ATI INC. has sponsored the creation of one or more 401k plans.
Submission information for form 5500 for 401k plan ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST
| Measure | Date | Value |
|---|
| 2023 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2023 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2023-12-31 | $41,101,993 |
| Total unrealized appreciation/depreciation of assets | 2023-12-31 | $41,101,993 |
| Total transfer of assets to this plan | 2023-12-31 | $280,262,025 |
| Total transfer of assets from this plan | 2023-12-31 | $1,517,154,795 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $1,917,004 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $1,671,741 |
| Total income from all sources (including contributions) | 2023-12-31 | $-48,604,556 |
| Total loss/gain on sale of assets | 2023-12-31 | $-145,616,457 |
| Total of all expenses incurred | 2023-12-31 | $10,991,378 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2023-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2023-12-31 | $0 |
| Value of total assets at end of year | 2023-12-31 | $292,777,773 |
| Value of total assets at beginning of year | 2023-12-31 | $1,589,021,214 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2023-12-31 | $10,991,378 |
| Total interest from all sources | 2023-12-31 | $6,770,417 |
| Total dividends received (eg from common stock, registered investment company shares) | 2023-12-31 | $2,178,972 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2023-12-31 | $230,569 |
| Were there any nonexempt tranactions with any party-in-interest | 2023-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2023-12-31 | $-509,923 |
| Assets. Other investments not covered elsewhere at beginning of year | 2023-12-31 | $7,527,803 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2023-12-31 | $33,311,091 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2023-12-31 | $2,019,343 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2023-12-31 | $1,917,004 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2023-12-31 | $1,671,741 |
| Other income not declared elsewhere | 2023-12-31 | $7,204,900 |
| Administrative expenses (other) incurred | 2023-12-31 | $533,375 |
| Value of net income/loss | 2023-12-31 | $-59,595,934 |
| Value of net assets at end of year (total assets less liabilities) | 2023-12-31 | $290,860,769 |
| Value of net assets at beginning of year (total assets less liabilities) | 2023-12-31 | $1,587,349,473 |
| 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 | $130,566,649 |
| Assets. partnership/joint venture interests at beginning of year | 2023-12-31 | $558,007,979 |
| Investment advisory and management fees | 2023-12-31 | $10,458,003 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2023-12-31 | $0 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2023-12-31 | $14,847,192 |
| Interest earned on other investments | 2023-12-31 | $529,718 |
| Income. Interest from US Government securities | 2023-12-31 | $1,706,856 |
| Income. Interest from corporate debt instruments | 2023-12-31 | $4,471,064 |
| Value of interest in common/collective trusts at end of year | 2023-12-31 | $11,577,325 |
| Value of interest in common/collective trusts at beginning of year | 2023-12-31 | $654,921,914 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2023-12-31 | $62,779 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2023-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2023-12-31 | $33,980,856 |
| Asset value of US Government securities at end of year | 2023-12-31 | $117,832,631 |
| Asset value of US Government securities at beginning of year | 2023-12-31 | $7,469,659 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2023-12-31 | $1,187,606 |
| Net investment gain or loss from common/collective trusts | 2023-12-31 | $34,441,088 |
| Net gain/loss from 103.12 investment entities | 2023-12-31 | $4,126,925 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2023-12-31 | Yes |
| Income. Dividends from common stock | 2023-12-31 | $1,948,403 |
| Asset. Corporate debt instrument debt (other) at end of year | 2023-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2023-12-31 | $128,350,230 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2023-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2023-12-31 | $181,896,238 |
| Did the plan have assets held for investment | 2023-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2023-12-31 | $1,105,070,142 |
| Aggregate carrying amount (costs) on sale of assets | 2023-12-31 | $1,250,686,599 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2023-01-01 | $41,101,993 |
| Total unrealized appreciation/depreciation of assets | 2023-01-01 | $41,101,993 |
| Total transfer of assets to this plan | 2023-01-01 | $280,262,025 |
| Total transfer of assets from this plan | 2023-01-01 | $1,517,154,795 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-01-01 | $1,917,004 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-01-01 | $1,671,741 |
| Total income from all sources (including contributions) | 2023-01-01 | $-48,604,556 |
| Total loss/gain on sale of assets | 2023-01-01 | $-145,616,457 |
| Total of all expenses incurred | 2023-01-01 | $10,991,378 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2023-01-01 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2023-01-01 | $0 |
| Value of total assets at end of year | 2023-01-01 | $292,777,773 |
| Value of total assets at beginning of year | 2023-01-01 | $1,589,021,214 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2023-01-01 | $10,991,378 |
| Total interest from all sources | 2023-01-01 | $6,770,417 |
| Total dividends received (eg from common stock, registered investment company shares) | 2023-01-01 | $2,178,972 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2023-01-01 | $230,569 |
| Were there any nonexempt tranactions with any party-in-interest | 2023-01-01 | No |
| Assets. Other investments not covered elsewhere at end of year | 2023-01-01 | $-509,923 |
| Assets. Other investments not covered elsewhere at beginning of year | 2023-01-01 | $7,527,803 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2023-01-01 | $33,311,091 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2023-01-01 | $2,019,343 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2023-01-01 | $1,917,004 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2023-01-01 | $1,671,741 |
| Other income not declared elsewhere | 2023-01-01 | $7,204,900 |
| Administrative expenses (other) incurred | 2023-01-01 | $533,375 |
| Value of net income/loss | 2023-01-01 | $-59,595,934 |
| Value of net assets at end of year (total assets less liabilities) | 2023-01-01 | $290,860,769 |
| Value of net assets at beginning of year (total assets less liabilities) | 2023-01-01 | $1,587,349,473 |
| 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 | $130,566,649 |
| Assets. partnership/joint venture interests at beginning of year | 2023-01-01 | $558,007,979 |
| Investment advisory and management fees | 2023-01-01 | $10,458,003 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2023-01-01 | $0 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2023-01-01 | $14,847,192 |
| Interest earned on other investments | 2023-01-01 | $529,718 |
| Income. Interest from US Government securities | 2023-01-01 | $1,706,856 |
| Income. Interest from corporate debt instruments | 2023-01-01 | $4,471,064 |
| Value of interest in common/collective trusts at end of year | 2023-01-01 | $11,577,325 |
| Value of interest in common/collective trusts at beginning of year | 2023-01-01 | $654,921,914 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2023-01-01 | $62,779 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2023-01-01 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2023-01-01 | $33,980,856 |
| Asset value of US Government securities at end of year | 2023-01-01 | $117,832,631 |
| Asset value of US Government securities at beginning of year | 2023-01-01 | $7,469,659 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2023-01-01 | $1,187,606 |
| Net investment gain or loss from common/collective trusts | 2023-01-01 | $34,441,088 |
| Net gain/loss from 103.12 investment entities | 2023-01-01 | $4,126,925 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2023-01-01 | Yes |
