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Subsequent Events (Details) - USD ($)
1 Months Ended 6 Months Ended
Jul. 31, 2020
Jun. 30, 2020
Jun. 30, 2019
Subsequent Event [Line Items]      
Proceeds issuance of notes   $ 593,922,000 $ 895,774,000
Subsequent event      
Subsequent Event [Line Items]      
Common stock dividend declared (in dollars per share) $ 0.2335    
Subsequent event | Notes payable | 3.250% notes, issued in July 2020 and due in January 2031      
Subsequent Event [Line Items]      
Face amount of notes $ 350,000,000    
Stated interest rate (as a percent) 3.25%    
Price of par value (as a percent) 108.241%    
Effective yield (as a percent) 2.341%    
Proceeds issuance of notes $ 378,800,000