
| Asset. Corporate debt instrument debt (other) at end of year | 2021-12-31 | $135,215,217 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2021-12-31 | $125,905,754 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2021-12-31 | $699,431,450 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2021-12-31 | $626,529,564 |
| Did the plan have assets held for investment | 2021-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2021-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2021-12-31 | No |
| Aggregate proceeds on sale of assets | 2021-12-31 | $2,330,650,458 |
| Aggregate carrying amount (costs) on sale of assets | 2021-12-31 | $2,408,430,616 |
| Opinion of an independent qualified public accountant for this plan | 2021-12-31 | Unqualified |
| Accountancy firm name | 2021-12-31 | CROWE LLP |
| Accountancy firm EIN | 2021-12-31 | 350921680 |
| 2020 : AMEREN RETIREMENT PLAN 2020 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2020-12-31 | $267,016,414 |
| Total unrealized appreciation/depreciation of assets | 2020-12-31 | $267,016,414 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $299,053,040 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $148,859,715 |
| Total income from all sources (including contributions) | 2020-12-31 | $1,198,309,047 |
| Total loss/gain on sale of assets | 2020-12-31 | $333,202,554 |
| Total of all expenses incurred | 2020-12-31 | $257,788,040 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2020-12-31 | $243,552,468 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2020-12-31 | $0 |
| Value of total assets at end of year | 2020-12-31 | $6,026,141,549 |
| Value of total assets at beginning of year | 2020-12-31 | $4,935,427,217 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $14,235,572 |
| Total interest from all sources | 2020-12-31 | $51,443,229 |
| Total dividends received (eg from common stock, registered investment company shares) | 2020-12-31 | $9,487,405 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2020-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2020-12-31 | $2,626,443 |
| Administrative expenses professional fees incurred | 2020-12-31 | $237,914 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2020-12-31 | $16 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2020-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2020-12-31 | Yes |
| Value of fidelity bond cover | 2020-12-31 | $10,000,000 |
| Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities | 2020-12-31 | $0 |
| Were there any nonexempt tranactions with any party-in-interest | 2020-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2020-12-31 | $338,852,622 |
| Assets. Other investments not covered elsewhere at beginning of year | 2020-12-31 | $186,512,695 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $34,802,493 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $58,634,034 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $296,067,124 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $146,227,535 |
| Other income not declared elsewhere | 2020-12-31 | $8,134,158 |
| Administrative expenses (other) incurred | 2020-12-31 | $5,522,168 |
| Liabilities. Value of operating payables at end of year | 2020-12-31 | $2,985,916 |
| Liabilities. Value of operating payables at beginning of year | 2020-12-31 | $2,632,180 |
| Total non interest bearing cash at end of year | 2020-12-31 | $1,681,415 |
| Total non interest bearing cash at beginning of year | 2020-12-31 | $25,962 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2020-12-31 | No |
| Value of net income/loss | 2020-12-31 | $940,521,007 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $5,727,088,509 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $4,786,567,502 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2020-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2020-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2020-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2020-12-31 | $158,325,512 |
| Assets. partnership/joint venture interests at beginning of year | 2020-12-31 | $160,721,391 |
| Investment advisory and management fees | 2020-12-31 | $8,475,490 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2020-12-31 | $374,459,638 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2020-12-31 | $295,841,993 |
| Value of interest in pooled separate accounts at end of year | 2020-12-31 | $51,241,898 |
| Value of interest in pooled separate accounts at beginning of year | 2020-12-31 | $52,730,711 |
| Interest earned on other investments | 2020-12-31 | $2,277,157 |
| Income. Interest from US Government securities | 2020-12-31 | $32,209,490 |
| Income. Interest from corporate debt instruments | 2020-12-31 | $16,948,701 |
| Value of interest in common/collective trusts at end of year | 2020-12-31 | $2,204,318,643 |
| Value of interest in common/collective trusts at beginning of year | 2020-12-31 | $1,791,842,054 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2020-12-31 | $10,732,113 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2020-12-31 | $4,130,853 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2020-12-31 | $4,130,853 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $7,881 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2020-12-31 | $390,440,809 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2020-12-31 | $271,761,901 |
| Asset value of US Government securities at end of year | 2020-12-31 | $1,328,388,513 |
| Asset value of US Government securities at beginning of year | 2020-12-31 | $1,015,061,030 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2020-12-31 | $76,167,061 |
| Net investment gain/loss from pooled separate accounts | 2020-12-31 | $337,783 |
| Net investment gain or loss from common/collective trusts | 2020-12-31 | $411,984,912 |
| Net gain/loss from 103.12 investment entities | 2020-12-31 | $40,535,531 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2020-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2020-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2020-12-31 | No |
| Employer contributions (assets) at end of year | 2020-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2020-12-31 | $49,000,000 |
| Income. Dividends from common stock | 2020-12-31 | $6,860,962 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2020-12-31 | $243,552,468 |
| Asset. Corporate debt instrument preferred debt at end of year | 2020-12-31 | $380,462,559 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2020-12-31 | $467,030,665 |
| Asset. Corporate debt instrument debt (other) at end of year | 2020-12-31 | $125,905,754 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2020-12-31 | $130,404,495 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2020-12-31 | $626,529,564 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2020-12-31 | $451,729,433 |
| Did the plan have assets held for investment | 2020-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2020-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2020-12-31 | No |
| Aggregate proceeds on sale of assets | 2020-12-31 | $3,283,936,830 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $2,950,734,276 |
| Opinion of an independent qualified public accountant for this plan | 2020-12-31 | Unqualified |
| Accountancy firm name | 2020-12-31 | CROWE LLP |
| Accountancy firm EIN | 2020-12-31 | 350921680 |
| 2019 : AMEREN RETIREMENT PLAN 2019 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $191,706,575 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $191,706,575 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $191,706,575 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $191,706,575 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $148,859,715 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $148,859,715 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $7,478,477 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $7,478,477 |
| Total income from all sources (including contributions) | 2019-12-31 | $969,310,564 |
| Total loss/gain on sale of assets | 2019-12-31 | $134,812,997 |
| Total loss/gain on sale of assets | 2019-12-31 | $134,812,997 |
| Total of all expenses incurred | 2019-12-31 | $246,153,293 |
| Total of all expenses incurred | 2019-12-31 | $246,153,293 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2019-12-31 | $226,355,754 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2019-12-31 | $49,000,000 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2019-12-31 | $49,000,000 |
| Value of total assets at end of year | 2019-12-31 | $4,935,427,217 |
| Value of total assets at end of year | 2019-12-31 | $4,935,427,217 |
| Value of total assets at beginning of year | 2019-12-31 | $4,070,888,708 |
| Value of total assets at beginning of year | 2019-12-31 | $4,070,888,708 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $19,797,539 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $19,797,539 |
| Total interest from all sources | 2019-12-31 | $60,695,783 |
| Total interest from all sources | 2019-12-31 | $60,695,783 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $11,403,233 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $11,403,233 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2019-12-31 | No |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2019-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2019-12-31 | $7,020,481 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2019-12-31 | $7,020,481 |
