STATE STREET GLOBAL ADVISORS TRUST COMPANY has sponsored the creation of one or more 401k plans.
Submission information for form 5500 for 401k plan SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A
401k plan membership statisitcs for SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A
| Measure | Date | Value |
|---|
| 2022 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2022 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2022-12-31 | $-2,938,477,156 |
| Total unrealized appreciation/depreciation of assets | 2022-12-31 | $-2,938,477,156 |
| Total transfer of assets to this plan | 2022-12-31 | $3,412,363,988 |
| Total transfer of assets from this plan | 2022-12-31 | $3,945,439,279 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $1,441,168,508 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2022-12-31 | $1,443,677,430 |
| Total income from all sources (including contributions) | 2022-12-31 | $-2,849,196,697 |
| Total loss/gain on sale of assets | 2022-12-31 | $-350,365,614 |
| Total of all expenses incurred | 2022-12-31 | $3,033,982 |
| 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 | $19,786,276,637 |
| Value of total assets at beginning of year | 2022-12-31 | $23,174,091,529 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2022-12-31 | $3,033,982 |
| Total interest from all sources | 2022-12-31 | $439,646,073 |
| Total dividends received (eg from common stock, registered investment company shares) | 2022-12-31 | $0 |
| Administrative expenses professional fees incurred | 2022-12-31 | $16,405 |
| Assets. Other investments not covered elsewhere at end of year | 2022-12-31 | $441,293,212 |
| Assets. Other investments not covered elsewhere at beginning of year | 2022-12-31 | $472,077,053 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2022-12-31 | $518,614,089 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2022-12-31 | $583,679,905 |
| Assets. Loans (other than to participants) at end of year | 2022-12-31 | $330,617,998 |
| Assets. Loans (other than to participants) at beginning of year | 2022-12-31 | $424,385,894 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2022-12-31 | $1,441,168,508 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2022-12-31 | $1,443,677,430 |
| Administrative expenses (other) incurred | 2022-12-31 | $2,187,130 |
| Total non interest bearing cash at end of year | 2022-12-31 | $26,803 |
| Total non interest bearing cash at beginning of year | 2022-12-31 | $0 |
| Value of net income/loss | 2022-12-31 | $-2,852,230,679 |
| Value of net assets at end of year (total assets less liabilities) | 2022-12-31 | $18,345,108,129 |
| Value of net assets at beginning of year (total assets less liabilities) | 2022-12-31 | $21,730,414,099 |
| Investment advisory and management fees | 2022-12-31 | $830,447 |
| Income. Interest from loans (other than to participants) | 2022-12-31 | $-13,668,653 |
| Interest earned on other investments | 2022-12-31 | $14,652,066 |
| Income. Interest from US Government securities | 2022-12-31 | $269,680,679 |
| Income. Interest from corporate debt instruments | 2022-12-31 | $162,160,673 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2022-12-31 | $1,177,230,252 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2022-12-31 | $988,732,609 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2022-12-31 | $988,732,609 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2022-12-31 | $6,821,308 |
| Asset value of US Government securities at end of year | 2022-12-31 | $12,683,840,156 |
| Asset value of US Government securities at beginning of year | 2022-12-31 | $14,777,896,309 |
| 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 | $3,125,052,674 |
| Asset. Corporate debt instrument debt (other) at end of year | 2022-12-31 | $4,634,654,127 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2022-12-31 | $2,802,267,085 |
| Aggregate proceeds on sale of assets | 2022-12-31 | $12,366,620,225 |
| Aggregate carrying amount (costs) on sale of assets | 2022-12-31 | $12,716,985,839 |
| 2021 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2021 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2021-12-31 | $-475,497,773 |
| Total unrealized appreciation/depreciation of assets | 2021-12-31 | $-475,497,773 |
| Total transfer of assets to this plan | 2021-12-31 | $8,075,680,105 |
| Total transfer of assets from this plan | 2021-12-31 | $3,708,418,534 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $1,443,677,430 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-12-31 | $1,277,519,895 |
| Total income from all sources (including contributions) | 2021-12-31 | $-262,422,624 |
| Total loss/gain on sale of assets | 2021-12-31 | $-152,834,801 |
| Total of all expenses incurred | 2021-12-31 | $3,370,204 |
| 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 | $23,174,091,529 |
| Value of total assets at beginning of year | 2021-12-31 | $18,906,465,251 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-12-31 | $3,370,204 |
| Total interest from all sources | 2021-12-31 | $365,909,950 |
| Total dividends received (eg from common stock, registered investment company shares) | 2021-12-31 | $0 |
| Administrative expenses professional fees incurred | 2021-12-31 | $38,220 |
| Assets. Other investments not covered elsewhere at end of year | 2021-12-31 | $472,077,053 |
| Assets. Other investments not covered elsewhere at beginning of year | 2021-12-31 | $410,533,883 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2021-12-31 | $583,679,905 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2021-12-31 | $644,719,335 |
