Loans and Allowance for Credit Losses - Activity in the Allowance for Credit Losses for Loans Held for Investment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 87
Provision for credit losses	20	$ (33)	$ 88
Ending balance	97	87
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
AFS allowance, beginning balance	2	0
AFS, charge-offs	0	0
AFS, provision	0	2
AFS, FX translation		0
AFS allowance, ending balance	2	2	0
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
HTM, allowance beginning balance	0	3
HTM, charge-offs	0	0
HTM, provision	0	(3)
HTM, FX translation		0
HTM, allowance, ending balance	0	0	3
Leveraged Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	61	97
Charge-offs	(6)	(2)
Provision for credit losses	18	(29)
FX translation		(5)
Ending balance	73	61	97
Other Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	12	17
Charge-offs	0	0
Provision for credit losses	(7)	(6)
FX translation		1
Ending balance	5	12	17
Other Loans | Fund Finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	11
Ending balance	3	11
Other Loans | Other Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1
Ending balance	2	1
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	14	8
Charge-offs	0	0
Provision for credit losses	5	6
FX translation		0
Ending balance	19	14	8
Off-Balance Sheet Commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	19	22
Charge-offs	0	0
Provision for credit losses	4	(2)
FX translation		(1)
Ending balance	23	19	22
All Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0	1
Charge-offs	(1)	0
Provision for credit losses	0	(1)
FX translation		0
Ending balance	(1)	0	1
Total Credit Reserve
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	108	148
Charge-offs	(7)	(2)
Provision for credit losses	20	(33)
FX translation		(5)
Ending balance	$ 121	$ 108	$ 148