Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Aug. 31, 2012		May 31, 2012		Feb. 29, 2012		Nov. 30, 2011		Aug. 31, 2011	May 31, 2011	Feb. 28, 2011	Nov. 30, 2010	Aug. 31, 2012		Aug. 31, 2011		Aug. 31, 2010
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 514.3		$ 487.5		$ 457.7		$ 474.3		$ 496.2	$ 458.3	$ 416.2	$ 425.0	$ 1,933.7	[1]	$ 1,795.7	[1]	$ 1,626.9	[1]
Gross Profit	210.5	[2]	202.0	[2]	181.9	[2]	193.6	[3]	200.4	189.6	163.9	176.1	788.0		730.0		661.5
Net Income	$ 33.3	[2]	$ 33.6	[2]	$ 19.5	[2]	$ 29.9	[3]	$ 34.2	$ 27.0	$ 19.9	$ 24.4	$ 116.3		$ 105.5		$ 79.6
Basic Earnings per Share	$ 0.78	[2]	$ 0.80	[2]	$ 0.46	[2]	$ 0.71	[3]	$ 0.80	$ 0.63	$ 0.46	$ 0.57	$ 2.75		$ 2.46		$ 1.84
Diluted Earnings per Share	$ 0.78	[2]	$ 0.79	[2]	$ 0.46	[2]	$ 0.70	[3]	$ 0.79	$ 0.62	$ 0.45	$ 0.56	$ 2.72		$ 2.42		$ 1.80

[1] Net sales are attributed to each country based on the selling location.

[2] Gross Profit, Net Income, Basic Earnings per Share, and Diluted Earnings per Share for fiscal 2012 include pre-tax expenses incurred in the closing of the Cochran, GA manufacturing facility and other streamlining activities. The adjustments for these restructuring charges were comprised of the following: a) $10.6 of special charge primarily related to severance and production transfer costs; b) non-cash impairments of $1.2 attributable to the abandonment of usable inventory that will not be transferred to other facilities; and c) incremental costs incurred due to manufacturing inefficiencies directly related to the Cochran facility closure, which amounted to approximately $3.2.

[3] Gross Profit, Net Income, Basic Earnings per Share, and Diluted Earnings per Share for fiscal 2012 include pre-tax expenses related to the realignment of responsibilities primarily within various SD&A departments of $2.7.