CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013		Jul. 31, 2012		Jul. 31, 2011
Statement of Comprehensive Income [Abstract]
Net earnings	$ 574,935		$ 319,309		$ 315,496
Other comprehensive income/(loss), net of income taxes:
Foreign currency translation	(13,065)		(109,815)		110,229
Pension liability adjustment	39,233		(42,613)		10,746
Unrealized investment gains/(losses)	(1,481)	[1]	(5,896)	[1]	4,076	[1]
Unrealized gains/(losses) on derivatives	(2,572)		270		0
Total other comprehensive income/(loss), net of income taxes	22,115		(158,054)		125,051
Comprehensive income	$ 597,050		$ 161,255		$ 440,547

[1] The unrealized gains (losses) on available-for-sale securities, net of related taxes, consisted of the following: 2013 2012 2011Net unrealized gains/(losses) arising during the period, net of tax (expense)/benefit of $790, $(260) and $(2,292) in 2013, 2012 and 2011, respectively$(1,416) $56 $4,076Reclassification adjustment for gain included in net earnings (65) (5,952) —Other comprehensive income$(1,481) $(5,896) $4,076