Changes in DAC and VOBA, ASU 2018-12 Transition (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Variable Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost	$ 2,217	$ 2,414	$ 2,614		$ 2,786
Present Value of Future Insurance Profits, Net	309	341	377		428
Variable Annuities | Accounting Standards Update 2018-12
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				$ 2,786
Present Value of Future Insurance Profits, Net				428
Variable Annuities | Accounting Standards Update 2018-12 | Previously Reported
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost					2,326
Present Value of Future Insurance Profits, Net					363
Variable Annuities | AOCI Attributable to Parent | Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				460
Present Value of Future Insurance Profits, Net				65
Fixed Rate Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost	110	107	88		64
Present Value of Future Insurance Profits, Net	59	65	70		76
Fixed Rate Annuities | Accounting Standards Update 2018-12
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				64
Present Value of Future Insurance Profits, Net				76
Fixed Rate Annuities | Accounting Standards Update 2018-12 | Previously Reported
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost					64
Present Value of Future Insurance Profits, Net					76
Fixed Rate Annuities | AOCI Attributable to Parent | Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				0
Present Value of Future Insurance Profits, Net				0
Index-linked Annuities
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost	1,332	1,213	1,081		886
Present Value of Future Insurance Profits, Net	0	0	0		0
Index-linked Annuities | Accounting Standards Update 2018-12
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				886
Present Value of Future Insurance Profits, Net				0
Index-linked Annuities | Accounting Standards Update 2018-12 | Previously Reported
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost					886
Present Value of Future Insurance Profits, Net					0
Index-linked Annuities | AOCI Attributable to Parent | Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				0
Present Value of Future Insurance Profits, Net				0
Term and Whole Life Insurance
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost	306	347	397		451
Present Value of Future Insurance Profits, Net	4	5	6		8
Term and Whole Life Insurance | Accounting Standards Update 2018-12
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				451
Present Value of Future Insurance Profits, Net				8
Term and Whole Life Insurance | Accounting Standards Update 2018-12 | Previously Reported
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost					451
Present Value of Future Insurance Profits, Net					8
Term and Whole Life Insurance | AOCI Attributable to Parent | Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				0
Present Value of Future Insurance Profits, Net				0
Universal Life Insurance
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost	119	115	114		107
Present Value of Future Insurance Profits, Net	$ 31	$ 35	$ 39		44
Universal Life Insurance | Accounting Standards Update 2018-12
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				107
Present Value of Future Insurance Profits, Net				44
Universal Life Insurance | Accounting Standards Update 2018-12 | Previously Reported
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost					144
Present Value of Future Insurance Profits, Net					$ 38
Universal Life Insurance | AOCI Attributable to Parent | Accounting Standards Update 2018-12 | Revision of Prior Period, Accounting Standards Update, Adjustment
Deferred Policy Acquisition Cost and Present Value of Future Profit [Line Items]
Deferred Policy Acquisition Cost				(37)
Present Value of Future Insurance Profits, Net				$ 6