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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Statement of Comprehensive Income [Abstract]    
Net gain arising from remeasurement during the period, tax $ 0.4  
Amortization of prior service benefits included in loss from continuing operations, tax (0.1) $ (0.1)
Amortization of net actuarial gain included in loss from continuing operations, tax (0.3) $ (0.2)
Settlement gains reclassified to loss from continuing operations, tax $ (0.2)