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Segment Information - Net Income Reconciliation (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Apr. 30, 2015
Apr. 30, 2014
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]        
Total profit from reportable segments $ 53,906brc_ProfitForReportableSegments $ 59,073brc_ProfitForReportableSegments $ 161,407brc_ProfitForReportableSegments $ 180,608brc_ProfitForReportableSegments
Unallocated amounts:        
Administrative costs (24,787)brc_AdministrativeCosts (29,267)brc_AdministrativeCosts (79,347)brc_AdministrativeCosts (91,604)brc_AdministrativeCosts
Restructuring charges (4,834)us-gaap_RestructuringCharges (3,039)us-gaap_RestructuringCharges (13,991)us-gaap_RestructuringCharges (14,202)us-gaap_RestructuringCharges
Investment and other income 434brc_NonoperatingInvestmentAndOtherIncomeNet 872brc_NonoperatingInvestmentAndOtherIncomeNet 968brc_NonoperatingInvestmentAndOtherIncomeNet 1,887brc_NonoperatingInvestmentAndOtherIncomeNet
Interest expense (2,503)us-gaap_InterestExpense (3,381)us-gaap_InterestExpense (8,394)us-gaap_InterestExpense (10,777)us-gaap_InterestExpense
Earnings from continuing operations before income taxes $ 22,216us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ 24,258us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ 60,643us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ 65,912us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments