Fair Value Measurements (Details) - Level 1 - Senior notes - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Senior notes	$ 8,827	$ 8,821
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Senior notes	$ 8,791	$ 8,518

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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+ Details