Managed Investment Entities - Progression of investment in CLO tranches (Details) - Variable interest entity, primary beneficiary - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Investment in CLO tranches, beginning balance	$ 76
Investment in CLO tranches, ending balance	76
Continuing operations
Variable Interest Entity [Line Items]
Investment in CLO tranches, beginning balance	76	$ 57	$ 48	$ 55
Face amount of managed investment entities liabilities purchased during the period	21	17	0
Sales of managed investment entities liabilities	0	(1)	0
Distributions from managed investment entities liabilities	(22)	(6)	(8)
Mark-to-market of ownership of managed investment entities liabilities	20	(1)	1
Investment in CLO tranches, ending balance	$ 76	$ 57	$ 48