| Income. Dividends from common stock | 2023-01-01 | $1,948,403 |
| Asset. Corporate debt instrument debt (other) at end of year | 2023-01-01 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2023-01-01 | $128,350,230 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2023-01-01 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2023-01-01 | $181,896,238 |
| Did the plan have assets held for investment | 2023-01-01 | Yes |
| Aggregate proceeds on sale of assets | 2023-01-01 | $1,105,070,142 |
| Aggregate carrying amount (costs) on sale of assets | 2023-01-01 | $1,250,686,599 |
| 2022 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2022 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-12-31 | $-101,374,317 |
| Total unrealized appreciation/depreciation of assets | 2022-12-31 | $-101,374,317 |
| Total transfer of assets to this plan | 2022-12-31 | $59,020,664 |
| Total transfer of assets from this plan | 2022-12-31 | $167,165,446 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $1,671,741 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $2,027,449 |
| Total income from all sources (including contributions) | 2022-12-31 | $-314,443,261 |
| Total loss/gain on sale of assets | 2022-12-31 | $-17,125,483 |
| Total of all expenses incurred | 2022-12-31 | $13,440,932 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2022-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2022-12-31 | $0 |
| Value of total assets at end of year | 2022-12-31 | $1,589,021,214 |
| Value of total assets at beginning of year | 2022-12-31 | $2,025,405,897 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-12-31 | $13,440,932 |
| Total interest from all sources | 2022-12-31 | $4,848,404 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-12-31 | $3,043,207 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2022-12-31 | $348,801 |
| 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 | $7,527,803 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-12-31 | $9,605,218 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-12-31 | $2,019,343 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-12-31 | $1,686,781 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-12-31 | $1,671,741 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-12-31 | $2,027,449 |
| Other income not declared elsewhere | 2022-12-31 | $7,061,263 |
| Administrative expenses (other) incurred | 2022-12-31 | $171,398 |
| Value of net income/loss | 2022-12-31 | $-327,884,193 |
| Value of net assets at end of year (total assets less liabilities) | 2022-12-31 | $1,587,349,473 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-12-31 | $2,023,378,448 |
| 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 | $558,007,979 |
| Assets. partnership/joint venture interests at beginning of year | 2022-12-31 | $616,995,976 |
| Investment advisory and management fees | 2022-12-31 | $13,269,534 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2022-12-31 | $14,847,192 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2022-12-31 | $12,176,572 |
| Interest earned on other investments | 2022-12-31 | $428,908 |
| Income. Interest from US Government securities | 2022-12-31 | $146,365 |
| Income. Interest from corporate debt instruments | 2022-12-31 | $4,250,922 |
| Value of interest in common/collective trusts at end of year | 2022-12-31 | $654,921,914 |
| Value of interest in common/collective trusts at beginning of year | 2022-12-31 | $878,839,825 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-12-31 | $22,209 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2022-12-31 | $33,980,856 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2022-12-31 | $67,386,008 |
| Asset value of US Government securities at end of year | 2022-12-31 | $7,469,659 |
| Asset value of US Government securities at beginning of year | 2022-12-31 | $7,959,662 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2022-12-31 | $-3,178,181 |
| Net investment gain or loss from common/collective trusts | 2022-12-31 | $-195,203,096 |
| Net gain/loss from 103.12 investment entities | 2022-12-31 | $-12,515,058 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2022-12-31 | Yes |
| Income. Dividends from common stock | 2022-12-31 | $2,694,406 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-12-31 | $128,350,230 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-12-31 | $174,951,256 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2022-12-31 | $181,896,238 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2022-12-31 | $255,804,599 |
| Did the plan have assets held for investment | 2022-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2022-12-31 | $313,925,366 |
| Aggregate carrying amount (costs) on sale of assets | 2022-12-31 | $331,050,849 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-01-01 | $-101,374,317 |
| Total unrealized appreciation/depreciation of assets | 2022-01-01 | $-101,374,317 |
| Total transfer of assets to this plan | 2022-01-01 | $59,020,664 |
| Total transfer of assets from this plan | 2022-01-01 | $167,165,446 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-01-01 | $1,671,741 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-01-01 | $2,027,449 |
| Total income from all sources (including contributions) | 2022-01-01 | $-314,443,261 |
| Total loss/gain on sale of assets | 2022-01-01 | $-17,125,483 |
| Total of all expenses incurred | 2022-01-01 | $13,440,932 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2022-01-01 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2022-01-01 | $0 |
| Value of total assets at end of year | 2022-01-01 | $1,589,021,214 |
| Value of total assets at beginning of year | 2022-01-01 | $2,025,405,897 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-01-01 | $13,440,932 |
| Total interest from all sources | 2022-01-01 | $4,848,404 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-01-01 | $3,043,207 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2022-01-01 | $348,801 |
| 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 | $7,527,803 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-01-01 | $9,605,218 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-01-01 | $2,019,343 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-01-01 | $1,686,781 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-01-01 | $1,671,741 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-01-01 | $2,027,449 |
| Other income not declared elsewhere | 2022-01-01 | $7,061,263 |
| Administrative expenses (other) incurred | 2022-01-01 | $171,398 |
| Value of net income/loss | 2022-01-01 | $-327,884,193 |
| Value of net assets at end of year (total assets less liabilities) | 2022-01-01 | $1,587,349,473 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-01-01 | $2,023,378,448 |
| 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 | $558,007,979 |
| Assets. partnership/joint venture interests at beginning of year | 2022-01-01 | $616,995,976 |
| Investment advisory and management fees | 2022-01-01 | $13,269,534 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2022-01-01 | $14,847,192 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2022-01-01 | $12,176,572 |
| Interest earned on other investments | 2022-01-01 | $428,908 |
| Income. Interest from US Government securities | 2022-01-01 | $146,365 |
| Income. Interest from corporate debt instruments | 2022-01-01 | $4,250,922 |
| Value of interest in common/collective trusts at end of year | 2022-01-01 | $654,921,914 |
| Value of interest in common/collective trusts at beginning of year | 2022-01-01 | $878,839,825 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-01-01 | $22,209 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2022-01-01 | $33,980,856 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2022-01-01 | $67,386,008 |
| Asset value of US Government securities at end of year | 2022-01-01 | $7,469,659 |
| Asset value of US Government securities at beginning of year | 2022-01-01 | $7,959,662 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2022-01-01 | $-3,178,181 |
| Net investment gain or loss from common/collective trusts | 2022-01-01 | $-195,203,096 |
| Net gain/loss from 103.12 investment entities | 2022-01-01 | $-12,515,058 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2022-01-01 | Yes |
