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Debt - Long-Term Debt (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 28, 2018
Mar. 31, 2018
Apr. 29, 2017
Debt Instrument [Line Items]      
Less: Deferred debt issuance costs $ (3,005)   $ (3,361)
Total 998,628   1,013,026
Less: current debt obligations (76,598)   (14,754)
Long-term debt $ 922,030   998,272
Senior Notes 5.75%      
Debt Instrument [Line Items]      
Fixed rate 5.75%    
Fixed rate senior notes due fiscal 2018 to 2025 $ 0   150,000
Senior Notes 2.95%      
Debt Instrument [Line Items]      
Fixed rate 2.95%    
Fixed rate senior notes due fiscal 2018 to 2025 $ 60,000   60,000
Senior Notes 3.74%      
Debt Instrument [Line Items]      
Fixed rate 3.74%    
Fixed rate senior notes due fiscal 2018 to 2025 $ 100,000   100,000
Senior Notes 3.59%      
Debt Instrument [Line Items]      
Fixed rate 3.59%    
Fixed rate senior notes due fiscal 2018 to 2025 $ 165,000   165,000
Senior Notes 3.48%      
Debt Instrument [Line Items]      
Fixed rate 3.48%    
Fixed rate senior notes due fiscal 2018 to 2025 $ 250,000   250,000
Senior Notes 3.79%      
Debt Instrument [Line Items]      
Fixed rate 3.79%    
Fixed rate senior notes due fiscal 2018 to 2025 $ 150,000 $ 150,000 0
Term Loan      
Debt Instrument [Line Items]      
Fixed rate 3.40%    
Fixed rate senior notes due fiscal 2018 to 2025 $ 276,633   $ 291,387
Term Loan | LIBOR      
Debt Instrument [Line Items]      
Interest rate 1.50%