| Was this plan covered by a fidelity bond | 2019-12-31 | Yes |
| Value of fidelity bond cover | 2019-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2019-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2019-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2019-12-31 | $186,512,695 |
| Assets. Other investments not covered elsewhere at end of year | 2019-12-31 | $186,512,695 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $99,642,339 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $99,642,339 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $58,634,034 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $58,634,034 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $24,355,932 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $24,355,932 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $146,227,535 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $146,227,535 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $5,466,430 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $5,466,430 |
| Other income not declared elsewhere | 2019-12-31 | $13,442,968 |
| Other income not declared elsewhere | 2019-12-31 | $13,442,968 |
| Administrative expenses (other) incurred | 2019-12-31 | $19,797,539 |
| Administrative expenses (other) incurred | 2019-12-31 | $19,797,539 |
| Liabilities. Value of operating payables at end of year | 2019-12-31 | $2,632,180 |
| Liabilities. Value of operating payables at end of year | 2019-12-31 | $2,632,180 |
| Liabilities. Value of operating payables at beginning of year | 2019-12-31 | $2,012,047 |
| Liabilities. Value of operating payables at beginning of year | 2019-12-31 | $2,012,047 |
| Total non interest bearing cash at end of year | 2019-12-31 | $25,962 |
| Total non interest bearing cash at end of year | 2019-12-31 | $25,962 |
| Total non interest bearing cash at beginning of year | 2019-12-31 | $-19 |
| Total non interest bearing cash at beginning of year | 2019-12-31 | $-19 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2019-12-31 | No |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2019-12-31 | No |
| Value of net income/loss | 2019-12-31 | $723,157,271 |
| Value of net income/loss | 2019-12-31 | $723,157,271 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $4,786,567,502 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $4,786,567,502 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $4,063,410,231 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $4,063,410,231 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2019-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2019-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2019-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2019-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2019-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2019-12-31 | $160,721,391 |
| Assets. partnership/joint venture interests at end of year | 2019-12-31 | $160,721,391 |
| Assets. partnership/joint venture interests at beginning of year | 2019-12-31 | $154,798,034 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2019-12-31 | $295,841,993 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2019-12-31 | $295,841,993 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2019-12-31 | $223,676,813 |
| Value of interest in pooled separate accounts at end of year | 2019-12-31 | $52,730,711 |
| Value of interest in pooled separate accounts at end of year | 2019-12-31 | $52,730,711 |
| Value of interest in pooled separate accounts at beginning of year | 2019-12-31 | $49,955,710 |
| Interest earned on other investments | 2019-12-31 | $4,611,455 |
| Interest earned on other investments | 2019-12-31 | $4,611,455 |
| Income. Interest from US Government securities | 2019-12-31 | $25,578,875 |
| Income. Interest from US Government securities | 2019-12-31 | $25,578,875 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $30,505,863 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $30,505,863 |
| Value of interest in common/collective trusts at end of year | 2019-12-31 | $1,791,842,054 |
| Value of interest in common/collective trusts at end of year | 2019-12-31 | $1,791,842,054 |
| Value of interest in common/collective trusts at beginning of year | 2019-12-31 | $1,319,829,049 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $4,130,853 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $4,130,853 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $3,675,281 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $3,675,281 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $-410 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $-410 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2019-12-31 | $271,761,901 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2019-12-31 | $271,761,901 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2019-12-31 | $223,684,761 |
| Asset value of US Government securities at end of year | 2019-12-31 | $1,015,061,030 |
| Asset value of US Government securities at end of year | 2019-12-31 | $1,015,061,030 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $891,576,281 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $891,576,281 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2019-12-31 | $65,168,145 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2019-12-31 | $65,168,145 |
| Net investment gain/loss from pooled separate accounts | 2019-12-31 | $3,140,416 |
| Net investment gain/loss from pooled separate accounts | 2019-12-31 | $3,140,416 |
| Net investment gain or loss from common/collective trusts | 2019-12-31 | $390,196,344 |
| Net investment gain or loss from common/collective trusts | 2019-12-31 | $390,196,344 |
| Net gain/loss from 103.12 investment entities | 2019-12-31 | $49,744,103 |
| Net gain/loss from 103.12 investment entities | 2019-12-31 | $49,744,103 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2019-12-31 | Yes |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2019-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2019-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2019-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2019-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2019-12-31 | No |
| Contributions received in cash from employer | 2019-12-31 | $49,000,000 |
| Contributions received in cash from employer | 2019-12-31 | $49,000,000 |
| Employer contributions (assets) at end of year | 2019-12-31 | $49,000,000 |
| Employer contributions (assets) at end of year | 2019-12-31 | $49,000,000 |
| Employer contributions (assets) at beginning of year | 2019-12-31 | $21,200,000 |
| Employer contributions (assets) at beginning of year | 2019-12-31 | $21,200,000 |
| Income. Dividends from common stock | 2019-12-31 | $4,382,752 |
| Income. Dividends from common stock | 2019-12-31 | $4,382,752 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2019-12-31 | $226,355,754 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2019-12-31 | $226,355,754 |
| Asset. Corporate debt instrument preferred debt at end of year | 2019-12-31 | $467,030,665 |
| Asset. Corporate debt instrument preferred debt at end of year | 2019-12-31 | $467,030,665 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2019-12-31 | $554,830,140 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2019-12-31 | $554,830,140 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $130,404,495 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $130,404,495 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $146,229,164 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $146,229,164 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2019-12-31 | $451,729,433 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2019-12-31 | $451,729,433 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2019-12-31 | $357,435,223 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2019-12-31 | $357,435,223 |
| Did the plan have assets held for investment | 2019-12-31 | Yes |
| Did the plan have assets held for investment | 2019-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2019-12-31 | No |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2019-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2019-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2019-12-31 | No |
| Aggregate proceeds on sale of assets | 2019-12-31 | $2,953,939,731 |
| Aggregate proceeds on sale of assets | 2019-12-31 | $2,953,939,731 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $2,819,126,734 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $2,819,126,734 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2019-12-31 | No |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2019-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2019-12-31 | Unqualified |
| Opinion of an independent qualified public accountant for this plan | 2019-12-31 | Unqualified |
| Accountancy firm name | 2019-12-31 | CROWE LLP |
| Accountancy firm name | 2019-12-31 | CROWE LLP |
| Accountancy firm EIN | 2019-12-31 | 350921680 |
| Accountancy firm EIN | 2019-12-31 | 350921680 |
| 2018 : AMEREN RETIREMENT PLAN 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $-98,311,976 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $-98,311,976 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $7,478,477 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $9,463,501 |
