Reserves for Future Policy Benefits and Contract Owner Account Balances (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 32,917	$ 29,268
One America
Policyholder Account Balance [Line Items]
Deferrals of commissions and expenses	390
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance [Line Items]
Policyholder Account Balance	14,648	13,587
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance [Line Items]
Policyholder Account Balance	4,271	4,097
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0100
Policyholder Account Balance [Line Items]
Policyholder Account Balance	3,897	3,716
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0101 to 0150
Policyholder Account Balance [Line Items]
Policyholder Account Balance	2,212	1,692
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 to 0200
Policyholder Account Balance [Line Items]
Policyholder Account Balance	2,272	1,535
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0200 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	1,527	926
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0001 to 0100
Policyholder Account Balance [Line Items]
Policyholder Account Balance	13,893	11,835
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0001 to 0100 | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance [Line Items]
Policyholder Account Balance	63	8
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0001 to 0100 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance [Line Items]
Policyholder Account Balance	4,007	4,010
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0001 to 0100 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0100
Policyholder Account Balance [Line Items]
Policyholder Account Balance	3,852	3,671
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0001 to 0100 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0101 to 0150
Policyholder Account Balance [Line Items]
Policyholder Account Balance	2,175	1,688
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0001 to 0100 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 to 0200
Policyholder Account Balance [Line Items]
Policyholder Account Balance	2,270	1,533
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0001 to 0100 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0200 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	1,526	925
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0100 to 0199
Policyholder Account Balance [Line Items]
Policyholder Account Balance	227	215
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0100 to 0199 | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance [Line Items]
Policyholder Account Balance	123	110
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0100 to 0199 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance [Line Items]
Policyholder Account Balance	57	56
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0100 to 0199 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0100
Policyholder Account Balance [Line Items]
Policyholder Account Balance	43	44
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0100 to 0199 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0101 to 0150
Policyholder Account Balance [Line Items]
Policyholder Account Balance	3	4
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0100 to 0199 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 to 0200
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0100 to 0199 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0200 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	1	1
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299
Policyholder Account Balance [Line Items]
Policyholder Account Balance	6,180	5,865
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299 | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance [Line Items]
Policyholder Account Balance	5,937	5,833
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance [Line Items]
Policyholder Account Balance	207	31
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0100
Policyholder Account Balance [Line Items]
Policyholder Account Balance	2	1
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0101 to 0150
Policyholder Account Balance [Line Items]
Policyholder Account Balance	34	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 to 0200
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0200 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399
Policyholder Account Balance [Line Items]
Policyholder Account Balance	8,192	7,291
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance [Line Items]
Policyholder Account Balance	8,192	7,291
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0100
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0101 to 0150
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 to 0200
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0200 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	4	4
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance [Line Items]
Policyholder Account Balance	4	4
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0100
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0101 to 0150
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 to 0200
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and Greater | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0200 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Renewable Beyond 12 Months
Policyholder Account Balance [Line Items]
Policyholder Account Balance	331	343
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Renewable Beyond 12 Months | Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance [Line Items]
Policyholder Account Balance	329	341
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Renewable Beyond 12 Months | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Renewable Beyond 12 Months | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0100
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Renewable Beyond 12 Months | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0101 to 0150
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Renewable Beyond 12 Months | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 to 0200
Policyholder Account Balance [Line Items]
Policyholder Account Balance	2	2
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Renewable Beyond 12 Months | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0200 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Total discretionary rate setting products
Policyholder Account Balance [Line Items]
Policyholder Account Balance	28,827	25,553
Retirement
Policyholder Account Balance [Line Items]
Policyholder Account Balance	28,327	25,031	$ 25,991
Policyholder Account Balance, Premium Received	807	2,435
Policyholder Account Balance, Policy Charge	(15)	(50)
Policyholder Account Balance, Surrender and Withdrawal	(1,360)	(4,368)
Net transfers (from) to the general account	211	313
Transfer to (from) Policyholder Account Balance (to) from Separate Account	(512)	1,463
Policyholder Account Balance, Interest Expense	$ 195	$ 710
Policyholder Account Balance, Weighted Average Crediting Rate	2.80%	2.80%
Policyholder Account Balance, Net Amount at Risk	$ 62	$ 86
Policyholder Account Balance, Cash Surrender Value	27,977	24,669
Retirement | One America
Policyholder Account Balance [Line Items]
Deferrals of commissions and expenses	3,458
Retirement | VRIAC-managed institutional/mutual fund plan assets
Policyholder Account Balance [Line Items]
Transfer to (from) Policyholder Account Balance (to) from Separate Account	(301)	(1,150)
Other Segments
Policyholder Account Balance [Line Items]
Policyholder Account Balance	3,819	3,516
non-puttable funding agreement
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 771	$ 721