| Income. Dividends from common stock | 2022-01-01 | $2,694,406 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-01-01 | $128,350,230 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-01-01 | $174,951,256 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2022-01-01 | $181,896,238 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2022-01-01 | $255,804,599 |
| Did the plan have assets held for investment | 2022-01-01 | Yes |
| Aggregate proceeds on sale of assets | 2022-01-01 | $313,925,366 |
| Aggregate carrying amount (costs) on sale of assets | 2022-01-01 | $331,050,849 |
| 2021 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2021 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2021-12-31 | $113,091,356 |
| Total unrealized appreciation/depreciation of assets | 2021-12-31 | $113,091,356 |
| Total transfer of assets to this plan | 2021-12-31 | $129,826,715 |
| Total transfer of assets from this plan | 2021-12-31 | $297,862,493 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $2,027,449 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $3,683,280 |
| Expenses. Interest paid | 2021-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2021-12-31 | $0 |
| Total income from all sources (including contributions) | 2021-12-31 | $268,718,434 |
| Total loss/gain on sale of assets | 2021-12-31 | $64,122,062 |
| Total of all expenses incurred | 2021-12-31 | $24,482,060 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2021-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2021-12-31 | $0 |
| Value of total assets at end of year | 2021-12-31 | $2,025,405,897 |
| Value of total assets at beginning of year | 2021-12-31 | $1,950,861,132 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-12-31 | $24,482,060 |
| Total interest from all sources | 2021-12-31 | $5,106,031 |
| Total dividends received (eg from common stock, registered investment company shares) | 2021-12-31 | $2,958,386 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2021-12-31 | $237,408 |
| 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 | $9,605,218 |
| Assets. Other investments not covered elsewhere at beginning of year | 2021-12-31 | $59,063,922 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2021-12-31 | $1,686,781 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2021-12-31 | $9,608,186 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2021-12-31 | $2,027,449 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2021-12-31 | $3,683,280 |
| Other income not declared elsewhere | 2021-12-31 | $8,542,287 |
| Administrative expenses (other) incurred | 2021-12-31 | $218,482 |
| Value of net income/loss | 2021-12-31 | $244,236,374 |
| Value of net assets at end of year (total assets less liabilities) | 2021-12-31 | $2,023,378,448 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-12-31 | $1,947,177,852 |
| 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 | $616,995,976 |
| Assets. partnership/joint venture interests at beginning of year | 2021-12-31 | $565,969,926 |
| Investment advisory and management fees | 2021-12-31 | $24,263,578 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2021-12-31 | $12,176,572 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2021-12-31 | $11,686,589 |
| Interest earned on other investments | 2021-12-31 | $492,715 |
| Income. Interest from US Government securities | 2021-12-31 | $110,106 |
| Income. Interest from corporate debt instruments | 2021-12-31 | $4,505,051 |
| Value of interest in common/collective trusts at end of year | 2021-12-31 | $878,839,825 |
| Value of interest in common/collective trusts at beginning of year | 2021-12-31 | $776,204,340 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2021-12-31 | $-1,841 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2021-12-31 | $67,386,008 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2021-12-31 | $84,288,450 |
| Asset value of US Government securities at end of year | 2021-12-31 | $7,959,662 |
| Asset value of US Government securities at beginning of year | 2021-12-31 | $3,079,551 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2021-12-31 | $1,761,255 |
| Net investment gain or loss from common/collective trusts | 2021-12-31 | $60,335,112 |
| Net gain/loss from 103.12 investment entities | 2021-12-31 | $12,801,945 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2021-12-31 | Yes |
| Income. Dividends from common stock | 2021-12-31 | $2,720,978 |
| Asset. Corporate debt instrument debt (other) at end of year | 2021-12-31 | $174,951,256 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2021-12-31 | $207,247,533 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2021-12-31 | $255,804,599 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2021-12-31 | $233,712,635 |
| Did the plan have assets held for investment | 2021-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2021-12-31 | $374,703,181 |
| Aggregate carrying amount (costs) on sale of assets | 2021-12-31 | $310,581,119 |
| 2020 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2020 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2020-12-31 | $97,760,130 |
| Total unrealized appreciation/depreciation of assets | 2020-12-31 | $97,760,130 |
| Total transfer of assets to this plan | 2020-12-31 | $132,264,135 |
| Total transfer of assets from this plan | 2020-12-31 | $261,943,947 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $3,683,280 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $2,692,178 |
| Expenses. Interest paid | 2020-12-31 | $-2,198,226 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2020-12-31 | $-2,198,226 |
| Total income from all sources (including contributions) | 2020-12-31 | $294,104,861 |
| Total loss/gain on sale of assets | 2020-12-31 | $9,725,842 |
| Total of all expenses incurred | 2020-12-31 | $19,668,838 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2020-12-31 | $0 |
| 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 | $1,950,861,132 |
| Value of total assets at beginning of year | 2020-12-31 | $1,805,113,819 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $21,867,064 |
| Total interest from all sources | 2020-12-31 | $5,429,343 |
| Total dividends received (eg from common stock, registered investment company shares) | 2020-12-31 | $3,427,620 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2020-12-31 | $300,189 |
| 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 | $59,063,922 |
| Assets. Other investments not covered elsewhere at beginning of year | 2020-12-31 | $25,624,812 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $9,608,186 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $2,526,796 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $3,683,280 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $2,692,178 |
| Other income not declared elsewhere | 2020-12-31 | $5,025,989 |
| Administrative expenses (other) incurred | 2020-12-31 | $92,753 |
| Value of net income/loss | 2020-12-31 | $274,436,023 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $1,947,177,852 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $1,802,421,641 |
| 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 | $565,969,926 |
| Assets. partnership/joint venture interests at beginning of year | 2020-12-31 | $539,395,870 |
| Investment advisory and management fees | 2020-12-31 | $21,774,311 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2020-12-31 | $11,686,589 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2020-12-31 | $12,608,049 |
| Interest earned on other investments | 2020-12-31 | $504,089 |
| Income. Interest from US Government securities | 2020-12-31 | $39,354 |
| Income. Interest from corporate debt instruments | 2020-12-31 | $4,858,299 |
| Value of interest in common/collective trusts at end of year | 2020-12-31 | $776,204,340 |
| Value of interest in common/collective trusts at beginning of year | 2020-12-31 | $709,252,629 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $27,601 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2020-12-31 | $84,288,450 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2020-12-31 | $97,391,984 |
| Asset value of US Government securities at end of year | 2020-12-31 | $3,079,551 |