| Total income from all sources (including contributions) | 2018-12-31 | $-138,243,700 |
| Total loss/gain on sale of assets | 2018-12-31 | $-46,142,264 |
| Total of all expenses incurred | 2018-12-31 | $243,670,675 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2018-12-31 | $231,759,915 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2018-12-31 | $79,200,000 |
| Value of total assets at end of year | 2018-12-31 | $4,070,888,708 |
| Value of total assets at beginning of year | 2018-12-31 | $4,454,788,107 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $11,910,760 |
| Total interest from all sources | 2018-12-31 | $60,832,239 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $7,888,861 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2018-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2018-12-31 | $3,578,031 |
| Was this plan covered by a fidelity bond | 2018-12-31 | Yes |
| Value of fidelity bond cover | 2018-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2018-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2018-12-31 | $99,642,339 |
| Assets. Other investments not covered elsewhere at beginning of year | 2018-12-31 | $98,476,285 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $24,355,932 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $34,598,426 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $5,466,430 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $7,222,155 |
| Other income not declared elsewhere | 2018-12-31 | $6,228,658 |
| Administrative expenses (other) incurred | 2018-12-31 | $11,910,760 |
| Liabilities. Value of operating payables at end of year | 2018-12-31 | $2,012,047 |
| Liabilities. Value of operating payables at beginning of year | 2018-12-31 | $2,241,346 |
| Total non interest bearing cash at end of year | 2018-12-31 | $-19 |
| Total non interest bearing cash at beginning of year | 2018-12-31 | $-18,715 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2018-12-31 | No |
| Value of net income/loss | 2018-12-31 | $-381,914,375 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $4,063,410,231 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $4,445,324,606 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2018-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2018-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2018-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2018-12-31 | $154,798,034 |
| Assets. partnership/joint venture interests at beginning of year | 2018-12-31 | $153,567,702 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2018-12-31 | $223,676,813 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2018-12-31 | $179,283,456 |
| Value of interest in pooled separate accounts at end of year | 2018-12-31 | $49,955,710 |
| Value of interest in pooled separate accounts at beginning of year | 2018-12-31 | $45,690,480 |
| Interest earned on other investments | 2018-12-31 | $4,438,946 |
| Income. Interest from US Government securities | 2018-12-31 | $25,787,277 |
| Income. Interest from corporate debt instruments | 2018-12-31 | $30,606,094 |
| Value of interest in common/collective trusts at end of year | 2018-12-31 | $1,319,829,049 |
| Value of interest in common/collective trusts at beginning of year | 2018-12-31 | $1,739,342,232 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2018-12-31 | $3,675,281 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2018-12-31 | $-213,968 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2018-12-31 | $-213,968 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $-78 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2018-12-31 | $223,684,761 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2018-12-31 | $274,070,450 |
| Asset value of US Government securities at end of year | 2018-12-31 | $891,576,281 |
| Asset value of US Government securities at beginning of year | 2018-12-31 | $823,493,754 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2018-12-31 | $-39,308,287 |
| Net investment gain/loss from pooled separate accounts | 2018-12-31 | $4,664,034 |
| Net investment gain or loss from common/collective trusts | 2018-12-31 | $-55,823,196 |
| Net gain/loss from 103.12 investment entities | 2018-12-31 | $-57,471,769 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2018-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2018-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2018-12-31 | No |
| Contributions received in cash from employer | 2018-12-31 | $79,200,000 |
| Employer contributions (assets) at end of year | 2018-12-31 | $21,200,000 |
| Income. Dividends from common stock | 2018-12-31 | $4,310,830 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2018-12-31 | $231,759,915 |
| Asset. Corporate debt instrument preferred debt at end of year | 2018-12-31 | $554,830,140 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2018-12-31 | $572,644,145 |
| Asset. Corporate debt instrument debt (other) at end of year | 2018-12-31 | $146,229,164 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2018-12-31 | $154,640,885 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2018-12-31 | $357,435,223 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2018-12-31 | $379,212,975 |
| Did the plan have assets held for investment | 2018-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2018-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2018-12-31 | No |
| Aggregate proceeds on sale of assets | 2018-12-31 | $2,216,693,258 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $2,262,835,522 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2018-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2018-12-31 | Unqualified |
| Accountancy firm name | 2018-12-31 | CROWE LLP |
| Accountancy firm EIN | 2018-12-31 | 350921680 |
| 2017 : AMEREN RETIREMENT PLAN 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-12-31 | $117,271,884 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $117,271,884 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $9,463,501 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $19,913,868 |
| Total income from all sources (including contributions) | 2017-12-31 | $671,346,368 |
| Total loss/gain on sale of assets | 2017-12-31 | $38,496,322 |
| Total of all expenses incurred | 2017-12-31 | $230,092,369 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2017-12-31 | $217,205,938 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2017-12-31 | $0 |
| Value of total assets at end of year | 2017-12-31 | $4,454,788,107 |
| Value of total assets at beginning of year | 2017-12-31 | $4,023,984,475 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $12,886,431 |
| Total interest from all sources | 2017-12-31 | $56,331,306 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $6,682,006 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2017-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2017-12-31 | $1,961,378 |
| Was this plan covered by a fidelity bond | 2017-12-31 | Yes |
| Value of fidelity bond cover | 2017-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2017-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2017-12-31 | $98,476,285 |
| Assets. Other investments not covered elsewhere at beginning of year | 2017-12-31 | $98,361,017 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $34,598,426 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $38,865,052 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $7,222,155 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $17,387,888 |
| Other income not declared elsewhere | 2017-12-31 | $7,250,168 |
| Administrative expenses (other) incurred | 2017-12-31 | $12,886,431 |
| Liabilities. Value of operating payables at end of year | 2017-12-31 | $2,241,346 |
| Liabilities. Value of operating payables at beginning of year | 2017-12-31 | $2,525,980 |
| Total non interest bearing cash at end of year | 2017-12-31 | $-18,715 |
| Total non interest bearing cash at beginning of year | 2017-12-31 | $430,165 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2017-12-31 | No |
| Value of net income/loss | 2017-12-31 | $441,253,999 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $4,445,324,606 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $4,004,070,607 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2017-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2017-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2017-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2017-12-31 | $153,567,702 |
| Assets. partnership/joint venture interests at beginning of year | 2017-12-31 | $165,181,829 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2017-12-31 | $179,283,456 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2017-12-31 | $132,730,588 |
| Value of interest in pooled separate accounts at end of year | 2017-12-31 | $45,690,480 |
| Value of interest in pooled separate accounts at beginning of year | 2017-12-31 | $42,683,842 |
| Interest earned on other investments | 2017-12-31 | $4,389,190 |
| Income. Interest from US Government securities | 2017-12-31 | $23,091,306 |
| Income. Interest from corporate debt instruments | 2017-12-31 | $28,848,207 |
| Value of interest in common/collective trusts at end of year | 2017-12-31 | $1,739,342,232 |
