Quarterly report pursuant to Section 13 or 15(d)

Debt - (Senior Notes) (Details)

v3.20.2
Debt - (Senior Notes) (Details) - USD ($)
$ in Millions
Oct. 23, 2020
Oct. 14, 2020
Jun. 06, 2019
Oct. 07, 2020
Sep. 30, 2020
2021 Senior Notes | Senior notes          
Debt Instrument [Line Items]          
Interest rate     6.75%    
Repayments of Long-term Debt     $ 325.0    
Senior notes          
Debt Instrument [Line Items]          
Aggregate unamortized premium         $ 18.5
Senior notes | 2024 Senior Notes          
Debt Instrument [Line Items]          
Debt issued     $ 325.0    
Interest rate     6.625%    
Senior notes | 2025 Senior Notes          
Debt Instrument [Line Items]          
Interest rate     6.875%    
Senior notes | Subsequent Event | 2024 Senior Notes          
Debt Instrument [Line Items]          
Repayments of Long-term Debt $ 325.0        
Senior notes | Subsequent Event | 2028 Senior Notes          
Debt Instrument [Line Items]          
Debt issued       $ 600.0  
Interest rate       4.75%  
Senior notes | Subsequent Event | 2025 Senior Notes          
Debt Instrument [Line Items]          
Repayments of Long-term Debt   $ 450.0