STATE STREET GLOBAL ADVISORS TRUST COMPANY has sponsored the creation of one or more 401k plans.
Submission information for form 5500 for 401k plan STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A
401k plan membership statisitcs for STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A
| Measure | Date | Value |
|---|
| 2023 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2023 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2023-12-31 | $18,401,475 |
| Total unrealized appreciation/depreciation of assets | 2023-12-31 | $18,401,475 |
| Total transfer of assets to this plan | 2023-12-31 | $32,333,781 |
| Total transfer of assets from this plan | 2023-12-31 | $38,748,492 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $17,226,281 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2023-12-31 | $26,659,646 |
| Total income from all sources (including contributions) | 2023-12-31 | $25,501,592 |
| Total loss/gain on sale of assets | 2023-12-31 | $-5,679,595 |
| Total of all expenses incurred | 2023-12-31 | $59,792 |
| 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 | $515,042,518 |
| Value of total assets at beginning of year | 2023-12-31 | $505,448,794 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2023-12-31 | $59,792 |
| Total interest from all sources | 2023-12-31 | $12,779,712 |
| Total dividends received (eg from common stock, registered investment company shares) | 2023-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2023-12-31 | $11,155,883 |
| Assets. Other investments not covered elsewhere at beginning of year | 2023-12-31 | $12,446,648 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2023-12-31 | $5,745,878 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2023-12-31 | $3,286,704 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2023-12-31 | $17,226,281 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2023-12-31 | $26,659,646 |
| Administrative expenses (other) incurred | 2023-12-31 | $-2,293 |
| Total non interest bearing cash at end of year | 2023-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2023-12-31 | $1,055 |
| Value of net income/loss | 2023-12-31 | $25,441,800 |
| Value of net assets at end of year (total assets less liabilities) | 2023-12-31 | $497,816,237 |
| Value of net assets at beginning of year (total assets less liabilities) | 2023-12-31 | $478,789,148 |
| Interest earned on other investments | 2023-12-31 | $287,740 |
| Income. Interest from US Government securities | 2023-12-31 | $6,718,746 |
| Income. Interest from corporate debt instruments | 2023-12-31 | $5,633,561 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2023-12-31 | $19,941,356 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2023-12-31 | $30,274,185 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2023-12-31 | $30,274,185 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2023-12-31 | $139,665 |
| Asset value of US Government securities at end of year | 2023-12-31 | $305,287,903 |
| Asset value of US Government securities at beginning of year | 2023-12-31 | $295,977,498 |
| Asset. Corporate debt instrument preferred debt at end of year | 2023-12-31 | $103,424,244 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2023-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2023-12-31 | $69,487,254 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2023-12-31 | $163,462,704 |
| Contract administrator fees | 2023-12-31 | $49,256 |
| Aggregate proceeds on sale of assets | 2023-12-31 | $134,238,625 |
| Aggregate carrying amount (costs) on sale of assets | 2023-12-31 | $139,918,220 |
| 2022 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2022 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-12-31 | $-43,866,161 |
| Total unrealized appreciation/depreciation of assets | 2022-12-31 | $-43,866,161 |
| Total transfer of assets to this plan | 2022-12-31 | $45,599,515 |
| Total transfer of assets from this plan | 2022-12-31 | $65,537,569 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $26,659,646 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $1,692,287 |
| Total income from all sources (including contributions) | 2022-12-31 | $-45,033,402 |
| Total loss/gain on sale of assets | 2022-12-31 | $-9,014,274 |
| Total of all expenses incurred | 2022-12-31 | $55,105 |
| 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 | $505,448,794 |
| Value of total assets at beginning of year | 2022-12-31 | $545,507,996 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-12-31 | $55,105 |
| Total interest from all sources | 2022-12-31 | $7,847,033 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-12-31 | $0 |
| Administrative expenses professional fees incurred | 2022-12-31 | $9,506 |
| Assets. Other investments not covered elsewhere at end of year | 2022-12-31 | $12,446,648 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-12-31 | $16,944,576 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-12-31 | $3,286,704 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-12-31 | $2,887,309 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-12-31 | $26,659,646 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-12-31 | $1,692,287 |
| Administrative expenses (other) incurred | 2022-12-31 | $45,541 |
| Total non interest bearing cash at end of year | 2022-12-31 | $1,055 |
| Total non interest bearing cash at beginning of year | 2022-12-31 | $0 |
| Value of net income/loss | 2022-12-31 | $-45,088,507 |
| Value of net assets at end of year (total assets less liabilities) | 2022-12-31 | $478,789,148 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-12-31 | $543,815,709 |
| Investment advisory and management fees | 2022-12-31 | $58 |
| Interest earned on other investments | 2022-12-31 | $289,740 |
