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Segment Information - Schedule of Segment Reporting Information By Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Segment Reporting Information [Line Items]
Sales to External Customers	$ 282,628us-gaap_SalesRevenueGoodsNet	$ 291,194us-gaap_SalesRevenueGoodsNet	$ 592,868us-gaap_SalesRevenueGoodsNet	$ 598,724us-gaap_SalesRevenueGoodsNet
Segment Profit	48,495brc_ProfitForReportableSegments	52,194brc_ProfitForReportableSegments	107,501brc_ProfitForReportableSegments	121,535brc_ProfitForReportableSegments
Id Solutions [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	192,065	194,732	404,162	404,278
Segment Profit	35,719	37,526	79,186	88,493
Workplace Safety [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	90,563	96,462	188,706	194,446
Segment Profit	$ 12,776	$ 14,668	$ 28,315	$ 33,042