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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 1,777			$ 1,790			$ 3,654	$ 4,181
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale	2,300			(2,108)			1,272	(2,034)
Net unrealized gains (losses) on hedging relationships	1,069			(259)			677	(282)
Foreign currency translation adjustments	45			(39)			31	8
Other	0			0			1	0
Other comprehensive income (loss), net of tax	3,414			(2,406)			1,981	(2,308)
Comprehensive income (loss)	$ 5,191	$ 430	$ 14	$ (616)	$ 153	$ 2,336	$ 5,635	$ 1,873

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