Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Income Tax Expense (Benefit) (Details)

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Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current income tax expense      
U.S. federal $ 1,310 $ 302 $ 2,539
U.S. state and local 557 120 210
Non-U.S. 939 984 561
Total current expense 2,806 1,406 3,310
Deferred income tax expense      
U.S. federal 7,238 5,416 1,855
U.S. state and local 835 (279) 515
Non-U.S. 102 656 597
Total deferred expense 8,175 5,793 2,967
Total income tax expense $ 10,981 $ 7,199 $ 6,277