Restructuring Reserves (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Expected Final Year of Payments	2012
Abandonment of Excess Facilities [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Expected Final Year of Payments	2018
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Expected Final Year of Payments	2012
Pre-2011 Restructuring Plans [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	$ 8.0
Costs incurred	2.1
Payments	(2.4)
Ending balance	7.7
Pre-2011 Restructuring Plans [Member] | Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	4.4
Costs incurred	1.5
Payments	(1.5)
Ending balance	4.4
Pre-2011 Restructuring Plans [Member] | Abandonment of Excess Facilities [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	3.6
Costs incurred	0.4
Payments	(0.8)
Ending balance	3.2
Pre-2011 Restructuring Plans [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	0
Costs incurred	0.2
Payments	(0.1)
Ending balance	0.1
2011 Restructuring Plans [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	20.6
Costs incurred	4.7
Reserves reversed	(1.3)
Payments	(12.5)
Currency translation	0.2
Ending balance	11.7
2011 Restructuring Plans [Member] | Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	13.3
Costs incurred	3.3
Reserves reversed	(0.7)
Payments	(10.1)
Currency translation	0.1
Ending balance	5.9
2011 Restructuring Plans [Member] | Abandonment of Excess Facilities [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	3.6
Costs incurred	0.4
Reserves reversed	0
Payments	(1.5)
Currency translation	0.1
Ending balance	2.6
2011 Restructuring Plans [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	3.7
Costs incurred	1.0
Reserves reversed	(0.6)
Payments	(0.9)
Currency translation	0
Ending balance	3.2
2012 Restructuring Plans [Member]
Restructuring Reserve [Roll Forward]
Costs incurred	8.3
Payments	(3.9)
Ending balance	4.4
2012 Restructuring Plans [Member] | Severance [Member]
Restructuring Reserve [Roll Forward]
Costs incurred	6.0
Payments	(2.9)
Ending balance	3.1
2012 Restructuring Plans [Member] | Abandonment of Excess Facilities [Member]
Restructuring Reserve [Roll Forward]
Costs incurred	1.7
Payments	(0.6)
Ending balance	1.1
2012 Restructuring Plans [Member] | Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Costs incurred	0.6
Payments	(0.4)
Ending balance	$ 0.2