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Income Taxes, Reconciliation of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount |  |  |  |  |
Income tax expense (benefit) at statutory rates |  | $ (445) | $ 671 | $ 828 |
U.S. state and Canadian provincial tax expense (benefit), net of federal income tax effect |  | (6) | 104 | 124 |
Permanent differences |  | (8) | (26) | (9) |
CARES Act | [1] | (360) |  |  |
GILTI tax | [2] |  | 115 | 67 |
Lapse of federal statute of limitations |  | (39) |  |  |
Foreign tax credits |  |  | (95) | (50) |
Repatriation withholding tax |  |  | 45 |  |
Change in tax law/Effects of Tax Reform |  | 21 |  | (12) | [2]
Tax effects of income associated with noncontrolling interests |  | (74) | (75) | (49) |
Other, net |  | 8 | (37) | (20) |
Income tax expense (benefit) |  | $ (903) | $ 702 | $ 879 |
Effective Income Tax Rate Reconciliation, Percent |  |  |  |  |
Income tax expense (benefit) at statutory rates (percent) |  | 22.10% | 19.20% | 19.60% |
U.S. state and Canadian provincial tax expense, net of federal income tax effect (percent) |  | 0.30% | 3.00% | 2.90% |
Permanent differences (percent) |  | 0.40% | (0.70%) | (0.20%) |
CARES Act (percent) | [1] | 17.90% |  |  |
GILTI tax (percent) | [2] |  | 3.30% | 1.60% |
Lapse of federal statute of limitations (percent) |  | 1.90% |  |  |
Foreign tax credits (percent) |  |  | (2.70%) | (1.20%) |
Repatriation withholding tax (percent) |  |  | 1.30% |  |
Change in tax law/Effects of Tax Reform (percent) |  | (1.00%) |  | (0.30%) | [2]
Tax effects of income associated with noncontrolling interests (percent) |  | 3.70% | (2.20%) | (1.20%) |
Other, net (percent) |  | (0.40%) | (1.10%) | (0.50%) |
Income tax expense (benefit) (percent) |  | 44.90% | 20.10% | 20.70% |
U.S. [Member] |  |  |  |  |
Effective Income Tax Rate Reconciliation, Amount |  |  |  |  |
Income tax expense (benefit) at statutory rates |  | $ (435) | $ 524 | $ 665 |
U.S. state and Canadian provincial tax expense (benefit), net of federal income tax effect |  | (33) | 16 | 44 |
Permanent differences |  | (23) | (36) | (9) |
CARES Act | [1] | (360) |  |  |
GILTI tax | [2] |  | 115 | 67 |
Lapse of federal statute of limitations |  | (39) |  |  |
Foreign tax credits |  |  | (95) | (50) |
Repatriation withholding tax |  |  | 45 |  |
Change in tax law/Effects of Tax Reform |  | 0 |  | (12) | [2]
Tax effects of income associated with noncontrolling interests |  | (66) | (77) | (49) |
Other, net |  | 7 | (36) | (23) |
Income tax expense (benefit) |  | $ (949) | $ 456 | $ 633 |
Effective Income Tax Rate Reconciliation, Percent |  |  |  |  |
Income tax expense (benefit) at statutory rates (percent) |  | 21.00% | 21.00% | 21.00% |
U.S. state and Canadian provincial tax expense, net of federal income tax effect (percent) |  | 1.60% | 0.70% | 1.40% |
Permanent differences (percent) |  | 1.10% | (1.50%) | (0.30%) |
CARES Act (percent) | [1] | 17.40% |  |  |
GILTI tax (percent) | [2] |  | 4.60% | 2.10% |
Lapse of federal statute of limitations (percent) |  | 1.80% |  |  |
Foreign tax credits (percent) |  |  | (3.80%) | (1.60%) |
Repatriation withholding tax (percent) |  |  | 1.80% |  |
Change in tax law/Effects of Tax Reform (percent) |  | 0.00% |  | (0.40%) | [2]
Tax effects of income associated with noncontrolling interests (percent) |  | 3.20% | (3.10%) | (1.50%) |
Other, net (percent) |  | (0.30%) | (1.40%) | (0.70%) |
Income tax expense (benefit) (percent) |  | 45.80% | 18.30% | 20.00% |
International [Member] |  |  |  |  |
Effective Income Tax Rate Reconciliation, Amount |  |  |  |  |
Income tax expense (benefit) at statutory rates |  | $ (10) | $ 147 | $ 163 |
U.S. state and Canadian provincial tax expense (benefit), net of federal income tax effect |  | 27 | 88 | 80 |
Permanent differences |  | 15 | 10 | 0 |
CARES Act | [1] | 0 |  |  |
GILTI tax | [2] |  | 0 | 0 |
Lapse of federal statute of limitations |  | 0 |  |  |
Foreign tax credits |  |  | 0 | 0 |
Repatriation withholding tax |  |  | 0 |  |
Change in tax law/Effects of Tax Reform |  | 21 |  | 0 | [2]
Tax effects of income associated with noncontrolling interests |  | (8) | 2 | 0 |
Other, net |  | 1 | (1) | 3 |
Income tax expense (benefit) |  | $ 46 | $ 246 | $ 246 |
Effective Income Tax Rate Reconciliation, Percent |  |  |  |  |
Income tax expense (benefit) at statutory rates (percent) |  | (16.10%) | 14.80% | 15.30% |
U.S. state and Canadian provincial tax expense, net of federal income tax effect (percent) |  | 43.50% | 8.90% | 7.50% |
Permanent differences (percent) |  | 24.20% | 1.00% | 0.00% |
CARES Act (percent) | [1] | 0.00% |  |  |
GILTI tax (percent) | [2] |  | 0.00% | 0.00% |
Lapse of federal statute of limitations (percent) |  | 0.00% |  |  |
Foreign tax credits (percent) |  |  | 0.00% | 0.00% |
Repatriation withholding tax (percent) |  |  | 0.00% |  |
Change in tax law/Effects of Tax Reform (percent) |  | 33.90% |  | 0.00% | [2]
Tax effects of income associated with noncontrolling interests (percent) |  | (12.90%) | 0.20% | 0.00% |
Other, net (percent) |  | 1.60% | (0.10%) | 0.30% |
Income tax expense (benefit) (percent) |  | 74.20% | 24.80% | 23.10% |
[1] | See “CARES Act” on page 119 for a discussion of significant changes in tax law in the U.S that were enacted in 2020.
[2] | Relates to the Tax Cuts and Jobs Act of 2017 (Tax Reform), which, among other provisions, resulted in a minimum tax on the income of international subsidiaries (the GILTI tax).

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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the global intangible low-taxed income (GILTI) tax pursuant to Tax Cuts and Jobs Act. + References No definition available. + Details
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