Deferred Policy Acquisition Costs - Life Deferred Acquisition Costs Rollforward by Product (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Movement Analysis of Deferred Policy Acquisition Costs
Deferred policy acquisition costs asset, beginning of period	$ 1,013	$ 916
Capitalized deferred policy acquisition costs	383	376
Amortized deferred policy acquisition costs	(348)	(308)
Deferred policy acquisition costs asset, end of period	1,048	984
Term Life Insurance
Movement Analysis of Deferred Policy Acquisition Costs
Deferred policy acquisition costs asset, beginning of period	228	215
Capitalized deferred policy acquisition costs	9	10
Amortized deferred policy acquisition costs	(6)	(5)
Deferred policy acquisition costs asset, end of period	231	220
Whole Life Insurance
Movement Analysis of Deferred Policy Acquisition Costs
Deferred policy acquisition costs asset, beginning of period	43	38
Capitalized deferred policy acquisition costs	2	2
Amortized deferred policy acquisition costs	(1)	(1)
Deferred policy acquisition costs asset, end of period	44	39
Deferred Fixed Annuity
Movement Analysis of Deferred Policy Acquisition Costs
Deferred policy acquisition costs asset, beginning of period	7	7
Capitalized deferred policy acquisition costs	0	0
Amortized deferred policy acquisition costs	0	0
Deferred policy acquisition costs asset, end of period	7	7
Universal life
Movement Analysis of Deferred Policy Acquisition Costs
Deferred policy acquisition costs asset, beginning of period	53	54
Capitalized deferred policy acquisition costs	0	0
Amortized deferred policy acquisition costs	(1)	(1)
Deferred policy acquisition costs asset, end of period	52	53
Life Insurance Segment
Movement Analysis of Deferred Policy Acquisition Costs
Deferred policy acquisition costs asset, beginning of period	331	314
Capitalized deferred policy acquisition costs	11	12
Amortized deferred policy acquisition costs	(8)	(7)
Deferred policy acquisition costs asset, end of period	$ 334	$ 319