Loans - Purchased, Sold and Reclassified to Held-for-Sale (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
Purchases	$ 2,452	$ 2,079	$ 152,505
Sales	55,583	55,587	46,151
Retained loans reclassified to held-for-sale	1,552	2,405	1,760
Consumer, excluding credit card
Loans and Leases Receivable Disclosure [Line Items]
Purchases	756	647	92,205
Sales	3,006	10,440	2,202
Retained loans reclassified to held-for-sale	332	1,656	274
Excluded purchases of retained loans predominantly sourced through the correspondent origination channel and underwritten in accordance with Firm standards	3,700	902	5,100
Consumer, excluding credit card | First Republic
Loans and Leases Receivable Disclosure [Line Items]
Purchases			91,900
Credit card
Loans and Leases Receivable Disclosure [Line Items]
Purchases	0	0	0
Sales	0	0	0
Retained loans reclassified to held-for-sale	0	0	0
Wholesale
Loans and Leases Receivable Disclosure [Line Items]
Purchases	1,696	1,432	60,300
Sales	52,577	45,147	43,949
Retained loans reclassified to held-for-sale	$ 1,220	$ 749	1,486
Wholesale | First Republic
Loans and Leases Receivable Disclosure [Line Items]
Purchases			$ 59,200