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Pensions (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
U.S. Benefit Plans      
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 0.0 $ 0.0 $ 0.0
Interest cost 7.6 7.9 7.3
Expected return on plan assets (10.3) (9.1) (8.8)
Amortization of actuarial loss 6.8 5.1 7.5
Total company-sponsored plans 4.1 3.9 6.0
Multi-employer plans 0.2 0.2 0.2
Net periodic pension expense 4.3 4.1 6.2
Non-U.S. Benefit Plan      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 0.2 0.2 0.2
Interest cost 2.1 2.6 2.5
Expected return on plan assets (2.7) (3.6) (2.6)
Amortization of actuarial loss 0.7 0.4 0.8
Total company-sponsored plans 0.3 (0.4) 0.9
Multi-employer plans 0.0 0.0 0.0
Net periodic pension expense $ 0.3 $ (0.4) $ 0.9