Quarterly report pursuant to Section 13 or 15(d)

Debt - Schedule of Debt (Details)

v3.20.1
Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Feb. 29, 2020
Jun. 30, 2019
Mar. 31, 2019
Nov. 30, 2014
Oct. 31, 2014
Debt Instrument            
Total debt, gross $ 3,475,000   $ 3,450,000      
Unamortized discount (8,375)   (8,738)      
Unamortized debt issuance costs (22,688)   (17,880)      
Total, net of discount 3,443,937   3,423,382      
Current portion of long-term debt 0   249,999      
Long-term debt 3,443,937   $ 3,173,383      
Senior notes            
Debt Instrument            
Unamortized discount       $ (6,700) $ (4,000)  
Fixed-rate 3.375% Senior Notes due on November 1, 2019 | Senior notes            
Debt Instrument            
Stated interest rate     3.375%      
Total debt, gross $ 0   $ 250,000      
Effective interest rate 0.00%   3.377%      
Fixed-rate 4.125% Senior Notes due on November 1, 2021 | Senior notes            
Debt Instrument            
Stated interest rate     4.125%      
Total debt, gross $ 0   $ 500,000      
Effective interest rate 0.00%   4.128%      
Fixed-rate 4.650% Senior Notes due on November 1, 2024 | Senior notes            
Debt Instrument            
Stated interest rate 4.65%         4.65%
Total debt, gross $ 1,250,000   $ 1,250,000      
Effective interest rate 4.682%   4.682%      
Fixed-rate 5.650% Senior Notes due on November 1, 2034 | Senior notes            
Debt Instrument            
Stated interest rate 5.65%          
Total debt, gross $ 250,000   $ 250,000      
Effective interest rate 5.67%   5.67%      
Fixed-rate 4.100% Senior Notes due on March 15, 2029 | Senior notes            
Debt Instrument            
Stated interest rate 4.10%          
Total debt, gross $ 800,000   $ 800,000      
Effective interest rate 4.159%   4.159%      
Fixed-rate 5.000% Senior Notes due on March 15, 2049 | Senior notes            
Debt Instrument            
Stated interest rate 5.00%          
Total debt, gross $ 400,000   $ 400,000      
Effective interest rate 5.047%   5.047%      
Fixed-rate 3.300% Senior Notes due on March 1, 2050 | Senior notes            
Debt Instrument            
Stated interest rate 3.30% 3.30%        
Total debt, gross $ 750,000   $ 0      
Effective interest rate 3.302%   0.00%      
Unamortized discount   $ (300)        
Revolving credit facility | Line of credit            
Debt Instrument            
Total debt, gross $ 25,000   $ 0      
Effective interest rate 2.74%