Fair Value [Line Items]

No definition available.

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- Definition

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings And Other Comprehensive Income

+ References

No definition available.

+ Details

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- Definition

This element represents total net realized gains or losses for the period, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings.

+ References

No definition available.

+ Details

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- Definition

This element represents total net unrealized gains or losses for the period relating to instruments still held at the reporting date, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings and other comprehensive income.

+ References

No definition available.

+ Details

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- Definition

Total contractual amount of unfunded commitments for which the fair value option was elected.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Fair value of unfunded commitments for which the fair value option was elected.

+ References

No definition available.

+ Details

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- Definition

Other Secured Financing, Measurement Input.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

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- Definition

Amount of gain (loss) recognized in other comprehensive income (OCI) from liability measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

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- Definition

This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of long-term debt instruments that have contractual principal amounts and for which the fair value option has been elected.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612

+ Details

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- Definition

This item represents the estimated amount of gains or losses included in earnings during the period attributable to changes in instrument-specific credit risk arising from loans and other receivables held as assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612

+ Details

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Fair Value Option - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) yr	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) yr	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) yr
Fair Value [Line Items]
Total contractual amount of unfunded commitments for which the fair value option was elected	$ 808		$ 808		$ 1,640
Net Gains (Losses) Attributable to the Impact of Changes in Instrument-Specific Credit Spreads on Loans and Lending Commitments For Which the Fair Value Option Was Elected	71	$ (30)	203	$ (224)
Unsecured Long-Term Borrowings at Fair Value [Member]
Fair Value [Line Items]
Difference between aggregate contractual principal amount of long-term debt instruments for which the fair value option was elected and related fair value	$ 298		$ 298		$ 445
Minimum [Member] \| Other Secured Financings at Fair Value [Member] \| Level 3 [Member] \| Fair Value Unobservable Inputs, Yield [Member]
Fair Value [Line Items]
Other secured financing measurement input	0.014		0.014		0.014
Minimum [Member] \| Other Secured Financings at Fair Value [Member] \| Level 3 [Member] \| Fair Value Unobservable Inputs, Duration [Member]
Fair Value [Line Items]
Other secured financing measurement input \| yr	1.1		1.1		1.4
Maximum [Member] \| Other Secured Financings at Fair Value [Member] \| Level 3 [Member] \| Fair Value Unobservable Inputs, Yield [Member]
Fair Value [Line Items]
Other secured financing measurement input	0.071		0.071		0.071
Maximum [Member] \| Other Secured Financings at Fair Value [Member] \| Level 3 [Member] \| Fair Value Unobservable Inputs, Duration [Member]
Fair Value [Line Items]
Other secured financing measurement input \| yr	7.5		7.5		8.0
Weighted Average [Member] \| Other Secured Financings at Fair Value [Member] \| Level 3 [Member] \| Fair Value Unobservable Inputs, Yield [Member]
Fair Value [Line Items]
Other secured financing measurement input	0.024		0.024		0.027
Weighted Average [Member] \| Other Secured Financings at Fair Value [Member] \| Level 3 [Member] \| Fair Value Unobservable Inputs, Duration [Member]
Fair Value [Line Items]
Other secured financing measurement input \| yr	4.1		4.1		4.0
Other Financial Liabilities [Member]
Fair Value [Line Items]
Gains/(Losses) on liabilities	$ (812)	(2,090)	$ (343)	(574)
Realized Gains/(Losses) on liabilities	(200)	(109)	(294)	(203)
Net Unrealized Gains / (Losses)	(612)	(1,977)	(49)	777
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(200)	(109)	(294)	(203)
Other Financial Liabilities [Member] \| Unsecured Long-Term Borrowings at Fair Value [Member]
Fair Value [Line Items]
Net Unrealized Gains / (Losses)	(314)	(1,132)	62	393
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(79)	(70)	(142)	(146)
Other Financial Liabilities [Member] \| Other Secured Financings at Fair Value [Member]
Fair Value [Line Items]
Net Unrealized Gains / (Losses)	(1)	(32)	35	26
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(9)	2	(6)	5
Other Financial Liabilities [Member] \| Debt Valuation Adjustment [Member]
Fair Value [Line Items]
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of comprehensive income	64	839	63	277
Other Financial Liabilities [Member] \| Market making [Member]
Fair Value [Line Items]
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(862)	1,240	(428)	247
Other Financial Liabilities [Member] \| Other Principal Transactions [Member]
Fair Value [Line Items]
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(10)	10	29	55
Other Financial Liabilities [Member] \| Interest Expense [Member]
Fair Value [Line Items]
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(4)	$ 2	(7)	$ (5)
Written Loan Commitment, Fair Value Option [Member]
Fair Value [Line Items]
Fair value of unfunded commitments for which the fair value option was elected	$ 7		$ 7		$ 25