Share-Based Payments (Tables)

12 Months Ended

Aug. 31, 2012

Share-based Compensation [Abstract]

Schedule of Restricted Stock Award Activity

Activity related to restricted stock awards during the fiscal year ended August 31, 2012 was as follows:

	Number of Shares		Weighted Average Grant Date Fair Value Per Share
Outstanding at August 31, 2011	0.8		$	40.68
Granted	0.3		$	47.20
Vested	(0.3)		$	38.78
Forfeited	—	*	$	39.82
Outstanding at August 31, 2012	0.8		$	44.11

Schedule of Stock Options, Weighted Average Assumptions

The following weighted average assumptions were used to estimate the fair value of stock options granted in the fiscal years ended August 31:

	2012	2011	2010
Dividend yield	1.0%	1.3%	1.5 - 1.8%
Expected volatility	43.2%	41.8%	40.9 - 41.2%
Risk-free interest rate	1.1%	1.2%	2.1 - 2.5%
Expected life of options	5 years	5 years	5 years
Weighted-average fair value of options	$16.43	$16.95	$11.19 - $13.39

Schedule of Stock Option Transactions

Stock option transactions for the stock option plans and stock option agreements during the years ended August 31, 2012, 2011, and 2010 were as follows:

	Outstanding			Exercisable
	Number of Shares		Weighted Average Exercise Price	Number of Shares		Weighted Average Exercise Price
Outstanding at August 31, 2009	1.7		$24.69	1.3		$22.09
Granted	0.2		$34.44
Exercised	(0.4)		$16.73
Cancelled	—		$—
Outstanding at August 31, 2010	1.5		$27.78	1.1		$26.03
Granted	0.2		$50.56
Exercised	(0.3)		$21.18
Cancelled	(0.1)		$39.57
Outstanding at August 31, 2011	1.3		$31.67	1.0		$28.81
Granted	0.1		$46.29
Exercised	(0.3)		$22.02
Cancelled	—	*	$35.64
Outstanding at August 31, 2012	1.1		$36.25	1.0		$33.06
Range of option exercise prices:
$10.00 – $20.00 (average life – 1.2 years)	—	*	$18.54	—	*	$18.54
$20.01 – $30.00 (average life – 2.3 years)	0.3		$25.59	0.3		$25.59
$30.01 – $40.00 (average life – 5.6 years)	0.4		$34.94	0.4		$35.00
$40.01 – $50.00 (average life – 7.3 years)	0.3		$43.56	0.2		$40.29
$50.01 – $60.00 (average life – 8.1 years)	0.1		$50.56	0.1		$50.56