Quarterly report [Sections 13 or 15(d)]

Securitizations and Other Variable Interest Entities - Other Asset-backed VIEs (Details)

Securitizations and Other Variable Interest Entities - Other Asset-backed VIEs (Details) - USD ($) $ in Millions	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
On-balance sheet assets
Trading account assets	$ 358,748		$ 366,954
Debt securities carried at fair value	363,419		402,975
Held-to-maturity securities	505,828		522,685
Loans and leases	1,217,619		1,185,700
Allowance for loan and lease losses	(13,114)	$ (13,148)	(13,203)	$ (13,291)	$ (13,256)	$ (13,240)
Other assets	175,164		164,986
Total assets	3,499,191		3,411,738	$ 3,440,798
On-balance sheet liabilities
Long-term debt	339,863		317,816
Total liabilities	3,198,097		3,108,495
Consolidated VIEs
On-balance sheet assets
Trading account assets	7,703		7,139
Loans and leases	17,905		17,875
Allowance for loan and lease losses	(858)		(871)
Other assets	889		709
Total assets	25,639		24,852
On-balance sheet liabilities
Long-term debt	7,555		6,847
All other liabilities	20		18
Total liabilities	14,539		12,644
Credit Card and Automobile \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	0		0
On-balance sheet assets
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	0		0
Total retained positions	0		0
Total assets	0		0
On-balance sheet liabilities
Total liabilities	0		0
Credit Card and Automobile \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	9,153		9,995
On-balance sheet assets
Trading account assets	0		0
Debt securities carried at fair value	0		0
Loans and leases	17,127		17,066
Allowance for loan and lease losses	(862)		(875)
Other assets	226		197
Total assets	16,491		16,388
On-balance sheet liabilities
Short-term borrowings	0		0
Long-term debt	7,319		6,375
All other liabilities	19		18
Total liabilities	7,338		6,393
Residual interests	4,200		5,400
Credit Card and Automobile \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	0		0
Debt securities carried at fair value	0		0
Held-to-maturity securities	0		0
Resecuritization Trusts and Customer VIEs \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	6,158		5,183
On-balance sheet assets
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	2,401		1,468
Total retained positions	6,158		5,183
Total assets	31,268		31,798
On-balance sheet liabilities
Total liabilities	0		0
Resecuritization Trusts and Customer VIEs \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	211		196
On-balance sheet assets
Trading account assets	394		394
Debt securities carried at fair value	0		0
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	41		40
Total assets	435		434
On-balance sheet liabilities
Short-term borrowings	0		0
Long-term debt	222		238
All other liabilities	0		0
Total liabilities	222		238
Resecuritization Trusts and Customer VIEs \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	1,429		1,223
Debt securities carried at fair value	690		745
Held-to-maturity securities	1,638		1,747
Municipal Bond Trusts and CDOs \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	3,138		3,107
On-balance sheet assets
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	6		5
Total retained positions	8		17
Total assets	7,794		8,065
On-balance sheet liabilities
Total liabilities	0		0
Municipal Bond Trusts and CDOs \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	7,130		5,975
On-balance sheet assets
Trading account assets	6,513		5,506
Debt securities carried at fair value	617		469
Loans and leases	0		0
Allowance for loan and lease losses	0		0
Other assets	0		0
Total assets	7,130		5,975
On-balance sheet liabilities
Short-term borrowings	6,964		5,779
Long-term debt	0		0
All other liabilities	0		0
Total liabilities	6,964		5,779
Municipal Bond Trusts and CDOs \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	2		12
Debt securities carried at fair value	0		0
Held-to-maturity securities	0		0
Investment VIEs and Leveraged Lease Trusts \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	4,773		3,955
On-balance sheet assets
Loans and leases	1,214		1,257
Allowance for loan and lease losses	(1)		(2)
Other assets	2,033		2,022
Total retained positions	4,222		3,429
Total assets	33,771		30,016
On-balance sheet liabilities
Total liabilities	392		409
Investment VIEs and Leveraged Lease Trusts \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	823		844
On-balance sheet assets
Trading account assets	59		55
Debt securities carried at fair value	0		0
Loans and leases	765		794
Allowance for loan and lease losses	(1)		(1)
Other assets	5		2
Total assets	828		850
On-balance sheet liabilities
Short-term borrowings	0		0
Long-term debt	4		6
All other liabilities	1		0
Total liabilities	5		6
Investment VIEs and Leveraged Lease Trusts \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	157		152
Debt securities carried at fair value	819		0
Held-to-maturity securities	$ 0		$ 0