| Assets. Loans (other than to participants) at end of year | 2021-12-31 | $424,385,894 |
| Assets. Loans (other than to participants) at beginning of year | 2021-12-31 | $376,468,295 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2021-12-31 | $1,443,677,430 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2021-12-31 | $1,277,519,895 |
| Administrative expenses (other) incurred | 2021-12-31 | $3,331,984 |
| 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 | $82,461 |
| Value of net income/loss | 2021-12-31 | $-265,792,828 |
| Value of net assets at end of year (total assets less liabilities) | 2021-12-31 | $21,730,414,099 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-12-31 | $17,628,945,356 |
| Interest earned on other investments | 2021-12-31 | $11,754,508 |
| Income. Interest from US Government securities | 2021-12-31 | $210,701,744 |
| Income. Interest from corporate debt instruments | 2021-12-31 | $142,018,571 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2021-12-31 | $988,732,609 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2021-12-31 | $906,629,264 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2021-12-31 | $906,629,264 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2021-12-31 | $1,435,127 |
| Asset value of US Government securities at end of year | 2021-12-31 | $14,777,896,309 |
| Asset value of US Government securities at beginning of year | 2021-12-31 | $11,436,685,907 |
| Asset. Corporate debt instrument preferred debt at end of year | 2021-12-31 | $3,125,052,674 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2021-12-31 | $2,674,983,118 |
| Asset. Corporate debt instrument debt (other) at end of year | 2021-12-31 | $2,802,267,085 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2021-12-31 | $2,456,362,988 |
| Aggregate proceeds on sale of assets | 2021-12-31 | $21,724,432,051 |
| Aggregate carrying amount (costs) on sale of assets | 2021-12-31 | $21,877,266,852 |
| 2020 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2020 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2020-12-31 | $810,091,875 |
| Total unrealized appreciation/depreciation of assets | 2020-12-31 | $810,091,875 |
| Total transfer of assets to this plan | 2020-12-31 | $7,352,680,856 |
| Total transfer of assets from this plan | 2020-12-31 | $6,229,246,213 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $1,277,519,895 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $834,867,610 |
| Total income from all sources (including contributions) | 2020-12-31 | $1,138,735,124 |
| Total loss/gain on sale of assets | 2020-12-31 | $-31,084,597 |
| Total of all expenses incurred | 2020-12-31 | $1,933,223 |
| 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 | $18,906,465,251 |
| Value of total assets at beginning of year | 2020-12-31 | $16,203,576,422 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $1,933,223 |
| Total interest from all sources | 2020-12-31 | $359,727,846 |
| Total dividends received (eg from common stock, registered investment company shares) | 2020-12-31 | $0 |
| Administrative expenses professional fees incurred | 2020-12-31 | $39,810 |
| Assets. Other investments not covered elsewhere at end of year | 2020-12-31 | $410,533,883 |
| Assets. Other investments not covered elsewhere at beginning of year | 2020-12-31 | $334,285,840 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $644,719,335 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $547,050,106 |
| Assets. Loans (other than to participants) at end of year | 2020-12-31 | $376,468,295 |
| Assets. Loans (other than to participants) at beginning of year | 2020-12-31 | $311,050,065 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $1,277,519,895 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $834,867,610 |
| Administrative expenses (other) incurred | 2020-12-31 | $1,893,413 |
| Total non interest bearing cash at end of year | 2020-12-31 | $82,461 |
| Total non interest bearing cash at beginning of year | 2020-12-31 | $31,675 |
| Value of net income/loss | 2020-12-31 | $1,136,801,901 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $17,628,945,356 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $15,368,708,812 |
| Income. Interest from loans (other than to participants) | 2020-12-31 | $7,028,633 |
| Interest earned on other investments | 2020-12-31 | $11,877,032 |
| Income. Interest from US Government securities | 2020-12-31 | $237,297,713 |
| Income. Interest from corporate debt instruments | 2020-12-31 | $100,084,107 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2020-12-31 | $906,629,264 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2020-12-31 | $412,000,168 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2020-12-31 | $412,000,168 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $3,440,361 |
| Asset value of US Government securities at end of year | 2020-12-31 | $11,436,685,907 |
| Asset value of US Government securities at beginning of year | 2020-12-31 | $10,342,385,942 |
| Asset. Corporate debt instrument preferred debt at end of year | 2020-12-31 | $2,674,983,118 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2020-12-31 | $2,220,814,015 |
| Asset. Corporate debt instrument debt (other) at end of year | 2020-12-31 | $2,456,362,988 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2020-12-31 | $2,035,958,611 |
| Aggregate proceeds on sale of assets | 2020-12-31 | $16,301,948,905 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $16,333,033,502 |
| 2019 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2019 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $778,869,224 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $778,869,224 |
