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Income Tax Reconciliation of the tax provision at the U.S. Federal Statutory Rate (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Contingency [Line Items] |  |  |
Tax provision at the U.S. federal statutory rate, Amount | $ 4,685 | $ 4,356 | $ 3,776
Tax provision at the U.S. federal statutory rate, Percent | 21.00% | 21.00% | 21.00%
State income taxes, net of federal benefit, Amount | $ 419 | $ 315 | $ 271
State income taxes, net of federal benefit, Percent | 1.90% | 1.50% | 1.50%
Share-based awards - excess tax benefit, Amount | $ (100) | $ (130) | $ (132)
Share-based awards - excess tax benefit, Percent | (0.40%) | (0.60%) | (0.70%)
Non-deductible compensation, Amount | $ 144 | $ 134 | $ 119
Non-deductible compensation, Percent | 0.60% | 0.70% | 0.70%
Health insurance industry tax, Amount | $ 0 | $ 626 | $ 0
Health insurance industry tax, Percent | 0.00% | 3.00% | 0.00%
Foreign rate differential, Amount | $ (246) | $ (164) | $ (214)
Foreign rate differential, Percent | (1.10%) | (0.80%) | (1.20%)
Other, net, Amount | $ (324) | $ (164) | $ (78)
Other, net, Percent | (1.50%) | (0.80%) | (0.50%)
Total provision for income taxes | $ 4,578 | $ 4,973 | $ 3,742
Provision for income taxes, Percent | 20.50% | 24.00% | 20.80%

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