Investments (Fair Value And Gross Unrealized Losses In A Continuous Unrealized Loss Position) (Details) $ in Millions	21 Months Ended
	Sep. 30, 2022 USD ($) security	Dec. 31, 2021 USD ($) security
Schedule of Available-for-sale Securities [Line Items]
Total number of fixed maturity AFS securities in an unrealized loss position | security	8,051	2,577
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	$ 74,949	$ 16,570
Greater Than Twelve Months	5,535	1,781
Fair Value - Total	80,484	18,351
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	12,219	308
Greater Than Twelve Months	1,584	119
Gross Unrealized Losses - Total	13,803	427
Fixed Maturity AFS Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Unrealized holding gains (losses) arising during the period	8
Corporate Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	61,490	10,611
Greater Than Twelve Months	3,429	1,386
Fair Value - Total	64,919	11,997
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	10,502	230
Greater Than Twelve Months	1,244	96
Gross Unrealized Losses - Total	11,746	326
U.S. Government Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	244	6
Greater Than Twelve Months	22	26
Fair Value - Total	266	32
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	25
Greater Than Twelve Months	6	2
Gross Unrealized Losses - Total	31	2
State And Municipal Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	1,921	498
Greater Than Twelve Months	96	19
Fair Value - Total	2,017	517
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	445	10
Greater Than Twelve Months	36	1
Gross Unrealized Losses - Total	481	11
Foreign Government Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	123	61
Greater Than Twelve Months	76	56
Fair Value - Total	199	117
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	25	3
Greater Than Twelve Months	29	2
Gross Unrealized Losses - Total	54	5
RMBS [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	1,475	261
Greater Than Twelve Months	33	20
Fair Value - Total	1,508	281
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	193	3
Greater Than Twelve Months	7	1
Gross Unrealized Losses - Total	200	4
CMBS [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	1,315	440
Greater Than Twelve Months	216	33
Fair Value - Total	1,531	473
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	178	12
Greater Than Twelve Months	60	2
Gross Unrealized Losses - Total	238	14
ABS [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	8,286	4,646
Greater Than Twelve Months	1,596	165
Fair Value - Total	9,882	4,811
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	845	49
Greater Than Twelve Months	178	5
Gross Unrealized Losses - Total	1,023	54
Hybrid And Redeemable Preferred Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	95	47
Greater Than Twelve Months	67	76
Fair Value - Total	162	123
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	6	1
Greater Than Twelve Months	24	10
Gross Unrealized Losses - Total	$ 30	$ 11