| Total transfer of assets to this plan | 2019-12-31 | $5,797,864,271 |
| Total transfer of assets from this plan | 2019-12-31 | $4,380,979,036 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $834,867,610 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $709,573,330 |
| Total income from all sources (including contributions) | 2019-12-31 | $1,207,986,230 |
| Total loss/gain on sale of assets | 2019-12-31 | $23,569,678 |
| Total of all expenses incurred | 2019-12-31 | $1,736,554 |
| 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 | $16,203,576,422 |
| Value of total assets at beginning of year | 2019-12-31 | $13,455,147,231 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $1,736,554 |
| Total interest from all sources | 2019-12-31 | $405,547,328 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $0 |
| Administrative expenses professional fees incurred | 2019-12-31 | $22,016 |
| Assets. Other investments not covered elsewhere at end of year | 2019-12-31 | $334,285,840 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $266,981,178 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $547,050,106 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $426,922,643 |
| Assets. Loans (other than to participants) at end of year | 2019-12-31 | $311,050,065 |
| Assets. Loans (other than to participants) at beginning of year | 2019-12-31 | $250,475,272 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $834,867,610 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $709,573,330 |
| Administrative expenses (other) incurred | 2019-12-31 | $1,714,538 |
| Total non interest bearing cash at end of year | 2019-12-31 | $31,675 |
| Total non interest bearing cash at beginning of year | 2019-12-31 | $31,992 |
| Value of net income/loss | 2019-12-31 | $1,206,249,676 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $15,368,708,812 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $12,745,573,901 |
| Income. Interest from loans (other than to participants) | 2019-12-31 | $8,615,010 |
| Interest earned on other investments | 2019-12-31 | $11,475,929 |
| Income. Interest from US Government securities | 2019-12-31 | $232,693,617 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $142,486,877 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $412,000,168 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $412,154,705 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $412,154,705 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $10,275,895 |
| Asset value of US Government securities at end of year | 2019-12-31 | $10,342,385,942 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $8,516,229,581 |
| Asset. Corporate debt instrument preferred debt at end of year | 2019-12-31 | $2,220,814,015 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2019-12-31 | $1,983,407,868 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $2,035,958,611 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $1,598,943,992 |
| Aggregate proceeds on sale of assets | 2019-12-31 | $10,060,527,894 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $10,036,958,216 |
| 2018 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $-326,910,690 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $-326,910,690 |
| Total transfer of assets to this plan | 2018-12-31 | $4,005,642,706 |
| Total transfer of assets from this plan | 2018-12-31 | $4,581,028,639 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $709,573,330 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $908,619,875 |
| Total income from all sources (including contributions) | 2018-12-31 | $-4,751,706 |
| Total loss/gain on sale of assets | 2018-12-31 | $-51,107,713 |
| Total of all expenses incurred | 2018-12-31 | $1,576,758 |
| 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 | $13,455,147,231 |
| Value of total assets at beginning of year | 2018-12-31 | $14,235,908,173 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $1,576,758 |
| Total interest from all sources | 2018-12-31 | $373,266,697 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $0 |
| Administrative expenses professional fees incurred | 2018-12-31 | $30,595 |
| Assets. Other investments not covered elsewhere at end of year | 2018-12-31 | $266,981,178 |
| Assets. Other investments not covered elsewhere at beginning of year | 2018-12-31 | $279,601,194 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $426,922,643 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $697,151,881 |
| Assets. Loans (other than to participants) at end of year | 2018-12-31 | $250,475,272 |
| Assets. Loans (other than to participants) at beginning of year | 2018-12-31 | $233,366,693 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $709,573,330 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $908,619,875 |
| Administrative expenses (other) incurred | 2018-12-31 | $1,546,163 |
| Total non interest bearing cash at end of year | 2018-12-31 | $31,992 |
| Total non interest bearing cash at beginning of year | 2018-12-31 | $967,980 |
| Value of net income/loss | 2018-12-31 | $-6,328,464 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $12,745,573,901 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $13,327,288,298 |
| Income. Interest from loans (other than to participants) | 2018-12-31 | $8,431,100 |
| Interest earned on other investments | 2018-12-31 | $9,798,983 |
| Income. Interest from US Government securities | 2018-12-31 | $213,649,154 |
