Fair Value Measurements - Schedule of Fair Value and Carrying Value of Long-Term Debt (Details) - Level 2 - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt (including current maturities)	$ 16,576	$ 17,528
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt (including current maturities)	$ 18,508	$ 18,533

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

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