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Fair Value Option - Gains (Losses) Due to Changes in Instrument-Specific Credit Risk (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Fair Value disclosure
Cumulative pre-tax DVA gain (loss) recognized in AOCI	$ (3,773)		$ (3,773)		$ (2,868)
Loans and other receivables | OCI
Fair Value disclosure
Gains (losses) due to changes in instrument-specific credit risk	0	$ 0	0	$ 0
Loans and other receivables | Trading Revenues
Fair Value disclosure
Gains (losses) due to changes in instrument-specific credit risk	46	(15)	(5)	(13)
Lending commitments | OCI
Fair Value disclosure
Gains (losses) due to changes in instrument-specific credit risk	0	0	0	0
Lending commitments | Trading Revenues
Fair Value disclosure
Gains (losses) due to changes in instrument-specific credit risk	(1)	(3)	(3)	(4)
Deposits | OCI
Fair Value disclosure
Gains (losses) due to changes in instrument-specific credit risk	(27)	(3)	38	8
Deposits | Trading Revenues
Fair Value disclosure
Gains (losses) due to changes in instrument-specific credit risk	0	0	0	0
Borrowings | OCI
Fair Value disclosure
Gains (losses) due to changes in instrument-specific credit risk	(1,093)	(227)	(943)	(617)
Borrowings | Trading Revenues
Fair Value disclosure
Gains (losses) due to changes in instrument-specific credit risk	$ (5)	$ (4)	$ (17)	$ (21)

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- Definition

Amount of unrealized gain (loss) related to debt valuation adjustment, which was recorded in accumulated other comprehensive income.

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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://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-30

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