Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Income Tax Expense (Details)

v3.8.0.1
Income Taxes - Reconciliation of Income Tax Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Amount      
Expected U.S. federal income tax expense $ 10,225 $ 8,757 $ 7,765
Increase (decrease) in taxes resulting from:      
State tax expense, net of federal benefit 881 420 438
Tax law changes 2,281 348 289
Changes in prior-period UTBs, including interest 133 (328) (52)
Nondeductible expenses 97 180 40
Affordable housing/energy/other credits (1,406) (1,203) (1,087)
Tax-exempt income, including dividends (672) (562) (539)
Non-U.S. tax rate differential (272) (307) (559)
Share-based compensation (236) 0 0
Other (50) (106) (18)
Total income tax expense $ 10,981 $ 7,199 $ 6,277
Percent      
Expected U.S. federal income tax expense 35.00% 35.00% 35.00%
Increase (decrease) in taxes resulting from:      
State tax expense, net of federal benefit 3.00% 1.70% 2.00%
Tax law changes 7.80% 1.40% 1.30%
Changes in prior-period UTBs, including interest 0.50% (1.30%) (0.20%)
Nondeductible expenses 0.30% 0.70% 0.10%
Affordable housing/energy/other credits (4.80%) (4.80%) (4.90%)
Tax-exempt income, including dividends (2.30%) (2.20%) (2.40%)
Non-U.S. tax rate differential (0.90%) (1.20%) (2.50%)
Share-based compensation (0.80%) 0.00% 0.00%
Other (0.20%) (0.50%) (0.10%)
Total income tax expense 37.60% 28.80% 28.30%