Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Summary of AOCI Activity (Details)

v3.10.0.1
Stockholders' Equity - Summary of AOCI Activity (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 01, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance $ 550.0 $ 550.0 $ 623.5 $ 624.0
Other comprehensive income (loss)   3.5 7.3 (7.6)
Ending balance   391.0 550.0 623.5
Foreign currency translation adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax Cuts And Jobs Act, reclassification from AOCI to Acumulated deficit 0.0      
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance 7.7 7.7 0.5  
Other comprehensive (loss) before reclassifications, net of tax impact   (6.0) 7.2  
Amounts reclassified from accumulated other comprehensive income   0.0 0.0  
Other comprehensive income (loss)   (6.0) 7.2 (8.2)
Ending balance   1.7 7.7 0.5
AOCI tax (expense) benefit   0.0 0.0  
Derivative Adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax Cuts And Jobs Act, reclassification from AOCI to Acumulated deficit   0.1    
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (1.0) (1.0) 0.5  
Other comprehensive (loss) before reclassifications, net of tax impact   1.4 (1.9)  
Amounts reclassified from accumulated other comprehensive income   (0.3) 0.4  
Other comprehensive income (loss)   1.7 (1.5) (1.6)
Ending balance   0.8 (1.0) 0.5
AOCI tax (expense) benefit   (0.5) 0.7  
Pension and postretirement adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax Cuts And Jobs Act, reclassification from AOCI to Acumulated deficit   (12.7)    
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (59.2) (59.2) (60.8)  
Other comprehensive (loss) before reclassifications, net of tax impact   1.2 (5.4)  
Amounts reclassified from accumulated other comprehensive income   6.6 7.0  
Other comprehensive income (loss)   7.8 1.6 2.2
Ending balance   (64.1) (59.2) (60.8)
AOCI tax (expense) benefit   1.0 1.2  
Accumulated other comprehensive (loss) income        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Tax Cuts And Jobs Act, reclassification from AOCI to Acumulated deficit   (12.6)    
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance $ (52.5) (52.5) (59.8) 2.0
Other comprehensive (loss) before reclassifications, net of tax impact   (3.4) (0.1)  
Amounts reclassified from accumulated other comprehensive income   6.9 7.4  
Other comprehensive income (loss)   3.5 7.3 (7.6)
Ending balance   (61.6) (52.5) $ (59.8)
AOCI tax (expense) benefit   $ 0.5 $ 1.9