The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Noninterest Revenue and Noninterest Expense - Narrative (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
	Jan. 31, 2025	Sep. 30, 2026	Jun. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Schedule of Noninterest revenue [Line Items]
Gains on certain equity investments			$ 1,000
Payment related to business acquisition	$ 609
First Republic-related gain	$ 588	$ 0		$ 0	$ 0	$ 628
Corporate
Schedule of Noninterest revenue [Line Items]
Gains on certain equity investments			763
Operating Segments \| CIB
Schedule of Noninterest revenue [Line Items]
Gains on certain equity investments			$ 263