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Earnings (Loss) Per Share Share Repurchase Information (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 9 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 47.7us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1  
Treasury Stock, Shares, Acquired 2,039,399us-gaap_TreasuryStockSharesAcquired 1,479,626us-gaap_TreasuryStockSharesAcquired
Treasury Stock Acquired, Average Cost Per Share $ 19.40us-gaap_TreasuryStockAcquiredAverageCostPerShare $ 20.32us-gaap_TreasuryStockAcquiredAverageCostPerShare
Fiscal 2014 Share Repurchase Program [Member] [Domain]    
Stock Repurchase Program, Authorized Amount 50us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_StatementScenarioAxis
= bgg_Fiscal2014ShareRepurchaseProgramMemberDomain		  
Fiscal 2015 Share Repurchase Program [Member]    
Stock Repurchase Program, Authorized Amount $ 50us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_StatementScenarioAxis
= bgg_Fiscal2015ShareRepurchaseProgramMember