Goodwill Rollforward (Detail) $ in Thousands	3 Months Ended
	Oct. 31, 2015 USD ($)
Goodwill
Balance as of July 31, 2015	$ 433,199
Translation adjustments	(2,227)
Balance as of October 31, 2015	430,972
ID Solutions [Member]
Goodwill
Balance as of July 31, 2015	382,786
Translation adjustments	(1,353)
Balance as of October 31, 2015	381,433
Workplace Safety [Member]
Goodwill
Balance as of July 31, 2015	50,413
Translation adjustments	(874)
Balance as of October 31, 2015	$ 49,539