Deferred Acquisition Costs and Deferred Sales Inducement Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balances of and changes in DAC
Beginning balance	$ 2,532	$ 2,698	$ 2,776
Capitalization of acquisition costs	280	228	291
Amortization	(184)	(177)	(165)
Amortization, impact of valuation assumptions review	60	(100)	(14)
Impact of change in net unrealized (gains) losses on securities	94	(117)	(175)
Disposal of business			(15)
Ending balance	2,782	2,532	2,698
Balances of and changes in DSIC
Beginning balance	189	218	251
Capitalization of sales inducement costs	1	1	1
Amortization, excluding the impact of valuation assumptions review	(16)	(13)	(15)
Amortization, impact of valuation assumptions review	2	(16)
Impact of change in net unrealized (gains) losses on securities	13	(1)	(19)
Ending balance	$ 189	$ 189	$ 218