Investments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Contributions to investments	$ 13,856	$ 16,448	$ 5,051
Proceeds from investments	4,743	15,739	10,619
Time Deposits
Schedule of Equity Method Investments [Line Items]
Contributions to investments	13,258	15,794	4,358
Proceeds from investments	$ 4,053	$ 15,140	$ 9,943

The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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