Taxes - Summary of Unrecognized Income Tax Benefits and Taxes Other Than on Income (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Changes to company's unrecognized tax benefits
Beginning balance	$ 5,452	$ 5,323	$ 5,288
Foreign currency effects	0	(27)	(2)
Additions based on tax positions taken in current year	236	248	30
Additions for tax positions taken in prior years	101	265	234
Reductions based on tax positions taken in current year	(54)	(104)	0
Reductions for tax positions taken in prior years	(883)	(251)	(117)
Settlements with taxing authorities in current year	0	(2)	(110)
Ending balance	$ 4,852	$ 5,452	$ 5,323

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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- Definition

Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

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