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Stockholders' Equity - AOCI (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period $ 323,400,000 $ (22,100,000) $ 285,800,000
Foreign currency translation adjustments (51,700,000) 39,800,000 (80,100,000)
Total other comprehensive income 1,600,000 400,000 2,400,000
Balance at end of period 559,000,000.0 323,400,000 (22,100,000)
Foreign Currency Translation      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period (135,500,000) (175,300,000) (95,200,000)
Foreign currency translation adjustments (51,700,000) 39,800,000 (80,100,000)
Balance at end of period (187,200,000) (135,500,000) (175,300,000)
Tax expense 0 0 0
Net amount reclassified to earnings 0 0 0
Pension Benefits      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period (1,200,000) (1,600,000) (4,000,000.0)
Net change from period revaluation 2,100,000 500,000 3,200,000
Tax expense (500,000) (100,000) (800,000)
Balance at end of period $ 400,000 $ (1,200,000) $ (1,600,000)