Investments - Other Long-Term Investments (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Schedule of Investments [Line Items]
Other long-term investments	$ 4,884
Real estate investments
Schedule of Investments [Line Items]
Other long-term investments	1,800	$ 1,763
Securities partnerships
Schedule of Investments [Line Items]
Other long-term investments	2,896	$ 2,587
Other
Schedule of Investments [Line Items]
Other long-term investments	$ 188

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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