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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Statement of Financial Position [Abstract]    
Allowance $ 19.2 $ 24.5
Accumulated depreciation and amortization (1,842.9) (1,633.2)
Accumulated amortization $ (382.3) $ (321.3)
Par value (in dollars per share) $ 1 $ 1
Shares authorized (in shares) 100,000,000 100,000,000.0
Shares issued (in shares) 41,600,000 42,900,000
Shares outstanding (in shares) 41,600,000 42,900,000