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Investments - Amortized Cost and Fair Values of Fixed Maturity Securities (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021
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Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | $ 41,588 | $ 39,952
Gross Unrealized Gains | 507 | 4,558
Gross Unrealized Losses | 4,588 | 112
Allowance for Credit Losses | 3 | 18
Estimated Fair Value | 37,504 | 44,380
Shadow adjustments | 41 | 2,200
Corporate and other bonds |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 23,082 | 21,444
Gross Unrealized Gains | 231 | 2,755
Gross Unrealized Losses | 2,398 | 56
Allowance for Credit Losses |  | 11
Estimated Fair Value | 20,915 | 24,132
States, municipalities and political subdivisions |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 9,244 | 10,358
Gross Unrealized Gains | 259 | 1,599
Gross Unrealized Losses | 1,080 | 14
Allowance for Credit Losses |  |
Estimated Fair Value | 8,423 | 11,943
Residential mortgage-backed |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 3,153 | 2,893
Gross Unrealized Gains | 6 | 71
Gross Unrealized Losses | 470 | 8
Allowance for Credit Losses |  |
Estimated Fair Value | 2,689 | 2,956
Commercial mortgage-backed |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 1,921 | 1,987
Gross Unrealized Gains | 4 | 63
Gross Unrealized Losses | 237 | 19
Allowance for Credit Losses |  |
Estimated Fair Value | 1,688 | 2,031
Other asset-backed |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 3,264 | 2,561
Gross Unrealized Gains | 2 | 54
Gross Unrealized Losses | 349 | 10
Allowance for Credit Losses | 3 | 7
Estimated Fair Value | 2,914 | 2,598
Asset-backed |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 8,338 | 7,441
Gross Unrealized Gains | 12 | 188
Gross Unrealized Losses | 1,056 | 37
Allowance for Credit Losses | 3 | 7
Estimated Fair Value | 7,291 | 7,585
U.S. Treasury and obligations of government-sponsored enterprises |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 107 | 132
Gross Unrealized Gains | 3 | 1
Gross Unrealized Losses | 1 | 3
Allowance for Credit Losses |  |
Estimated Fair Value | 109 | 130
Foreign government |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 544 | 570
Gross Unrealized Gains | 2 | 15
Gross Unrealized Losses | 48 | 2
Allowance for Credit Losses |  |
Estimated Fair Value | 498 | 583
Redeemable preferred stock |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 3 |
Gross Unrealized Gains |  |
Gross Unrealized Losses |  |
Allowance for Credit Losses |  |
Estimated Fair Value | 3 |
Fixed maturities available-for-sale |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 41,318 | 39,945
Gross Unrealized Gains | 507 | 4,558
Gross Unrealized Losses | 4,583 | 112
Allowance for Credit Losses | 3 | 18
Estimated Fair Value | 37,239 | 44,373
Fixed maturities trading |  |
Amortized Cost and Fair Values of Fixed Maturity Securities [Abstract] |  |
Cost or Amortized Cost | 270 | 7
Gross Unrealized Gains |  |
Gross Unrealized Losses | 5 |
Allowance for Credit Losses |  |
Estimated Fair Value | $ 265 | $ 7

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- Definition To the extent that unrealized gains on fixed income securities supporting long term care products and structured settlements not funded by annuities would result in a premium deficiency if those gains were realized, a related increase in Insurance reserves is recorded, net of tax and noncontrolling interests, as a reduction of net unrealized gains through Other comprehensive income (loss) (Shadow Adjustments). + References No definition available. + Details
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