Annual report pursuant to Section 13 and 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 12 Months Ended
Dec. 31, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Total gains/losses for the period:        
Included in OCI   $ (52)    
Derivative instruments        
Opening balance   (1) $ (2) $ 6
Transfers out of Level 3 $ (35)   (15) (7)
Total gains/losses for the period:        
Included in earnings 35 35 16 (1)
Included in OCI 0   0 0
Purchases/originations 0   0 0
Sales 0   0 0
Repayments 0   0 0
Settlements 3   0 0
Opening balance 2 2 (1) (2)
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date 0   0 (1)
MSRs        
Level 3 Assets Roll Forward:        
Opening balance   11 14 18
Transfers out of Level 3 0   0 0
Total gains/losses for the period:        
Included in earnings (1) (1) (3) (4)
Included in OCI 0   0 0
Purchases/originations 0   0 0
Sales 0   0 0
Repayments 0   0 0
Settlements 0   0 0
Closing balance 10 10 11 14
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date (1)   (3) (4)
Municipal securities        
Level 3 Assets Roll Forward:        
Opening balance   3,167 2,798 2,095
Transfers out of Level 3 0   0 0
Total gains/losses for the period:        
Included in earnings (3) (3) (2) 7
Included in OCI (52)   (8) (28)
Purchases/originations 658   787 1,399
Sales 0   0 (37)
Repayments 0   0 0
Settlements (605)   (408) (638)
Closing balance 3,165 3,165 3,167 2,798
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date 0   0 (33)
Asset-backed securities        
Level 3 Assets Roll Forward:        
Opening balance   24 76 100
Transfers out of Level 3 0   0 0
Total gains/losses for the period:        
Included in earnings (2) (2) (5) (2)
Included in OCI 11   14 6
Purchases/originations 0   0 0
Sales (33)   (60) (25)
Repayments 0   0 0
Settlements 0   (1) (3)
Closing balance 0 0 24 76
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date 0   (4) 4
Automobile        
Level 3 Assets Roll Forward:        
Opening balance   38 48 2
Transfers out of Level 3 0   0 0
Total gains/losses for the period:        
Included in earnings 0   1 (2)
Included in OCI 0   0 0
Purchases/originations 0   0 56
Sales 0   0 0
Repayments (8)   (11) (8)
Settlements 0   0 0
Closing balance 30 $ 30 38 48
Change in unrealized gains or losses for the period included in earnings for assets held at end of the reporting date $ 0   $ 0 $ 0