Investments - Fair Value and Gross Unrealized Losses in a Continuous Unrealized Loss Position (Details) security in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) security	Dec. 31, 2024 USD ($) security
Fair Value
Less Than or Equal to Twelve Months	$ 22,143	$ 30,166
Greater Than Twelve Months	37,525	36,345
Total	59,668	66,511
Gross Unrealized Losses
Less Than or Equal to Twelve Months	3,658	4,537
Greater Than Twelve Months	5,341	6,468
Total	$ 8,999	$ 11,005
Total number of fixed maturity AFS securities in an unrealized loss position | security	6,089	6,985
Unrealized holding losses arising during the period	$ 12	$ 23
Corporate bonds
Fair Value
Less Than or Equal to Twelve Months	16,727	24,657
Greater Than Twelve Months	31,404	29,786
Total	48,131	54,443
Gross Unrealized Losses
Less Than or Equal to Twelve Months	3,366	4,054
Greater Than Twelve Months	4,688	5,601
Total	8,054	9,655
U.S. government bonds
Fair Value
Less Than or Equal to Twelve Months	427	86
Greater Than Twelve Months	36	224
Total	463	310
Gross Unrealized Losses
Less Than or Equal to Twelve Months	27	3
Greater Than Twelve Months	5	38
Total	32	41
State and municipal bonds
Fair Value
Less Than or Equal to Twelve Months	582	1,087
Greater Than Twelve Months	995	760
Total	1,577	1,847
Gross Unrealized Losses
Less Than or Equal to Twelve Months	166	228
Greater Than Twelve Months	219	217
Total	385	445
Foreign government bonds
Fair Value
Less Than or Equal to Twelve Months	10	32
Greater Than Twelve Months	135	118
Total	145	150
Gross Unrealized Losses
Less Than or Equal to Twelve Months	2	5
Greater Than Twelve Months	49	51
Total	51	56
RMBS
Fair Value
Less Than or Equal to Twelve Months	345	795
Greater Than Twelve Months	838	760
Total	1,183	1,555
Gross Unrealized Losses
Less Than or Equal to Twelve Months	39	76
Greater Than Twelve Months	115	144
Total	154	220
CMBS
Fair Value
Less Than or Equal to Twelve Months	577	579
Greater Than Twelve Months	956	777
Total	1,533	1,356
Gross Unrealized Losses
Less Than or Equal to Twelve Months	19	50
Greater Than Twelve Months	80	106
Total	99	156
ABS
Fair Value
Less Than or Equal to Twelve Months	3,453	2,907
Greater Than Twelve Months	3,107	3,827
Total	6,560	6,734
Gross Unrealized Losses
Less Than or Equal to Twelve Months	37	118
Greater Than Twelve Months	180	303
Total	217	421
Hybrid and redeemable preferred securities
Fair Value
Less Than or Equal to Twelve Months	22	23
Greater Than Twelve Months	54	93
Total	76	116
Gross Unrealized Losses
Less Than or Equal to Twelve Months	2	3
Greater Than Twelve Months	5	8
Total	$ 7	$ 11