| Asset value of US Government securities at beginning of year | 2020-12-31 | $3,515,529 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2020-12-31 | $877,293 |
| Net investment gain or loss from common/collective trusts | 2020-12-31 | $165,702,738 |
| Net gain/loss from 103.12 investment entities | 2020-12-31 | $6,155,906 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2020-12-31 | Yes |
| Income. Dividends from common stock | 2020-12-31 | $3,127,431 |
| Asset. Corporate debt instrument debt (other) at end of year | 2020-12-31 | $207,247,533 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2020-12-31 | $184,658,570 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2020-12-31 | $233,712,635 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2020-12-31 | $230,139,580 |
| Did the plan have assets held for investment | 2020-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2020-12-31 | $401,097,858 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $391,372,016 |
| 2019 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2019 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $80,259,979 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $80,259,979 |
| Total transfer of assets to this plan | 2019-12-31 | $148,753,663 |
| Total transfer of assets from this plan | 2019-12-31 | $283,157,101 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $2,692,178 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $6,219,204 |
| Expenses. Interest paid | 2019-12-31 | $-343,863 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2019-12-31 | $-343,863 |
| Total income from all sources (including contributions) | 2019-12-31 | $274,675,301 |
| Total loss/gain on sale of assets | 2019-12-31 | $29,460,861 |
| Total of all expenses incurred | 2019-12-31 | $16,043,558 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2019-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2019-12-31 | $0 |
| Value of total assets at end of year | 2019-12-31 | $1,805,113,819 |
| Value of total assets at beginning of year | 2019-12-31 | $1,684,412,540 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $16,387,421 |
| Total interest from all sources | 2019-12-31 | $7,273,493 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $3,795,330 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2019-12-31 | $443,584 |
| 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 | $25,624,812 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $19,555,381 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $2,526,796 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $26,630,163 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $2,692,178 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $6,219,204 |
| Other income not declared elsewhere | 2019-12-31 | $8,981,812 |
| Administrative expenses (other) incurred | 2019-12-31 | $343,810 |
| Value of net income/loss | 2019-12-31 | $258,631,743 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $1,802,421,641 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $1,678,193,336 |
| 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 |
| Assets. partnership/joint venture interests at end of year | 2019-12-31 | $539,395,870 |
| Assets. partnership/joint venture interests at beginning of year | 2019-12-31 | $566,338,766 |
| Investment advisory and management fees | 2019-12-31 | $16,043,611 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2019-12-31 | $12,608,049 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2019-12-31 | $10,974,859 |
| Interest earned on other investments | 2019-12-31 | $530,500 |
| Income. Interest from US Government securities | 2019-12-31 | $891,029 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $5,692,254 |
| Value of interest in common/collective trusts at end of year | 2019-12-31 | $709,252,629 |
| Value of interest in common/collective trusts at beginning of year | 2019-12-31 | $353,738,572 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $159,710 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2019-12-31 | $97,391,984 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2019-12-31 | $122,798,417 |
| Asset value of US Government securities at end of year | 2019-12-31 | $3,515,529 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $155,660,283 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2019-12-31 | $2,400,394 |
| Net investment gain or loss from common/collective trusts | 2019-12-31 | $126,223,637 |
| Net gain/loss from 103.12 investment entities | 2019-12-31 | $16,279,795 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2019-12-31 | Yes |
| Income. Dividends from common stock | 2019-12-31 | $3,351,746 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $184,658,570 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $247,784,193 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2019-12-31 | $230,139,580 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2019-12-31 | $180,931,906 |
| Did the plan have assets held for investment | 2019-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2019-12-31 | $562,200,092 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $532,739,231 |
| 2018 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $-73,947,550 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $-73,947,550 |
| Total transfer of assets to this plan | 2018-12-31 | $88,061,756 |
| Total transfer of assets from this plan | 2018-12-31 | $349,552,740 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $6,219,204 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $1,503,378 |
| Total income from all sources (including contributions) | 2018-12-31 | $-81,411,598 |
| Total loss/gain on sale of assets | 2018-12-31 | $29,160,971 |
| Total of all expenses incurred | 2018-12-31 | $19,066,579 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2018-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2018-12-31 | $0 |
| Value of total assets at end of year | 2018-12-31 | $1,684,412,540 |
| Value of total assets at beginning of year | 2018-12-31 | $2,041,665,875 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $19,066,579 |
| Total interest from all sources | 2018-12-31 | $14,855,709 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $7,007,659 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2018-12-31 | $257,735 |
| 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 | $19,555,381 |
| Assets. Other investments not covered elsewhere at beginning of year | 2018-12-31 | $13,144,031 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $26,630,163 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $58,650,901 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $6,219,204 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $1,503,378 |
| Other income not declared elsewhere | 2018-12-31 | $8,803,675 |
| Administrative expenses (other) incurred | 2018-12-31 | $606,926 |
| Value of net income/loss | 2018-12-31 | $-100,478,177 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $1,678,193,336 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $2,040,162,497 |
| 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 | $566,338,766 |
| Assets. partnership/joint venture interests at beginning of year | 2018-12-31 | $607,470,261 |
| Investment advisory and management fees | 2018-12-31 | $18,459,653 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2018-12-31 | $10,974,859 |
| Interest earned on other investments | 2018-12-31 | $881,269 |
| Income. Interest from US Government securities | 2018-12-31 | $4,675,530 |
| Income. Interest from corporate debt instruments | 2018-12-31 | $9,271,647 |
| Value of interest in common/collective trusts at end of year | 2018-12-31 | $353,738,572 |
| Value of interest in common/collective trusts at beginning of year | 2018-12-31 | $574,792,612 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $27,263 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2018-12-31 | $122,798,417 |
| Asset value of US Government securities at end of year | 2018-12-31 | $155,660,283 |
| Asset value of US Government securities at beginning of year | 2018-12-31 | $136,158,181 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2018-12-31 | $-817,597 |
| Net investment gain or loss from common/collective trusts | 2018-12-31 | $-45,022,360 |
