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Financial Instruments, Risk Management and Fair Value Measurements - Nonrecurring Fair Value (Details) - USD ($) $ in Millions | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] |  |
Non-cash commercial actions for India held for sale business | $ (282.2) | $ 0.0
Disposal Group, Held-for-Sale, Not Discontinued Operations | India Held for Sale Business |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] |  |
Non-cash commercial actions for India held for sale business | (226.8) |
Net assets held for sale | 450.0 |
Fair Value, Measurements, Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] |  |
Net assets related to India held for sale business | 450.0 |
Non-cash commercial actions for India held for sale business | (226.8) |
Total assets | 450.0 |
Assets, fair value adjustment | (226.8) |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] |  |
Net assets related to India held for sale business | 0.0 |
Total assets | 0.0 |
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] |  |
Net assets related to India held for sale business | 0.0 |
Total assets | 0.0 |
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] |  |
Net assets related to India held for sale business | 450.0 |
Total assets | $ 450.0 |

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