Quarterly report pursuant to Section 13 or 15(d)

Securities - AFS Debt Securities in a Continuous Unrealized Loss Position (Details)

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Securities - AFS Debt Securities in a Continuous Unrealized Loss Position (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Fair Value    
Less than Twelve Months $ 16,654 $ 39,109
Twelve Months or Longer 3,029 38,742
Total 19,683 77,851
Gross Unrealized Losses    
Less than Twelve Months (189) (146)
Twelve Months or Longer (62) (298)
Total (251) (444)
Mortgage-backed securities    
Fair Value    
Less than Twelve Months 7,182 20,198
Twelve Months or Longer 789 18,627
Total 7,971 38,825
Gross Unrealized Losses    
Less than Twelve Months (70) (70)
Twelve Months or Longer (27) (171)
Total (97) (241)
Agency    
Fair Value    
Less than Twelve Months 6,244 17,641
Twelve Months or Longer 2 17,238
Total 6,246 34,879
Gross Unrealized Losses    
Less than Twelve Months (41) (41)
Twelve Months or Longer 0 (142)
Total (41) (183)
Agency-collateralized mortgage obligations    
Fair Value    
Less than Twelve Months 296 255
Twelve Months or Longer 516 925
Total 812 1,180
Gross Unrealized Losses    
Less than Twelve Months (2) (1)
Twelve Months or Longer (14) (23)
Total (16) (24)
Commercial    
Fair Value    
Less than Twelve Months 292 2,180
Twelve Months or Longer 197 442
Total 489 2,622
Gross Unrealized Losses    
Less than Twelve Months 0 (22)
Twelve Months or Longer (1) (3)
Total (1) (25)
Non-agency residential    
Fair Value    
Less than Twelve Months 350 122
Twelve Months or Longer 74 22
Total 424 144
Gross Unrealized Losses    
Less than Twelve Months (27) (6)
Twelve Months or Longer (12) (3)
Total (39) (9)
U.S. Treasury and agency securities    
Fair Value    
Less than Twelve Months 615 12,836
Twelve Months or Longer 504 18,866
Total 1,119 31,702
Gross Unrealized Losses    
Less than Twelve Months (3) (71)
Twelve Months or Longer (5) (124)
Total (8) (195)
Non-U.S. securities    
Fair Value    
Less than Twelve Months 2,868 851
Twelve Months or Longer 533 837
Total 3,401 1,688
Gross Unrealized Losses    
Less than Twelve Months (10) 0
Twelve Months or Longer (4) (2)
Total (14) (2)
Other taxable securities, substantially all asset-backed securities    
Fair Value    
Less than Twelve Months 1,560 938
Twelve Months or Longer 290 222
Total 1,850 1,160
Gross Unrealized Losses    
Less than Twelve Months (27) 0
Twelve Months or Longer (13) 0
Total (40) 0
Total taxable securities    
Fair Value    
Less than Twelve Months 12,225 34,823
Twelve Months or Longer 2,116 38,552
Total 14,341 73,375
Gross Unrealized Losses    
Less than Twelve Months (110) (141)
Twelve Months or Longer (49) (297)
Total (159) (438)
Tax-exempt securities    
Fair Value    
Less than Twelve Months 4,429 4,286
Twelve Months or Longer 913 190
Total 5,342 4,476
Gross Unrealized Losses    
Less than Twelve Months (79) (5)
Twelve Months or Longer (13) (1)
Total $ (92) $ (6)