| Income. Interest from US Government securities | 2022-12-31 | $3,493,634 |
| Income. Interest from corporate debt instruments | 2022-12-31 | $3,997,192 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2022-12-31 | $30,274,185 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2022-12-31 | $1,830,181 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2022-12-31 | $1,830,181 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-12-31 | $66,467 |
| Asset value of US Government securities at end of year | 2022-12-31 | $295,977,498 |
| Asset value of US Government securities at beginning of year | 2022-12-31 | $321,847,031 |
| Asset. Corporate debt instrument preferred debt at end of year | 2022-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2022-12-31 | $108,504,443 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-12-31 | $163,462,704 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-12-31 | $93,494,456 |
| Aggregate proceeds on sale of assets | 2022-12-31 | $135,797,176 |
| Aggregate carrying amount (costs) on sale of assets | 2022-12-31 | $144,811,450 |
| 2021 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2021 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2021-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2021-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2021-12-31 | $0 |
| Total transfer of assets to this plan | 2021-12-31 | $26,352,936 |
| Total transfer of assets from this plan | 2021-12-31 | $61,544,676 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $1,692,287 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $5,799,201 |
| 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 | $-8,200,445 |
| Total loss/gain on sale of assets | 2021-12-31 | $-2,684,748 |
| Total of all expenses incurred | 2021-12-31 | $67,750 |
| 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 | $545,507,996 |
| Value of total assets at beginning of year | 2021-12-31 | $593,074,845 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-12-31 | $67,750 |
| Total interest from all sources | 2021-12-31 | $7,124,723 |
| Total dividends received (eg from common stock, registered investment company shares) | 2021-12-31 | $0 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2021-12-31 | $0 |
| Assets. Real estate other than employer real property at end of year | 2021-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2021-12-31 | $0 |
| Administrative expenses professional fees incurred | 2021-12-31 | $17,900 |
| 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 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2021-12-31 | $16,944,576 |
| Assets. Other investments not covered elsewhere at beginning of year | 2021-12-31 | $14,652,566 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2021-12-31 | $2,887,309 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2021-12-31 | $3,411,644 |
| Assets. Loans (other than to participants) at end of year | 2021-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2021-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2021-12-31 | $1,692,287 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2021-12-31 | $5,799,201 |
| Other income not declared elsewhere | 2021-12-31 | $0 |
| Administrative expenses (other) incurred | 2021-12-31 | $49,850 |
| Total non interest bearing cash at end of year | 2021-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2021-12-31 | $0 |
| Value of net income/loss | 2021-12-31 | $-8,268,195 |
| Value of net assets at end of year (total assets less liabilities) | 2021-12-31 | $543,815,709 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-12-31 | $587,275,644 |
| Investment advisory and management fees | 2021-12-31 | $0 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2021-12-31 | $0 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2021-12-31 | $0 |
| Income. Interest from loans (other than to participants) | 2021-12-31 | $0 |
| Interest earned on other investments | 2021-12-31 | $219,457 |
| Income. Interest from US Government securities | 2021-12-31 | $2,579,241 |
| Income. Interest from corporate debt instruments | 2021-12-31 | $4,322,280 |
| Value of interest in common/collective trusts at end of year | 2021-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2021-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2021-12-31 | $1,830,181 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2021-12-31 | $4,278,941 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2021-12-31 | $4,278,941 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2021-12-31 | $3,745 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2021-12-31 | $0 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2021-12-31 | $0 |
| Asset value of US Government securities at end of year | 2021-12-31 | $321,847,031 |
| Asset value of US Government securities at beginning of year | 2021-12-31 | $335,422,202 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2021-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2021-12-31 | $-12,640,420 |
| Income. Dividends from preferred stock | 2021-12-31 | $0 |
| Income. Dividends from common stock | 2021-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at end of year | 2021-12-31 | $108,504,443 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2021-12-31 | $126,306,084 |
| Asset. Corporate debt instrument debt (other) at end of year | 2021-12-31 | $93,494,456 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2021-12-31 | $109,003,408 |
| Contract administrator fees | 2021-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at end of year | 2021-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2021-12-31 | $0 |
| Aggregate proceeds on sale of assets | 2021-12-31 | $228,122,622 |