| Value of interest in common/collective trusts at beginning of year | 2017-12-31 | $1,574,197,862 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-12-31 | $-213,968 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-12-31 | $285,486 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-12-31 | $285,486 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $2,603 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2017-12-31 | $274,070,450 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2017-12-31 | $213,594,681 |
| Asset value of US Government securities at end of year | 2017-12-31 | $823,493,754 |
| Asset value of US Government securities at beginning of year | 2017-12-31 | $706,005,564 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2017-12-31 | $44,591,489 |
| Net investment gain/loss from pooled separate accounts | 2017-12-31 | $3,523,980 |
| Net investment gain or loss from common/collective trusts | 2017-12-31 | $334,943,684 |
| Net gain/loss from 103.12 investment entities | 2017-12-31 | $62,255,529 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2017-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2017-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2017-12-31 | No |
| Employer contributions (assets) at beginning of year | 2017-12-31 | $61,400,000 |
| Income. Dividends from common stock | 2017-12-31 | $4,720,628 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2017-12-31 | $217,205,938 |
| Asset. Corporate debt instrument preferred debt at end of year | 2017-12-31 | $572,644,145 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2017-12-31 | $533,444,715 |
| Asset. Corporate debt instrument debt (other) at end of year | 2017-12-31 | $154,640,885 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2017-12-31 | $95,394,030 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2017-12-31 | $379,212,975 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2017-12-31 | $361,409,644 |
| Did the plan have assets held for investment | 2017-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2017-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2017-12-31 | No |
| Aggregate proceeds on sale of assets | 2017-12-31 | $2,506,926,343 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $2,468,430,021 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2017-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2017-12-31 | Unqualified |
| Accountancy firm name | 2017-12-31 | CROWE LLP |
| Accountancy firm EIN | 2017-12-31 | 350921680 |
| 2016 : AMEREN RETIREMENT PLAN 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $36,953,335 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $36,953,335 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $19,913,868 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $20,590,930 |
| Total income from all sources (including contributions) | 2016-12-31 | $395,382,351 |
| Total loss/gain on sale of assets | 2016-12-31 | $59,506,508 |
| Total of all expenses incurred | 2016-12-31 | $220,406,617 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2016-12-31 | $208,805,898 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2016-12-31 | $61,400,000 |
| Value of total assets at end of year | 2016-12-31 | $4,023,984,475 |
| Value of total assets at beginning of year | 2016-12-31 | $3,849,685,803 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $11,600,719 |
| Total interest from all sources | 2016-12-31 | $56,139,860 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $7,181,076 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2016-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2016-12-31 | $2,015,253 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2016-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2016-12-31 | $548,438 |
| Was this plan covered by a fidelity bond | 2016-12-31 | Yes |
| Value of fidelity bond cover | 2016-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2016-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2016-12-31 | $98,361,017 |
| Assets. Other investments not covered elsewhere at beginning of year | 2016-12-31 | $109,143,508 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $38,865,052 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $46,764,718 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $17,387,888 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $18,843,157 |
| Other income not declared elsewhere | 2016-12-31 | $6,413,097 |
| Administrative expenses (other) incurred | 2016-12-31 | $11,600,719 |
| Liabilities. Value of operating payables at end of year | 2016-12-31 | $2,525,980 |
| Liabilities. Value of operating payables at beginning of year | 2016-12-31 | $1,747,773 |
| Total non interest bearing cash at end of year | 2016-12-31 | $430,165 |
| Total non interest bearing cash at beginning of year | 2016-12-31 | $-29,179 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2016-12-31 | No |
| Value of net income/loss | 2016-12-31 | $174,975,734 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $4,004,070,607 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $3,829,094,873 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2016-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2016-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2016-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2016-12-31 | $165,181,829 |
| Assets. partnership/joint venture interests at beginning of year | 2016-12-31 | $154,998,849 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2016-12-31 | $132,730,588 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2016-12-31 | $248,403,075 |
| Value of interest in pooled separate accounts at end of year | 2016-12-31 | $42,683,842 |
| Value of interest in pooled separate accounts at beginning of year | 2016-12-31 | $20,356,256 |
| Interest earned on other investments | 2016-12-31 | $5,090,070 |
| Income. Interest from US Government securities | 2016-12-31 | $22,634,951 |
| Income. Interest from corporate debt instruments | 2016-12-31 | $28,417,131 |
| Value of interest in common/collective trusts at end of year | 2016-12-31 | $1,574,197,862 |
| Value of interest in common/collective trusts at beginning of year | 2016-12-31 | $1,368,362,101 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $285,486 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $11,252 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $11,252 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $-2,292 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2016-12-31 | $213,594,681 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2016-12-31 | $206,144,445 |
| Asset value of US Government securities at end of year | 2016-12-31 | $706,005,564 |
| Asset value of US Government securities at beginning of year | 2016-12-31 | $756,942,183 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2016-12-31 | $-3,794,307 |
| Net investment gain/loss from pooled separate accounts | 2016-12-31 | $2,539,992 |
| Net investment gain or loss from common/collective trusts | 2016-12-31 | $162,937,034 |
| Net gain/loss from 103.12 investment entities | 2016-12-31 | $6,105,756 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2016-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2016-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2016-12-31 | No |
| Contributions received in cash from employer | 2016-12-31 | $61,400,000 |
| Employer contributions (assets) at end of year | 2016-12-31 | $61,400,000 |
| Employer contributions (assets) at beginning of year | 2016-12-31 | $54,500,000 |
| Income. Dividends from common stock | 2016-12-31 | $5,165,823 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2016-12-31 | $208,805,898 |
| Asset. Corporate debt instrument preferred debt at end of year | 2016-12-31 | $533,444,715 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2016-12-31 | $514,752,158 |
| Asset. Corporate debt instrument debt (other) at end of year | 2016-12-31 | $95,394,030 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2016-12-31 | $101,380,221 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2016-12-31 | $361,409,644 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2016-12-31 | $267,407,778 |
| Did the plan have assets held for investment | 2016-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2016-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2016-12-31 | No |
| Aggregate proceeds on sale of assets | 2016-12-31 | $2,654,219,738 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $2,594,713,230 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2016-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2016-12-31 | Unqualified |
| Accountancy firm name | 2016-12-31 | CROWE HORWATH |
| Accountancy firm EIN | 2016-12-31 | 350921680 |
| 2015 : AMEREN RETIREMENT PLAN 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $-45,752,471 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-45,752,471 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $20,590,930 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $1,910,392 |
| Total income from all sources (including contributions) | 2015-12-31 | $143,546,946 |
| Total loss/gain on sale of assets | 2015-12-31 | $-36,242,750 |
| Total of all expenses incurred | 2015-12-31 | $231,859,653 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2015-12-31 | $220,801,050 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2015-12-31 | $161,500,000 |
| Value of total assets at end of year | 2015-12-31 | $3,849,685,803 |
