Loans and Allowance for Credit Losses - Net Loans (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 46,782	$ 43,200
Allowance for credit losses	(193)	(174)
Loans, net of allowance for credit losses	46,589	43,026
Floating rate loans	42,370
Fixed rate loans	2,450
Foreign
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	18,780	16,790
Subscription finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	13,138	11,544
Fund finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	10,916	10,244
Allowance for credit losses		(2)
Real money funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	8,300	7,900
Business development companies
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,750	1,440
Collateralized loan obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	12,809	9,488
Broadly syndicated CLOs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	10,300	8,390
Middle market CLOs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,510	1,100
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,851	3,881
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,471	2,842
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,962	1,980
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,635	3,221
Allowance for credit losses		(1)
Securities Finance Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,520	3,010
Municipal Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 120	$ 210

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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