Quarterly report pursuant to Section 13 or 15(d)

Securities - Debt Securities (Details)

v3.8.0.1
Securities - Debt Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2018
Dec. 31, 2017
Available-for-sale Debt Securities:    
Amortized Cost $ 297,726 $ 304,671
Gross Unrealized Gains 622 1,078
Gross Unrealized Losses (7,988) (3,118)
Fair Value 290,360 302,631
Other Debt Securities, Carried at Fair Value:    
Amortized Cost 12,682 12,273
Gross Unrealized Gains 291 252
Gross Unrealized Losses (35) (39)
Fair Value 12,938 12,486
Debt securities carried at fair value:    
Amortized Cost 310,408 316,944
Gross Unrealized Gains 913 1,330
Gross Unrealized Losses (8,023) (3,157)
Debt securities carried at fair value 303,298 315,117
Held-to-maturity Securities:    
Amortized Cost 123,539 125,013
Gross Unrealized Gains 12 111
Gross Unrealized Losses (4,419) (1,825)
Held-to-maturity, fair value 119,132 123,299
Debt securities:    
Amortized Cost 433,947 441,957
Gross Unrealized Gains 925 1,441
Gross Unrealized Losses (12,442) (4,982)
Fair Value 422,430 438,416
Available-for-sale Equity Securities:    
Amortized Cost 247  
Fair Value 988  
Securities, pledged as collateral 36,900 35,800
Nonperforming Financing Receivable    
Available-for-sale Debt Securities:    
Fair Value 128 99
FNMA    
Debt securities carried at fair value:    
Amortized Cost 161,100 163,600
Debt securities carried at fair value 156,000 162,100
FHLMC    
Debt securities carried at fair value:    
Amortized Cost 49,300 50,300
Debt securities carried at fair value 48,000 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 212,303 217,239
Gross Unrealized Gains 444 840
Gross Unrealized Losses (6,075) (1,993)
Fair Value 206,672 216,086
Other Debt Securities, Carried at Fair Value:    
Fair Value 2,736 2,769
Debt securities carried at fair value:    
Debt securities carried at fair value 209,408  
Agency    
Available-for-sale Debt Securities:    
Amortized Cost 189,426 194,119
Gross Unrealized Gains 168 506
Gross Unrealized Losses (5,483) (1,696)
Fair Value 184,111 192,929
Debt securities carried at fair value:    
Debt securities carried at fair value 184,111  
Agency-collateralized mortgage obligations    
Available-for-sale Debt Securities:    
Amortized Cost 6,525 6,846
Gross Unrealized Gains 15 39
Gross Unrealized Losses (142) (81)
Fair Value 6,398 6,804
Other Debt Securities, Carried at Fair Value:    
Fair Value 0 5
Debt securities carried at fair value:    
Debt securities carried at fair value 6,398  
Commercial    
Available-for-sale Debt Securities:    
Amortized Cost 13,998 13,864
Gross Unrealized Gains 1 28
Gross Unrealized Losses (440) (208)
Fair Value 13,559 13,684
Debt securities carried at fair value:    
Debt securities carried at fair value 13,559  
Non-agency residential    
Available-for-sale Debt Securities:    
Amortized Cost 2,354 2,410
Gross Unrealized Gains 260 267
Gross Unrealized Losses (10) (8)
Fair Value 2,604 2,669
Other Debt Securities, Carried at Fair Value:    
Fair Value 2,736 $ 2,764
Debt securities carried at fair value:    
Debt securities carried at fair value $ 5,340  
Non-agency residential | Prime    
Available-for-sale Equity Securities:    
Available-for-sale securities, percent held by rating 62.00% 62.00%
Non-agency residential | Alt-A    
Available-for-sale Equity Securities:    
Available-for-sale securities, percent held by rating 13.00% 13.00%
Non-agency residential | Subprime    
Available-for-sale Equity Securities:    
Available-for-sale securities, percent held by rating 25.00% 25.00%
U.S. Treasury and agency securities    
Available-for-sale Debt Securities:    
Amortized Cost $ 54,753 $ 54,523
Gross Unrealized Gains 13 18
Gross Unrealized Losses (1,794) (1,018)
Fair Value 52,972 53,523
Debt securities carried at fair value:    
Debt securities carried at fair value 52,972  
Non-U.S. securities    
Available-for-sale Debt Securities:    
Amortized Cost 6,918 6,669
Gross Unrealized Gains 7 9
Gross Unrealized Losses 0 (1)
Fair Value 6,925 6,677
Other Debt Securities, Carried at Fair Value:    
Fair Value 9,976 9,488
Debt securities carried at fair value:    
Debt securities carried at fair value 16,901  
Other taxable securities, substantially all asset-backed securities    
Available-for-sale Debt Securities:    
Amortized Cost 4,619 5,699
Gross Unrealized Gains 100 73
Gross Unrealized Losses (5) (2)
Fair Value 4,714 5,770
Other Debt Securities, Carried at Fair Value:    
Fair Value 226 229
Debt securities carried at fair value:    
Debt securities carried at fair value 4,940  
Total taxable securities    
Available-for-sale Debt Securities:    
Amortized Cost 278,593 284,130
Gross Unrealized Gains 564 940
Gross Unrealized Losses (7,874) (3,014)
Fair Value 271,283 282,056
Debt securities carried at fair value:    
Debt securities carried at fair value 284,221  
Tax-exempt securities    
Available-for-sale Debt Securities:    
Amortized Cost 19,133 20,541
Gross Unrealized Gains 58 138
Gross Unrealized Losses (114) (104)
Fair Value 19,077 $ 20,575
Debt securities carried at fair value:    
Debt securities carried at fair value 19,077  
Debt securities    
Debt securities carried at fair value:    
Debt securities carried at fair value $ 303,298