| Aggregate carrying amount (costs) on sale of assets | 2021-12-31 | $230,807,370 |
| 2020 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2020 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2020-12-31 | $5,695,242 |
| Total unrealized appreciation/depreciation of assets | 2020-12-31 | $5,695,242 |
| Total transfer of assets to this plan | 2020-12-31 | $687,101,409 |
| Total transfer of assets from this plan | 2020-12-31 | $270,036,165 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $5,799,201 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $1,409,033 |
| Total income from all sources (including contributions) | 2020-12-31 | $13,240,845 |
| Total loss/gain on sale of assets | 2020-12-31 | $2,536,239 |
| Total of all expenses incurred | 2020-12-31 | $37,594 |
| 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 | $593,074,845 |
| Value of total assets at beginning of year | 2020-12-31 | $158,416,182 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $37,594 |
| Total interest from all sources | 2020-12-31 | $5,009,364 |
| Total dividends received (eg from common stock, registered investment company shares) | 2020-12-31 | $0 |
| Administrative expenses professional fees incurred | 2020-12-31 | $14,208 |
| Assets. Other investments not covered elsewhere at end of year | 2020-12-31 | $14,652,566 |
| Assets. Other investments not covered elsewhere at beginning of year | 2020-12-31 | $3,506,116 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $3,411,644 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $1,690,188 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $5,799,201 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $1,409,033 |
| Administrative expenses (other) incurred | 2020-12-31 | $23,386 |
| Total non interest bearing cash at end of year | 2020-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2020-12-31 | $196 |
| Value of net income/loss | 2020-12-31 | $13,203,251 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $587,275,644 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $157,007,149 |
| Interest earned on other investments | 2020-12-31 | $142,231 |
| Income. Interest from US Government securities | 2020-12-31 | $2,224,051 |
| Income. Interest from corporate debt instruments | 2020-12-31 | $2,628,327 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2020-12-31 | $4,278,941 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2020-12-31 | $1,290,432 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2020-12-31 | $1,290,432 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $14,755 |
| Asset value of US Government securities at end of year | 2020-12-31 | $335,422,202 |
| Asset value of US Government securities at beginning of year | 2020-12-31 | $97,913,940 |
| Asset. Corporate debt instrument preferred debt at end of year | 2020-12-31 | $126,306,084 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2020-12-31 | $29,532,647 |
| Asset. Corporate debt instrument debt (other) at end of year | 2020-12-31 | $109,003,408 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2020-12-31 | $24,482,663 |
| Aggregate proceeds on sale of assets | 2020-12-31 | $257,872,096 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $255,335,857 |
| 2019 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2019 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $517,322 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $517,322 |
| Total transfer of assets to this plan | 2019-12-31 | $156,387,354 |
| Total transfer of assets from this plan | 2019-12-31 | $17,933,512 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $1,409,033 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $149,134 |
| Total income from all sources (including contributions) | 2019-12-31 | $2,113,310 |
| Total loss/gain on sale of assets | 2019-12-31 | $445,638 |
| Total of all expenses incurred | 2019-12-31 | $5,500 |
| 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 | $158,416,182 |
| Value of total assets at beginning of year | 2019-12-31 | $16,594,631 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $5,500 |
| Total interest from all sources | 2019-12-31 | $1,150,350 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $0 |
| Administrative expenses professional fees incurred | 2019-12-31 | $1,700 |
| Assets. Other investments not covered elsewhere at end of year | 2019-12-31 | $3,506,116 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $364,959 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $1,690,188 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $298,552 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $1,409,033 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $149,134 |
| Administrative expenses (other) incurred | 2019-12-31 | $3,800 |
| Total non interest bearing cash at end of year | 2019-12-31 | $196 |
| Total non interest bearing cash at beginning of year | 2019-12-31 | $0 |
| Value of net income/loss | 2019-12-31 | $2,107,810 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $157,007,149 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $16,445,497 |
| Interest earned on other investments | 2019-12-31 | $28,596 |
| Income. Interest from US Government securities | 2019-12-31 | $603,566 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $512,961 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $1,290,432 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $87,916 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $87,916 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $5,227 |
| Asset value of US Government securities at end of year | 2019-12-31 | $97,913,940 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $10,100,017 |
