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Earnings Per Share - Reconciliation of Weighted-Average Shares (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]        
Net Income (Loss) Attributable to Parent $ 115.1 $ 149.6 $ 77.2 $ 175.1
Basic (in shares) 71.1 72.4 71.1 72.4
Effect of stock equivalents (in shares) 0.2 1.3 0.2 1.3
Diluted (in shares) 71.3 73.7 71.3 73.7