| Net gain/loss from 103.12 investment entities | 2018-12-31 | $-21,452,105 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2018-12-31 | No |
| Assets. Invements in employer securities at beginning of year | 2018-12-31 | $71,321,051 |
| Income. Dividends from common stock | 2018-12-31 | $6,749,924 |
| Asset. Corporate debt instrument debt (other) at end of year | 2018-12-31 | $247,784,193 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2018-12-31 | $393,215,927 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2018-12-31 | $180,931,906 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2018-12-31 | $186,912,911 |
| Did the plan have assets held for investment | 2018-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2018-12-31 | $698,343,766 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $669,182,795 |
| 2017 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2017-12-31 | $134,182,483 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $134,182,483 |
| Total transfer of assets to this plan | 2017-12-31 | $137,250,623 |
| Total transfer of assets from this plan | 2017-12-31 | $230,661,512 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $1,503,378 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $5,655,259 |
| Total income from all sources (including contributions) | 2017-12-31 | $336,385,588 |
| Total loss/gain on sale of assets | 2017-12-31 | $27,563,729 |
| Total of all expenses incurred | 2017-12-31 | $22,851,386 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2017-12-31 | $0 |
| 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 | $2,041,665,875 |
| Value of total assets at beginning of year | 2017-12-31 | $1,825,694,443 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $22,851,386 |
| Total interest from all sources | 2017-12-31 | $14,582,561 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $9,251,865 |
| 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 | $13,144,031 |
| Assets. Other investments not covered elsewhere at beginning of year | 2017-12-31 | $6,743,656 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $58,650,901 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $5,742,041 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $1,503,378 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $5,655,259 |
| Other income not declared elsewhere | 2017-12-31 | $5,945,880 |
| Administrative expenses (other) incurred | 2017-12-31 | $421,708 |
| Value of net income/loss | 2017-12-31 | $313,534,202 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $2,040,162,497 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $1,820,039,184 |
| 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 | $607,470,261 |
| Assets. partnership/joint venture interests at beginning of year | 2017-12-31 | $467,935,540 |
| Investment advisory and management fees | 2017-12-31 | $22,429,678 |
| Interest earned on other investments | 2017-12-31 | $1,065,363 |
| Income. Interest from US Government securities | 2017-12-31 | $4,229,853 |
| Income. Interest from corporate debt instruments | 2017-12-31 | $9,287,020 |
| Value of interest in common/collective trusts at end of year | 2017-12-31 | $574,792,612 |
| Value of interest in common/collective trusts at beginning of year | 2017-12-31 | $621,716,608 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $325 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2017-12-31 | $205,114 |
| Asset value of US Government securities at end of year | 2017-12-31 | $136,158,181 |
| Asset value of US Government securities at beginning of year | 2017-12-31 | $124,106,487 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2017-12-31 | $195,661 |
| Net investment gain or loss from common/collective trusts | 2017-12-31 | $144,663,409 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2017-12-31 | Yes |
| Assets. Invements in employer securities at end of year | 2017-12-31 | $71,321,051 |
| Assets. Invements in employer securities at beginning of year | 2017-12-31 | $47,064,803 |
| Income. Dividends from preferred stock | 2017-12-31 | $9,660 |
| Income. Dividends from common stock | 2017-12-31 | $9,242,205 |
| Asset. Corporate debt instrument debt (other) at end of year | 2017-12-31 | $393,215,927 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2017-12-31 | $416,076,600 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2017-12-31 | $186,912,911 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2017-12-31 | $136,103,594 |
| Did the plan have assets held for investment | 2017-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2017-12-31 | $500,863,712 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $473,299,983 |
| 2016 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2016-12-31 | $2,002,670 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $2,002,670 |
| Total transfer of assets to this plan | 2016-12-31 | $231,098,493 |
| Total transfer of assets from this plan | 2016-12-31 | $380,151,600 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $5,655,259 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $30,352,127 |
| Total income from all sources (including contributions) | 2016-12-31 | $109,359,105 |
| Total loss/gain on sale of assets | 2016-12-31 | $30,931,786 |
| Total of all expenses incurred | 2016-12-31 | $17,819,108 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2016-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2016-12-31 | $0 |
| Value of total assets at end of year | 2016-12-31 | $1,825,694,443 |
| Value of total assets at beginning of year | 2016-12-31 | $1,907,904,421 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $17,819,108 |
| Total interest from all sources | 2016-12-31 | $11,973,170 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $10,318,070 |
| 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 | $6,743,656 |
| Assets. Other investments not covered elsewhere at beginning of year | 2016-12-31 | $4,601,734 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $5,742,041 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $34,211,492 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $5,655,259 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $30,352,127 |
| Other income not declared elsewhere | 2016-12-31 | $3,118,014 |
| Administrative expenses (other) incurred | 2016-12-31 | $491,326 |
| Value of net income/loss | 2016-12-31 | $91,539,997 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $1,820,039,184 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $1,877,552,294 |
| 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 | $467,935,540 |
| Assets. partnership/joint venture interests at beginning of year | 2016-12-31 | $296,911,136 |
| Investment advisory and management fees | 2016-12-31 | $17,327,782 |
| Interest earned on other investments | 2016-12-31 | $577,949 |
| Income. Interest from US Government securities | 2016-12-31 | $1,942,723 |
| Income. Interest from corporate debt instruments | 2016-12-31 | $9,451,795 |
| Value of interest in common/collective trusts at end of year | 2016-12-31 | $621,716,608 |
| Value of interest in common/collective trusts at beginning of year | 2016-12-31 | $831,210,725 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $703 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2016-12-31 | $205,114 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2016-12-31 | $259,119 |
| Asset value of US Government securities at end of year | 2016-12-31 | $124,106,487 |
| Asset value of US Government securities at beginning of year | 2016-12-31 | $13,638,562 |
| Net investment gain or loss from common/collective trusts | 2016-12-31 | $51,015,395 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2016-12-31 | Yes |
| Assets. Invements in employer securities at end of year | 2016-12-31 | $47,064,803 |
| Assets. Invements in employer securities at beginning of year | 2016-12-31 | $33,237,855 |
| Income. Dividends from preferred stock | 2016-12-31 | $31,968 |
| Income. Dividends from common stock | 2016-12-31 | $10,286,102 |
| Asset. Corporate debt instrument debt (other) at end of year | 2016-12-31 | $416,076,600 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2016-12-31 | $438,817,731 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2016-12-31 | $136,103,594 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2016-12-31 | $255,016,067 |
