Employee Benefits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Defined Pension and Postretirement Benefit Plans
Net actuarial (losses) gains for the period	$ (79.2)	$ 2.8	$ (78.4)	$ 8.5
Domestic Pension Plan
Defined Pension and Postretirement Benefit Plans
Service cost	0.0	0.0	0.0	0.0
Interest cost	1.4	(4.1)	4.4	(1.1)
Expected return on plan assets	(1.5)	(1.8)	(4.9)	(5.6)
Settlements and curtailments	0.0	0.0	0.0	0.0
Amortization of:
Prior service cost (credit)	0.0	0.0	0.0	0.0
Unrecognized actuarial losses	0.3	0.3	1.0	4.4
Net periodic cost	0.2	(5.6)	0.5	(2.3)
Foreign Pension Plans
Defined Pension and Postretirement Benefit Plans
Service cost	2.4	2.7	7.3	7.6
Interest cost	4.1	4.9	13.3	14.3
Expected return on plan assets	(4.9)	(5.3)	(15.5)	(15.6)
Settlements and curtailments	0.1	(0.2)	0.3	0.0
Amortization of:
Prior service cost (credit)	0.1	0.0	0.1	0.1
Unrecognized actuarial losses	0.9	1.1	2.7	3.1
Net periodic cost	2.7	3.2	8.2	9.5
Pension plan - employer contributions			20.3
Pension plan - estimated employer contributions for remainder of current fiscal year			5.0
Domestic Postretirement Benefit Plan
Defined Pension and Postretirement Benefit Plans
Service cost	0.0	0.0	0.0	0.0
Interest cost	0.4	0.5	1.1	1.2
Expected return on plan assets	0.0	0.0	0.0	0.0
Settlements and curtailments	0.0	0.0	0.0	0.0
Amortization of:
Prior service cost (credit)	(0.1)	(0.1)	(0.1)	(0.1)
Unrecognized actuarial losses	0.0	0.0	0.0	0.0
Net periodic cost	$ 0.3	$ 0.4	$ 1.0	$ 1.1