| Value of total assets at beginning of year | 2015-12-31 | $3,919,317,972 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $11,058,603 |
| Total interest from all sources | 2015-12-31 | $57,707,847 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $10,872,233 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2015-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2015-12-31 | $6,779,624 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2015-12-31 | $548,438 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2015-12-31 | $2,204,307 |
| Was this plan covered by a fidelity bond | 2015-12-31 | Yes |
| Value of fidelity bond cover | 2015-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2015-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2015-12-31 | $109,143,508 |
| Assets. Other investments not covered elsewhere at beginning of year | 2015-12-31 | $206,486,483 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $46,764,718 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $21,646,184 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $18,843,157 |
| Other income not declared elsewhere | 2015-12-31 | $6,071,818 |
| Administrative expenses (other) incurred | 2015-12-31 | $11,058,603 |
| Liabilities. Value of operating payables at end of year | 2015-12-31 | $1,747,773 |
| Liabilities. Value of operating payables at beginning of year | 2015-12-31 | $1,910,392 |
| Total non interest bearing cash at end of year | 2015-12-31 | $-29,179 |
| Total non interest bearing cash at beginning of year | 2015-12-31 | $-93,715 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2015-12-31 | No |
| Value of net income/loss | 2015-12-31 | $-88,312,707 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $3,829,094,873 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $3,917,407,580 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2015-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2015-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2015-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2015-12-31 | $154,998,849 |
| Assets. partnership/joint venture interests at beginning of year | 2015-12-31 | $140,557,302 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2015-12-31 | $248,403,075 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2015-12-31 | $262,518,527 |
| Value of interest in pooled separate accounts at end of year | 2015-12-31 | $20,356,256 |
| Value of interest in pooled separate accounts at beginning of year | 2015-12-31 | $17,677,702 |
| Interest earned on other investments | 2015-12-31 | $7,341,821 |
| Income. Interest from US Government securities | 2015-12-31 | $16,761,720 |
| Income. Interest from corporate debt instruments | 2015-12-31 | $33,605,018 |
| Value of interest in common/collective trusts at end of year | 2015-12-31 | $1,368,362,101 |
| Value of interest in common/collective trusts at beginning of year | 2015-12-31 | $1,406,311,456 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $11,252 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $252,827 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $252,827 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2015-12-31 | $-712 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2015-12-31 | $206,144,445 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2015-12-31 | $207,987,403 |
| Asset value of US Government securities at end of year | 2015-12-31 | $756,942,183 |
| Asset value of US Government securities at beginning of year | 2015-12-31 | $372,208,687 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2015-12-31 | $-20,894,954 |
| Net investment gain/loss from pooled separate accounts | 2015-12-31 | $2,866,034 |
| Net investment gain or loss from common/collective trusts | 2015-12-31 | $17,134,333 |
| Net gain/loss from 103.12 investment entities | 2015-12-31 | $-9,715,144 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2015-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2015-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2015-12-31 | No |
| Contributions received in cash from employer | 2015-12-31 | $161,500,000 |
| Employer contributions (assets) at end of year | 2015-12-31 | $54,500,000 |
| Income. Dividends from common stock | 2015-12-31 | $4,092,609 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2015-12-31 | $220,801,050 |
| Asset. Corporate debt instrument preferred debt at end of year | 2015-12-31 | $514,752,158 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2015-12-31 | $726,266,139 |
| Asset. Corporate debt instrument debt (other) at end of year | 2015-12-31 | $101,380,221 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2015-12-31 | $285,753,597 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2015-12-31 | $267,407,778 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2015-12-31 | $269,541,073 |
| Did the plan have assets held for investment | 2015-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2015-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2015-12-31 | No |
| Aggregate proceeds on sale of assets | 2015-12-31 | $4,678,042,447 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $4,714,285,197 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2015-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2015-12-31 | Unqualified |
| Accountancy firm name | 2015-12-31 | CROWE HORWATH |
| Accountancy firm EIN | 2015-12-31 | 350921680 |
| 2014 : AMEREN RETIREMENT PLAN 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $218,493,469 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $218,493,469 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $1,910,392 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $1,831,957 |
| Total income from all sources (including contributions) | 2014-12-31 | $472,841,231 |
| Total loss/gain on sale of assets | 2014-12-31 | $38,897,264 |
| Total of all expenses incurred | 2014-12-31 | $223,262,897 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2014-12-31 | $212,785,670 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2014-12-31 | $0 |
| Value of total assets at end of year | 2014-12-31 | $3,919,317,972 |
| Value of total assets at beginning of year | 2014-12-31 | $3,669,661,203 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $10,477,227 |
| Total interest from all sources | 2014-12-31 | $56,875,687 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $12,192,080 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2014-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2014-12-31 | $8,033,985 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2014-12-31 | $2,204,307 |
| Was this plan covered by a fidelity bond | 2014-12-31 | Yes |
| Value of fidelity bond cover | 2014-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2014-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2014-12-31 | $206,486,483 |
| Assets. Other investments not covered elsewhere at beginning of year | 2014-12-31 | $175,668,260 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $21,646,184 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $34,240,894 |
| Other income not declared elsewhere | 2014-12-31 | $5,478,099 |
| Administrative expenses (other) incurred | 2014-12-31 | $10,477,227 |
| Liabilities. Value of operating payables at end of year | 2014-12-31 | $1,910,392 |
| Liabilities. Value of operating payables at beginning of year | 2014-12-31 | $1,831,957 |
| Total non interest bearing cash at end of year | 2014-12-31 | $-93,715 |
| Total non interest bearing cash at beginning of year | 2014-12-31 | $383,337 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2014-12-31 | No |
| Value of net income/loss | 2014-12-31 | $249,578,334 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $3,917,407,580 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $3,667,829,246 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2014-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2014-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2014-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2014-12-31 | $140,557,302 |
| Assets. partnership/joint venture interests at beginning of year | 2014-12-31 | $129,250,381 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2014-12-31 | $262,518,527 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2014-12-31 | $275,336,222 |
| Value of interest in pooled separate accounts at end of year | 2014-12-31 | $17,677,702 |
| Value of interest in pooled separate accounts at beginning of year | 2014-12-31 | $15,415,532 |
| Interest earned on other investments | 2014-12-31 | $9,905,046 |
| Income. Interest from US Government securities | 2014-12-31 | $782,318 |
| Income. Interest from corporate debt instruments | 2014-12-31 | $46,188,497 |
| Value of interest in common/collective trusts at end of year | 2014-12-31 | $1,406,311,456 |
| Value of interest in common/collective trusts at beginning of year | 2014-12-31 | $1,234,425,842 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $252,827 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $7,302 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $7,302 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $-174 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2014-12-31 | $207,987,403 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2014-12-31 | $216,318,429 |
| Asset value of US Government securities at end of year | 2014-12-31 | $372,208,687 |
