Quarterly report [Sections 13 or 15(d)]

Securitizations and Other Variable Interest Entities - Mortgage and Home Equity Securitizations (Details)

Securitizations and Other Variable Interest Entities - Mortgage and Home Equity Securitizations (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
On-balance sheet assets
Trading account assets	$ 364,221	$ 366,954
Debt securities carried at fair value	386,389	402,975
Held-to-maturity securities	514,763	522,685
Loans and leases	1,205,035	1,185,700
Allowance for loan and lease losses	13,148	13,203	$ 13,256	$ 13,240
All other assets	168,921	164,986
Total assets	3,496,186	3,411,738	$ 3,349,039
Total liabilities	3,195,518	3,108,495
Consolidated VIEs
On-balance sheet assets
Trading account assets	7,184	7,139
Loans and leases	16,936	17,875
Allowance for loan and lease losses	855	871
All other assets	701	709
Total assets	23,966	24,852
Total liabilities	12,743	12,644
Agency \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	6,761	6,869
On-balance sheet assets
All other assets	0	0
Total assets	6,761	6,869
Principal balance outstanding	64,671	65,290
Agency \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	686	939
On-balance sheet assets
Trading account assets	686	939
Loans and leases	0	0
Allowance for loan and lease losses	0	0
All other assets	0	0
Total assets	686	939
Total liabilities	0	0
Agency \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	266	218
Debt securities carried at fair value	1,990	2,050
Held-to-maturity securities	4,505	4,601
Residential Mortgage \| Prime and Alt-A \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	12	11
On-balance sheet assets
All other assets	2	2
Total assets	12	11
Principal balance outstanding	10,950	11,242
Residential Mortgage \| Prime and Alt-A \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	0	0
On-balance sheet assets
Trading account assets	0	0
Loans and leases	0	0
Allowance for loan and lease losses	0	0
All other assets	0	0
Total assets	0	0
Total liabilities	0	0
Residential Mortgage \| Prime and Alt-A \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	10	9
Debt securities carried at fair value	0	0
Held-to-maturity securities	0	0
Residential Mortgage \| Subprime \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	539	495
On-balance sheet assets
All other assets	26	17
Total assets	447	430
Principal balance outstanding	3,910	3,775
Residential Mortgage \| Subprime \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	0	30
On-balance sheet assets
Trading account assets	0	245
Loans and leases	0	0
Allowance for loan and lease losses	0	0
All other assets	0	0
Total assets	0	245
Total liabilities	0	215
Residential Mortgage \| Subprime \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	28	6
Debt securities carried at fair value	393	407
Held-to-maturity securities	0	0
Home equity \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	0	0
On-balance sheet assets
All other assets	0	0
Total assets	0	0
Principal balance outstanding	147	154
Home equity \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	7	8
On-balance sheet assets
Trading account assets	0	0
Loans and leases	14	15
Allowance for loan and lease losses	5	5
All other assets	0	1
Total assets	19	21
Total liabilities	12	13
Home equity \| 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
Commercial Mortgage
On-balance sheet assets
Debt securities carried at fair value	43,953
Commercial Mortgage \| Unconsolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	1,728	1,770
On-balance sheet assets
All other assets	24	24
Total assets	1,586	1,634
Principal balance outstanding	90,425	91,802
Commercial Mortgage \| Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum loss exposure	0	0
On-balance sheet assets
Trading account assets	0	0
Loans and leases	0	0
Allowance for loan and lease losses	0	0
All other assets	0	0
Total assets	0	0
Total liabilities	0	0
Commercial Mortgage \| Senior securities: \| Unconsolidated VIEs
On-balance sheet assets
Trading account assets	525	535
Debt securities carried at fair value	0	0
Held-to-maturity securities	$ 1,037	$ 1,075