v3.26.1
Shareholders Equity Shareholders' Equity (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Beginning balance   $ 3,171.7     $ 3,171.7  
Net income $ 47.0   $ 114.2   29.0 $ 75.0
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (0.1)          
Net other comprehensive income (loss) 0.0   1.6   3.0 2.7
Ending balance 3,217.8       3,217.8  
Net Income (Loss) Attributable to Noncontrolling Interest (3.4)   (0.9)   (5.0) (2.2)
Net Income (Loss) Attributable to Parent 50.4   $ 115.1   34.0 $ 77.2
Share Repurchase Program, Remaining Authorized, Amount $ 175.0       $ 175.0  
Common Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Beginning balance (in shares) 76.5 76.4 76.3 76.2 76.4 76.2
Beginning balance $ 0.8 $ 0.8 $ 0.8 $ 0.8 $ 0.8 $ 0.8
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period   0.1   0.1    
Ending balance (in shares) 76.5 76.5 76.3 76.3 76.5 76.3
Ending balance $ 0.8 $ 0.8 $ 0.8 $ 0.8 $ 0.8 $ 0.8
Additional Paid-in Capital            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Beginning balance 1,139.9 1,134.9 1,118.6 1,113.3 1,134.9 1,113.3
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition 9.2 6.4 6.0 5.6    
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation   (1.4)   (0.3)    
Ending balance 1,149.0 1,139.9 1,124.6 1,118.6 1,149.0 1,124.6
Warrants            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Beginning balance 16.4 16.4 16.4 16.4 16.4 16.4
Ending balance 16.4 16.4 16.4 16.4 16.4 16.4
Retained Earnings            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Beginning balance 2,365.3 2,381.7 1,361.0 1,398.9 2,381.7 1,398.9
Ending balance 2,415.7 2,365.3 1,476.1 1,361.0 2,415.7 1,476.1
Net Income (Loss) Attributable to Parent 50.4 (16.4) 115.1 (37.9)    
AOCI             
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Beginning balance 63.9 60.9 35.3 34.2 60.9 34.2
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax (0.2) (0.2) (0.2) (0.2)    
Net other comprehensive income (loss) 0.2 3.2 1.8 1.3    
Ending balance 63.9 63.9 36.9 35.3 63.9 36.9
Treasury Stock, Common            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Beginning balance (425.1) (425.1) (325.1) (325.1) (425.1) (325.1)
Ending balance (425.1) (425.1) (325.1) (325.1) (425.1) (325.1)
Non-controlling Interest            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Beginning balance 0.5 2.1 4.5 5.8 2.1 5.8
Ending balance (2.9) 0.5 3.6 4.5 $ (2.9) $ 3.6
Net Income (Loss) Attributable to Noncontrolling Interest $ (3.4) $ (1.6) $ (0.9) $ (1.3)