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Asset Management Fees - Asset Management Fees (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Asset management fees	$ 26	$ 34
CLOs
Disaggregation of Revenue [Line Items]
Asset management fees	8	9
Opportunity funds and liquid strategies
Disaggregation of Revenue [Line Items]
Asset management fees	3	4
Wind-down funds
Disaggregation of Revenue [Line Items]
Asset management fees	0	1
Asset Management Fees, CLO's
Disaggregation of Revenue [Line Items]
Asset management fees	11	14
Performance fees
Disaggregation of Revenue [Line Items]
Asset management fees	12	14
Reimbursable fund expenses
Disaggregation of Revenue [Line Items]
Asset management fees	$ 3	$ 6

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