| Asset. Corporate debt instrument preferred debt at end of year | 2019-12-31 | $29,532,647 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2019-12-31 | $3,210,108 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $24,482,663 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $2,533,079 |
| Aggregate proceeds on sale of assets | 2019-12-31 | $22,645,701 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $22,200,063 |
| 2018 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $43,441 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $43,441 |
| Total transfer of assets to this plan | 2018-12-31 | $7,532,431 |
| Total transfer of assets from this plan | 2018-12-31 | $3,145,984 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $149,134 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $137,768 |
| Total income from all sources (including contributions) | 2018-12-31 | $238,835 |
| Total loss/gain on sale of assets | 2018-12-31 | $-176,722 |
| Total of all expenses incurred | 2018-12-31 | $1,742 |
| 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 | $16,594,631 |
| Value of total assets at beginning of year | 2018-12-31 | $11,959,725 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $1,742 |
| Total interest from all sources | 2018-12-31 | $372,116 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $0 |
| Administrative expenses professional fees incurred | 2018-12-31 | $504 |
| Assets. Other investments not covered elsewhere at end of year | 2018-12-31 | $364,959 |
| Assets. Other investments not covered elsewhere at beginning of year | 2018-12-31 | $303,218 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $298,552 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $128,953 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $149,134 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $137,768 |
| Administrative expenses (other) incurred | 2018-12-31 | $1,238 |
| Value of net income/loss | 2018-12-31 | $237,093 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $16,445,497 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $11,821,957 |
| Interest earned on other investments | 2018-12-31 | $10,350 |
| Income. Interest from US Government securities | 2018-12-31 | $184,328 |
| Income. Interest from corporate debt instruments | 2018-12-31 | $176,604 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2018-12-31 | $87,916 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2018-12-31 | $80,119 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2018-12-31 | $80,119 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $834 |
| Asset value of US Government securities at end of year | 2018-12-31 | $10,100,017 |
| Asset value of US Government securities at beginning of year | 2018-12-31 | $7,072,068 |
| Asset. Corporate debt instrument preferred debt at end of year | 2018-12-31 | $3,210,108 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2018-12-31 | $2,403,396 |
| Asset. Corporate debt instrument debt (other) at end of year | 2018-12-31 | $2,533,079 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2018-12-31 | $1,971,971 |
| Aggregate proceeds on sale of assets | 2018-12-31 | $9,410,976 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $9,587,698 |
| 2017 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2017-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-12-31 | $-36,750 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $-36,750 |
| Total transfer of assets to this plan | 2017-12-31 | $2,839,379 |
| Total transfer of assets from this plan | 2017-12-31 | $2,748,537 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $137,768 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $175,877 |
| Expenses. Interest paid | 2017-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2017-12-31 | $0 |
| Total income from all sources (including contributions) | 2017-12-31 | $252,255 |
| Total loss/gain on sale of assets | 2017-12-31 | $10,619 |
| Total of all expenses incurred | 2017-12-31 | $1,398 |
| 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 | $11,959,725 |
| Value of total assets at beginning of year | 2017-12-31 | $11,656,135 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $1,398 |
| Total interest from all sources | 2017-12-31 | $278,386 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $0 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2017-12-31 | $0 |
| Administrative expenses professional fees incurred | 2017-12-31 | $447 |
| Assets. Other investments not covered elsewhere at end of year | 2017-12-31 | $303,218 |
| Assets. Other investments not covered elsewhere at beginning of year | 2017-12-31 | $247,882 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $128,953 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $127,642 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $137,768 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $175,877 |
| Other income not declared elsewhere | 2017-12-31 | $0 |
| Administrative expenses (other) incurred | 2017-12-31 | $951 |
| Total non interest bearing cash at end of year | 2017-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2017-12-31 | $63 |
| Value of net income/loss | 2017-12-31 | $250,857 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $11,821,957 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $11,480,258 |
| Investment advisory and management fees | 2017-12-31 | $0 |
| Income. Interest from loans (other than to participants) | 2017-12-31 | $0 |
| Interest earned on other investments | 2017-12-31 | $8,179 |
| Income. Interest from US Government securities | 2017-12-31 | $127,177 |
| Income. Interest from corporate debt instruments | 2017-12-31 | $142,698 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-12-31 | $80,119 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-12-31 | $15,658 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-12-31 | $15,658 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $332 |
