Capital Stock - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended			36 Months Ended
	Oct. 01, 2014	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2012	Oct. 01, 2014	Mar. 19, 2014	Sep. 28, 2011
Capital Unit [Line Items]
Cumulative Preferred Stock, shares authorized share		160,000
Cumulative Preferred Stock, par value		$ 1.00
Cumulative Preferred Stock, issued		0
Shares authorized in buyback program						7,000,000	7,000,000
Shares repurchased		12,195,359	3,983,513
Treasury Stock Repurchased During the Fiscal Year, Shares		8,211,846	1,324,762	2,658,751
Treasury Stock Acquired, Average Cost Per Share	$ 33	$ 35	$ 32	$ 24	$ 32
Treasury Stock, Value		$ 388,627	$ 104,915
Anti-dilutive securities-equity based compensation plans (excluded from earnings per share calculation)		522,000	619,000	2,582,000
Common Class A
Capital Unit [Line Items]
Common stock, shares authorized		168,000,000	168,000,000
Common stock, par value		$ 0.20	$ 0.20
Common stock, shares issued		78,480,780	77,001,144
Common stock, shares outstanding		66,285,421
Common Class B
Capital Unit [Line Items]
Common stock, shares authorized		1,500,000
Common stock, par value		$ 0.20
Common stock, shares issued		0
Common stock, shares outstanding			0
Subsequent Event [Member]
Capital Unit [Line Items]
Shares authorized in buyback program	7,000,000				7,000,000
Shares repurchased	14,000,000				14,000,000
Treasury Stock Repurchased During the Fiscal Year, Shares	1,804,641
Treasury Stock, Value	$ 447,100				$ 447,100