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Financial Instruments and Fair Value - Schedule of Assets and Liabilities Not Carried at Fair Value (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Carrying amount    
Derivative [Line Items]    
Borrowings (Note 9) $ 967.8 $ 966.0
Estimated fair value    
Derivative [Line Items]    
Borrowings (Note 9) $ 1,021.2 $ 987.4