Income Taxes - Reconciliation of Income Tax Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Gross tax contingencies – beginning of period	$ 5,228	$ 4,002	$ 3,242
Gross increases to tax positions in prior periods	154	440	274
Gross decreases to tax positions in prior periods	(129)	(38)	(172)
Gross increases to current period tax positions	1,392	1,009	706
Settlements with tax authorities	(9)	(106)	(20)
Lapse of statute of limitations	(151)	(79)	(28)
Gross tax contingencies - end of period	6,485	$ 5,228	$ 4,002
Tax contingencies, that if fully recognized, would decrease our effective tax rate	$ 4,400

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 taken in prior period tax returns.

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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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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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