Fair Value Measurements - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Jul. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on write-down of assets held for sale	$ 15,658	$ 0	$ 15,658
Goodwill		620,998		617,236
Long Term and Short Term Debt, Fair Value		238,907		288,055
Long Term and Short Term Debt, Carrying Value		223,732		262,414
Notes payable		75,552		50,613
Workplace Safety Americas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill				183,146
Estimated implied fair value				10,866
Indefinite-Lived Trade Names				25,449
Estimated Fair Value Indefinite Lived Tradenames				14,881
Id Solutions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill				18,225
USD-Denominated Borrowing Credit Revolver [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable		72,000
Notes payable		63,000		39,000
USD-denominated credit facility China [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable		14,946
Notes payable		$ 12,552		$ 11,613