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Income Taxes - Reconciliation of Income Tax Expense Computed Using U.S. Statutory Federal Tax Rate to Actual Income Tax Expense (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Amount |  |  |
Income tax expense at the U.S. federal statutory tax rate | $ 1,585 | $ 1,729 | $ 1,521
Foreign derived intangible income deduction | (170) | (170) | (122)
Research and development tax credit | (118) | (97) | (148)
Tax deductible dividends | (65) | (64) | (62)
Excess tax benefits for stock-based payment awards | (28) | (52) | (63)
Other, net | 31 | 1 | (115)
Total federal and foreign income tax expense | $ 1,235 | $ 1,347 | $ 1,011
Rate |  |  |
Income tax expense at the U.S. federal statutory tax rate | 21.00% | 21.00% | 21.00%
Foreign derived intangible income deduction | (2.30%) | (2.10%) | (1.70%)
Research and development tax credit | (1.60%) | (1.20%) | (2.00%)
Tax deductible dividends | (0.90%) | (0.80%) | (0.90%)
Excess tax benefits for stock-based payment awards | (0.40%) | (0.60%) | (0.90%)
Other, net | 0.60% | 0.10% | (1.50%)
Income tax expense | 16.40% | 16.40% | 14.00%
Foreign derived intangible income deduction related to prior year |  |  | $ 98

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