Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2014		Apr. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	$ (35,375)		$ (37,473)
Other comprehensive (loss) income before reclassifications and tax	32,880		34,128
Tax benefit (expense)	(4,063)		(6,842)
Other comprehensive (loss) income before reclassifications, net of tax	28,817		27,286
Balance at January 31, 2014, net of tax	(5,360)		(5,360)
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications, before tax	1,899		7,082
Tax benefit (expense)	(701)		(2,255)
Reclassifications, net of tax	1,198		4,827
Other comprehensive (loss) income, net of tax	30,015		32,113
Balance at January 31, 2014, net of tax	(5,360)		(5,360)
Foreign Currency Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	45,303	[1]	50,411	[1]
Other comprehensive (loss) income before reclassifications and tax	21,291	[1]	15,356	[1]
Other comprehensive (loss) income before reclassifications, net of tax	21,291	[1]	15,356	[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	21,291	[1]	16,183	[1]
Balance at January 31, 2014, net of tax	66,594	[1]	66,594	[1]
Pension Benefits [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	(80,442)		(87,712)
Other comprehensive (loss) income before reclassifications and tax	11,314		18,436
Tax benefit (expense)	(3,967)		(6,725)
Other comprehensive (loss) income before reclassifications, net of tax	7,347		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	1,985		6,505
Tax benefit (expense)	(725)		(2,339)
Reclassifications, net of tax	1,260	[2]	4,166	[2]
Other comprehensive (loss) income, net of tax	8,607		15,877
Balance at January 31, 2014, net of tax	(71,835)		(71,835)
Derivative Financial Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Beginning Balance, net of tax	(236)		(172)
Other comprehensive (loss) income before reclassifications and tax	275		336
Tax benefit (expense)	(96)		(117)
Other comprehensive (loss) income before reclassifications, net of tax	179		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	(86)		(250)
Tax benefit (expense)	24		84
Reclassifications, net of tax	(62)		(166)
Other comprehensive (loss) income, net of tax	117	[3]	53	[3]
Balance at January 31, 2014, net of tax	$ (119)		$ (119)

[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 K) 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 L).