Variable Interest Entities - Changes in Level 3 Assets (Details) - Consolidated investment entities - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Syndicated loans
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		$ 92	$ 143	$ 226
Total gains (losses) included in Net income	[1]	2	(16)	(2)
Purchases		106	111	91
Sales		(38)	(29)	(11)
Settlements		(49)	(33)	(68)
Transfers into Level 3		119	438	272
Transfers out of Level 3		(150)	(522)	(365)
Deconsolidation of consolidated investment entities		(18)
Balance, ending		64	92	143
Changes in unrealized gains (losses) in net income relating to assets held at end of period	[1]		(2)	(3)
Other assets
Summary of changes in Level 3 assets measured at fair value on a recurring basis
Balance, beginning		2	0
Total gains (losses) included in Net income	[1]	1
Purchases			2
Transfers into Level 3		2
Transfers out of Level 3		(2)
Balance, ending		3	$ 2	$ 0
Changes in unrealized gains (losses) in net income relating to assets held at end of period	[1]	$ 1

[1] Included in Net investment income.