Fair Value Measurements - Fair Value of Other Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value	$ 31,072	$ 34,727
Fair value	28,527	32,268
Senior notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value	30,999	34,650
Fair value	28,454	32,191
Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value	73	77
Fair value	$ 73	$ 77