Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014		Jul. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	$ (37,473)		$ (101,888)
Other comprehensive (loss) income before reclassifications and tax	(18,656)
Tax benefit (expense)	4,246
Other comprehensive (loss) income before reclassifications, net of tax	(14,410)
Balance at January 31, 2014, net of tax	(45,810)		(101,888)
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	9,068
Tax benefit (expense)	(2,995)
Reclassifications, net of tax	6,073
Other comprehensive (loss) income, net of tax	(8,337)
Balance at January 31, 2014, net of tax	(45,810)
Foreign Currency Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	50,411	[1]
Other comprehensive (loss) income before reclassifications and tax	(2,949)	[1]
Other comprehensive (loss) income before reclassifications, net of tax	(2,949)	[1]
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	[1]
Reclassifications, net of tax	827	[1]
Other comprehensive (loss) income, net of tax	(2,122)	[1]
Balance at January 31, 2014, net of tax	48,289	[1]
Pension Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	(87,712)
Other comprehensive (loss) income before reclassifications and tax	(16,120)
Tax benefit (expense)	4,391
Other comprehensive (loss) income before reclassifications, net of tax	(11,729)
Pension Benefits [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	8,514
Tax benefit (expense)	(3,071)
Reclassifications, net of tax	5,443	[2]
Other comprehensive (loss) income, net of tax	(6,286)
Balance at January 31, 2014, net of tax	(93,998)
Derivative Financial Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	(172)
Other comprehensive (loss) income before reclassifications and tax	413
Tax benefit (expense)	(145)
Other comprehensive (loss) income before reclassifications, net of tax	268
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	(273)
Tax benefit (expense)	76
Reclassifications, net of tax	(197)
Other comprehensive (loss) income, net of tax	71	[3]
Balance at January 31, 2014, net of tax	$ (101)

[1] 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.

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

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