Stock-Based Compensation (Tables)

9 Months Ended

May. 31, 2015

Stock-Based Compensation [Abstract]

Summary of Stock Option and Stock Appreciation Right Activity

The following table summarizes shares available for grant and stock option and stock appreciation right activity from August 31, 2014 through May 31,2015:

								Weighted-
						Weighted-		Average
		Shares		Average		Average		Remaining
		Available	Options	Intrinsic Value		Exercise		Contractual
		for Grant	Outstanding	(in thousands)		Price		Life (years)
Balance at August 31, 2014		10,823,646	5,432,002	$	400	$	26.32	1.52
	Options granted	(435,000)	435,000			$	18.49
	Options canceled	1,818,653	(1,818,653)			$	24.82
	Restricted stock awards granted (a)	(3,863,323)	―
	Options exercised	―	(267,971)			$	20.29
Balance at May 31, 2015		8,343,976	3,780,378	$	5,092	$	26.57	1.79
Exercisable at May 31, 2015			3,780,378	$	5,092	$	26.57	1.79
(a)	Represents the maximum number of shares that can be issued based on the achievement of certain performance criteria.

Summary of Restricted Stock Activity

	The following table summarizes restricted stock activity from August 31, 2014 through May 31, 2015:
					Weighted-
					Average
					Grant-Date
				Shares	Fair Value
		Unvested balance at August 31, 2014		9,800,942	$	19.89
		Changes during the period
			Shares granted (a)	5,272,177	$	18.63
			Shares vested	(1,596,465)	$	19.64
			Shares forfeited	(1,408,854)	$	19.59
		Unvested balance at May 31, 2015		12,067,800	$	19.44
(a)	For those shares granted that are based on the achievement of certain performance criteria, represents the maximum number of shares that can vest.