| Income. Interest from corporate debt instruments | 2018-12-31 | $134,330,973 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2018-12-31 | $412,154,705 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2018-12-31 | $364,314,071 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2018-12-31 | $364,314,071 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $7,056,487 |
| Asset value of US Government securities at end of year | 2018-12-31 | $8,516,229,581 |
| Asset value of US Government securities at beginning of year | 2018-12-31 | $8,891,279,259 |
| Asset. Corporate debt instrument preferred debt at end of year | 2018-12-31 | $1,983,407,868 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2018-12-31 | $2,104,727,173 |
| Asset. Corporate debt instrument debt (other) at end of year | 2018-12-31 | $1,598,943,992 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2018-12-31 | $1,664,499,922 |
| Aggregate proceeds on sale of assets | 2018-12-31 | $8,261,986,406 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $8,313,094,119 |
| 2017 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-12-31 | $147,329,916 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $147,329,916 |
| Total transfer of assets to this plan | 2017-12-31 | $5,415,153,039 |
| Total transfer of assets from this plan | 2017-12-31 | $7,884,148,280 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $908,619,875 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $560,494,950 |
| Total income from all sources (including contributions) | 2017-12-31 | $561,424,696 |
| Total loss/gain on sale of assets | 2017-12-31 | $24,433,725 |
| Total of all expenses incurred | 2017-12-31 | $1,807,091 |
| 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 | $14,235,908,173 |
| Value of total assets at beginning of year | 2017-12-31 | $15,797,160,884 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $1,807,091 |
| Total interest from all sources | 2017-12-31 | $389,661,055 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $0 |
| Administrative expenses professional fees incurred | 2017-12-31 | $38,458 |
| Assets. Other investments not covered elsewhere at end of year | 2017-12-31 | $279,601,194 |
| Assets. Other investments not covered elsewhere at beginning of year | 2017-12-31 | $369,077,126 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $697,151,881 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $507,474,960 |
| Assets. Loans (other than to participants) at end of year | 2017-12-31 | $233,366,693 |
| Assets. Loans (other than to participants) at beginning of year | 2017-12-31 | $242,851,926 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $908,619,875 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $560,494,950 |
| Administrative expenses (other) incurred | 2017-12-31 | $1,768,633 |
| Total non interest bearing cash at end of year | 2017-12-31 | $967,980 |
| Total non interest bearing cash at beginning of year | 2017-12-31 | $137,208 |
| Value of net income/loss | 2017-12-31 | $559,617,605 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $13,327,288,298 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $15,236,665,934 |
| Income. Interest from loans (other than to participants) | 2017-12-31 | $8,528,480 |
| Interest earned on other investments | 2017-12-31 | $12,432,221 |
| Income. Interest from US Government securities | 2017-12-31 | $216,224,389 |
| Income. Interest from corporate debt instruments | 2017-12-31 | $147,631,265 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-12-31 | $364,314,071 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-12-31 | $324,213,158 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-12-31 | $324,213,158 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $4,844,700 |
| Asset value of US Government securities at end of year | 2017-12-31 | $8,891,279,259 |
| Asset value of US Government securities at beginning of year | 2017-12-31 | $9,994,952,058 |
| Asset. Corporate debt instrument preferred debt at end of year | 2017-12-31 | $2,104,727,173 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2017-12-31 | $2,467,238,167 |
| Asset. Corporate debt instrument debt (other) at end of year | 2017-12-31 | $1,664,499,922 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2017-12-31 | $1,891,216,281 |
| Aggregate proceeds on sale of assets | 2017-12-31 | $13,139,660,137 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $13,115,226,412 |
| 2016 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $1,601,263 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $1,601,263 |
| Total transfer of assets to this plan | 2016-12-31 | $4,275,476,944 |
| Total transfer of assets from this plan | 2016-12-31 | $2,634,204,494 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $560,494,950 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $716,698,289 |
| Total income from all sources (including contributions) | 2016-12-31 | $329,719,024 |
| Total loss/gain on sale of assets | 2016-12-31 | $-39,027,778 |
| Total of all expenses incurred | 2016-12-31 | $1,768,495 |
| 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 | $15,797,160,884 |
| Value of total assets at beginning of year | 2016-12-31 | $13,984,141,244 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $1,768,495 |
| Total interest from all sources | 2016-12-31 | $367,145,539 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $0 |
| Administrative expenses professional fees incurred | 2016-12-31 | $43,259 |
| Assets. Other investments not covered elsewhere at end of year | 2016-12-31 | $369,077,126 |
| Assets. Other investments not covered elsewhere at beginning of year | 2016-12-31 | $352,981,916 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $507,474,960 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $246,509,136 |