| Asset value of US Government securities at beginning of year | 2014-12-31 | $260,629,977 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2014-12-31 | $-20,851,680 |
| Net investment gain/loss from pooled separate accounts | 2014-12-31 | $2,430,536 |
| Net investment gain or loss from common/collective trusts | 2014-12-31 | $165,278,244 |
| Net gain/loss from 103.12 investment entities | 2014-12-31 | $-5,952,468 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2014-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2014-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2014-12-31 | No |
| Assets. Invements in employer securities at beginning of year | 2014-12-31 | $86,278 |
| Employer contributions (assets) at beginning of year | 2014-12-31 | $96,000,000 |
| Income. Dividends from common stock | 2014-12-31 | $4,158,095 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2014-12-31 | $212,785,670 |
| Asset. Corporate debt instrument preferred debt at end of year | 2014-12-31 | $726,266,139 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2014-12-31 | $604,363,945 |
| Asset. Corporate debt instrument debt (other) at end of year | 2014-12-31 | $285,753,597 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2014-12-31 | $247,848,343 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2014-12-31 | $269,541,073 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2014-12-31 | $379,686,461 |
| Did the plan have assets held for investment | 2014-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2014-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2014-12-31 | No |
| Aggregate proceeds on sale of assets | 2014-12-31 | $1,513,588,147 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $1,474,690,883 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2014-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2014-12-31 | Unqualified |
| Accountancy firm name | 2014-12-31 | CROWE HORWATH |
| Accountancy firm EIN | 2014-12-31 | 350921680 |
| 2013 : AMEREN RETIREMENT PLAN 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $-52,901,159 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $-52,901,159 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $1,831,957 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $7,141,870 |
| Total income from all sources (including contributions) | 2013-12-31 | $507,705,228 |
| Total loss/gain on sale of assets | 2013-12-31 | $-1,055,500 |
| Total of all expenses incurred | 2013-12-31 | $207,774,526 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2013-12-31 | $197,171,871 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2013-12-31 | $109,000,000 |
| Value of total assets at end of year | 2013-12-31 | $3,669,661,203 |
| Value of total assets at beginning of year | 2013-12-31 | $3,375,040,414 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $10,602,655 |
| Total interest from all sources | 2013-12-31 | $54,222,327 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $11,727,275 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2013-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2013-12-31 | $5,826,141 |
| Was this plan covered by a fidelity bond | 2013-12-31 | Yes |
| Value of fidelity bond cover | 2013-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2013-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2013-12-31 | $175,668,260 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $192,623,895 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $34,240,894 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $33,384,535 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $5,599,822 |
| Other income not declared elsewhere | 2013-12-31 | $2,331,093 |
| Administrative expenses (other) incurred | 2013-12-31 | $10,602,655 |
| Liabilities. Value of operating payables at end of year | 2013-12-31 | $1,831,957 |
| Liabilities. Value of operating payables at beginning of year | 2013-12-31 | $1,542,048 |
| Total non interest bearing cash at end of year | 2013-12-31 | $383,337 |
| Total non interest bearing cash at beginning of year | 2013-12-31 | $3,366 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2013-12-31 | No |
| Value of net income/loss | 2013-12-31 | $299,930,702 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $3,667,829,246 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $3,367,898,544 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2013-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2013-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2013-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2013-12-31 | $129,250,381 |
| Assets. partnership/joint venture interests at beginning of year | 2013-12-31 | $119,521,772 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2013-12-31 | $275,336,222 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2013-12-31 | $248,235,308 |
| Value of interest in pooled separate accounts at end of year | 2013-12-31 | $15,415,532 |
| Value of interest in pooled separate accounts at beginning of year | 2013-12-31 | $13,830,941 |
| Interest earned on other investments | 2013-12-31 | $12,486,691 |
| Income. Interest from US Government securities | 2013-12-31 | $415,585 |
| Income. Interest from corporate debt instruments | 2013-12-31 | $41,320,463 |
| Value of interest in common/collective trusts at end of year | 2013-12-31 | $1,234,425,842 |
| Value of interest in common/collective trusts at beginning of year | 2013-12-31 | $1,085,555,173 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $7,302 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $806,079 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $806,079 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $-412 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2013-12-31 | $216,318,429 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2013-12-31 | $147,752,801 |
| Asset value of US Government securities at end of year | 2013-12-31 | $260,629,977 |
| Asset value of US Government securities at beginning of year | 2013-12-31 | $250,890,830 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2013-12-31 | $31,274,772 |
| Net investment gain/loss from pooled separate accounts | 2013-12-31 | $1,747,936 |
| Net investment gain or loss from common/collective trusts | 2013-12-31 | $310,228,820 |
| Net gain/loss from 103.12 investment entities | 2013-12-31 | $41,129,664 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2013-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2013-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2013-12-31 | No |
| Assets. Invements in employer securities at end of year | 2013-12-31 | $86,278 |
| Assets. Invements in employer securities at beginning of year | 2013-12-31 | $73,298 |
| Contributions received in cash from employer | 2013-12-31 | $109,000,000 |
| Employer contributions (assets) at end of year | 2013-12-31 | $96,000,000 |
| Employer contributions (assets) at beginning of year | 2013-12-31 | $140,800,000 |
| Income. Dividends from common stock | 2013-12-31 | $5,901,134 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2013-12-31 | $197,171,871 |
| Asset. Corporate debt instrument preferred debt at end of year | 2013-12-31 | $604,363,945 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2013-12-31 | $591,642,219 |
| Asset. Corporate debt instrument debt (other) at end of year | 2013-12-31 | $247,848,343 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2013-12-31 | $231,668,060 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2013-12-31 | $379,686,461 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2013-12-31 | $318,252,137 |
| Did the plan have assets held for investment | 2013-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2013-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2013-12-31 | No |
| Aggregate proceeds on sale of assets | 2013-12-31 | $973,591,701 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $974,647,201 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2013-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2013-12-31 | Unqualified |
| Accountancy firm name | 2013-12-31 | CROWE HORWATH |
| Accountancy firm EIN | 2013-12-31 | 350921680 |
| 2012 : AMEREN RETIREMENT PLAN 2012 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2012-12-31 | $94,211,766 |
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $94,211,766 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $7,141,870 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $4,684,639 |
| Total income from all sources (including contributions) | 2012-12-31 | $675,254,519 |
| Total loss/gain on sale of assets | 2012-12-31 | $36,737,663 |
| Total of all expenses incurred | 2012-12-31 | $211,104,981 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2012-12-31 | $199,427,242 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2012-12-31 | $266,303,023 |
| Value of total assets at end of year | 2012-12-31 | $3,375,040,414 |
| Value of total assets at beginning of year | 2012-12-31 | $2,908,433,645 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $11,677,739 |
| Total interest from all sources | 2012-12-31 | $54,060,874 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $11,875,732 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2012-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2012-12-31 | $5,823,822 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2012-12-31 | $10 |
| Was this plan covered by a fidelity bond | 2012-12-31 | Yes |
