Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Gross unrecognized tax benefits, January 1	$ 2,593	$ 2,161	$ 2,042
Additions based on tax positions related to the current year	396	546	380
Additions based on tax positions related to prior years	201	1	56
Reductions for tax positions of prior years	(268)	(43)	(145)
Reductions due to expiration of statutes of limitations	(29)	(56)	(148)
Settlements with tax authorities and other	(28)	(15)	(24)
Gross unrecognized tax benefits, December 31	$ 2,865	$ 2,593	$ 2,161

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.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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

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