Loans and Allowance for Credit Losses - Activity in the Allowance for Credit Losses for Loans Held for Investment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			$ 87
Ending balance	$ 97		97
Leveraged Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	69	$ 74	61	$ 97
Charge-offs	0	(1)	(4)	(2)
Provision	6	(4)	18	(24)
Foreign currency translation		(1)		(3)
Ending balance	75	68	75	68
Other Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	10	12	12	17
Charge-offs	0	0	0	0
Provision	(5)	0	(7)	(5)
Foreign currency translation		0		0
Ending balance	5	12	5	12
Other Loans | Fund Finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance	4	11	4	11
Other Loans | Other Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance	1	1	1	1
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	16	14	14	8
Charge-offs	0	0	0	0
Provision	2	1	4	7
Foreign currency translation		0		0
Ending balance	18	15	18	15
Available-for-sale Securities
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2		2
Charge-offs	0		0
Provision	(1)		(1)
Ending balance	1		1
Held-to-Maturity Securities
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		2		3
Charge-offs		0		0
Provision		0		(1)
Foreign currency translation		0		0
Ending balance		2		2
Off-Balance Sheet Commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	17	19	19	22
Charge-offs	0	0	0	0
Provision	(2)	1	(4)	(2)
Foreign currency translation		0		0
Ending balance	15	20	15	20
All Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0	0	0	1
Charge-offs	0	0	0	0
Provision	0	0	0	(1)
Foreign currency translation		0		0
Ending balance	0	0	0	0
Total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	114	121	108	148
Charge-offs	0	(1)	(4)	(2)
Provision	0	(2)	10	(26)
Foreign currency translation		(1)		(3)
Ending balance	$ 114	$ 117	$ 114	$ 117