| Value of fidelity bond cover | 2012-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2012-12-31 | No |
| Contributions received from participants | 2012-12-31 | $3,023 |
| Assets. Other investments not covered elsewhere at end of year | 2012-12-31 | $192,623,895 |
| Assets. Other investments not covered elsewhere at beginning of year | 2012-12-31 | $197,083,562 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2012-12-31 | $33,384,535 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2012-12-31 | $22,233,582 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2012-12-31 | $5,599,822 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2012-12-31 | $3,264,862 |
| Other income not declared elsewhere | 2012-12-31 | $1,952,494 |
| Administrative expenses (other) incurred | 2012-12-31 | $11,677,739 |
| Liabilities. Value of operating payables at end of year | 2012-12-31 | $1,542,048 |
| Liabilities. Value of operating payables at beginning of year | 2012-12-31 | $1,419,777 |
| Total non interest bearing cash at end of year | 2012-12-31 | $3,366 |
| Total non interest bearing cash at beginning of year | 2012-12-31 | $-114,264 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2012-12-31 | No |
| Value of net income/loss | 2012-12-31 | $464,149,538 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $3,367,898,544 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $2,903,749,006 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2012-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2012-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2012-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2012-12-31 | $119,521,772 |
| Assets. partnership/joint venture interests at beginning of year | 2012-12-31 | $113,611,180 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2012-12-31 | $248,235,308 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2012-12-31 | $193,155,663 |
| Value of interest in pooled separate accounts at end of year | 2012-12-31 | $13,830,941 |
| Value of interest in pooled separate accounts at beginning of year | 2012-12-31 | $12,471,533 |
| Interest earned on other investments | 2012-12-31 | $12,816,034 |
| Income. Interest from US Government securities | 2012-12-31 | $982,551 |
| Income. Interest from corporate debt instruments | 2012-12-31 | $40,262,518 |
| Value of interest in common/collective trusts at end of year | 2012-12-31 | $1,085,555,173 |
| Value of interest in common/collective trusts at beginning of year | 2012-12-31 | $960,712,206 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $806,079 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $4,260,334 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $4,260,334 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $-229 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2012-12-31 | $147,752,801 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2012-12-31 | $121,901,770 |
| Asset value of US Government securities at end of year | 2012-12-31 | $250,890,830 |
| Asset value of US Government securities at beginning of year | 2012-12-31 | $230,590,368 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2012-12-31 | $32,255,823 |
| Net investment gain/loss from pooled separate accounts | 2012-12-31 | $1,842,845 |
| Net investment gain or loss from common/collective trusts | 2012-12-31 | $147,778,123 |
| Net gain/loss from 103.12 investment entities | 2012-12-31 | $28,236,176 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2012-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2012-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2012-12-31 | No |
| Assets. Invements in employer securities at end of year | 2012-12-31 | $73,298 |
| Assets. Invements in employer securities at beginning of year | 2012-12-31 | $73,416 |
| Contributions received in cash from employer | 2012-12-31 | $266,300,000 |
| Employer contributions (assets) at end of year | 2012-12-31 | $140,800,000 |
| Income. Dividends from common stock | 2012-12-31 | $6,051,910 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2012-12-31 | $199,427,242 |
| Asset. Corporate debt instrument preferred debt at end of year | 2012-12-31 | $591,642,219 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2012-12-31 | $573,614,901 |
| Asset. Corporate debt instrument debt (other) at end of year | 2012-12-31 | $231,668,060 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2012-12-31 | $205,144,190 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2012-12-31 | $318,252,137 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2012-12-31 | $273,695,194 |
| Did the plan have assets held for investment | 2012-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2012-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2012-12-31 | No |
| Aggregate proceeds on sale of assets | 2012-12-31 | $1,048,314,796 |
| Aggregate carrying amount (costs) on sale of assets | 2012-12-31 | $1,011,577,133 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2012-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2012-12-31 | Unqualified |
| Accountancy firm name | 2012-12-31 | PRICEWATERHOUSECOOPERS |
| Accountancy firm EIN | 2012-12-31 | 134008324 |
| 2011 : AMEREN RETIREMENT PLAN 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2011-12-31 | $154,164,338 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $154,164,338 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $4,684,639 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $23,677,576 |
| Total income from all sources (including contributions) | 2011-12-31 | $284,255,360 |
| Total loss/gain on sale of assets | 2011-12-31 | $62,300,597 |
| Total of all expenses incurred | 2011-12-31 | $177,208,814 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2011-12-31 | $167,877,519 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2011-12-31 | $44,129,921 |
| Value of total assets at end of year | 2011-12-31 | $2,908,433,645 |
| Value of total assets at beginning of year | 2011-12-31 | $2,820,380,036 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $9,331,295 |
| Total interest from all sources | 2011-12-31 | $55,728,507 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $8,651,293 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2011-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2011-12-31 | $4,046,832 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2011-12-31 | $10 |
| Was this plan covered by a fidelity bond | 2011-12-31 | Yes |
| Value of fidelity bond cover | 2011-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2011-12-31 | No |
| Contributions received from participants | 2011-12-31 | $129,921 |
| Assets. Other investments not covered elsewhere at end of year | 2011-12-31 | $197,083,562 |
| Assets. Other investments not covered elsewhere at beginning of year | 2011-12-31 | $149,092,469 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2011-12-31 | $22,233,582 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2011-12-31 | $47,758,772 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2011-12-31 | $3,264,862 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2011-12-31 | $21,828,218 |
| Other income not declared elsewhere | 2011-12-31 | $1,699,443 |
| Administrative expenses (other) incurred | 2011-12-31 | $9,331,295 |
| Liabilities. Value of operating payables at end of year | 2011-12-31 | $1,419,777 |
| Liabilities. Value of operating payables at beginning of year | 2011-12-31 | $1,849,358 |
| Total non interest bearing cash at end of year | 2011-12-31 | $-114,264 |
| Total non interest bearing cash at beginning of year | 2011-12-31 | $-82,885 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2011-12-31 | No |
| Value of net income/loss | 2011-12-31 | $107,046,546 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $2,903,749,006 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $2,796,702,460 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2011-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2011-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2011-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2011-12-31 | $113,611,180 |
| Assets. partnership/joint venture interests at beginning of year | 2011-12-31 | $108,867,558 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2011-12-31 | $193,155,663 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2011-12-31 | $129,326,446 |
| Value of interest in pooled separate accounts at end of year | 2011-12-31 | $12,471,533 |
| Value of interest in pooled separate accounts at beginning of year | 2011-12-31 | $11,020,000 |
| Interest earned on other investments | 2011-12-31 | $12,663,057 |
| Income. Interest from US Government securities | 2011-12-31 | $1,142,943 |
| Income. Interest from corporate debt instruments | 2011-12-31 | $42,016,976 |
| Value of interest in common/collective trusts at end of year | 2011-12-31 | $960,712,206 |
| Value of interest in common/collective trusts at beginning of year | 2011-12-31 | $898,688,762 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2011-12-31 | $4,260,334 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $2,759,014 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $2,759,014 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $-94,469 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2011-12-31 | $121,901,770 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2011-12-31 | $204,349,711 |
