Stock-Based Compensation (Tables)

6 Months Ended

Feb. 29, 2012

Stock-Based Compensation [Abstract]

Summary Of Stock Option And Stock Appreciation Right Activity

	Shares Available for Grant			Options Outstanding			Aggregate Intrinsic Value (in thousands)		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (years)
Balance at August 31, 2011		9,164,425			10,473,033		$	4,029	$	24.76		3.70
Options cancelled		357,491			(357,491	)			$	26.21
Options expired		(53,274	)						$	15.23
Restricted stock awards(1)		(4,994,492	)
Options exercised					(807,371	)			$	16.43
Balance at February 29, 2012		4,474,150			9,308,171		$	17,092	$	25.49		3.35
Exercisable at February 29, 2012					9,283,523		$	16,772	$	25.52		3.34

⁽¹⁾  Represents the maximum number of shares that can be issued based on the achievement of certain performance criteria.

Summary Of Restricted Stock Activity

	Shares			Weighted - Average Grant-Date Fair Value
Non-vested balance at August 31, 2011		14,097,278		$	12.91
Changes during the period
Shares granted (1)		5,212,914		$	19.42
Shares vested		(5,564,666	)	$	9.99
Shares forfeited		(218,422	)	$	15.13
Non-vested balance at February 29, 2012		13,527,104		$	16.58

⁽¹⁾  For those shares granted that are based on the achievement of certain performance criteria, represents the maximum number of shares that can vest.