Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUES OF ASSETS AND LIABILITIES - Level 3 Roll Forward (Details)

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FAIR VALUES OF ASSETS AND LIABILITIES - Level 3 Roll Forward (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Assets Level 3 Roll Forward:                
Transfers out of Level 3     $ 0          
Derivative instruments                
Opening balance $ (5) $ 23 (5) $ 23   $ 4   $ (41)
Transfers out of Level 3       (70)        
Included in OCI     0 0        
Purchases/originations     0 7        
Sales   0   0        
Settlements     0 0        
Closing balance (5) 23 (5) 23        
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date     (9) 21        
Mortgage banking income                
Derivative instruments                
Included in earnings: (2) 37 (9) 45        
Interest and Fee Income                
Derivative instruments                
Included in earnings: 0   0          
Provision For Credit Loss                
Derivative instruments                
Included in earnings:     0          
MSRs                
Assets Level 3 Roll Forward:                
Opening balance 416 274 351 210        
Transfers out of Level 3 0 0 0 0        
Total gains/losses for the period:                
Included in OCI 0 0 0 0        
Purchases/originations 18 97 48 130        
Sales   0   0        
Repayments 0 0 0 0        
Settlements (15) (20) (31) (40)        
Closing balance 463 327 463 327 $ 416 351 $ 274 210
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date 44 (24) (95) (27)        
MSRs | Mortgage banking income                
Total gains/losses for the period:                
Included in earnings: 44 (24) 95 27        
MSRs | Interest and Fee Income                
Total gains/losses for the period:                
Included in earnings: 0   0          
MSRs | Provision For Credit Loss                
Total gains/losses for the period:                
Included in earnings:     0          
Derivative instruments                
Total gains/losses for the period:                
Repayments     0 0        
Derivative instruments                
Opening balance (5)   (5)   (10)   10  
Transfers out of Level 3 7 (31)            
Included in OCI 0 0            
Purchases/originations 0 7            
Repayments 0 0            
Settlements 0 0            
Closing balance (5)   (5)          
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date (7) (5)            
Municipal securities                
Assets Level 3 Roll Forward:                
Opening balance 3,282 3,070 3,477 2,951        
Transfers out of Level 3 0 0 0 0        
Total gains/losses for the period:                
Included in OCI (88) (1) (208) (5)        
Purchases/originations 386 1,144 558 1,353        
Sales   (352)   (352)        
Repayments 0 0 0 0        
Settlements (203) (252) (444) (338)        
Closing balance 3,377 3,609 3,377 3,609 3,282 3,477 3,070 2,951
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date (90) (1)            
Derivative instruments                
Change in unrealized gains or losses for the period included in other comprehensive income for assets held at the end of the reporting period     (205) (4)        
Municipal securities | Mortgage banking income                
Total gains/losses for the period:                
Included in earnings: 0 0 0 0        
Municipal securities | Interest and Fee Income                
Total gains/losses for the period:                
Included in earnings: 0   (2)          
Municipal securities | Provision For Credit Loss                
Total gains/losses for the period:                
Included in earnings:     (4)          
Private-label CMO                
Assets Level 3 Roll Forward:                
Opening balance 19 11 20 9        
Transfers out of Level 3 0 0 0 0        
Total gains/losses for the period:                
Included in OCI 0 0 0 0        
Purchases/originations 4 6 4 8        
Sales   0   0        
Repayments 0 0 0 0        
Settlements 0 1 0 1        
Closing balance 22 18 22 18 19 20 11 9
Derivative instruments                
Change in unrealized gains or losses for the period included in other comprehensive income for assets held at the end of the reporting period     0 0        
Private-label CMO | Mortgage banking income                
Total gains/losses for the period:                
Included in earnings: 0 0 0 0        
Private-label CMO | Interest and Fee Income                
Total gains/losses for the period:                
Included in earnings: (1)   (2)          
Private-label CMO | Provision For Credit Loss                
Total gains/losses for the period:                
Included in earnings:     0          
Asset-backed securities                
Assets Level 3 Roll Forward:                
Opening balance 62 47 70 10        
Transfers out of Level 3 0 0 0 0        
Total gains/losses for the period:                
Included in OCI 0 0 (1) 0        
Purchases/originations 0 38 0 75        
Sales   0   0        
Repayments 0 0 0 0        
Settlements (18) (39) (25) (39)        
Closing balance 44 46 44 46 62 70 47 10
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date 0              
Derivative instruments                
Change in unrealized gains or losses for the period included in other comprehensive income for assets held at the end of the reporting period     0 0        
Asset-backed securities | Mortgage banking income                
Total gains/losses for the period:                
Included in earnings: 0 0 0 0        
Asset-backed securities | Interest and Fee Income                
Total gains/losses for the period:                
Included in earnings: 0   0          
Asset-backed securities | Provision For Credit Loss                
Total gains/losses for the period:                
Included in earnings:     0          
Loans held for investment                
Assets Level 3 Roll Forward:                
Opening balance 18 22 19 23        
Transfers out of Level 3 0 0 0 0        
Total gains/losses for the period:                
Included in OCI 0 0 0 0        
Purchases/originations 0 0 0 0        
Sales   0   0        
Repayments (1) (1) (2) (2)        
Settlements 0 0 0 0        
Closing balance 17 21 17 21 $ 18 $ 19 $ 22 $ 23
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date 0 0 0 0        
Loans held for investment | Mortgage banking income                
Total gains/losses for the period:                
Included in earnings: 0 $ 0 0 $ 0        
Loans held for investment | Interest and Fee Income                
Total gains/losses for the period:                
Included in earnings: $ 0   0          
Loans held for investment | Provision For Credit Loss                
Total gains/losses for the period:                
Included in earnings:     $ 0