Note 13. Employee Stock Option and Retirement Plans (Detail) - Summary Stock Option Activity (USD $)	3 Months Ended
	Nov. 30, 2011
Balance	6,132,000
Balance (in Dollars per share)	$ 57.28
Granted (in Dollars per share)	$ 94.84
Exercised	(188,000)
Exercised (in Dollars per share)	$ 29.40
Forfeited	(25,000)
Forfeited (in Dollars per share)	$ 71.49
Balance	7,005,000
Balance (in Dollars per share)	$ 63.79
Non-Performance Based [Member]
Granted	419,593
Granted (in Dollars per share)	$ 94.84
Performance Based [Member]
Granted	665,551
Granted (in Dollars per share)	$ 94.84