Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Apr. 30, 2015		Apr. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	$ (45,810)		$ (37,473)
Other comprehensive (loss) income before reclassifications and tax	(85,759)		34,128
Tax benefit (expense)	(3,384)		(6,842)
Other comprehensive (loss) income before reclassifications, net of tax	(89,143)		27,286
Ending Balance, net of tax	(129,665)
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	6,649	[1]	7,082
Tax benefit (expense)	(1,361)		(2,255)
Reclassifications, net of tax	5,288		4,827
Other comprehensive (loss) income, net of tax	(83,855)		32,113
Ending Balance, net of tax	(129,665)		(5,360)
Foreign Currency Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	48,289	[2]	50,411	[2]
Other comprehensive (loss) income before reclassifications and tax	(102,609)	[2]	15,356	[2]
Other comprehensive (loss) income before reclassifications, net of tax	(102,609)	[2]	15,356	[2]
Foreign Currency Translation Adjustment [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax			827	[2]
Reclassifications, net of tax			827	[2]
Other comprehensive (loss) income, net of tax	(102,609)	[2]	16,183	[2]
Ending Balance, net of tax	(54,320)	[2]	66,594	[2]
Pension Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	(93,998)		(87,712)
Other comprehensive (loss) income before reclassifications and tax	18,813		18,436
Tax benefit (expense)	(4,071)		(6,725)
Other comprehensive (loss) income before reclassifications, net of tax	14,742		11,711
Pension Benefits [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	6,829		6,505
Tax benefit (expense)	(1,411)		(2,339)
Reclassifications, net of tax	5,418	[3]	4,166	[3]
Other comprehensive (loss) income, net of tax	20,160		15,877
Ending Balance, net of tax	(73,838)		(71,835)
Derivative Financial Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	(101)		(172)
Other comprehensive (loss) income before reclassifications and tax	(1,963)		336
Tax benefit (expense)	687		(117)
Other comprehensive (loss) income before reclassifications, net of tax	(1,276)		219
Derivative Financial Instruments [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	(180)		(250)
Tax benefit (expense)	50		84
Reclassifications, net of tax	(130)	[4]	(166)	[4]
Other comprehensive (loss) income, net of tax	(1,406)		53
Ending Balance, net of tax	$ (1,507)		$ (119)

[1] Reclassification adjustments out of accumulated other comprehensive income for the three months ended April 30, 2015 and 2014 were not material.

[2] Taxes are not provided on cumulative translation adjustments as substantially all translation adjustments relate to earnings that are intended to be indefinitely reinvested outside the U.S. Amounts were reclassified from accumulated other comprehensive loss to other income, net.

[3] Primarily includes net amortization of prior service costs and actuarial losses included in net periodic benefit cost (see Note K) that were reclassified from accumulated other comprehensive loss to operating expenses or cost of sales.

[4] Relates to foreign currency cash flow hedges that were reclassified from accumulated other comprehensive loss to other income, net (see Note M).