Asset Management Fees - Asset Management Fees (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Asset management fees	$ 34	$ 24
CLOs
Disaggregation of Revenue [Line Items]
Asset management fees	9	11
Opportunity funds and liquid strategies
Disaggregation of Revenue [Line Items]
Asset management fees	4	4
Wind-down funds
Disaggregation of Revenue [Line Items]
Asset management fees	1	3
Total management fees
Disaggregation of Revenue [Line Items]
Asset management fees	14	18
Performance fees
Disaggregation of Revenue [Line Items]
Asset management fees	14	1
Reimbursable fund expenses
Disaggregation of Revenue [Line Items]
Asset management fees	6	5
CLO's, Before Rebates
Disaggregation of Revenue [Line Items]
Asset management fees	$ 9	$ 14