| Assets. Loans (other than to participants) at end of year | 2016-12-31 | $242,851,926 |
| Assets. Loans (other than to participants) at beginning of year | 2016-12-31 | $230,243,056 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $560,494,950 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $716,698,289 |
| Administrative expenses (other) incurred | 2016-12-31 | $1,725,236 |
| Total non interest bearing cash at end of year | 2016-12-31 | $137,208 |
| Total non interest bearing cash at beginning of year | 2016-12-31 | $0 |
| Value of net income/loss | 2016-12-31 | $327,950,529 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $15,236,665,934 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $13,267,442,955 |
| Income. Interest from loans (other than to participants) | 2016-12-31 | $-29,966,755 |
| Interest earned on other investments | 2016-12-31 | $15,173,762 |
| Income. Interest from US Government securities | 2016-12-31 | $235,778,719 |
| Income. Interest from corporate debt instruments | 2016-12-31 | $143,788,628 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $324,213,158 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $556,388,000 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $556,388,000 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $2,371,185 |
| Asset value of US Government securities at end of year | 2016-12-31 | $9,994,952,058 |
| Asset value of US Government securities at beginning of year | 2016-12-31 | $8,996,812,447 |
| Asset. Corporate debt instrument preferred debt at end of year | 2016-12-31 | $2,467,238,167 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2016-12-31 | $2,061,761,232 |
| Asset. Corporate debt instrument debt (other) at end of year | 2016-12-31 | $1,891,216,281 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2016-12-31 | $1,539,445,457 |
| Aggregate proceeds on sale of assets | 2016-12-31 | $8,560,097,072 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $8,599,124,850 |
| 2015 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $-187,252,295 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-187,252,295 |
| Total transfer of assets to this plan | 2015-12-31 | $3,548,742,196 |
| Total transfer of assets from this plan | 2015-12-31 | $2,930,464,284 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $716,698,289 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $874,716,546 |
| Total income from all sources (including contributions) | 2015-12-31 | $76,135,858 |
| Total loss/gain on sale of assets | 2015-12-31 | $-64,851,675 |
| Total of all expenses incurred | 2015-12-31 | $1,481,216 |
| 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 | $13,984,141,244 |
| Value of total assets at beginning of year | 2015-12-31 | $13,449,226,947 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $1,481,216 |
| Total interest from all sources | 2015-12-31 | $328,239,828 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $0 |
| Administrative expenses professional fees incurred | 2015-12-31 | $40,843 |
| Assets. Other investments not covered elsewhere at end of year | 2015-12-31 | $352,981,916 |
| Assets. Other investments not covered elsewhere at beginning of year | 2015-12-31 | $367,340,331 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $246,509,136 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $218,654,998 |
| Assets. Loans (other than to participants) at end of year | 2015-12-31 | $230,243,056 |
| Assets. Loans (other than to participants) at beginning of year | 2015-12-31 | $248,661,673 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $716,698,289 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2015-12-31 | $874,716,546 |
| Administrative expenses (other) incurred | 2015-12-31 | $1,440,373 |
| 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 | $0 |
| Value of net income/loss | 2015-12-31 | $74,654,642 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $13,267,442,955 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $12,574,510,401 |
| Income. Interest from loans (other than to participants) | 2015-12-31 | $9,031,299 |
| Interest earned on other investments | 2015-12-31 | $-17,320,183 |
| Income. Interest from US Government securities | 2015-12-31 | $209,677,070 |
| Income. Interest from corporate debt instruments | 2015-12-31 | $125,761,663 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $556,388,000 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $737,425,759 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $737,425,759 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2015-12-31 | $1,089,979 |
| Asset value of US Government securities at end of year | 2015-12-31 | $8,996,812,447 |
| Asset value of US Government securities at beginning of year | 2015-12-31 | $8,516,013,857 |
| Asset. Corporate debt instrument preferred debt at end of year | 2015-12-31 | $2,061,761,232 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2015-12-31 | $2,112,386,064 |
| Asset. Corporate debt instrument debt (other) at end of year | 2015-12-31 | $1,539,445,457 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2015-12-31 | $1,248,744,265 |
| Aggregate proceeds on sale of assets | 2015-12-31 | $9,194,610,943 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $9,259,462,618 |
| 2014 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $336,408,202 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $336,408,202 |
| Total transfer of assets to this plan | 2014-12-31 | $4,005,790,451 |
