Restructuring Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010	Dec. 31, 2009
Restructuring and related cost, incurred cost	$ 24.3		$ 45.3	$ 109.0
Restructuring Reserve, Current	13.1		28.0	53.1
Industrial Technologies [Member]
Restructuring and related cost, incurred cost	6.7	[1]	17.9	27.1
Restructuring Reserve, Accrual Adjustment	6.7
Restructuring Reserve, Current	4.2		10.1	4.3
Security Technologies [Member]
Restructuring and related cost, incurred cost	(0.3)	[2]	3.1	23.9
Restructuring Reserve, Accrual Adjustment	2.2
Restructuring Reserve, Current	$ 1.7		$ 8.1	$ 18.2

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

[2] Amount includes the reversal of $2.2 million of previously accrued restructuring charges.