Pension, Post-Retirement and Post-Employment Plans - Changes in Funded Status of Pension and SERP Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Change in Fair Value of Plan Assets:
Beginning Balance	$ 278.2
Ending Balance	261.6	$ 278.2
Domestic
Change in Projected Benefit Obligation:
Beginning of period balance	230.5	157.6	$ 137.4
Additions	0.0		0.0
Acquisitions	0.0	82.6	0.0
Service cost	0.0	0.0	0.0
Plan amendments	0.0	0.0	0.0
Interest cost	10.1	6.8	6.9
Plan curtailment	0.0	0.0	0.0
Actuarial loss (gain) due to assumption change	0.0	(11.4)	18.1
Actuarial loss (gain) due to plan experience	5.0	(0.1)	(0.6)
Benefits and expenses paid	(9.2)	(5.0)	(4.2)
Settlement	(22.9)	0.0	0.0
Foreign currency translation	0.0	0.0	0.0
End of period balance	213.5	230.5	157.6
Change in Fair Value of Plan Assets:
Beginning Balance	184.5	134.0	127.0
Acquisitions	0.0	62.5	0.0
Actual return on plan assets, net of expenses	17.9	(7.0)	11.2
Employer contributions	6.2	0.0	0.0
Benefits paid	(9.1)	(5.0)	(4.2)
Settlement	(22.9)	0.0	0.0
Foreign currency translation	0.0	0.0	0.0
Ending Balance	176.6	184.5	134.0
Funded status of plan	(36.9)	(46.0)	(23.6)
Foreign
Change in Projected Benefit Obligation:
Beginning of period balance	112.7	88.3	73.1
Additions	2.7	0.0	0.0
Acquisitions	0.0	22.6	0.0
Service cost	1.8	1.4	0.8
Plan amendments	(6.9)	8.9	0.0
Interest cost	3.1	2.8	3.0
Plan curtailment	(0.1)	0.0	0.0
Actuarial loss (gain) due to assumption change	14.5	0.3	20.2
Actuarial loss (gain) due to plan experience	(2.1)	1.1	1.6
Benefits and expenses paid	(6.6)	(6.6)	(4.3)
Settlement	(2.5)	0.0	(0.5)
Foreign currency translation	(13.6)	(6.1)	(5.6)
End of period balance	103.0	112.7	88.3
Change in Fair Value of Plan Assets:
Beginning Balance	93.7	94.5	88.1
Acquisitions	0.0	8.1	0.0
Actual return on plan assets, net of expenses	11.3	3.1	16.0
Employer contributions	2.5	0.5	0.2
Benefits paid	(6.6)	(6.6)	(3.5)
Settlement	(2.5)	0.0	(0.5)
Foreign currency translation	(13.4)	(5.9)	(5.8)
Ending Balance	85.0	93.7	94.5
Funded status of plan	$ (18.0)	$ (19.0)	$ 6.2