Reorganization Costs (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($) divisions	Mar. 31, 2015 USD ($)
Restructuring and Related Cost [Line Items]
Reorganization costs	$ 3.3	$ 15.2
Reorganization cost incurred to date	346.7
Restructuring Reserve [Roll Forward]
Reorganization Reserve Opening liability	25.1
Amounts charged to re-organization	3.3	$ 15.2
Reorganization liability, Paid and Utilized	(23.7)
Reorganization Reserve Closing liability	$ 4.7
Number of divisions | divisions	3
Involuntary termination benefits
Restructuring and Related Cost [Line Items]
Reorganization costs	$ 3.3
Restructuring Reserve [Roll Forward]
Reorganization Reserve Opening liability	15.0
Amounts charged to re-organization	3.3
Reorganization liability, Paid and Utilized	(13.6)
Reorganization Reserve Closing liability	4.7
Other reorganization costs
Restructuring and Related Cost [Line Items]
Reorganization costs	0.0
Restructuring Reserve [Roll Forward]
Reorganization Reserve Opening liability	10.1
Amounts charged to re-organization	0.0
Reorganization liability, Paid and Utilized	(10.1)
Reorganization Reserve Closing liability	$ 0.0