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Employee Benefit Plans - Net Periodic Expense (Income) and Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Jul. 02, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Defined Benefit Plan, Net Periodic Benefit Cost            
Recognized pre-tax actuarial losses $ 6.6 $ 4.2 $ 1.8      
United States            
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets            
Projected benefit obligation 320.9 357.1   $ 320.9 $ 357.1  
Accumulated benefit obligation 320.9 357.1   320.9 357.1  
Fair value of plan assets 238.0 269.7   238.0 269.7  
Accumulated benefit obligation $ 320.9 $ 357.1   320.9 357.1  
Defined Benefit Plan, Net Periodic Benefit Cost            
Service cost       0.0 0.3 $ 0.4
Interest cost       12.3 13.4 13.9
Expected return on plan assets       (10.3) (10.1) (12.9)
Amortization of unrecognized prior service credits       (0.2) (0.1) (0.2)
Recognized net actuarial losses       (0.2) 3.9 3.2
Total net periodic pension benefit expense       $ 1.6 $ 7.4 $ 4.4
Weighted-average actuarial assumptions used in determining net periodic pension expense:            
Discount rate used in determining net periodic postretirement benefit expense       3.57% 3.98% 4.06%
Rate of increase in compensation levels (as a percent)         3.75% 3.75%
Expected long-term rate of return on assets (as a percent)       4.00% 4.00% 5.00%
Weighted-average actuarial assumptions used in determining year-end benefit obligations:            
Discount rate used in determining year-end postretirement benefit obligation 4.29% 3.57%   4.29% 3.57% 3.98%
Rate of increase in compensation levels (as a percent)   3.75%     3.75% 3.75%
Foreign Plan            
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets            
Projected benefit obligation $ 43.6 $ 0.2   $ 43.6 $ 0.2  
Accumulated benefit obligation 43.6 0.2   43.6 0.2  
Fair value of plan assets 41.3 0.0   41.3 0.0  
Accumulated benefit obligation $ 158.2 $ 175.2   158.2 175.2  
Defined Benefit Plan, Net Periodic Benefit Cost            
Service cost       0.0 0.0 $ 0.0
Interest cost       4.7 4.9 5.6
Expected return on plan assets       (7.5) (6.4) (6.6)
Recognized net actuarial losses       9.1 3.1 8.2
Total net periodic pension benefit expense       6.3 1.6 7.2
Less: Net periodic pension expense of discontinued operations       0.0 0.0 (0.2)
Net periodic pension benefit expense of continuing operations       $ 6.3 $ 1.6 $ 7.0
Weighted-average actuarial assumptions used in determining net periodic pension expense:            
Discount rate used in determining net periodic postretirement benefit expense       2.76% 2.97% 3.82%
Expected long-term rate of return on assets (as a percent)       4.50% 4.09% 4.57%
Weighted-average actuarial assumptions used in determining year-end benefit obligations:            
Discount rate used in determining year-end postretirement benefit obligation 3.02% 2.76%   3.02% 2.76% 2.97%