CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Statement of Comprehensive Income [Abstract]
Net earnings	$ 71,513	$ 339,472
Other comprehensive income, net of income taxes:
Foreign currency translation	43,227	33,752
Pension liability adjustment	(594)	1,188
Unrealized investment gains/(losses)	(82)	407
Unrealized gains/(losses) on derivatives	2,455	(1,952)
Total other comprehensive income, net of income taxes	45,006	33,395
Comprehensive income	$ 116,519	$ 372,867