Goodwill Rollforward (Detail) $ in Thousands	3 Months Ended
	Oct. 31, 2016 USD ($)
Goodwill
Balance as of July 31, 2016	$ 429,871
Translation adjustments	(5,526)
Goodwill, Transfers	0
Balance as of October 31, 2016	424,345
ID Solutions [Member]
Goodwill
Balance as of July 31, 2016	384,529
Translation adjustments	(4,805)
Goodwill, Transfers	2,490
Balance as of October 31, 2016	382,214
Workplace Safety [Member]
Goodwill
Balance as of July 31, 2016	45,342
Translation adjustments	(721)
Goodwill, Transfers	(2,490)
Balance as of October 31, 2016	$ 42,131