Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2026	Dec. 31, 2025
Fair Value
Total assets measured at fair value	$ 783	$ 707
Total liabilities measured at fair value	$ 42	0
Investment maturity	10 years
Quoted Prices in Active Markets (Level 1)
Fair Value
Cash equivalents and money market funds	$ 61	91
Equity securities	91	88
Significant Other Observable Inputs (Level 2)
Fair Value
Available-for-sale securities	631	528
Interest rate derivatives	$ 42	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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