Operating Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Y lawsuit agreement contract shareholders segment	Sep. 30, 2010
Financial information of reportable segments
Number of operating segments (in number of segments)			12
Number of reportable segments (in number of segments)			3
Net sales	$ 1,736.1	$ 1,561.9	$ 4,953.2	$ 4,514.2
Operating Income	239.6	245.1	589.6	603.2
Subtotal at fixed currency
Financial information of reportable segments
Net sales	1,679.7	1,589.9	4,834.6	4,540.7
Operating Income	233.3	249.2	578.6	612.3
United States
Financial information of reportable segments
Net sales	882.7	836.5	2,540.3	2,377.7
Operating Income	178.6	168.3	464.1	453.5
U.S. Cleaning and Sanitizing
Financial information of reportable segments
Net sales	763.1	718.9	2,197.0	2,040.5
Operating Income	157.7	148.6	412.6	400.6
U.S. Other Services
Financial information of reportable segments
Net sales	119.6	117.6	343.3	337.2
Operating Income	20.9	19.7	51.5	52.9
International
Financial information of reportable segments
Net sales	797.0	753.4	2,294.3	2,163.0
Operating Income	88.1	80.5	204.2	177.2
Corporate
Financial information of reportable segments
Operating Income	(33.4)	0.4	(89.7)	(18.4)
Effect of foreign currency translation
Financial information of reportable segments
Net sales	56.4	(28.0)	118.6	(26.5)
Operating Income	$ 6.3	$ (4.1)	$ 11.0	$ (9.1)