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Securitizations and Other Variable Interest Entities (Tables)
12 Months Ended
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Mortgage Related Securitizations The table below summarizes select information related to first-lien mortgage securitizations for 2021, 2020 and 2019.
First-lien Mortgage Securitizations
 
Residential Mortgage - AgencyCommercial Mortgage
(Dollars in millions)202120202019202120202019
Proceeds from loan sales (1)
$6,664 $15,823 $6,858 $10,874 $5,084 $8,661 
Gains on securitizations (2)
9 728 27 156 61 103 
Repurchases from securitization trusts (3)
756 436 881  — — 
(1)The Corporation transfers residential mortgage loans to securitizations sponsored primarily by the GSEs or GNMA in the normal course of business and primarily receives RMBS in exchange. Substantially all of these securities are classified as Level 2 within the fair value hierarchy and are typically sold shortly after receipt.
(2)A majority of the first-lien residential mortgage loans securitized are initially classified as LHFS and accounted for under the fair value option. Gains recognized on these LHFS prior to securitization, which totaled $121 million, $160 million and $64 million net of hedges, during 2021, 2020 and 2019, respectively, are not included in the table above.
(3)The Corporation may have the option to repurchase delinquent loans out of securitization trusts, which reduces the amount of servicing advances it is required to make. The Corporation may also repurchase loans from securitization trusts to perform modifications. Repurchased loans include FHA-insured mortgages collateralizing GNMA securities.
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities
The table below summarizes select information related to home equity, credit card and other asset-backed VIEs in which the Corporation held a variable interest at December 31, 2021 and 2020.
Home Equity Loan, Credit Card and Other Asset-backed VIEs
 
Home Equity (1)
Credit Card (2)
Resecuritization TrustsMunicipal Bond Trusts
 December 31
(Dollars in millions)20212020202120202021202020212020
Unconsolidated VIEs      
Maximum loss exposure$152 $206 $ $— $6,089 $8,543 $4,094 $3,507 
On-balance sheet assets      
Securities (3):
      
Trading account assets$ $— $ $— $1,030 $948 $ $— 
Debt securities carried at fair value
1  — 1,903 2,727  — 
Held-to-maturity securities —  — 3,156 4,868  — 
Total retained positions$1 $$ $— $6,089 $8,543 $ $— 
Total assets of VIEs $430 $609 $ $— $18,633 $17,250 $4,655 $4,042 
Consolidated VIEs      
Maximum loss exposure$45 $58 $10,279 $14,606 $680 $217 $210 $1,030 
On-balance sheet assets      
Trading account assets$ $— $ $— $686 $217 $122 $990 
Loans and leases140 218 14,434 21,310  —  — 
Allowance for loan and lease losses
14 14 (970)(1,704) —  — 
All other assets3 70 1,289  — 88 40 
Total assets$157 $236 $13,534 $20,895 $686 $217 $210 $1,030 
On-balance sheet liabilities      
Short-term borrowings
$ $— $ $— $ $— $196 $432 
Long-term debt113 178 3,248 6,273 6 —  — 
All other liabilities — 7 16  —  — 
Total liabilities$113 $178 $3,255 $6,289 $6 $— $196 $432 
(1)For unconsolidated home equity loan VIEs, the maximum loss exposure includes outstanding trust certificates issued by trusts in rapid amortization, net of recorded reserves. For both consolidated and unconsolidated home equity loan VIEs, the maximum loss exposure excludes the reserve for representations and warranties obligations and corporate guarantees. For more information, see Note 12 – Commitments and Contingencies.
(2)At December 31, 2021 and 2020, loans and leases in the consolidated credit card trust included $4.3 billion and $7.6 billion of seller’s interest.
(3)The retained senior securities were valued using quoted market prices or observable market inputs (Level 2 of the fair value hierarchy).
First Lien Mortgages  
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities The following table summarizes select information related to first-lien mortgage securitization trusts in which the Corporation held a variable interest at December 31, 2021 and 2020.
First-lien Mortgage VIEs
Residential Mortgage  
   Non-agency  
 AgencyPrimeSubprimeAlt-ACommercial Mortgage
 December 31
(Dollars in millions)2021202020212020202120202021202020212020
Unconsolidated VIEs          
Maximum loss exposure (1)
$11,600 $13,477 $121 $250 $908 $1,031 $14 $46 $1,445 $1,169 
On-balance sheet assets
          
Senior securities:
          
Trading account assets
$175 $152 $8 $$44 $$12 $12 $21 $60 
Debt securities carried at fair value
5,009 7,588  103 537 676  33  — 
Held-to-maturity securities
6,416 5,737  —  —  — 1,157 925 
All other assets — 3 29 26 2 93 50 
Total retained positions
$11,600 $13,477 $11 $111 $610 $710 $14 $46 $1,271 $1,035 
Principal balance outstanding (2)
$93,142 $133,497 $4,710 $6,081 $6,179 $6,691 $13,627 $16,554 $85,540 $59,268 
Consolidated VIEs          
Maximum loss exposure (1)
$1,644 $1,328 $49 $66 $ $53 $ $— $ $— 
On-balance sheet assets
          
Trading account assets
$1,644 $1,328 $ $350 $ $260 $ $— $ $— 
Loans and leases, net — 58 —  —  —  — 
Total assets$1,644 $1,328 $58 $350 $ $260 $ $— $ $— 
Total liabilities$ $— $9 $284 $ $207 $ $— $ $— 
(1)Maximum loss exposure includes obligations under loss-sharing reinsurance and other arrangements for non-agency residential mortgage and commercial mortgage securitizations, but excludes the reserve for representations and warranties obligations and corporate guarantees and also excludes servicing advances and other servicing rights and obligations. For more information, see Note 12 – Commitments and Contingencies and Note 20 – Fair Value Measurements.
(2)Principal balance outstanding includes loans where the Corporation was the transferor to securitization VIEs with which it has continuing involvement, which may include servicing the loans.
Other Variable Interest Entities  
Variable Interest Entity [Line Items]  
Schedule of Variable Interest Entities The table below summarizes select information related to other VIEs in which the Corporation held a variable interest at December 31, 2021 and 2020.
Other VIEs
ConsolidatedUnconsolidatedTotalConsolidatedUnconsolidatedTotal
(Dollars in millions)December 31, 2021December 31, 2020
Maximum loss exposure $4,819 $27,790 $32,609 $4,106 $23,870 $27,976 
On-balance sheet assets      
Trading account assets $2,552 $626 $3,178 $2,080 $623 $2,703 
Debt securities carried at fair value  7 7 — 
Loans and leases 2,503 47 2,550 2,108 184 2,292 
Allowance for loan and lease losses (2)(12)(14)(3)(3)(6)
All other assets 28 26,628 26,656 54 22,553 22,607 
Total$5,081 $27,296 $32,377 $4,239 $23,366 $27,605 
On-balance sheet liabilities      
Short-term borrowings$51 $ $51 $22 $— $22 
Long-term debt211  211 111 — 111 
All other liabilities  6,548 6,548 — 5,658 5,658 
Total $262 $6,548 $6,810 $133 $5,658 $5,791 
Total assets of VIEs $5,081 $92,249 $97,330 $4,239 $77,984 $82,223