Note 13. Employee Stock Option and Retirement Plans (Detail) - Summary of Share-Based Awards Available For Grant In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2012
Share-based awards canceled/forfeited*	(12)
Employee Option Plan [Member]
Balance	4,340
Granted – non performance-based options	(635)
Granted – performance-based options	(1,012)
Share-based awards canceled/forfeited*	13	[1]
Balance	2,706
Non-Employee Stock Option Plan [Member]
Balance	126
Granted – non performance-based options	0
Granted – performance-based options	0
Share-based awards canceled/forfeited*	0	[1]
Balance	126

[1] Under the Company's option plan, for each restricted stock award canceled/forfeited, an equivalent of 2.5 shares is added back to the available share-based awards balance.