Share-Based Compensation (Tables)

3 Months Ended

Nov. 30, 2013

Share-Based Compensation [Abstract]

Summary Of Type And Fair Value Of Share-Based Compensation Awards

	Three months ended November 30,
	2013			2012
		Grant-Date Fair Value			Grant-Date Fair Value
	# Granted	Per Award		# Granted	Per Award
Stock options	25,394	$	40.42	24,684	$	40.09
RSUs	29,619	$	74.84	25,279	$	74.31
PSUs	13,434	$	74.84	13,072	$	74.31

Schedule Of Assumptions Used In Determining The Fair Value Of The Option Awards

	Grant Year
	2013	2012
Weighted-average dividend yield	0.68%	0.61%
Weighted-average volatility	55.23%	56.26%
Range of risk-free interest rates	1.91%	1.21%
Weighted-average expected lives	7 years	7 years