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Postretirement and Other Benefits - Net Pension Benefit Costs (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
United States, Pension Benefits [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost $ 0.0 $ 0.0 $ 0.0
Interest cost 5.0 5.6 5.1
Expected return on plan assets (7.0) (7.4) (7.1)
Amortizations and other 5.1 4.2 6.7
Curtailment benefit 0.0 0.0 0.0
Net periodic benefit cost 3.1 2.4 4.7
France, Pension Benefits [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 1.3 1.3 1.3
Interest cost 0.4 0.8 0.8
Expected return on plan assets (0.3) (0.4) (0.4)
Amortizations and other 0.2 0.7 0.5
Curtailment benefit 0.0 0.0 0.0
Net periodic benefit cost 1.6 2.4 2.2
United States, OPEB [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 0.0 0.0 0.1
Interest cost 0.1 0.1 0.1
Expected return on plan assets 0.0 0.0 0.0
Amortizations and other (0.2) (0.5) (0.7)
Curtailment benefit 0.0 (2.7) (3.2)
Net periodic benefit cost $ (0.1) $ (3.1) $ (3.7)