Restructuring Plans - Reserve Rollforward (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2013	$ 12.2
Accrual additions	5.6	0.3
Cash payments	(5.9)
Non-cash expense	(0.3)
Balance as of March 31, 2014	11.6
Employee Termination Costs
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2013	9.3
Accrual additions	3.9
Cash payments	(4.4)
Non-cash expense	(0.1)
Balance as of March 31, 2014	8.7
Property Costs
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2013	2.8
Accrual additions	0
Cash payments	(0.1)
Non-cash expense	(0.2)
Balance as of March 31, 2014	2.5
Other
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2013	0.1
Accrual additions	1.7
Cash payments	(1.4)
Non-cash expense	0
Balance as of March 31, 2014	$ 0.4