| Asset value of US Government securities at end of year | 2017-12-31 | $7,072,068 |
| Asset value of US Government securities at beginning of year | 2017-12-31 | $6,721,132 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2017-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2017-12-31 | $0 |
| Income. Dividends from preferred stock | 2017-12-31 | $0 |
| Income. Dividends from common stock | 2017-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at end of year | 2017-12-31 | $2,403,396 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2017-12-31 | $2,561,772 |
| Asset. Corporate debt instrument debt (other) at end of year | 2017-12-31 | $1,971,971 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2017-12-31 | $1,981,986 |
| Contract administrator fees | 2017-12-31 | $0 |
| Aggregate proceeds on sale of assets | 2017-12-31 | $3,429,139 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $3,418,520 |
| 2016 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $-49,903 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $-49,903 |
| Total transfer of assets to this plan | 2016-12-31 | $4,209,964 |
| Total transfer of assets from this plan | 2016-12-31 | $3,504,338 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $175,877 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $114,285 |
| Total income from all sources (including contributions) | 2016-12-31 | $228,204 |
| Total loss/gain on sale of assets | 2016-12-31 | $3,299 |
| Total of all expenses incurred | 2016-12-31 | $1,382 |
| 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 | $11,656,135 |
| Value of total assets at beginning of year | 2016-12-31 | $10,662,095 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $1,382 |
| Total interest from all sources | 2016-12-31 | $274,808 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $0 |
| Administrative expenses professional fees incurred | 2016-12-31 | $679 |
| Assets. Other investments not covered elsewhere at end of year | 2016-12-31 | $247,882 |
| Assets. Other investments not covered elsewhere at beginning of year | 2016-12-31 | $255,561 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $127,642 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $202,627 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $175,877 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $114,285 |
| Administrative expenses (other) incurred | 2016-12-31 | $703 |
| Total non interest bearing cash at end of year | 2016-12-31 | $63 |
| Total non interest bearing cash at beginning of year | 2016-12-31 | $0 |
| Value of net income/loss | 2016-12-31 | $226,822 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $11,480,258 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $10,547,810 |
| Interest earned on other investments | 2016-12-31 | $8,154 |
| Income. Interest from US Government securities | 2016-12-31 | $122,440 |
| Income. Interest from corporate debt instruments | 2016-12-31 | $143,895 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $15,658 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $142,094 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $142,094 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $319 |
| Asset value of US Government securities at end of year | 2016-12-31 | $6,721,132 |
| Asset value of US Government securities at beginning of year | 2016-12-31 | $6,436,612 |
| Asset. Corporate debt instrument preferred debt at end of year | 2016-12-31 | $2,561,772 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2016-12-31 | $2,076,335 |
| Asset. Corporate debt instrument debt (other) at end of year | 2016-12-31 | $1,981,986 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2016-12-31 | $1,548,866 |
| Aggregate proceeds on sale of assets | 2016-12-31 | $3,300,271 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $3,296,972 |
| 2015 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2015-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $-1,025,163 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-1,025,163 |
| Total transfer of assets to this plan | 2015-12-31 | $25,858,640 |
| Total transfer of assets from this plan | 2015-12-31 | $205,727,449 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $114,285 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $2,383,668 |
| Expenses. Interest paid | 2015-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2015-12-31 | $0 |
| Total income from all sources (including contributions) | 2015-12-31 | $902,967 |
| Total loss/gain on sale of assets | 2015-12-31 | $-444,615 |
| Total of all expenses incurred | 2015-12-31 | $19,222 |
| 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 | $10,662,095 |
| Value of total assets at beginning of year | 2015-12-31 | $191,916,542 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $19,222 |
| Total interest from all sources | 2015-12-31 | $2,372,745 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $0 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2015-12-31 | $0 |
| Administrative expenses professional fees incurred | 2015-12-31 | $4,474 |
| Assets. Other investments not covered elsewhere at end of year | 2015-12-31 | $255,561 |
| Assets. Other investments not covered elsewhere at beginning of year | 2015-12-31 | $5,000,661 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $202,627 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $2,560,162 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $114,285 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2015-12-31 | $2,383,668 |
| Other income not declared elsewhere | 2015-12-31 | $0 |