| Asset value of US Government securities at end of year | 2011-12-31 | $230,590,368 |
| Asset value of US Government securities at beginning of year | 2011-12-31 | $151,806,246 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2011-12-31 | $-19,311,845 |
| Net investment gain/loss from pooled separate accounts | 2011-12-31 | $2,024,386 |
| Net investment gain or loss from common/collective trusts | 2011-12-31 | $2,997,995 |
| Net gain/loss from 103.12 investment entities | 2011-12-31 | $-28,129,275 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2011-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2011-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2011-12-31 | No |
| Assets. Invements in employer securities at end of year | 2011-12-31 | $73,416 |
| Contributions received in cash from employer | 2011-12-31 | $44,000,000 |
| Employer contributions (assets) at beginning of year | 2011-12-31 | $49,000,000 |
| Income. Dividends from preferred stock | 2011-12-31 | $27,048 |
| Income. Dividends from common stock | 2011-12-31 | $4,577,413 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2011-12-31 | $167,877,519 |
| Asset. Corporate debt instrument preferred debt at end of year | 2011-12-31 | $573,614,901 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2011-12-31 | $536,253,717 |
| Asset. Corporate debt instrument debt (other) at end of year | 2011-12-31 | $205,144,190 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2011-12-31 | $162,129,050 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2011-12-31 | $273,695,194 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2011-12-31 | $369,411,176 |
| Did the plan have assets held for investment | 2011-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2011-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2011-12-31 | No |
| Aggregate proceeds on sale of assets | 2011-12-31 | $1,514,160,577 |
| Aggregate carrying amount (costs) on sale of assets | 2011-12-31 | $1,451,859,980 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2011-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2011-12-31 | Unqualified |
| Accountancy firm name | 2011-12-31 | PRICEWATERHOUSE COOPERS |
| Accountancy firm EIN | 2011-12-31 | 134008324 |
| 2010 : AMEREN RETIREMENT PLAN 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2010-12-31 | $82,584,934 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $82,584,934 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $23,677,576 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $62,139,998 |
| Total income from all sources (including contributions) | 2010-12-31 | $392,949,024 |
| Total loss/gain on sale of assets | 2010-12-31 | $67,883,004 |
| Total of all expenses incurred | 2010-12-31 | $187,753,117 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2010-12-31 | $177,522,036 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2010-12-31 | $50,150,499 |
| Value of total assets at end of year | 2010-12-31 | $2,820,380,036 |
| Value of total assets at beginning of year | 2010-12-31 | $2,653,646,551 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $10,231,081 |
| Total interest from all sources | 2010-12-31 | $50,183,256 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $9,764,498 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2010-12-31 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2010-12-31 | $1,484,829 |
| Administrative expenses professional fees incurred | 2010-12-31 | $256,108 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2010-12-31 | $944,960 |
| Was this plan covered by a fidelity bond | 2010-12-31 | Yes |
| Value of fidelity bond cover | 2010-12-31 | $10,000,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2010-12-31 | No |
| Contributions received from participants | 2010-12-31 | $150,499 |
| Assets. Other investments not covered elsewhere at end of year | 2010-12-31 | $149,092,469 |
| Assets. Other investments not covered elsewhere at beginning of year | 2010-12-31 | $52,180,421 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2010-12-31 | $47,758,772 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2010-12-31 | $57,588,217 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2010-12-31 | $21,828,218 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2010-12-31 | $60,064,418 |
| Other income not declared elsewhere | 2010-12-31 | $2,358,128 |
| Administrative expenses (other) incurred | 2010-12-31 | $3,012,890 |
| Liabilities. Value of operating payables at end of year | 2010-12-31 | $1,849,358 |
| Liabilities. Value of operating payables at beginning of year | 2010-12-31 | $2,075,580 |
| Total non interest bearing cash at end of year | 2010-12-31 | $-82,885 |
| Total non interest bearing cash at beginning of year | 2010-12-31 | $-8,376 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2010-12-31 | No |
| Value of net income/loss | 2010-12-31 | $205,195,907 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $2,796,702,460 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $2,591,506,553 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2010-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2010-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2010-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2010-12-31 | $108,867,558 |
| Assets. partnership/joint venture interests at beginning of year | 2010-12-31 | $106,176,506 |
| Investment advisory and management fees | 2010-12-31 | $6,962,083 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2010-12-31 | $129,326,446 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2010-12-31 | $114,935,849 |
| Value of interest in pooled separate accounts at end of year | 2010-12-31 | $11,020,000 |
| Value of interest in pooled separate accounts at beginning of year | 2010-12-31 | $9,933,155 |
| Interest earned on other investments | 2010-12-31 | $7,119,846 |
| Income. Interest from US Government securities | 2010-12-31 | $2,692,530 |
| Income. Interest from corporate debt instruments | 2010-12-31 | $40,373,276 |
| Value of interest in common/collective trusts at end of year | 2010-12-31 | $898,688,762 |
| Value of interest in common/collective trusts at beginning of year | 2010-12-31 | $662,174,381 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2010-12-31 | $2,759,014 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2010-12-31 | $1,509,023 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2010-12-31 | $1,509,023 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2010-12-31 | $-2,396 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2010-12-31 | $204,349,711 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2010-12-31 | $177,404,945 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2010-12-31 | $0 |
| Asset value of US Government securities at end of year | 2010-12-31 | $151,806,246 |
| Asset value of US Government securities at beginning of year | 2010-12-31 | $220,823,100 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2010-12-31 | $4,303,824 |
| Net investment gain/loss from pooled separate accounts | 2010-12-31 | $1,416,754 |
| Net investment gain or loss from common/collective trusts | 2010-12-31 | $110,071,968 |
| Net gain/loss from 103.12 investment entities | 2010-12-31 | $14,232,159 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2010-12-31 | Yes |
| Was there a failure to transmit to the plan any participant contributions | 2010-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2010-12-31 | No |
| Assets. Invements in employer securities at beginning of year | 2010-12-31 | $1,006 |
| Contributions received in cash from employer | 2010-12-31 | $50,000,000 |
| Employer contributions (assets) at end of year | 2010-12-31 | $49,000,000 |
| Employer contributions (assets) at beginning of year | 2010-12-31 | $77,000,000 |
| Income. Dividends from preferred stock | 2010-12-31 | $3,517 |
| Income. Dividends from common stock | 2010-12-31 | $8,276,152 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2010-12-31 | $177,522,036 |
| Asset. Corporate debt instrument preferred debt at end of year | 2010-12-31 | $536,253,717 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2010-12-31 | $346,241,588 |
| Asset. Corporate debt instrument debt (other) at end of year | 2010-12-31 | $162,129,050 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2010-12-31 | $315,625,351 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2010-12-31 | $369,411,176 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2010-12-31 | $511,116,425 |
| Did the plan have assets held for investment | 2010-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2010-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2010-12-31 | No |
| Aggregate proceeds on sale of assets | 2010-12-31 | $2,984,597,882 |
| Aggregate carrying amount (costs) on sale of assets | 2010-12-31 | $2,916,714,878 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2010-12-31 | No |
| Opinion of an independent qualified public accountant for this plan | 2010-12-31 | Unqualified |
| Accountancy firm name | 2010-12-31 | PRICEWATERHOUSECOOPERS |
| Accountancy firm EIN | 2010-12-31 | 134008324 |
| 2009 : AMEREN RETIREMENT PLAN 2009 401k financial data |
|---|
| Funding deficiency by the employer to the plan for this plan year | 2009-12-31 | $0 |
| Minimum employer required contribution for this plan year | 2009-12-31 | $0 |
| Amount contributed by the employer to the plan for this plan year | 2009-12-31 | $123,000,000 |
