Annual report pursuant to Section 13 and 15(d)

Securities - Debt Securities (Details)

v3.10.0.1
Securities - Debt Securities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Available-for-sale Debt Securities:    
Amortized Cost $ 234,280 $ 304,671
Gross Unrealized Gains 499 1,078
Gross Unrealized Losses (5,413) (3,118)
Fair Value 229,366 302,631
Other Debt Securities, Carried at Fair Value:    
Amortized Cost 8,595 12,273
Gross Unrealized Gains 172 252
Gross Unrealized Losses (32) (39)
Fair Value 8,735 12,486
Debt securities carried at fair value:    
Amortized Cost 242,875 316,944
Gross Unrealized Gains 671 1,330
Gross Unrealized Losses (5,445) (3,157)
Debt securities carried at fair value 238,101 315,117
Held-to-maturity Securities:    
Amortized Cost 203,652 125,013
Gross Unrealized Gains 747 111
Gross Unrealized Losses (3,964) (1,825)
Held-to-maturity, fair value 200,435 123,299
Debt securities:    
Amortized Cost 446,527 441,957
Gross Unrealized Gains 1,418 1,441
Gross Unrealized Losses (9,409) (4,982)
Fair Value 438,536 438,416
Available-for-sale Equity Securities:    
Available-for-sale debt securities reclassified to held to maturity 64,500  
Securities, pledged as collateral 40,600 35,800
FNMA    
Debt securities carried at fair value:    
Amortized Cost 161,200 163,600
Debt securities carried at fair value 158,500 162,100
FHLMC    
Debt securities carried at fair value:    
Amortized Cost 52,200 50,300
Debt securities carried at fair value 51,400 50,000
Other assets    
Available-for-sale Equity Securities:    
Amortized Cost   27
Gross Unrealized Gains   0
Gross Unrealized Losses   (2)
Fair Value   25
Mortgage-backed securities    
Available-for-sale Debt Securities:    
Amortized Cost 146,998 217,239
Gross Unrealized Gains 304 840
Gross Unrealized Losses (3,951) (1,993)
Fair Value 143,351 216,086
Other Debt Securities, Carried at Fair Value:    
Fair Value 1,606 2,769
Debt securities carried at fair value:    
Debt securities carried at fair value 144,957  
Agency    
Available-for-sale Debt Securities:    
Amortized Cost 125,116 194,119
Gross Unrealized Gains 138 506
Gross Unrealized Losses (3,428) (1,696)
Fair Value 121,826 192,929
Debt securities carried at fair value:    
Debt securities carried at fair value 121,826  
Agency-collateralized mortgage obligations    
Available-for-sale Debt Securities:    
Amortized Cost 5,621 6,846
Gross Unrealized Gains 19 39
Gross Unrealized Losses (110) (81)
Fair Value 5,530 6,804
Debt securities carried at fair value:    
Debt securities carried at fair value 5,530  
Commercial    
Available-for-sale Debt Securities:    
Amortized Cost 14,469 13,864
Gross Unrealized Gains 11 28
Gross Unrealized Losses (402) (208)
Fair Value 14,078 13,684
Debt securities carried at fair value:    
Debt securities carried at fair value 14,078  
Non-agency residential    
Available-for-sale Debt Securities:    
Amortized Cost 1,792 2,410
Gross Unrealized Gains 136 267
Gross Unrealized Losses (11) (8)
Fair Value 1,917 $ 2,669
Debt securities carried at fair value:    
Debt securities carried at fair value $ 3,523  
Non-agency residential | Prime    
Available-for-sale Equity Securities:    
Available-for-sale securities, percent held by rating 68.00% 62.00%
Non-agency residential | Alt-A    
Available-for-sale Equity Securities:    
Available-for-sale securities, percent held by rating 4.00% 13.00%
Non-agency residential | Subprime    
Available-for-sale Equity Securities:    
Available-for-sale securities, percent held by rating 28.00% 25.00%
U.S. Treasury and agency securities    
Available-for-sale Debt Securities:    
Amortized Cost $ 56,239 $ 54,523
Gross Unrealized Gains 62 18
Gross Unrealized Losses (1,378) (1,018)
Fair Value 54,923 53,523
Other Debt Securities, Carried at Fair Value:    
Fair Value 1,282 0
Debt securities carried at fair value:    
Debt securities carried at fair value 56,205  
Non-U.S. securities    
Available-for-sale Debt Securities:    
Amortized Cost 9,307 6,669
Gross Unrealized Gains 5 9
Gross Unrealized Losses (6) (1)
Fair Value 9,306 6,677
Other Debt Securities, Carried at Fair Value:    
Fair Value 5,844 9,488
Debt securities carried at fair value:    
Debt securities carried at fair value 15,150  
Other taxable securities, substantially all asset-backed securities    
Available-for-sale Debt Securities:    
Amortized Cost 4,387 5,699
Gross Unrealized Gains 29 73
Gross Unrealized Losses (6) (2)
Fair Value 4,410 5,770
Other Debt Securities, Carried at Fair Value:    
Fair Value 3 229
Debt securities carried at fair value:    
Debt securities carried at fair value 4,413  
Total taxable securities    
Available-for-sale Debt Securities:    
Amortized Cost 216,931 284,130
Gross Unrealized Gains 400 940
Gross Unrealized Losses (5,341) (3,014)
Fair Value 211,990 282,056
Debt securities carried at fair value:    
Debt securities carried at fair value 220,725  
Tax-exempt securities    
Available-for-sale Debt Securities:    
Amortized Cost 17,349 20,541
Gross Unrealized Gains 99 138
Gross Unrealized Losses (72) (104)
Fair Value 17,376 $ 20,575
Debt securities carried at fair value:    
Debt securities carried at fair value $ 17,376