| Total transfer of assets from this plan | 2014-12-31 | $1,858,723,492 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $874,716,546 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $529,490,650 |
| Total income from all sources (including contributions) | 2014-12-31 | $628,817,053 |
| Total loss/gain on sale of assets | 2014-12-31 | $13,443,606 |
| Total of all expenses incurred | 2014-12-31 | $1,272,635 |
| 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 | $13,449,226,947 |
| Value of total assets at beginning of year | 2014-12-31 | $10,329,389,674 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $1,272,635 |
| Total interest from all sources | 2014-12-31 | $278,965,245 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $0 |
| Administrative expenses professional fees incurred | 2014-12-31 | $39,050 |
| Assets. Other investments not covered elsewhere at end of year | 2014-12-31 | $367,340,331 |
| Assets. Other investments not covered elsewhere at beginning of year | 2014-12-31 | $274,891,124 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $218,654,998 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $157,960,702 |
| Assets. Loans (other than to participants) at end of year | 2014-12-31 | $248,661,673 |
| Assets. Loans (other than to participants) at beginning of year | 2014-12-31 | $156,109,183 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2014-12-31 | $874,716,546 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2014-12-31 | $529,490,650 |
| Administrative expenses (other) incurred | 2014-12-31 | $1,233,585 |
| Total non interest bearing cash at end of year | 2014-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2014-12-31 | $7,054 |
| Value of net income/loss | 2014-12-31 | $627,544,418 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $12,574,510,401 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $9,799,899,024 |
| Income. Interest from loans (other than to participants) | 2014-12-31 | $8,682,244 |
| Interest earned on other investments | 2014-12-31 | $-7,404,116 |
| Income. Interest from US Government securities | 2014-12-31 | $174,364,735 |
| Income. Interest from corporate debt instruments | 2014-12-31 | $102,239,803 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $737,425,759 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $541,909,082 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $541,909,082 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $1,082,579 |
| Asset value of US Government securities at end of year | 2014-12-31 | $8,516,013,857 |
| Asset value of US Government securities at beginning of year | 2014-12-31 | $6,754,638,228 |
| Asset. Corporate debt instrument preferred debt at end of year | 2014-12-31 | $2,112,386,064 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2014-12-31 | $1,593,131,145 |
| Asset. Corporate debt instrument debt (other) at end of year | 2014-12-31 | $1,248,744,265 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2014-12-31 | $850,743,156 |
| Aggregate proceeds on sale of assets | 2014-12-31 | $9,123,211,631 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $9,109,768,025 |
| 2013 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2013-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $-336,516,119 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $-336,516,119 |
| Total transfer of assets to this plan | 2013-12-31 | $4,535,092,663 |
| Total transfer of assets from this plan | 2013-12-31 | $2,665,940,471 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $529,490,650 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $697,776,058 |
| Total income from all sources (including contributions) | 2013-12-31 | $-201,673,549 |
| Total loss/gain on sale of assets | 2013-12-31 | $-86,811,285 |
| Total of all expenses incurred | 2013-12-31 | $1,669,646 |
| 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 | $10,329,389,674 |
| Value of total assets at beginning of year | 2013-12-31 | $8,831,866,085 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $1,669,646 |
| Total interest from all sources | 2013-12-31 | $221,653,855 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $0 |
| Administrative expenses professional fees incurred | 2013-12-31 | $35,785 |
| Assets. Other investments not covered elsewhere at end of year | 2013-12-31 | $274,891,124 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $208,757,214 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $157,960,702 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $113,519,084 |
| Assets. Loans (other than to participants) at end of year | 2013-12-31 | $156,109,183 |
| Assets. Loans (other than to participants) at beginning of year | 2013-12-31 | $140,742,177 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2013-12-31 | $529,490,650 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $697,776,058 |
| Administrative expenses (other) incurred | 2013-12-31 | $1,633,861 |
| Total non interest bearing cash at end of year | 2013-12-31 | $7,054 |
| Total non interest bearing cash at beginning of year | 2013-12-31 | $0 |
| Value of net income/loss | 2013-12-31 | $-203,343,195 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $9,799,899,024 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $8,134,090,027 |
| Investment advisory and management fees | 2013-12-31 | $0 |
| Interest on participant loans | 2013-12-31 | $0 |
| Income. Interest from loans (other than to participants) | 2013-12-31 | $-26,135,931 |
| Interest earned on other investments | 2013-12-31 | $10,459,085 |
| Income. Interest from US Government securities | 2013-12-31 | $153,003,565 |
