Quarterly report pursuant to Section 13 or 15(d)

Debt - (Senior Notes) (Details)

v3.19.3
Debt - (Senior Notes) (Details) - USD ($)
Sep. 30, 2019
Jun. 06, 2019
Dec. 31, 2018
Debt Instrument [Line Items]      
Debt issued $ 2,872,727,000    
Aggregate outstanding principal $ 2,990,383,000   $ 2,886,034,000
2021 Senior Notes | Senior Notes      
Debt Instrument [Line Items]      
Interest rate 6.75%    
Aggregate outstanding principal $ 325,000,000    
Senior Notes      
Debt Instrument [Line Items]      
Debt issued 775,000,000    
Aggregate unamortized premium $ 22,000,000.0    
Senior Notes | 2024 Senior Notes      
Debt Instrument [Line Items]      
Debt issued   $ 325,000,000  
Interest rate   6.625%  
Senior Notes | 2025 Senior Notes      
Debt Instrument [Line Items]      
Interest rate 6.875%