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Debt - Additional Information (Details) - USD ($)
1 Months Ended
Mar. 31, 2008
Apr. 28, 2018
Mar. 31, 2018
Apr. 29, 2017
Jun. 30, 2015
Line of Credit Facility [Line Items]          
Borrowings on revolving credit   $ 16,000,000   $ 59,000,000  
Proceeds used to repay senior notes $ 150,000        
Credit Agreement          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity         $ 1,500,000,000
Credit Agreement | Unsecured Term Loan          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity         1,000,000,000
Borrowings on revolving credit       $ 291,387,000  
Fixed rate       2.24%  
Credit Agreement | Revolving Credit Facility          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity         $ 500,000,000
Credit Agreement | Unsecured Revolving Line of Credit          
Line of Credit Facility [Line Items]          
Borrowings on revolving credit       $ 59,000,000  
Fixed rate       2.19%  
Amended Credit Agreement | Unsecured Term Loan          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity       $ 295,075,000  
Borrowings on revolving credit   $ 276,633,000      
Fixed rate   3.40%      
Amended Credit Agreement | Unsecured Revolving Line of Credit          
Line of Credit Facility [Line Items]          
Maximum borrowing capacity       750,000,000  
Borrowings on revolving credit   $ 16,000,000      
Fixed rate   2.95%      
Senior Notes Due 2028          
Line of Credit Facility [Line Items]          
Fixed rate   3.79%      
Aggregate principal amount   $ 150,000,000 $ 150,000,000 $ 0