Income And Other Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income and Other Taxes [Line Items]
Net deferred income tax expense (credits)/changes for tax rate and law changes	$ 64	$ (28)	$ 24
U.S. federal statutory theoretical tax (percent)	21.00%	21.00%	21.00%
Income taxes paid	$ 11,563	$ 13,293	$ 15,473
Valuation Allowance [Abstract]
Asset valuation allowances	2,649	2,516
Valuation allowance change	$ 133
Income Tax, Interest Recognition, Classification [Extensible Enumeration]	Interest expense
Interest expense on income tax reserves	$ 99	142	$ 60
Interest payable on income tax reserves	365	$ 275
Change in net provisions
Valuation Allowance [Abstract]
Valuation allowance change	(39)
Effects of foreign currency translation
Valuation Allowance [Abstract]
Valuation allowance change	$ 172

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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The amount of estimated interest accrued as of the balance sheet date arising from income tax examinations.

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The amount of estimated interest recognized in the period arising from income tax examinations.

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Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity.

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Indicates classification of interest expense for underpayment of income tax in financial statement.

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Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income and Other Taxes [Line Items]

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