Restructuring Activities (Schedule of Changes in Restructuring Reserve) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Restructuring reserve, beginning balance	$ 13.1
Additions, net of reversals	18.7	0.3
Cash and non-cash uses	(12.0)
Currency translation	0.1
Restructuring reserve, ending balance	19.9
Climate Solutions [Member]
Restructuring reserve, beginning balance	3.9
Additions, net of reversals	7.5	0.3
Cash and non-cash uses	(4.3)
Currency translation	0.1
Restructuring reserve, ending balance	7.2
Residential Solutions [Member]
Restructuring reserve, beginning balance	1.6
Additions, net of reversals	0.5	0.2
Cash and non-cash uses	(0.5)
Currency translation	0
Restructuring reserve, ending balance	1.6
Industrial Technologies [Member]
Restructuring reserve, beginning balance	4.2
Additions, net of reversals	5.8	(1.1)	[1]
Cash and non-cash uses	(4.6)
Currency translation	0
Restructuring reserve, ending balance	5.4
Security Technologies [Member]
Restructuring reserve, beginning balance	1.7
Additions, net of reversals	3.8	0.8
Cash and non-cash uses	(2.6)
Currency translation	0
Restructuring reserve, ending balance	2.9
Corporate and Other [Member]
Restructuring reserve, beginning balance	1.7
Additions, net of reversals	1.1	0.1
Cash and non-cash uses	0
Currency translation	0
Restructuring reserve, ending balance	$ 2.8

[1] Amount includes the reversal of $6.7 million of previously accrued restructuring charges.