Asset Management Fees - Asset Management Fees (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Asset management fees	$ 21	$ 21	$ 55	$ 45
CLOs
Disaggregation of Revenue [Line Items]
Asset management fees	8	11	17	22
Opportunity funds and liquid strategies
Disaggregation of Revenue [Line Items]
Asset management fees	8	4	12	8
Wind-down funds
Disaggregation of Revenue [Line Items]
Asset management fees	0	1	1	4
Total management fees
Disaggregation of Revenue [Line Items]
Asset management fees	16	16	30	34
Performance fees
Disaggregation of Revenue [Line Items]
Asset management fees	1	0	15	1
Reimbursable fund expenses
Disaggregation of Revenue [Line Items]
Asset management fees	4	5	10	10
CLO's, Before Rebates
Disaggregation of Revenue [Line Items]
Asset management fees	$ 8	$ 11	$ 17	$ 25