v3.25.4
Consolidated Statements of Equity - USD ($)
$ in Millions
Total
SN [Member]
Temporary Equity
Parent [Member]
Common Stock [Member]
Common Class A [Member]
Common Stock [Member]
Common Class B [Member]
Treasury Stock, Common
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Translation Adjustment [Member]
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Accumulated Defined Benefit Plans Adjustment [Member]
Noncontrolling Interest [Member]
Permanent Equity
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Temporary Equity [Abstract]                              
Redeemable Noncontrolling Interest, Equity, Carrying Amount     $ 14.2                        
Balance at Dec. 31, 2022       $ 204.4 $ 0.1 $ 0.1 $ 0.0 $ 297.7 $ 152.7 $ (137.0) $ (37.7) $ (71.5) $ 6.5 $ 210.9  
Stock-based Compensation                              
Stock-based compensation       29.3       29.3           29.3  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture             0.1 (0.1)              
Treasury Stock Transactions                              
Treasury Stock, Value, Acquired, Cost Method $ (0.1)     (0.1)     (0.1)                
Retained Earnings                              
Net income attributable to stockholders 125.9     125.9         125.9     (3.0)     $ (30.9)
Cash dividends:                              
Dividends, Common Stock, Cash       (22.3)         (22.3)         (22.7)  
Accumulated other comprehensive income (loss)                              
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax (2.2)                   (2.2)        
Foreign currency translation adjustment 18.7                            
Current period pension adjustment, net 1.5                            
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax 0.1                            
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax (0.1)                            
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax 0.2                            
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax       18.0           18.7   1.5   18.0  
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax       33.9               3.0   33.9 30.9
Noncontrolling Interests                              
Net Income (Loss) Attributable to Noncontrolling Interest                         0.6    
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders                         (0.4)    
Noncontrolling Interest, Decrease from Sale (0.7)                       (0.7)    
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest 0.0   (0.1)                   0.1 0.1  
Net income (loss) 128.1                         126.5  
Balance at Dec. 31, 2023       389.9 0.1 0.1 0.0 327.7 256.3 (118.3) (9.0) (67.0) 2.1 392.0  
Temporary Equity [Abstract]                              
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests       0.8       0.8         (4.0) (3.2)  
Accrued dividend to redeemable noncontrolling interests 0.9   (0.9)                        
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest (0.7)   0.7                        
Revenues 4,118.3 $ 0.4                          
Redeemable Noncontrolling Interest, Equity, Carrying Amount     14.8                        
Stock-based compensation       23.6       23.6           23.6  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture       14.0     0.4 (14.4)           14.0  
Treasury Stock, Value, Acquired, Cost Method 0.0     0.0     (14.0) 14.0              
Net income attributable to stockholders 142.3     142.3         142.3     (3.4)     (27.3)
Dividends, Common Stock, Cash       (24.0)         (24.0)         (24.4)  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax (30.7)                   (30.7)        
Foreign currency translation adjustment (43.2)                            
Current period pension adjustment, net 0.5                     0.5      
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax 0.2                            
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax 0.1                            
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax (0.1)                            
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax       (73.4)           (43.2)       (73.4)  
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax       30.7               3.4   30.7 27.3
Net Income (Loss) Attributable to Noncontrolling Interest                         0.7    
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders                         (0.4)    
Noncontrolling Interest, Increase from Business Combination                         0.0    
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest (0.2)   (0.2)                   0.0 0.0  
Net income (loss) 144.2                         143.0  
Balance at Dec. 31, 2024 479.2     475.1 0.1 0.1 (13.6) 350.9 374.6 (161.5) (12.4) (63.1) 4.1 479.2  
Temporary Equity [Abstract]                              
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests       0.0       0.0         1.7 1.7  
Accrued dividend to redeemable noncontrolling interests 0.9   (0.9)                        
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest (0.3)   0.3                        
Revenues 4,308.2                            
Redeemable Noncontrolling Interest, Equity, Carrying Amount 14.9   14.9                        
Stock-based compensation       7.5       7.5           7.5  
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture       4.5     3.7 (8.2)           4.5  
Treasury Stock, Value, Acquired, Cost Method 0.0     0.0     (4.5) 4.5              
Net income attributable to stockholders (60.1)     (60.1)         (60.1)     (3.5)     0.9
Dividends, Common Stock, Cash       (25.4)         (25.4)         (25.8)  
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax 17.2                            
Foreign currency translation adjustment 58.0                            
Current period pension adjustment, net 1.6                     1.6      
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax (0.1)                            
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax (0.0)                            
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax 0.1                            
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax       76.8           58.0       76.8 17.2
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax       2.6               3.5   2.6 $ (0.9)
Net Income (Loss) Attributable to Noncontrolling Interest                         0.3    
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders     (0.9)                   (0.4)    
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest 0.4   0.3                   0.1 0.1  
Net income (loss) (58.0)                         (59.8)  
Balance at Dec. 31, 2025 476.3     472.0 $ 0.1 $ 0.1 $ (14.4) $ 354.7 $ 289.1 $ (103.5) $ 3.9 $ (58.0) 4.3 476.3  
Temporary Equity [Abstract]                              
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests       $ 0.0                 $ 0.2 $ 0.2  
Accrued dividend to redeemable noncontrolling interests 0.9                            
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest (0.9)   0.9                        
Revenues 3,769.3                            
Redeemable Noncontrolling Interest, Equity, Carrying Amount $ 16.1   $ 16.1