Pensions - Summary of Components of Net Postretirement Pensions Expense (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amortization of Gains (Losses)		$ (0.4)
U.S. Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.0		$ 0.0	$ 0.0	$ 0.0
Interest cost	1.9		1.9	5.8	5.7
Defined Benefit Plan, Amortization of Gains (Losses)	(1.4)		(1.7)	(4.2)	(5.1)
Expected return on plan assets	(2.6)		(2.6)	(7.8)	(7.7)
Net postretirement pension expense	0.7		1.0	2.2	3.1
Non-U.S. Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.0		0.1	0.1	0.2
Interest cost	0.4		0.6	1.4	1.6
Defined Benefit Plan, Amortization of Gains (Losses)	(0.2)		(0.1)	(0.5)	(0.5)
Expected return on plan assets	(0.5)		(0.7)	(1.8)	(2.1)
Net postretirement pension expense	$ 0.1		$ 0.1	$ 0.2	$ 0.2