| Income. Interest from corporate debt instruments | 2013-12-31 | $83,529,253 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $541,909,082 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $749,386,459 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $749,386,459 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $797,883 |
| Asset value of US Government securities at end of year | 2013-12-31 | $6,754,638,228 |
| Asset value of US Government securities at beginning of year | 2013-12-31 | $5,669,551,313 |
| Asset. Corporate debt instrument preferred debt at end of year | 2013-12-31 | $1,593,131,145 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2013-12-31 | $1,309,230,657 |
| Asset. Corporate debt instrument debt (other) at end of year | 2013-12-31 | $850,743,156 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2013-12-31 | $640,679,181 |
| Contract administrator fees | 2013-12-31 | $0 |
| Aggregate proceeds on sale of assets | 2013-12-31 | $6,350,316,840 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $6,437,128,125 |
| 2012 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2012 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2012-12-31 | $130,799,250 |
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $130,799,250 |
| Total transfer of assets to this plan | 2012-12-31 | $3,118,916,198 |
| Total transfer of assets from this plan | 2012-12-31 | $1,812,843,235 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $697,776,058 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $342,462,321 |
| Total income from all sources (including contributions) | 2012-12-31 | $297,630,562 |
| Total loss/gain on sale of assets | 2012-12-31 | $-30,328,593 |
| Total of all expenses incurred | 2012-12-31 | $1,459,137 |
| 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 | $8,831,866,085 |
| Value of total assets at beginning of year | 2012-12-31 | $6,874,307,960 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $1,459,137 |
| Total interest from all sources | 2012-12-31 | $197,159,905 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $0 |
| Administrative expenses professional fees incurred | 2012-12-31 | $34,668 |
| Assets. Other investments not covered elsewhere at end of year | 2012-12-31 | $208,757,214 |
| Assets. Other investments not covered elsewhere at beginning of year | 2012-12-31 | $182,073,199 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2012-12-31 | $113,519,084 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2012-12-31 | $208,214,844 |
| Assets. Loans (other than to participants) at end of year | 2012-12-31 | $140,742,177 |
| Assets. Loans (other than to participants) at beginning of year | 2012-12-31 | $123,951,788 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2012-12-31 | $697,776,058 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2012-12-31 | $342,462,321 |
| Administrative expenses (other) incurred | 2012-12-31 | $1,424,469 |
| 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 | $17,131 |
| Value of net income/loss | 2012-12-31 | $296,171,425 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $8,134,090,027 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $6,531,845,639 |
| Income. Interest from loans (other than to participants) | 2012-12-31 | $-19,351,680 |
| Interest earned on other investments | 2012-12-31 | $8,232,424 |
| Income. Interest from US Government securities | 2012-12-31 | $137,615,169 |
| Income. Interest from corporate debt instruments | 2012-12-31 | $69,565,529 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $749,386,459 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $371,267,766 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $371,267,766 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $1,098,463 |
| Asset value of US Government securities at end of year | 2012-12-31 | $5,669,551,313 |
| Asset value of US Government securities at beginning of year | 2012-12-31 | $4,563,487,586 |
| Asset. Corporate debt instrument preferred debt at end of year | 2012-12-31 | $1,309,230,657 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2012-12-31 | $939,599,418 |
| Asset. Corporate debt instrument debt (other) at end of year | 2012-12-31 | $640,679,181 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2012-12-31 | $485,696,228 |
| Aggregate proceeds on sale of assets | 2012-12-31 | $5,125,631,522 |
| Aggregate carrying amount (costs) on sale of assets | 2012-12-31 | $5,155,960,115 |
| 2011 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2011-12-31 | $162,269,178 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $162,269,178 |
| Total transfer of assets to this plan | 2011-12-31 | $5,515,064,652 |
| Total transfer of assets from this plan | 2011-12-31 | $1,576,930,742 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $342,462,321 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $122,760,936 |
| Total income from all sources (including contributions) | 2011-12-31 | $265,649,196 |
| Total loss/gain on sale of assets | 2011-12-31 | $-9,576,920 |
| Total of all expenses incurred | 2011-12-31 | $686,904 |
| 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 | $6,874,307,960 |
| Value of total assets at beginning of year | 2011-12-31 | $2,451,510,373 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $686,904 |
| Total interest from all sources | 2011-12-31 | $112,956,938 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $0 |
| Administrative expenses professional fees incurred | 2011-12-31 | $13,320 |
| Assets. Other investments not covered elsewhere at end of year | 2011-12-31 | $182,073,199 |
