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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Investments (Reconciliation Of Available-For-Sale Securities From Cost Basis To Fair Value) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	$ 111,058		$ 105,177
Gross unrealized gains	912		14,039
Gross unrealized losses	14,380		451
Allowance for Credit Losses	18	$ 12	19	$ 17	$ 9	$ 13
Fair Value	97,572		118,746
Corporate Bonds [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	89,112		86,373
Gross unrealized gains	611		12,113
Gross unrealized losses	12,270		349
Allowance for Credit Losses	7	7	17	16	8	12
Fair Value	77,446		98,120
U.S. Government Bonds [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	410		375
Gross unrealized gains	6		60
Gross unrealized losses	32		2
Fair Value	384		433
State And Municipal Bonds [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	5,412		5,322
Gross unrealized gains	188		1,311
Gross unrealized losses	511		12
Fair Value	5,089		6,621
Foreign Government Bonds [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	377		373
Gross unrealized gains	16		64
Gross unrealized losses	55		5
Fair Value	338		432
RMBS [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	2,244		2,334
Gross unrealized gains	28		196
Gross unrealized losses	219		4
Allowance for Credit Losses	5	$ 3	1	$ 1	$ 1	$ 1
Fair Value	2,048		2,525
CMBS [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	1,789		1,552
Gross unrealized gains			61
Gross unrealized losses	240		14
Fair Value	1,549		1,599
ABS [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	11,341		8,439
Gross unrealized gains	34		127
Gross unrealized losses	1,023		54
Allowance for Credit Losses	5
Fair Value	10,347		8,512
Hybrid And Redeemable Preferred Securities [Member]
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities
Amortized Cost	373		409
Gross unrealized gains	29		107
Gross unrealized losses	30		11
Allowance for Credit Losses	1		1
Fair Value	$ 371		$ 504