| Did the plan have assets held for investment | 2016-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2016-12-31 | $1,295,595,829 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $1,264,664,043 |
| 2015 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2015-12-31 | $-77,575,133 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-77,575,133 |
| Total transfer of assets to this plan | 2015-12-31 | $2,665,733 |
| Total transfer of assets from this plan | 2015-12-31 | $219,021,264 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $30,352,127 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $67,275,582 |
| Total income from all sources (including contributions) | 2015-12-31 | $-9,851,627 |
| Total loss/gain on sale of assets | 2015-12-31 | $6,396,619 |
| Total of all expenses incurred | 2015-12-31 | $15,031,520 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2015-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2015-12-31 | $0 |
| Value of total assets at end of year | 2015-12-31 | $1,907,904,421 |
| Value of total assets at beginning of year | 2015-12-31 | $2,186,066,554 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $15,031,520 |
| Total interest from all sources | 2015-12-31 | $18,525,365 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $10,187,198 |
| 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 | $4,601,734 |
| Assets. Other investments not covered elsewhere at beginning of year | 2015-12-31 | $5,602,019 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $34,211,492 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $62,380,885 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $30,352,127 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2015-12-31 | $67,275,582 |
| Other income not declared elsewhere | 2015-12-31 | $13,527,803 |
| Administrative expenses (other) incurred | 2015-12-31 | $430,126 |
| Value of net income/loss | 2015-12-31 | $-24,883,147 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $1,877,552,294 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $2,118,790,972 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2015-12-31 | Yes |
| Amount of loans by the plan or fixed income obligations due to the plan which were in default/classified-as-uncollectible as of the close of the plan year | 2015-12-31 | $280,000 |
| 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 | $296,911,136 |
| Assets. partnership/joint venture interests at beginning of year | 2015-12-31 | $289,379,651 |
| Investment advisory and management fees | 2015-12-31 | $14,601,394 |
| Interest earned on other investments | 2015-12-31 | $475,524 |
| Income. Interest from US Government securities | 2015-12-31 | $82,559 |
| Income. Interest from corporate debt instruments | 2015-12-31 | $17,965,868 |
| Value of interest in common/collective trusts at end of year | 2015-12-31 | $831,210,725 |
| Value of interest in common/collective trusts at beginning of year | 2015-12-31 | $905,983,776 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2015-12-31 | $1,414 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2015-12-31 | $259,119 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2015-12-31 | $328,369 |
| Asset value of US Government securities at end of year | 2015-12-31 | $13,638,562 |
| Asset value of US Government securities at beginning of year | 2015-12-31 | $5,554,498 |
| Net investment gain or loss from common/collective trusts | 2015-12-31 | $19,086,521 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2015-12-31 | Yes |
| Assets. Invements in employer securities at end of year | 2015-12-31 | $33,237,855 |
| Assets. Invements in employer securities at beginning of year | 2015-12-31 | $102,727,130 |
| Income. Dividends from preferred stock | 2015-12-31 | $57,500 |
| Income. Dividends from common stock | 2015-12-31 | $10,129,698 |
| Asset. Corporate debt instrument debt (other) at end of year | 2015-12-31 | $438,817,731 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2015-12-31 | $507,773,082 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2015-12-31 | $255,016,067 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2015-12-31 | $306,337,144 |
| Did the plan have assets held for investment | 2015-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2015-12-31 | $755,432,540 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $749,035,921 |
| 2014 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $48,867,845 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $48,867,845 |
| Total transfer of assets to this plan | 2014-12-31 | $2,227,540 |
| Total transfer of assets from this plan | 2014-12-31 | $271,682,731 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $67,275,582 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $44,839,061 |
| Total income from all sources (including contributions) | 2014-12-31 | $163,667,815 |
| Total loss/gain on sale of assets | 2014-12-31 | $8,979,400 |
| Total of all expenses incurred | 2014-12-31 | $17,454,463 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2014-12-31 | $0 |
| 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 | $2,186,066,554 |
| Value of total assets at beginning of year | 2014-12-31 | $2,286,871,872 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $17,454,463 |
| Total interest from all sources | 2014-12-31 | $19,365,525 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $8,357,994 |
| 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 | $5,602,019 |
| Assets. Other investments not covered elsewhere at beginning of year | 2014-12-31 | $5,056,400 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $62,380,885 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $52,749,557 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2014-12-31 | $67,275,582 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2014-12-31 | $44,839,061 |
| Other income not declared elsewhere | 2014-12-31 | $9,195,447 |
| Administrative expenses (other) incurred | 2014-12-31 | $228,946 |
| Value of net income/loss | 2014-12-31 | $146,213,352 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $2,118,790,972 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $2,242,032,811 |
| 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 | $289,379,651 |
| Assets. partnership/joint venture interests at beginning of year | 2014-12-31 | $245,334,284 |
| Investment advisory and management fees | 2014-12-31 | $17,225,517 |
| Interest earned on other investments | 2014-12-31 | $558,611 |
| Income. Interest from US Government securities | 2014-12-31 | $60,867 |
| Income. Interest from corporate debt instruments | 2014-12-31 | $18,745,729 |
| Value of interest in common/collective trusts at end of year | 2014-12-31 | $905,983,776 |
| Value of interest in common/collective trusts at beginning of year | 2014-12-31 | $1,203,267,182 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $318 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2014-12-31 | $328,369 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2014-12-31 | $867,412 |
| Asset value of US Government securities at end of year | 2014-12-31 | $5,554,498 |
| Asset value of US Government securities at beginning of year | 2014-12-31 | $23,071,633 |
| Net investment gain/loss from pooled separate accounts | 2014-12-31 | $68,901,604 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2014-12-31 | Yes |
| Assets. Invements in employer securities at end of year | 2014-12-31 | $102,727,130 |
| Assets. Invements in employer securities at beginning of year | 2014-12-31 | $105,267,980 |
| Income. Dividends from preferred stock | 2014-12-31 | $44,563 |
| Income. Dividends from common stock | 2014-12-31 | $8,313,431 |
| Asset. Corporate debt instrument debt (other) at end of year | 2014-12-31 | $507,773,082 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2014-12-31 | $395,144,339 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2014-12-31 | $306,337,144 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2014-12-31 | $256,113,085 |
| Did the plan have assets held for investment | 2014-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2014-12-31 | $483,687,540 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $474,708,140 |
