Insurance ( Liabilities Guarantees) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	$ 13,070	$ 12,450	$ 10,261
Incurred guaranteed benefits	1,435	972	2,461
Paid guaranteed benefits	(494)	(352)	(272)
Balance at December 31,	14,011	13,070	12,450
Variable Annuity Guarantees | Guaranteed Minimum Death Benefit
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	1,838	1,621	1,596
Incurred guaranteed benefits	525	294	128
Paid guaranteed benefits	(60)	(77)	(103)
Balance at December 31,	2,303	1,838	1,621
Variable Annuity Guarantees | Guaranteed Minimum Income Benefit
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	4,157	4,165	3,076
Incurred guaranteed benefits	647	(8)	1,089
Paid guaranteed benefits	0	0	0
Balance at December 31,	4,804	4,157	4,165
Universal and Variable Life Contracts | Secondary Guarantees
Movement In Guaranteed Benefit Liability Gross Rollforward
Balance at January 1,	7,075	6,664	5,589
Incurred guaranteed benefits	263	686	1,244
Paid guaranteed benefits	(434)	(275)	(169)
Balance at December 31,	6,904	7,075	6,664
Net Ceded and Assumed Liabilities For Guarantees
Movement In Guaranteed Benefit Liability Gross Rollforward
Paid guaranteed benefits	(113)	(114)	(140)
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	1,209	1,116	1,053	$ 1,017
Liabilities for Guarantees on Long Duration contracts reinsurance recoverable incurred benefits net	206	177	176
Net Ceded and Assumed Liabilities For Guarantees | Secondary Guarantees
Movement In Guaranteed Benefit Liability Gross Rollforward
Paid guaranteed benefits	(76)	(39)	(39)
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	1,312	1,207	1,146	1,083
Liabilities for Guarantees on Long Duration contracts reinsurance recoverable incurred benefits net	181	100	102
Net Ceded and Assumed Liabilities For Guarantees | Guaranteed Minimum Death Benefit
Movement In Guaranteed Benefit Liability Gross Rollforward
Paid guaranteed benefits	(37)	(75)	(101)
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	(32)	(26)	(21)	(15)
Liabilities for Guarantees on Long Duration contracts reinsurance recoverable incurred benefits net	31	70	95
Net Ceded and Assumed Liabilities For Guarantees | Guaranteed Minimum Income Benefit
Movement In Guaranteed Benefit Liability Gross Rollforward
Paid guaranteed benefits	0	0	0
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	(71)	(65)	(72)	(51)
Liabilities for Guarantees on Long Duration contracts reinsurance recoverable incurred benefits net	(6)	7	(21)
Net Liabilities For Guarantees
Movement In Guaranteed Benefit Liability Gross Rollforward
Incurred guaranteed benefits	1,229	795	2,285
Paid guaranteed benefits	(381)	(238)	(132)
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	12,802	11,954	11,397	9,244
Net Liabilities For Guarantees | Secondary Guarantees
Movement In Guaranteed Benefit Liability Gross Rollforward
Incurred guaranteed benefits	82	586	1,142
Paid guaranteed benefits	(358)	(236)	(130)
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	5,592	5,868	5,518	4,506
Net Liabilities For Guarantees | Guaranteed Minimum Death Benefit
Movement In Guaranteed Benefit Liability Gross Rollforward
Incurred guaranteed benefits	494	224	33
Paid guaranteed benefits	(23)	(2)	(2)
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	2,335	1,864	1,642	1,611
Net Liabilities For Guarantees | Guaranteed Minimum Income Benefit
Movement In Guaranteed Benefit Liability Gross Rollforward
Incurred guaranteed benefits	653	(15)	1,110
Paid guaranteed benefits	0	0	0
Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Net	$ 4,875	$ 4,222	$ 4,237	$ 3,127