Restructuring Plans - Summary of Restructuring Charges and Accrual (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Reserve [Roll Forward]
Beginning balance			$ 9.5
Additional accruals	$ 4.2	$ 5.2	6.9	$ 13.4
Cash payments			(7.3)
Ending balance	9.1		9.1
Employee Termination Costs
Restructuring Reserve [Roll Forward]
Beginning balance			7.3
Additional accruals	2.5		4.8
Cash payments			(6.2)
Ending balance	5.9		5.9
Property Costs
Restructuring Reserve [Roll Forward]
Beginning balance			0.8
Additional accruals	0.0		0.4
Cash payments			(0.9)
Ending balance	0.3		0.3
Other
Restructuring Reserve [Roll Forward]
Beginning balance			1.4
Additional accruals	1.7		1.7
Cash payments			(0.2)
Ending balance	$ 2.9		$ 2.9