Investments (Fair Value And Gross Unrealized Losses In A Continuous Unrealized Loss Position) (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 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	7,065	2,577
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	$ 68,421	$ 16,570
Greater Than Twelve Months	4,507	1,781
Fair Value - Total	72,928	18,351
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	7,196	308
Greater Than Twelve Months	1,022	119
Gross Unrealized Losses - Total	8,218	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	5	8
Corporate Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	55,939	10,611
Greater Than Twelve Months	2,974	1,386
Fair Value - Total	58,913	11,997
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	6,139	230
Greater Than Twelve Months	831	96
Gross Unrealized Losses - Total	6,970	326
U.S. Government Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	227	6
Greater Than Twelve Months	23	26
Fair Value - Total	250	32
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	9
Greater Than Twelve Months	5	2
Gross Unrealized Losses - Total	14	2
State And Municipal Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	1,749	498
Greater Than Twelve Months	61	19
Fair Value - Total	1,810	517
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	283	10
Greater Than Twelve Months	18	1
Gross Unrealized Losses - Total	301	11
Foreign Government Bonds [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	81	61
Greater Than Twelve Months	74	56
Fair Value - Total	155	117
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	20	3
Greater Than Twelve Months	18	2
Gross Unrealized Losses - Total	38	5
RMBS [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	1,229	261
Greater Than Twelve Months	28	20
Fair Value - Total	1,257	281
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	96	3
Greater Than Twelve Months	4	1
Gross Unrealized Losses - Total	100	4
CMBS [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	1,289	440
Greater Than Twelve Months	205	33
Fair Value - Total	1,494	473
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	110	12
Greater Than Twelve Months	41	2
Gross Unrealized Losses - Total	151	14
ABS [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	7,773	4,646
Greater Than Twelve Months	1,077	165
Fair Value - Total	8,850	4,811
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	526	49
Greater Than Twelve Months	83	5
Gross Unrealized Losses - Total	609	54
Hybrid And Redeemable Preferred Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
Less Than or Equal to Twelve Months	134	47
Greater Than Twelve Months	65	76
Fair Value - Total	199	123
Available-for-sale Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses and OTTI
Less Than or Equal to Twelve Months	13	1
Greater Than Twelve Months	22	10
Gross Unrealized Losses - Total	$ 35	$ 11