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Financial Instruments and Fair Value Measurements - Narrative (Details) - USD ($)
Sep. 30, 2025
Dec. 31, 2024
Sep. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Assets $ 1,267,800,000 $ 1,299,000,000 $ 1,388,800,000
Liabilities 1,171,100,000 $ 1,249,100,000  
Fair Value, Inputs, Level 3 | Fair Value, Recurring      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Assets 0    
Liabilities $ 0