| 2013 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $73,656,737 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $73,656,737 |
| Total transfer of assets to this plan | 2013-12-31 | $884,383 |
| Total transfer of assets from this plan | 2013-12-31 | $195,598,645 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $44,839,061 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $53,156,188 |
| Total income from all sources (including contributions) | 2013-12-31 | $301,201,661 |
| Total loss/gain on sale of assets | 2013-12-31 | $18,305,464 |
| Total of all expenses incurred | 2013-12-31 | $14,077,532 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2013-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2013-12-31 | $0 |
| Value of total assets at end of year | 2013-12-31 | $2,286,871,872 |
| Value of total assets at beginning of year | 2013-12-31 | $2,202,779,132 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $14,077,532 |
| Total interest from all sources | 2013-12-31 | $10,343,292 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $6,515,151 |
| 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 | $5,056,400 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $32,262,794 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $52,749,557 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $41,420,688 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2013-12-31 | $44,839,061 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $53,156,188 |
| Other income not declared elsewhere | 2013-12-31 | $1,608,069 |
| Administrative expenses (other) incurred | 2013-12-31 | $304,487 |
| Value of net income/loss | 2013-12-31 | $287,124,129 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $2,242,032,811 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $2,149,622,944 |
| 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 | $245,334,284 |
| Assets. partnership/joint venture interests at beginning of year | 2013-12-31 | $241,453,752 |
| Investment advisory and management fees | 2013-12-31 | $13,773,045 |
| Interest earned on other investments | 2013-12-31 | $476,825 |
| Income. Interest from US Government securities | 2013-12-31 | $330,949 |
| Income. Interest from corporate debt instruments | 2013-12-31 | $9,532,789 |
| Value of interest in common/collective trusts at end of year | 2013-12-31 | $1,203,267,182 |
| Value of interest in common/collective trusts at beginning of year | 2013-12-31 | $1,426,425,985 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $2,729 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2013-12-31 | $867,412 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2013-12-31 | $1,475,216 |
| Asset value of US Government securities at end of year | 2013-12-31 | $23,071,633 |
| Asset value of US Government securities at beginning of year | 2013-12-31 | $30,036,995 |
| Net investment gain or loss from common/collective trusts | 2013-12-31 | $190,582,318 |
| Net gain/loss from 103.12 investment entities | 2013-12-31 | $190,630 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2013-12-31 | Yes |
| Assets. Invements in employer securities at end of year | 2013-12-31 | $105,267,980 |
| Assets. Invements in employer securities at beginning of year | 2013-12-31 | $89,697,891 |
| Income. Dividends from common stock | 2013-12-31 | $6,515,151 |
| Asset. Corporate debt instrument debt (other) at end of year | 2013-12-31 | $395,144,339 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2013-12-31 | $150,601,434 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2013-12-31 | $256,113,085 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2013-12-31 | $189,404,377 |
| Did the plan have assets held for investment | 2013-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2013-12-31 | $507,599,624 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $489,294,160 |
| 2012 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2012 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2012-12-31 | $-12,166,933 |
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $-12,166,933 |
| Total transfer of assets to this plan | 2012-12-31 | $4,072,755 |
| Total transfer of assets from this plan | 2012-12-31 | $192,287,327 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $53,156,188 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $103,083,281 |
| Total income from all sources (including contributions) | 2012-12-31 | $179,877,818 |
| Total loss/gain on sale of assets | 2012-12-31 | $13,999,074 |
| Total of all expenses incurred | 2012-12-31 | $12,498,233 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2012-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2012-12-31 | $0 |
| Value of total assets at end of year | 2012-12-31 | $2,202,779,132 |
| Value of total assets at beginning of year | 2012-12-31 | $2,273,541,212 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $12,498,233 |
| Total interest from all sources | 2012-12-31 | $7,499,364 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $6,121,917 |
| Were there any nonexempt tranactions with any party-in-interest | 2012-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2012-12-31 | $32,262,794 |
| Assets. Other investments not covered elsewhere at beginning of year | 2012-12-31 | $19,826,995 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2012-12-31 | $41,420,688 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2012-12-31 | $95,651,787 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2012-12-31 | $53,156,188 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2012-12-31 | $103,083,281 |
| Other income not declared elsewhere | 2012-12-31 | $1,431,232 |
| Administrative expenses (other) incurred | 2012-12-31 | $232,081 |
| Value of net income/loss | 2012-12-31 | $167,379,585 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $2,149,622,944 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $2,170,457,931 |
| 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 | $241,453,752 |
| Assets. partnership/joint venture interests at beginning of year | 2012-12-31 | $198,364,910 |
| Investment advisory and management fees | 2012-12-31 | $12,266,152 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2012-12-31 | $0 |
| Interest earned on other investments | 2012-12-31 | $324,185 |
| Income. Interest from US Government securities | 2012-12-31 | $1,017,037 |
| Income. Interest from corporate debt instruments | 2012-12-31 | $6,255,025 |
| Value of interest in common/collective trusts at end of year | 2012-12-31 | $1,426,425,985 |
| Value of interest in common/collective trusts at beginning of year | 2012-12-31 | $1,463,540,537 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $-96,883 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2012-12-31 | $1,475,216 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2012-12-31 | $2,101,657 |
| Asset value of US Government securities at end of year | 2012-12-31 | $30,036,995 |
| Asset value of US Government securities at beginning of year | 2012-12-31 | $42,113,138 |
| Net investment gain or loss from common/collective trusts | 2012-12-31 | $162,993,164 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2012-12-31 | Yes |
| Assets. Invements in employer securities at end of year | 2012-12-31 | $89,697,891 |
| Assets. Invements in employer securities at beginning of year | 2012-12-31 | $141,223,953 |
| Income. Dividends from common stock | 2012-12-31 | $6,121,917 |
| Asset. Corporate debt instrument debt (other) at end of year | 2012-12-31 | $150,601,434 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2012-12-31 | $149,420,034 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2012-12-31 | $189,404,377 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2012-12-31 | $161,298,201 |
| Did the plan have assets held for investment | 2012-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2012-12-31 | $391,713,418 |
| Aggregate carrying amount (costs) on sale of assets | 2012-12-31 | $377,714,344 |
| 2011 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2011-12-31 | $-38,990,195 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $-38,990,195 |
| Total transfer of assets to this plan | 2011-12-31 | $158,104,046 |
