Quarterly report pursuant to Section 13 or 15(d)

Securities - Debt Securities (Details)

v3.10.0.1
Securities - Debt Securities (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Dec. 31, 2017
Available-for-sale Debt Securities:      
Amortized Cost $ 247,610 $ 247,610 $ 304,671
Gross Unrealized Gains 455 455 1,078
Gross Unrealized Losses (9,017) (9,017) (3,118)
Fair Value 239,048 239,048 302,631
Other Debt Securities, Carried at Fair Value:      
Amortized Cost 12,409 12,409 12,273
Gross Unrealized Gains 205 205 252
Gross Unrealized Losses (27) (27) (39)
Fair Value 12,587 12,587 12,486
Debt securities carried at fair value:      
Amortized Cost 260,019 260,019 316,944
Gross Unrealized Gains 660 660 1,330
Gross Unrealized Losses (9,044) (9,044) (3,157)
Debt securities carried at fair value 251,635 251,635 315,117
Held-to-maturity Securities:      
Amortized Cost 194,472 194,472 125,013
Gross Unrealized Gains 1 1 111
Gross Unrealized Losses (6,485) (6,485) (1,825)
Held-to-maturity, fair value 187,988 187,988 123,299
Debt securities:      
Amortized Cost 454,491 454,491 441,957
Gross Unrealized Gains 661 661 1,441
Gross Unrealized Losses (15,529) (15,529) (4,982)
Fair Value 439,623 439,623 438,416
Available-for-sale Equity Securities:      
Available-for-sale debt securities reclassified to held to maturity 25,000 50,000  
Securities, pledged as collateral 39,700 39,700 35,800
FNMA      
Debt securities carried at fair value:      
Amortized Cost 165,300 165,300 163,600
Debt securities carried at fair value 159,300 159,300 162,100
FHLMC      
Debt securities carried at fair value:      
Amortized Cost 53,100 53,100 50,300
Debt securities carried at fair value 51,400 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 163,663 163,663 217,239
Gross Unrealized Gains 329 329 840
Gross Unrealized Losses (6,555) (6,555) (1,993)
Fair Value 157,437 157,437 216,086
Other Debt Securities, Carried at Fair Value:      
Fair Value 1,696 1,696 2,769
Debt securities carried at fair value:      
Debt securities carried at fair value 159,133 159,133  
Agency      
Available-for-sale Debt Securities:      
Amortized Cost 141,721 141,721 194,119
Gross Unrealized Gains 101 101 506
Gross Unrealized Losses (5,710) (5,710) (1,696)
Fair Value 136,112 136,112 192,929
Debt securities carried at fair value:      
Debt securities carried at fair value 136,112 136,112  
Agency-collateralized mortgage obligations      
Available-for-sale Debt Securities:      
Amortized Cost 5,878 5,878 6,846
Gross Unrealized Gains 9 9 39
Gross Unrealized Losses (209) (209) (81)
Fair Value 5,678 5,678 6,804
Debt securities carried at fair value:      
Debt securities carried at fair value 5,678 5,678  
Commercial      
Available-for-sale Debt Securities:      
Amortized Cost 14,138 14,138 13,864
Gross Unrealized Gains 2 2 28
Gross Unrealized Losses (630) (630) (208)
Fair Value 13,510 13,510 13,684
Debt securities carried at fair value:      
Debt securities carried at fair value 13,510 13,510  
Non-agency residential      
Available-for-sale Debt Securities:      
Amortized Cost 1,926 1,926 2,410
Gross Unrealized Gains 217 217 267
Gross Unrealized Losses (6) (6) (8)
Fair Value 2,137 2,137 $ 2,669
Debt securities carried at fair value:      
Debt securities carried at fair value $ 3,833 $ 3,833  
Non-agency residential | Prime      
Available-for-sale Equity Securities:      
Available-for-sale securities, percent held by rating 65.00% 65.00% 62.00%
Non-agency residential | Alt-A      
Available-for-sale Equity Securities:      
Available-for-sale securities, percent held by rating 7.00% 7.00% 13.00%
Non-agency residential | Subprime      
Available-for-sale Equity Securities:      
Available-for-sale securities, percent held by rating 28.00% 28.00% 25.00%
U.S. Treasury and agency securities      
Available-for-sale Debt Securities:      
Amortized Cost $ 54,664 $ 54,664 $ 54,523
Gross Unrealized Gains 8 8 18
Gross Unrealized Losses (2,366) (2,366) (1,018)
Fair Value 52,306 52,306 53,523
Debt securities carried at fair value:      
Debt securities carried at fair value 52,306 52,306  
Non-U.S. securities      
Available-for-sale Debt Securities:      
Amortized Cost 7,076 7,076 6,669
Gross Unrealized Gains 5 5 9
Gross Unrealized Losses (2) (2) (1)
Fair Value 7,079 7,079 6,677
Other Debt Securities, Carried at Fair Value:      
Fair Value 10,888 10,888 9,488
Debt securities carried at fair value:      
Debt securities carried at fair value 17,967 17,967  
Other taxable securities, substantially all asset-backed securities      
Available-for-sale Debt Securities:      
Amortized Cost 3,806 3,806 5,699
Gross Unrealized Gains 77 77 73
Gross Unrealized Losses (7) (7) (2)
Fair Value 3,876 3,876 5,770
Other Debt Securities, Carried at Fair Value:      
Fair Value 3 3 229
Debt securities carried at fair value:      
Debt securities carried at fair value 3,879 3,879  
Total taxable securities      
Available-for-sale Debt Securities:      
Amortized Cost 229,209 229,209 284,130
Gross Unrealized Gains 419 419 940
Gross Unrealized Losses (8,930) (8,930) (3,014)
Fair Value 220,698 220,698 282,056
Debt securities carried at fair value:      
Debt securities carried at fair value 233,285 233,285  
Tax-exempt securities      
Available-for-sale Debt Securities:      
Amortized Cost 18,401 18,401 20,541
Gross Unrealized Gains 36 36 138
Gross Unrealized Losses (87) (87) (104)
Fair Value 18,350 18,350 $ 20,575
Debt securities carried at fair value:      
Debt securities carried at fair value $ 18,350 $ 18,350