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Financial Instruments - Narrative (Details) - USD ($) $ in Millions |  | 9 Months Ended
--- | --- | ---
Dec. 08, 2023 | Sep. 30, 2025 | Sep. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash settlement |  | $ 419 | $ 697
Follow Up Boss |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash paid for acquisition, net | $ 399 |  |
Contingent consideration | $ 100 |  |
Contingent consideration, payable period | 3 years |  |
Cash settlement |  | $ 33 |

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