Deferred Acquisition Costs and Deferred Sales Inducement Costs - Deferred Acquisition Costs (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2023		Dec. 31, 2022		Dec. 31, 2021
Balances of and changes in DAC
Beginning balance	$ 2,777	[1]	$ 2,844
Ending balance	2,725		2,777	[1]	$ 2,844
Variable Annuities
Balances of and changes in DAC
Beginning balance	1,598		1,696		1,732
Capitalization of acquisition costs	17		38		111
Amortization	(96)		(136)		(147)
Ending balance	1,519		1,598		1,696
Structured Variable Annuities
Balances of and changes in DAC
Beginning balance	149		91		26
Capitalization of acquisition costs	61		73		71
Amortization	(18)		(15)		(6)
Ending balance	192		149		91
Fixed Annuities
Balances of and changes in DAC
Beginning balance	45		53		61
Capitalization of acquisition costs	0		0		0
Amortization	(8)		(8)		(8)
Ending balance	37		45		53
Fixed Indexed Annuities
Balances of and changes in DAC
Beginning balance	6		7		8
Capitalization of acquisition costs	0		0		0
Amortization	(1)		(1)		(1)
Ending balance	5		6		7
Universal Life Insurance
Balances of and changes in DAC
Beginning balance	118		125		131
Capitalization of acquisition costs	0		1		3
Amortization	(6)		(8)		(9)
Ending balance	112		118		125
Variable Universal Life Insurance
Balances of and changes in DAC
Beginning balance	521		512		505
Capitalization of acquisition costs	41		55		54
Amortization	(33)		(46)		(47)
Ending balance	529		521		512
Indexed Universal Life Insurance
Balances of and changes in DAC
Beginning balance	236		248		257
Capitalization of acquisition costs	3		5		9
Amortization	(12)		(17)		(18)
Ending balance	227		236		248
Other Life Insurance
Balances of and changes in DAC
Beginning balance	3		3		3
Capitalization of acquisition costs	0		0		0
Amortization	0		0		0
Ending balance	3		3		3
Life Contingent Payout Annuities
Balances of and changes in DAC
Beginning balance	2		1		0
Capitalization of acquisition costs	3		1		1
Amortization	0		0		0
Ending balance	5		2		1
Term and Whole Life Insurance
Balances of and changes in DAC
Beginning balance	18		19		19
Capitalization of acquisition costs	1		1		2
Amortization	(1)		(2)		(2)
Ending balance	18		18		19
Disability Insurance
Balances of and changes in DAC
Beginning balance	79		84		89
Capitalization of acquisition costs	3		4		4
Amortization	(6)		(9)		(9)
Ending balance	76		79		84
Total, All Products
Balances of and changes in DAC
Beginning balance	2,775		2,839		2,831
Capitalization of acquisition costs	129		178		255
Amortization	(181)		(242)		(247)
Ending balance	2,723		2,775		2,839
Other broker dealer acquisition costs
Balances of and changes in DAC
Beginning balance	2		5
Ending balance	2		2		5
Previously Reported
Balances of and changes in DAC
Beginning balance	3,160		2,782
Ending balance			3,160		2,782
Previously Reported | Variable Annuities
Balances of and changes in DAC
Beginning balance					1,690
Previously Reported | Structured Variable Annuities
Balances of and changes in DAC
Beginning balance					22
Previously Reported | Fixed Annuities
Balances of and changes in DAC
Beginning balance					43
Previously Reported | Fixed Indexed Annuities
Balances of and changes in DAC
Beginning balance					7
Previously Reported | Universal Life Insurance
Balances of and changes in DAC
Beginning balance					100
Previously Reported | Variable Universal Life Insurance
Balances of and changes in DAC
Beginning balance					452
Previously Reported | Indexed Universal Life Insurance
Balances of and changes in DAC
Beginning balance					108
Previously Reported | Other Life Insurance
Balances of and changes in DAC
Beginning balance					(3)
Previously Reported | Life Contingent Payout Annuities
Balances of and changes in DAC
Beginning balance					0
Previously Reported | Term and Whole Life Insurance
Balances of and changes in DAC
Beginning balance					19
Previously Reported | Disability Insurance
Balances of and changes in DAC
Beginning balance					89
Previously Reported | Total, All Products
Balances of and changes in DAC
Beginning balance					2,527
Effect of shadow reserve adjustments
Balances of and changes in DAC
Beginning balance	$ (383)		62
Ending balance			$ (383)		62
Effect of shadow reserve adjustments | Variable Annuities
Balances of and changes in DAC
Beginning balance					42
Effect of shadow reserve adjustments | Structured Variable Annuities
Balances of and changes in DAC
Beginning balance					4
Effect of shadow reserve adjustments | Fixed Annuities
Balances of and changes in DAC
Beginning balance					18
Effect of shadow reserve adjustments | Fixed Indexed Annuities
Balances of and changes in DAC
Beginning balance					1
Effect of shadow reserve adjustments | Universal Life Insurance
Balances of and changes in DAC
Beginning balance					31
Effect of shadow reserve adjustments | Variable Universal Life Insurance
Balances of and changes in DAC
Beginning balance					53
Effect of shadow reserve adjustments | Indexed Universal Life Insurance
Balances of and changes in DAC
Beginning balance					149
Effect of shadow reserve adjustments | Other Life Insurance
Balances of and changes in DAC
Beginning balance					6
Effect of shadow reserve adjustments | Life Contingent Payout Annuities
Balances of and changes in DAC
Beginning balance					0
Effect of shadow reserve adjustments | Term and Whole Life Insurance
Balances of and changes in DAC
Beginning balance					0
Effect of shadow reserve adjustments | Disability Insurance
Balances of and changes in DAC
Beginning balance					0
Effect of shadow reserve adjustments | Total, All Products
Balances of and changes in DAC
Beginning balance					$ 304

[1] Certain prior period amounts have been restated. See Note 3 for more information.