CONSOLIDATED STATEMENTS OF STOCKHOLDERS' INVESTMENT (USD $)	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ (154,535,000)	$ (17,911,000)	$ 108,652,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(3,446,000)	(55,307,000)	62,995,000
Share-based Compensation	1,736,000	9,735,000	9,830,000
Payments for Repurchase of Common Stock	5,121,000	49,933,000	0
Payments of Ordinary Dividends, Common Stock	39,243,000	38,899,000	38,064,000
Common Stock, Value, Issued	548,000	548,000	548,000
Additional paid-in capital	306,191,000	313,008,000	307,527,000
Earnings retained in the business	538,512,000	732,290,000	789,100,000
Treasury Stock, Value	(69,797,000)	(92,600,000)	(50,017,000)
Accumulated other comprehensive income	56,063,000	59,411,000	113,898,000
Other	(720,000)	(3,304,000)	(4,864,000)
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, Stock Options Exercised	(9,721,000)	(3,516,000)	(5,684,000)
Stockholders' Equity, Other	(1,266,000)	(1,637,000)	(1,964,000)
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	2,434,000	1,167,000	1,140,000
Share-based Compensation	1,736,000	9,467,000	9,830,000
Class B voting common stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Payments of Ordinary Dividends, Common Stock	(2,630,000)	(2,559,000)	(2,489,000)
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(154,535,000)	(17,911,000)	108,652,000
Treasury Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, Stock Options Exercised	30,045,000	7,380,000	13,877,000
Stockholders' Equity, Other	(2,121,000)	(30,000)	2,420,000
Payments for Repurchase of Common Stock	(5,121,000)	(49,933,000)
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(3,348,000)	(54,487,000)	62,993,000
Common Class A [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Payments of Ordinary Dividends, Common Stock	(36,613,000)	(36,340,000)	(35,575,000)
Equity Securities, Other [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity, Other	$ 2,584,000	$ 1,560,000	$ (2,035,000)