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Income Taxes - Income Tax Expense (Benefit) Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax expense at U.S. federal statutory income tax rate	$ 2,084	$ 2,260	$ 2,397
State and local tax expense (benefit)	348	388	301
Non-U.S. income taxed at other than the U.S. federal statutory tax rate	203	32	36
U.S. tax impact on Non-U.S. income and activities	(62)	5	129
Change in valuation allowances	(1,061)	(392)	665
Change in tax laws	25	78	(93)
General business credits and manufacturing incentives	(966)	(829)	(492)
Settlements of prior year tax matters	23	0	11
Realization of basis differences in affiliates	0	209	(295)
Foreign currency remeasurement	(62)	36	28
Other adjustments	31	102	84
Total income tax expense (benefit)	$ 563	$ 1,888	$ 2,771

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- Definition

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 credits (or reversals of expired tax credits). Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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Effective Income Tax Rate Reconciliation, Foreign Currency Remeasurement, Amount

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the realization of basis differences in affiliates.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to repatriation of foreign earnings, unremitted foreign earnings, and U.S. taxes on other non-U.S. income in the period.

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

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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 increase (decrease) in the valuation allowance for deferred tax assets.

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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 increase (decrease) in the income tax rates.

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