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Net Income Per Share (Narrative) (Details) - $ / shares
shares in Millions
3 Months Ended 6 Months Ended
Oct. 02, 2016
Sep. 27, 2015
Oct. 02, 2016
Sep. 27, 2015
Oct. 29, 2015
Earnings Per Share [Abstract]          
Shares excluded from calculation because they were anti-dilutive (in shares) 0.5 0.7 0.5 0.5  
Convertible debt | 0.875% Convertible Senior Notes Due 2022          
Debt Instrument [Line Items]          
Interest rate 0.875%   0.875%   0.875%
Stock price trigger to convert convertible debt (in dollars per share)     $ 33.45    
Warrant          
Debt Instrument [Line Items]          
Initial strike price of warrants (usd per share) $ 48.66   $ 48.66