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Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value total debt	$ 26,800	$ 25,300
Total debt less of carrying value	5,000	5,900
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	$ 20	$ 20

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity), classified as current.

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