| Assets. Other investments not covered elsewhere at beginning of year | 2011-12-31 | $59,983,175 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2011-12-31 | $208,214,844 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2011-12-31 | $75,715,557 |
| Assets. Loans (other than to participants) at end of year | 2011-12-31 | $123,951,788 |
| Assets. Loans (other than to participants) at beginning of year | 2011-12-31 | $63,624,238 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2011-12-31 | $342,462,321 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2011-12-31 | $122,760,936 |
| Administrative expenses (other) incurred | 2011-12-31 | $673,584 |
| Total non interest bearing cash at end of year | 2011-12-31 | $17,131 |
| Total non interest bearing cash at beginning of year | 2011-12-31 | $4,292 |
| Value of net income/loss | 2011-12-31 | $264,962,292 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $6,531,845,639 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $2,328,749,437 |
| Income. Interest from loans (other than to participants) | 2011-12-31 | $-3,929,807 |
| Interest earned on other investments | 2011-12-31 | $4,274,050 |
| Income. Interest from US Government securities | 2011-12-31 | $76,852,524 |
| Income. Interest from corporate debt instruments | 2011-12-31 | $35,450,181 |
| 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 | $371,267,766 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $68,616,145 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $68,616,145 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $309,990 |
| Asset value of US Government securities at end of year | 2011-12-31 | $4,563,487,586 |
| Asset value of US Government securities at beginning of year | 2011-12-31 | $1,665,696,784 |
| Asset. Corporate debt instrument preferred debt at end of year | 2011-12-31 | $939,599,418 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2011-12-31 | $357,292,521 |
| Asset. Corporate debt instrument debt (other) at end of year | 2011-12-31 | $485,696,228 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2011-12-31 | $160,577,661 |
| Aggregate proceeds on sale of assets | 2011-12-31 | $2,197,419,253 |
| Aggregate carrying amount (costs) on sale of assets | 2011-12-31 | $2,206,996,173 |
| 2010 : SSGA U.S. BOND INDEX NON-LENDING SERIES FUND CLASS A 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2010-12-31 | $7,143,834 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $7,143,834 |
| Total transfer of assets to this plan | 2010-12-31 | $2,779,321,453 |
| Total transfer of assets from this plan | 2010-12-31 | $1,177,399,046 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $122,760,936 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $53,021,113 |
| Total income from all sources (including contributions) | 2010-12-31 | $59,706,915 |
| Total loss/gain on sale of assets | 2010-12-31 | $422,838 |
| Total of all expenses incurred | 2010-12-31 | $317,926 |
| 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 | $2,451,510,373 |
| Value of total assets at beginning of year | 2010-12-31 | $720,459,154 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $317,926 |
| Total interest from all sources | 2010-12-31 | $52,140,243 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $0 |
| Administrative expenses professional fees incurred | 2010-12-31 | $14,429 |
| Assets. Other investments not covered elsewhere at end of year | 2010-12-31 | $59,983,175 |
| Assets. Other investments not covered elsewhere at beginning of year | 2010-12-31 | $12,468,855 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2010-12-31 | $75,715,557 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2010-12-31 | $11,660,835 |
| Assets. Loans (other than to participants) at end of year | 2010-12-31 | $63,624,238 |
| Assets. Loans (other than to participants) at beginning of year | 2010-12-31 | $22,445,817 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2010-12-31 | $122,760,936 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2010-12-31 | $53,021,113 |
| Administrative expenses (other) incurred | 2010-12-31 | $303,497 |
| Total non interest bearing cash at end of year | 2010-12-31 | $4,292 |
| Value of net income/loss | 2010-12-31 | $59,388,989 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $2,328,749,437 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $667,438,041 |
| Income. Interest from loans (other than to participants) | 2010-12-31 | $-2,363,221 |
| Interest earned on other investments | 2010-12-31 | $1,675,365 |
| Income. Interest from US Government securities | 2010-12-31 | $36,352,615 |
| Income. Interest from corporate debt instruments | 2010-12-31 | $16,297,725 |
| 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 | $68,616,145 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2010-12-31 | $46,178,241 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2010-12-31 | $46,178,241 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2010-12-31 | $177,759 |
| Asset value of US Government securities at end of year | 2010-12-31 | $1,665,696,784 |
| Asset value of US Government securities at beginning of year | 2010-12-31 | $473,442,496 |
| Asset. Corporate debt instrument preferred debt at end of year | 2010-12-31 | $357,292,521 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2010-12-31 | $106,363,190 |
| Asset. Corporate debt instrument debt (other) at end of year | 2010-12-31 | $160,577,661 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2010-12-31 | $47,899,720 |
| Aggregate proceeds on sale of assets | 2010-12-31 | $1,597,096,794 |
| Aggregate carrying amount (costs) on sale of assets | 2010-12-31 | $1,596,673,956 |
