Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments measured using NAV practical expedient	$ 6	$ 6
Fair Value, Inputs, Level 1 \| Mutual Fund \| Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investments measured using NAV practical expedient	5	$ 20
Fair Value, Inputs, Level 3 \| Mutual Fund \| Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain related to observable price changes	$ 390

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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+ Details