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Investments (Continuous Gross Unrealized Losses for Fixed Maturity Securities Available-For-Sale) (Details) $ in Millions | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | $ 174,502 | $ 62,019
Less than 12 months Gross Unrealized Loss | $ 19,577 | $ 1,264
Total number of securities in an unrealized loss position less than 12 months | 14,391 | 4,774
Equal to or Greater than 12 Months Estimated Fair Value | $ 18,119 | $ 13,224
Equal to or Greater than 12 Months Gross Unrealized Loss | $ 4,172 | $ 1,154
Total number of securities in an unrealized loss position equal or greater than 12 months | 1,752 | 979
U.S. corporate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | $ 53,448 | $ 8,076
Less than 12 months Gross Unrealized Loss | 6,137 | 165
Equal to or Greater than 12 Months Estimated Fair Value | 2,459 | 1,499
Equal to or Greater than 12 Months Gross Unrealized Loss | 568 | 116
Foreign corporate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | 36,341 | 10,011
Less than 12 months Gross Unrealized Loss | 5,653 | 404
Equal to or Greater than 12 Months Estimated Fair Value | 3,764 | 2,834
Equal to or Greater than 12 Months Gross Unrealized Loss | 798 | 327
Foreign government |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | 17,614 | 7,812
Less than 12 months Gross Unrealized Loss | 2,014 | 319
Equal to or Greater than 12 Months Estimated Fair Value | 5,895 | 5,377
Equal to or Greater than 12 Months Gross Unrealized Loss | 1,634 | 502
U.S. government and agency |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | 17,853 | 14,419
Less than 12 months Gross Unrealized Loss | 1,555 | 138
Equal to or Greater than 12 Months Estimated Fair Value | 2,152 | 1,571
Equal to or Greater than 12 Months Gross Unrealized Loss | 652 | 138
RMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | 19,935 | 10,363
Less than 12 months Gross Unrealized Loss | 1,807 | 158
Equal to or Greater than 12 Months Estimated Fair Value | 1,847 | 417
Equal to or Greater than 12 Months Gross Unrealized Loss | 326 | 30
ABS & CLO |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | 14,275 | 8,150
Less than 12 months Gross Unrealized Loss | 794 | 39
Equal to or Greater than 12 Months Estimated Fair Value | 1,201 | 804
Equal to or Greater than 12 Months Gross Unrealized Loss | 103 | 20
Municipals |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | 6,328 | 524
Less than 12 months Gross Unrealized Loss | 1,015 | 10
Equal to or Greater than 12 Months Estimated Fair Value | 74 | 65
Equal to or Greater than 12 Months Gross Unrealized Loss | 25 | 3
CMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | 8,708 | 2,664
Less than 12 months Gross Unrealized Loss | 602 | 31
Equal to or Greater than 12 Months Estimated Fair Value | 727 | 657
Equal to or Greater than 12 Months Gross Unrealized Loss | 66 | 18
Investment Grade |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | 165,299 | 58,358
Less than 12 months Gross Unrealized Loss | 18,444 | 1,123
Equal to or Greater than 12 Months Estimated Fair Value | 16,780 | 12,022
Equal to or Greater than 12 Months Gross Unrealized Loss | $ 3,884 | 1,025
Total number of securities in an unrealized loss position equal or greater than 12 months | 1,535 |
Below Investment Grade |  |
Debt Securities, Available-for-sale [Line Items] |  |
Less than 12 months Estimated Fair Value | $ 9,203 | 3,661
Less than 12 months Gross Unrealized Loss | 1,133 | 141
Equal to or Greater than 12 Months Estimated Fair Value | 1,339 | 1,202
Equal to or Greater than 12 Months Gross Unrealized Loss | $ 288 | $ 129
Total number of securities in an unrealized loss position equal or greater than 12 months | 217 |

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