| Total transfer of assets from this plan | 2011-12-31 | $173,265,061 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $103,083,281 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $11,608,512 |
| Total income from all sources (including contributions) | 2011-12-31 | $22,113,074 |
| Total loss/gain on sale of assets | 2011-12-31 | $16,565,934 |
| Total of all expenses incurred | 2011-12-31 | $10,686,811 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2011-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2011-12-31 | $0 |
| Value of total assets at end of year | 2011-12-31 | $2,273,541,212 |
| Value of total assets at beginning of year | 2011-12-31 | $2,185,801,195 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $10,686,811 |
| Total interest from all sources | 2011-12-31 | $6,434,339 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $5,323,153 |
| Were there any nonexempt tranactions with any party-in-interest | 2011-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2011-12-31 | $19,826,995 |
| Assets. Other investments not covered elsewhere at beginning of year | 2011-12-31 | $4,043,845 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2011-12-31 | $95,651,787 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2011-12-31 | $11,395,457 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2011-12-31 | $103,083,281 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2011-12-31 | $11,608,512 |
| Other income not declared elsewhere | 2011-12-31 | $132,079 |
| Administrative expenses (other) incurred | 2011-12-31 | $187,767 |
| Value of net income/loss | 2011-12-31 | $11,426,263 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $2,170,457,931 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $2,174,192,683 |
| 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 | $198,364,910 |
| Assets. partnership/joint venture interests at beginning of year | 2011-12-31 | $198,941,186 |
| Investment advisory and management fees | 2011-12-31 | $10,499,044 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2011-12-31 | $0 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2011-12-31 | $83,572,834 |
| Interest earned on other investments | 2011-12-31 | $-159,800 |
| Income. Interest from US Government securities | 2011-12-31 | $378,372 |
| Income. Interest from corporate debt instruments | 2011-12-31 | $6,120,484 |
| Value of interest in common/collective trusts at end of year | 2011-12-31 | $1,463,540,537 |
| Value of interest in common/collective trusts at beginning of year | 2011-12-31 | $1,429,621,327 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $95,283 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2011-12-31 | $2,101,657 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2011-12-31 | $2,744,919 |
| Asset value of US Government securities at end of year | 2011-12-31 | $42,113,138 |
| Asset value of US Government securities at beginning of year | 2011-12-31 | $265,742 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2011-12-31 | $-13,616,794 |
| Net investment gain or loss from common/collective trusts | 2011-12-31 | $46,264,558 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2011-12-31 | Yes |
| Assets. Invements in employer securities at end of year | 2011-12-31 | $141,223,953 |
| Assets. Invements in employer securities at beginning of year | 2011-12-31 | $154,510,898 |
| Income. Dividends from common stock | 2011-12-31 | $5,323,153 |
| Asset. Corporate debt instrument debt (other) at end of year | 2011-12-31 | $149,420,034 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2011-12-31 | $120,531,146 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2011-12-31 | $161,298,201 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2011-12-31 | $180,173,841 |
| Did the plan have assets held for investment | 2011-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2011-12-31 | $531,119,268 |
| Aggregate carrying amount (costs) on sale of assets | 2011-12-31 | $514,553,334 |
| 2010 : ALLEGHENY TECHNOLOGIES INCORPORATED MASTER PENSION TRUST 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2010-12-31 | $56,067,672 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $56,067,672 |
| Total transfer of assets to this plan | 2010-12-31 | $723,739 |
| Total transfer of assets from this plan | 2010-12-31 | $173,980,875 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $11,608,512 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $2,758,920 |
| Total income from all sources (including contributions) | 2010-12-31 | $248,898,681 |
| Total loss/gain on sale of assets | 2010-12-31 | $11,057,282 |
| Total of all expenses incurred | 2010-12-31 | $10,113,471 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2010-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2010-12-31 | $0 |
| Value of total assets at end of year | 2010-12-31 | $2,185,801,195 |
| Value of total assets at beginning of year | 2010-12-31 | $2,111,423,529 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $10,113,471 |
| Total interest from all sources | 2010-12-31 | $5,435,109 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $4,399,383 |
| Were there any nonexempt tranactions with any party-in-interest | 2010-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2010-12-31 | $3,152,913 |
| Assets. Other investments not covered elsewhere at beginning of year | 2010-12-31 | $6,693,374 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2010-12-31 | $12,286,389 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2010-12-31 | $2,649,003 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2010-12-31 | $11,608,512 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2010-12-31 | $2,758,920 |
| Other income not declared elsewhere | 2010-12-31 | $359,688 |
| Administrative expenses (other) incurred | 2010-12-31 | $223,875 |
| Value of net income/loss | 2010-12-31 | $238,785,210 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $2,174,192,683 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $2,108,664,609 |
| 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 | $198,941,186 |
| Assets. partnership/joint venture interests at beginning of year | 2010-12-31 | $192,599,563 |
| Investment advisory and management fees | 2010-12-31 | $9,889,596 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2010-12-31 | $83,572,834 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2010-12-31 | $75,280,543 |
| Interest earned on other investments | 2010-12-31 | $664,160 |
| Income. Interest from US Government securities | 2010-12-31 | $83,409 |
| Income. Interest from corporate debt instruments | 2010-12-31 | $4,655,438 |
| Value of interest in common/collective trusts at end of year | 2010-12-31 | $1,429,621,327 |
| Value of interest in common/collective trusts at beginning of year | 2010-12-31 | $1,597,911,297 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2010-12-31 | $32,102 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2010-12-31 | $2,744,919 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2010-12-31 | $3,437,437 |
| Asset value of US Government securities at end of year | 2010-12-31 | $265,742 |
| Asset value of US Government securities at beginning of year | 2010-12-31 | $14,429,073 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2010-12-31 | $8,292,291 |
| Net investment gain or loss from common/collective trusts | 2010-12-31 | $163,287,256 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2010-12-31 | Yes |
| Assets. Invements in employer securities at end of year | 2010-12-31 | $334,684,739 |
| Assets. Invements in employer securities at beginning of year | 2010-12-31 | $125,361,596 |
| Income. Dividends from common stock | 2010-12-31 | $4,399,383 |
| Asset. Corporate debt instrument preferred debt at end of year | 2010-12-31 | $70,006,178 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2010-12-31 | $68,893,695 |
| Asset. Corporate debt instrument debt (other) at end of year | 2010-12-31 | $50,524,968 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2010-12-31 | $24,167,948 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2010-12-31 | $180,173,841 |
| Did the plan have assets held for investment | 2010-12-31 | Yes |
| Aggregate proceeds on sale of assets | 2010-12-31 | $413,441,099 |
| Aggregate carrying amount (costs) on sale of assets | 2010-12-31 | $402,383,817 |
