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Investments (Reconciliation Of Available-For-Sale Securities From Cost Basis To Fair Value) (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | $ 105,177,000,000 | $ 104,174,000,000
Allowance for Credit Losses | 19,000,000 | 13,000,000
Fair Value | 118,746,000,000 | 123,044,000,000
Fixed Maturity AFS Securities [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 105,177,000,000 | 104,174,000,000
Gross unrealized gains | 14,039,000,000 | 19,081,000,000
Gross unrealized losses | 451,000,000 | 198,000,000
Allowance for Credit Losses | 19,000,000 | 13,000,000
Fair Value | 118,746,000,000 | 123,044,000,000
Fixed Maturity AFS Securities [Member] | Corporate Bonds [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 86,373,000,000 | 86,289,000,000
Gross unrealized gains | 12,113,000,000 | 16,662,000,000
Gross unrealized losses | 349,000,000 | 150,000,000
Allowance for Credit Losses | 17,000,000 | 12,000,000
Fair Value | 98,120,000,000 | 102,789,000,000
Fixed Maturity AFS Securities [Member] | U.S. Government Bonds [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 375,000,000 | 397,000,000
Gross unrealized gains | 60,000,000 | 88,000,000
Gross unrealized losses | 2,000,000 | 1,000,000
Fair Value | 433,000,000 | 484,000,000
Fixed Maturity AFS Securities [Member] | State And Municipal Bonds [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 5,322,000,000 | 5,360,000,000
Gross unrealized gains | 1,311,000,000 | 1,561,000,000
Gross unrealized losses | 12,000,000 |
Fair Value | 6,621,000,000 | 6,921,000,000
Fixed Maturity AFS Securities [Member] | Foreign Government Bonds [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 373,000,000 | 384,000,000
Gross unrealized gains | 64,000,000 | 87,000,000
Gross unrealized losses | 5,000,000 | 1,000,000
Fair Value | 432,000,000 | 470,000,000
Fixed Maturity AFS Securities [Member] | RMBS [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 2,334,000,000 | 2,765,000,000
Gross unrealized gains | 196,000,000 | 313,000,000
Gross unrealized losses | 4,000,000 | 1,000,000
Allowance for Credit Losses | 1,000,000 | 1,000,000
Fair Value | 2,525,000,000 | 3,076,000,000
Fixed Maturity AFS Securities [Member] | CMBS [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 1,552,000,000 | 1,390,000,000
Gross unrealized gains | 61,000,000 | 115,000,000
Gross unrealized losses | 14,000,000 |
Fair Value | 1,599,000,000 | 1,505,000,000
Fixed Maturity AFS Securities [Member] | ABS [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 8,439,000,000 | 7,041,000,000
Gross unrealized gains | 127,000,000 | 158,000,000
Gross unrealized losses | 54,000,000 | 15,000,000
Fair Value | 8,512,000,000 | 7,184,000,000
Fixed Maturity AFS Securities [Member] | Hybrid And Redeemable Preferred Securities [Member] |  |
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities |  |
Amortized Cost | 409,000,000 | 548,000,000
Gross unrealized gains | 107,000,000 | 97,000,000
Gross unrealized losses | 11,000,000 | 30,000,000
Allowance for Credit Losses | 1,000,000 |
Fair Value | $ 504,000,000 | $ 615,000,000

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