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Stock Repurchase Program (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended 12 Months Ended
Feb. 09, 2015
Mar. 28, 2015
Mar. 29, 2014
Dec. 27, 2014
Equity, Class of Treasury Stock [Line Items]        
Share repurchase plan, authorized amount $ 75us-gaap_StockRepurchaseProgramAuthorizedAmount $ 430us-gaap_StockRepurchaseProgramAuthorizedAmount    
Stock repurchased of common stock, shares   6.1us-gaap_StockRepurchasedDuringPeriodShares 1.4us-gaap_StockRepurchasedDuringPeriodShares  
Share repurchase plan, authorized amount available 102.1pmcs_StockRepurchaseProgramAuthorizedAmountAvailable 385.1pmcs_StockRepurchaseProgramAuthorizedAmountAvailable    
Shares repurchased and retired, value   57.2us-gaap_StockRepurchasedAndRetiredDuringPeriodValue 8.9us-gaap_StockRepurchasedAndRetiredDuringPeriodValue  
2012 Stock Repurchase Program [Member]        
Equity, Class of Treasury Stock [Line Items]        
Share repurchase plan, authorized amount       275us-gaap_StockRepurchaseProgramAuthorizedAmount
/ us-gaap_ShareRepurchaseProgramAxis
= pmcs_TwoThousandAndTwelveStockRepurchaseProgramMember
Share repurchase plan, authorized amount available $ 27.1pmcs_StockRepurchaseProgramAuthorizedAmountAvailable
/ us-gaap_ShareRepurchaseProgramAxis
= pmcs_TwoThousandAndTwelveStockRepurchaseProgramMember