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Stockholders' Equity (Narrative) (Details) (USD $)
9 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Oct. 14, 2012
May 27, 2015
Equity [Line Items]        
Number of shares authorized     10,000,000us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased  
Number of shares of common stock repurchased 300,000us-gaap_StockRepurchasedDuringPeriodShares      
Total cost of repurchase $ 14,700,000us-gaap_StockRepurchasedDuringPeriodValue      
Authorization period 2 years      
Payments of Dividends 204,967,000us-gaap_PaymentsOfDividends 189,210,000us-gaap_PaymentsOfDividends    
Common stock, dividends, per share, cash paid $ 0.84us-gaap_CommonStockDividendsPerShareCashPaid      
Equity Grants [Member]        
Equity [Line Items]        
Number of shares of common stock repurchased 200,000us-gaap_StockRepurchasedDuringPeriodShares
/ us-gaap_ShareRepurchaseProgramAxis
= lltc_EquityGrantsMember
     
Total cost of repurchase $ 8,500,000us-gaap_StockRepurchasedDuringPeriodValue
/ us-gaap_ShareRepurchaseProgramAxis
= lltc_EquityGrantsMember
     
Subsequent Event [Member]        
Equity [Line Items]        
Dividends payable, amount per share       $ 0.30us-gaap_DividendsPayableAmountPerShare
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember