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Long-Term Debt (Details) - USD ($)
3 Months Ended
Feb. 27, 2020
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Long-term Debt [Abstract]        
Payments on long-term debt   $ 150,000,000 $ 0  
Credit facility, amount outstanding   $ 485,000,000    
2.72% Unsecured Senior Notes [Member]        
Long-term Debt [Abstract]        
Interest rate 2.72%      
Maturity Date   Feb. 27, 2020    
Income Approach [Member] | Level 2 [Member]        
Fair Value Measurements [Abstract]        
Estimated fair value of outstanding debt   $ 1,810,159,000   $ 1,421,325,000
Senior Notes outstanding   1,702,493,000   $ 1,369,767,000
Revolving Credit Facility [Member]        
Long-term Debt [Abstract]        
Maximum borrowing capacity   $ 850,000,000    
Credit facility, expiration date   Mar. 27, 2024    
Credit facility, amount outstanding   $ 359,637,000    
Interest rate   1.90%    
Term Loan [Member]        
Long-term Debt [Abstract]        
Debt instrument, frequency of periodic payment   quarterly    
Term loan   $ 343,750,000    
Credit facility, amount outstanding   $ 375,000,000    
Interest rate   2.10%    
Term Loan [Member] | 2.72% Unsecured Senior Notes [Member]        
Long-term Debt [Abstract]        
Payments on long-term debt $ 150,000,000