| Administrative expenses (other) incurred | 2015-12-31 | $14,748 |
| Total non interest bearing cash at end of year | 2015-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2015-12-31 | $1 |
| Value of net income/loss | 2015-12-31 | $883,745 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $10,547,810 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $189,532,874 |
| Investment advisory and management fees | 2015-12-31 | $0 |
| Interest earned on other investments | 2015-12-31 | $87,354 |
| Income. Interest from US Government securities | 2015-12-31 | $1,077,407 |
| Income. Interest from corporate debt instruments | 2015-12-31 | $1,207,454 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $142,094 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $1,549,602 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $1,549,602 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2015-12-31 | $530 |
| Asset value of US Government securities at end of year | 2015-12-31 | $6,436,612 |
| Asset value of US Government securities at beginning of year | 2015-12-31 | $117,323,040 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2015-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2015-12-31 | $0 |
| Income. Dividends from preferred stock | 2015-12-31 | $0 |
| Income. Dividends from common stock | 2015-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at end of year | 2015-12-31 | $2,076,335 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2015-12-31 | $42,087,758 |
| Asset. Corporate debt instrument debt (other) at end of year | 2015-12-31 | $1,548,866 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2015-12-31 | $23,395,318 |
| Contract administrator fees | 2015-12-31 | $0 |
| Aggregate proceeds on sale of assets | 2015-12-31 | $52,794,022 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $53,238,637 |
| 2014 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $1,622,482 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $1,622,482 |
| Total transfer of assets to this plan | 2014-12-31 | $50,534,230 |
| Total transfer of assets from this plan | 2014-12-31 | $147,446,505 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $2,383,668 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $4,216,142 |
| Total income from all sources (including contributions) | 2014-12-31 | $6,771,936 |
| Total loss/gain on sale of assets | 2014-12-31 | $19,567 |
| Total of all expenses incurred | 2014-12-31 | $35,553 |
| 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 | $191,916,542 |
| Value of total assets at beginning of year | 2014-12-31 | $283,924,908 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $35,553 |
| Total interest from all sources | 2014-12-31 | $5,129,887 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $0 |
| Administrative expenses professional fees incurred | 2014-12-31 | $9,494 |
| Assets. Other investments not covered elsewhere at end of year | 2014-12-31 | $5,000,661 |
| Assets. Other investments not covered elsewhere at beginning of year | 2014-12-31 | $6,771,606 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $2,560,162 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $2,528,317 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2014-12-31 | $2,383,668 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2014-12-31 | $4,216,142 |
| Administrative expenses (other) incurred | 2014-12-31 | $26,059 |
| Total non interest bearing cash at end of year | 2014-12-31 | $1 |
| Total non interest bearing cash at beginning of year | 2014-12-31 | $556 |
| Value of net income/loss | 2014-12-31 | $6,736,383 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $189,532,874 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $279,708,766 |
| Interest earned on other investments | 2014-12-31 | $190,366 |
| Income. Interest from US Government securities | 2014-12-31 | $2,277,031 |
| Income. Interest from corporate debt instruments | 2014-12-31 | $2,660,965 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $1,549,602 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $1,903,643 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $1,903,643 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $1,525 |
| Asset value of US Government securities at end of year | 2014-12-31 | $117,323,040 |
| Asset value of US Government securities at beginning of year | 2014-12-31 | $175,667,316 |
| Asset. Corporate debt instrument preferred debt at end of year | 2014-12-31 | $42,087,758 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2014-12-31 | $65,318,969 |
| Asset. Corporate debt instrument debt (other) at end of year | 2014-12-31 | $23,395,318 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2014-12-31 | $31,734,501 |
| Aggregate proceeds on sale of assets | 2014-12-31 | $89,101,358 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $89,081,791 |
| 2013 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $-9,386,557 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $-9,386,557 |
| Total transfer of assets to this plan | 2013-12-31 | $163,342,334 |
| Total transfer of assets from this plan | 2013-12-31 | $242,230,689 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $4,216,142 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $7,725,706 |
| Total income from all sources (including contributions) | 2013-12-31 | $-2,928,880 |
| Total loss/gain on sale of assets | 2013-12-31 | $-801,123 |
| Total of all expenses incurred | 2013-12-31 | $63,913 |
| 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 | $283,924,908 |
| Value of total assets at beginning of year | 2013-12-31 | $369,315,620 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $63,913 |
