Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - First Lien Mortgages VIE (Details)

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Securitizations and Other Variable Interest Entities - First Lien Mortgages VIE (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
On-balance sheet assets      
Trading account assets $ 313,400 $ 247,080  
Debt securities carried at fair value 297,700 308,073  
Held-to-maturity securities 672,218 674,591  
Other assets 170,250 163,869  
Loans and leases 993,145 979,124  
Total assets 3,238,223 3,169,495 $ 2,969,992
Total liabilities 2,971,606 2,899,429  
Consolidated VIEs      
On-balance sheet assets      
Trading account assets 2,160 5,004  
Other assets 417 189  
Loans and leases 15,946 17,135  
Total assets 17,643 21,370  
Total liabilities 3,791 3,841  
Agency | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 10,991 11,600  
On-balance sheet assets      
Other assets 0 0  
Total assets 10,991 11,600  
Principal balance outstanding 90,072 93,142  
Agency | Consolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 1,434 1,644  
On-balance sheet assets      
Trading account assets 1,435 1,644  
Loans and leases 0 0  
Total assets 1,435 1,644  
Total liabilities 1 0  
Agency | Senior securities: | Unconsolidated VIEs      
On-balance sheet assets      
Trading account assets 318 175  
Debt securities carried at fair value 4,331 5,009  
Held-to-maturity securities 6,342 6,416  
Non-agency | Prime | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 109 121  
On-balance sheet assets      
Other assets 3 3  
Total assets 7 11  
Principal balance outstanding 4,428 4,710  
Non-agency | Prime | Consolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 38 49  
On-balance sheet assets      
Trading account assets 0 0  
Loans and leases 52 58  
Total assets 52 58  
Total liabilities 14 9  
Non-agency | Prime | Senior securities: | Unconsolidated VIEs      
On-balance sheet assets      
Trading account assets 4 8  
Debt securities carried at fair value 0 0  
Held-to-maturity securities 0 0  
Non-agency | Subprime | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 848 908  
On-balance sheet assets      
Other assets 27 29  
Total assets 559 610  
Principal balance outstanding 5,663 6,179  
Non-agency | Subprime | 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  
Total assets 0 0  
Total liabilities 0 0  
Non-agency | Subprime | Senior securities: | Unconsolidated VIEs      
On-balance sheet assets      
Trading account assets 35 44  
Debt securities carried at fair value 497 537  
Held-to-maturity securities 0 0  
Non-agency | Alt-A | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 18 14  
On-balance sheet assets      
Other assets 2 2  
Total assets 18 14  
Principal balance outstanding 12,979 13,627  
Non-agency | 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  
Total assets 0 0  
Total liabilities 0 0  
Non-agency | Alt-A | Senior securities: | Unconsolidated VIEs      
On-balance sheet assets      
Trading account assets 16 12  
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 19,242    
Commercial Mortgage | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 1,510 1,445  
On-balance sheet assets      
Other assets 86 93  
Total assets 1,342 1,271  
Principal balance outstanding 85,207 85,540  
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  
Total assets 0 0  
Total liabilities 0 0  
Commercial Mortgage | Senior securities: | Unconsolidated VIEs      
On-balance sheet assets      
Trading account assets 14 21  
Debt securities carried at fair value 0  
Held-to-maturity securities $ 1,242 $ 1,157