Loans and Allowance for Credit Losses - Net Loans (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 36,113	$ 32,532
Allowance for credit losses	(97)	(87)
Loans, net of allowance	36,016	32,445
Geographic Distribution, Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	22,281	22,114
Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	13,832	10,418
Fund Finance \| Geographic Distribution, Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	12,094	12,396
Fund Finance \| Geographic Distribution, Domestic \| Private Equity Capital Call Finance Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	7,690	9,150
Fund Finance \| Geographic Distribution, Domestic \| Real Money Funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	6,570	6,400
Fund Finance \| Geographic Distribution, Domestic \| Collateralized Loan Obligations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	4,250	2,910
Fund Finance \| Geographic Distribution, Domestic \| Business Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,100	1,390
Fund Finance \| Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	8,454	7,778
Leveraged loans \| Geographic Distribution, Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,346	3,106
Leveraged loans \| Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,006	1,328
Overdrafts \| Geographic Distribution, Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,787	1,796
Overdrafts \| Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	4,372	1,312
Other \| Securities Finance Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,730	1,780
Other \| Municipal Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	389	455
Other \| Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	19	23
Other \| Geographic Distribution, Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,133	2,262
Commercial real estate \| Geographic Distribution, Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 2,921	$ 2,554

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 3B
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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