| Total interest from all sources | 2013-12-31 | $7,258,800 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $0 |
| Administrative expenses professional fees incurred | 2013-12-31 | $12,746 |
| Assets. Other investments not covered elsewhere at end of year | 2013-12-31 | $6,771,606 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $7,913,772 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $2,528,317 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $3,895,238 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2013-12-31 | $4,216,142 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $7,725,706 |
| Administrative expenses (other) incurred | 2013-12-31 | $51,167 |
| Total non interest bearing cash at end of year | 2013-12-31 | $556 |
| Total non interest bearing cash at beginning of year | 2013-12-31 | $0 |
| Value of net income/loss | 2013-12-31 | $-2,992,793 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $279,708,766 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $361,589,914 |
| Interest earned on other investments | 2013-12-31 | $236,232 |
| Income. Interest from US Government securities | 2013-12-31 | $3,199,555 |
| Income. Interest from corporate debt instruments | 2013-12-31 | $3,820,877 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $1,903,643 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $6,944,718 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $6,944,718 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $2,136 |
| Asset value of US Government securities at end of year | 2013-12-31 | $175,667,316 |
| Asset value of US Government securities at beginning of year | 2013-12-31 | $236,753,132 |
| Asset. Corporate debt instrument preferred debt at end of year | 2013-12-31 | $65,318,969 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2013-12-31 | $78,248,491 |
| Asset. Corporate debt instrument debt (other) at end of year | 2013-12-31 | $31,734,501 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2013-12-31 | $35,560,269 |
| Aggregate proceeds on sale of assets | 2013-12-31 | $103,784,798 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $104,585,921 |
| 2012 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2012 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2012-12-31 | $4,873,777 |
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $4,873,777 |
| Total transfer of assets to this plan | 2012-12-31 | $184,891,728 |
| Total transfer of assets from this plan | 2012-12-31 | $96,480,813 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $7,725,706 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $506,780 |
| Total income from all sources (including contributions) | 2012-12-31 | $13,025,351 |
| Total loss/gain on sale of assets | 2012-12-31 | $-89,432 |
| Total of all expenses incurred | 2012-12-31 | $66,869 |
| 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 | $369,315,620 |
| Value of total assets at beginning of year | 2012-12-31 | $260,727,297 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $66,869 |
| Total interest from all sources | 2012-12-31 | $8,241,006 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $0 |
| Administrative expenses professional fees incurred | 2012-12-31 | $15,914 |
| Assets. Other investments not covered elsewhere at end of year | 2012-12-31 | $7,913,772 |
| Assets. Other investments not covered elsewhere at beginning of year | 2012-12-31 | $7,063,705 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2012-12-31 | $3,895,238 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2012-12-31 | $2,485,058 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2012-12-31 | $7,725,706 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2012-12-31 | $506,780 |
| Administrative expenses (other) incurred | 2012-12-31 | $50,955 |
| Total non interest bearing cash at end of year | 2012-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2012-12-31 | $952 |
| Value of net income/loss | 2012-12-31 | $12,958,482 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $361,589,914 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $260,220,517 |
| Interest earned on other investments | 2012-12-31 | $262,201 |
| Income. Interest from US Government securities | 2012-12-31 | $3,709,344 |
| Income. Interest from corporate debt instruments | 2012-12-31 | $4,261,046 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $6,944,718 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $3,532,539 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $3,532,539 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $8,415 |
| Asset value of US Government securities at end of year | 2012-12-31 | $236,753,132 |
| Asset value of US Government securities at beginning of year | 2012-12-31 | $167,353,364 |
| Asset. Corporate debt instrument preferred debt at end of year | 2012-12-31 | $78,248,491 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2012-12-31 | $55,051,032 |
| Asset. Corporate debt instrument debt (other) at end of year | 2012-12-31 | $35,560,269 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2012-12-31 | $25,240,647 |
| Aggregate proceeds on sale of assets | 2012-12-31 | $86,500,171 |
| Aggregate carrying amount (costs) on sale of assets | 2012-12-31 | $86,589,603 |
| 2011 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2011-12-31 | $7,122,100 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $7,122,100 |
| Total transfer of assets to this plan | 2011-12-31 | $109,679,128 |
| Total transfer of assets from this plan | 2011-12-31 | $149,556,177 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $506,780 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $5,020,163 |
| Total income from all sources (including contributions) | 2011-12-31 | $14,465,354 |
| Total loss/gain on sale of assets | 2011-12-31 | $-218,488 |
