Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Billions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate	21.00%	21.00%	21.00%
Effect of foreign operations	(5.40%)	2.40%	(8.40%)
U.S. tax credits	(2.80%)	(10.60%)	(3.30%)
Impacts related to U.S. tax reform	0.00%	(1.10%)	(1.60%)
Non-deductible expenses	0.30%	7.20%	1.00%
Tax law changes and related restructuring	(2.00%)	(48.50%)	3.10%
Tax audit settlements	(0.40%)	(5.10%)	(4.70%)
All other, net	0.40%	(1.30%)	(0.60%)
Effective tax rate	11.10%	(36.00%)	6.50%
Amount of net tax benefit related to changes in tax laws and related restructuring, including certain intra-group transfers of intellectual property and deferred tax remeasurement		$ 1.7

Effective income tax rate impacts related to U.S. tax reform

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Amount 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 tax law changes and related restructuring.

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No definition available.

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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 tax law changes and related restructuring expenses.

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Represents the portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to accrual of U.S. tax credits under enacted tax laws.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 applicable to statutory income tax expense (benefit) outside of the country of domicile.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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 income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements.

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