Quarterly report [Sections 13 or 15(d)]

Outstanding Loans and Leases and Allowance for Credit Losses - Credit Card and Other Consumer - Credit Quality Indicators (Details)

Outstanding Loans and Leases and Allowance for Credit Losses - Credit Card and Other Consumer - Credit Quality Indicators (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 1,205,035		$ 1,185,700
Total gross charge-offs	1,737	$ 1,733
Credit Card and Direct/ Indirect Consumer \| Direct/indirect consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Total	113,954		114,130
Revolving Loans	59,391		58,097
Originated in current fiscal year	5,183		22,723
Originated in fiscal year before current fiscal year	20,503		14,549
Originated two years before current fiscal year	13,000		8,936
Originated three years before current fiscal year	7,645		5,759
Originated four years before current fiscal year	4,843		2,569
Prior	3,389		1,497
Revolving Loans	59,391		58,097
Total gross charge-offs	105		373
Gross charge-offs, Revolving Loans	1		6
Gross charge-offs, Originated in current fiscal year	0		44
Gross charge-offs, Originated in fiscal year before current fiscal year	39		110
Gross charge-offs, Originated two years before current fiscal year	21		92
Gross charge-offs, Originated three years before current fiscal year	19		64
Gross charge-offs, Originated four years before current fiscal year	13		26
Gross charge-offs, Prior	12		31
Gross charge-offs, Revolving Loans	1		6
Loans and lease receivable, securities based lending	59,300		58,000
Credit Card and Direct/ Indirect Consumer \| Direct/indirect consumer \| Less than 620
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,538		1,560
Revolving Loans	7		8
Originated in current fiscal year	25		274
Originated in fiscal year before current fiscal year	348		386
Originated two years before current fiscal year	379		404
Originated three years before current fiscal year	370		306
Originated four years before current fiscal year	272		141
Prior	137		41
Revolving Loans	7		8
Credit Card and Direct/ Indirect Consumer \| Direct/indirect consumer \| Greater than or equal to 620 and less than 660
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,225		1,251
Revolving Loans	3		4
Originated in current fiscal year	68		352
Originated in fiscal year before current fiscal year	368		327
Originated two years before current fiscal year	294		266
Originated three years before current fiscal year	236		186
Originated four years before current fiscal year	167		85
Prior	89		31
Revolving Loans	3		4
Credit Card and Direct/ Indirect Consumer \| Direct/indirect consumer \| Greater than or equal to 660 and less than 740
Financing Receivable, Credit Quality Indicator [Line Items]
Total	8,917		9,117
Revolving Loans	33		37
Originated in current fiscal year	941		3,739
Originated in fiscal year before current fiscal year	3,345		2,236
Originated two years before current fiscal year	1,995		1,491
Originated three years before current fiscal year	1,278		986
Originated four years before current fiscal year	830		439
Prior	495		189
Revolving Loans	33		37
Credit Card and Direct/ Indirect Consumer \| Direct/indirect consumer \| Greater than or equal to 740
Financing Receivable, Credit Quality Indicator [Line Items]
Total	42,266		43,475
Revolving Loans	42		49
Originated in current fiscal year	4,087		18,136
Originated in fiscal year before current fiscal year	16,226		11,534
Originated two years before current fiscal year	10,272		6,744
Originated three years before current fiscal year	5,721		4,107
Originated four years before current fiscal year	3,505		1,865
Prior	2,413		1,040
Revolving Loans	42		49
Credit Card and Direct/ Indirect Consumer \| Direct/indirect consumer \| Other internal credit metrics
Financing Receivable, Credit Quality Indicator [Line Items]
Total	60,008		58,727
Revolving Loans	59,306		57,999
Originated in current fiscal year	62		222
Originated in fiscal year before current fiscal year	216		66
Originated two years before current fiscal year	60		31
Originated three years before current fiscal year	40		174
Originated four years before current fiscal year	69		39
Prior	255		196
Revolving Loans	59,306		57,999
Credit Card and Direct/ Indirect Consumer \| Credit card
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	101,595		104,823
Total Credit Card as of March 31, 2026	102,833		106,027
Revolving Loans	101,595		104,823
Revolving Loans Converted to Term Loans	1,238		1,204
Gross charge-offs, Revolving Loans	1,102		4,338
Gross charge-offs, Total Revolving Loans And Revolving Loans Converted to Term Loans	1,144		4,498
Gross charge-offs, Revolving Loans	1,102		4,338
Gross charge-offs, Revolving Loans Converted to Term Loans	42		160
Credit Card and Direct/ Indirect Consumer \| Credit card \| Less than 620
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	5,784		5,872
Total Credit Card as of March 31, 2026	6,172		6,255
Revolving Loans	5,784		5,872
Revolving Loans Converted to Term Loans	388		383
Credit Card and Direct/ Indirect Consumer \| Credit card \| Greater than or equal to 620 and less than 660
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	5,546		5,640
Total Credit Card as of March 31, 2026	5,799		5,883
Revolving Loans	5,546		5,640
Revolving Loans Converted to Term Loans	253		243
Credit Card and Direct/ Indirect Consumer \| Credit card \| Greater than or equal to 660 and less than 740
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	39,621		40,679
Total Credit Card as of March 31, 2026	40,131		41,176
Revolving Loans	39,621		40,679
Revolving Loans Converted to Term Loans	510		497
Credit Card and Direct/ Indirect Consumer \| Credit card \| Greater than or equal to 740
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	50,644		52,632
Total Credit Card as of March 31, 2026	50,731		52,713
Revolving Loans	50,644		52,632
Revolving Loans Converted to Term Loans	87		81
Credit Card and Direct/ Indirect Consumer \| Credit card \| Other internal credit metrics
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	0		0
Total Credit Card as of March 31, 2026	0		0
Revolving Loans	0		0
Revolving Loans Converted to Term Loans	$ 0		$ 0