XML 60 R48.htm IDEA: XBRL DOCUMENT v3.19.2
Components of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jan. 01, 2019
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Other comprehensive loss before income tax effect   $ (103.0)   $ (103.0)   $ (104.8)
Income tax effect   4.3   4.3   6.1
Accumulated other comprehensive loss   (98.7)   (98.7)   (98.7)
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Balance, start $ 762.2     762.2 $ 829.6  
Balance, end   709.4 $ 853.1 709.4 853.1  
Defined benefit plan and other postretirement liabilities [Member]            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Other comprehensive loss before income tax effect   (105.4)   (105.4)   (107.3)
Income tax effect   (4.8)   (4.8)   (6.6)
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Balance, start (100.7)     (100.7)    
Impact of ASU 2018-02 (1.3)          
Net amount reclassified to net income (loss)   1.0 2.6 1.3 3.1  
Balance, end   (100.7) (90.8) (100.7) (90.8)  
Unrealized gain (loss) on financial instruments [Member]            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Other comprehensive loss before income tax effect   2.4   2.4   2.5
Income tax effect   0.5   0.5   $ 0.5
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Balance, start 2.0     2.0    
Impact of ASU 2018-02 0.0          
Net amount reclassified to net income (loss)   (0.0) (0.0) (0.1) (0.1)  
Balance, end   2.0 2.1 2.0 2.1  
Accumulated other comprehensive loss [Member]            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Balance, start (98.7)     (98.7) (91.7)  
Impact of ASU 2018-02 $ (1.3)          
Net amount reclassified to net income (loss)   1.0 2.6 1.3 3.0  
Balance, end   $ (98.7) $ (88.7) $ (98.7) $ (88.7)