| Total of all expenses incurred | 2011-12-31 | $52,144 |
| 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 | $260,727,297 |
| Value of total assets at beginning of year | 2011-12-31 | $290,704,519 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $52,144 |
| Total interest from all sources | 2011-12-31 | $7,561,742 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $0 |
| Administrative expenses professional fees incurred | 2011-12-31 | $13,722 |
| Assets. Other investments not covered elsewhere at end of year | 2011-12-31 | $7,063,705 |
| Assets. Other investments not covered elsewhere at beginning of year | 2011-12-31 | $7,510,443 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2011-12-31 | $2,485,058 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2011-12-31 | $2,453,574 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2011-12-31 | $506,780 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2011-12-31 | $5,020,163 |
| Administrative expenses (other) incurred | 2011-12-31 | $38,422 |
| Total non interest bearing cash at end of year | 2011-12-31 | $952 |
| Value of net income/loss | 2011-12-31 | $14,413,210 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $260,220,517 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $285,684,356 |
| Interest earned on other investments | 2011-12-31 | $268,783 |
| Income. Interest from US Government securities | 2011-12-31 | $3,461,459 |
| Income. Interest from corporate debt instruments | 2011-12-31 | $3,825,766 |
| Value of interest in common/collective trusts at beginning of year | 2011-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2011-12-31 | $3,532,539 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $3,697,347 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $3,697,347 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $5,734 |
| Asset value of US Government securities at end of year | 2011-12-31 | $167,353,364 |
| Asset value of US Government securities at beginning of year | 2011-12-31 | $188,602,645 |
| Asset. Corporate debt instrument preferred debt at end of year | 2011-12-31 | $55,051,032 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2011-12-31 | $62,883,124 |
| Asset. Corporate debt instrument debt (other) at end of year | 2011-12-31 | $25,240,647 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2011-12-31 | $25,557,386 |
| Aggregate proceeds on sale of assets | 2011-12-31 | $94,026,476 |
| Aggregate carrying amount (costs) on sale of assets | 2011-12-31 | $94,244,964 |
| 2010 : STATE STREET U.S. INTERMEDIATE GOVERNMENT/CREDIT BOND INDEX NON-LENDING SERIES FUND CLASS A 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2010-12-31 | $352,731,473 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $352,731,473 |
| Total transfer of assets to this plan | 2010-12-31 | $86,026,747 |
| Total transfer of assets from this plan | 2010-12-31 | $258,652,148 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $5,020,163 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $1,863,551 |
| Total income from all sources (including contributions) | 2010-12-31 | $359,119,758 |
| Total loss/gain on sale of assets | 2010-12-31 | $563,798 |
| Total of all expenses incurred | 2010-12-31 | $43,350 |
| 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 | $290,704,519 |
| Value of total assets at beginning of year | 2010-12-31 | $101,096,900 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $43,350 |
| Total interest from all sources | 2010-12-31 | $5,824,487 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $0 |
| Administrative expenses professional fees incurred | 2010-12-31 | $8,736 |
| Assets. Other investments not covered elsewhere at end of year | 2010-12-31 | $7,510,443 |
| Assets. Other investments not covered elsewhere at beginning of year | 2010-12-31 | $2,008,878 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2010-12-31 | $2,453,574 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2010-12-31 | $1,961,539 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2010-12-31 | $5,020,163 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2010-12-31 | $1,863,551 |
| Administrative expenses (other) incurred | 2010-12-31 | $34,614 |
| Value of net income/loss | 2010-12-31 | $359,076,408 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $285,684,356 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $99,233,349 |
| Interest earned on other investments | 2010-12-31 | $204,467 |
| Income. Interest from US Government securities | 2010-12-31 | $2,690,995 |
| Income. Interest from corporate debt instruments | 2010-12-31 | $2,923,225 |
| Value of interest in common/collective trusts at end of year | 2010-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2010-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2010-12-31 | $3,697,347 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2010-12-31 | $421,729 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2010-12-31 | $421,729 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2010-12-31 | $5,800 |
| Asset value of US Government securities at end of year | 2010-12-31 | $188,602,645 |
| Asset value of US Government securities at beginning of year | 2010-12-31 | $60,966,122 |
| Asset. Corporate debt instrument preferred debt at end of year | 2010-12-31 | $62,883,124 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2010-12-31 | $25,695,625 |
| Asset. Corporate debt instrument debt (other) at end of year | 2010-12-31 | $25,557,386 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2010-12-31 | $10,043,007 |
| Aggregate proceeds on sale of assets | 2010-12-31 | $85,784,602 |
| Aggregate carrying amount (costs) on sale of assets | 2010-12-31 | $85,220,804 |
