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Subsequent Events (Details)
$ in Millions
May 07, 2020
USD ($)
Subsequent Event [Line Items]  
Debt Instrument, Face Amount $ 2,250 [1]
2023 Notes [Member]  
Subsequent Event [Line Items]  
Debt Instrument, Face Amount $ 500 [1]
Debt Instrument, Interest Rate, Stated Percentage 8.375%
Debt Instrument, Payment Terms Semi-Annual
2025 Notes [Member]  
Subsequent Event [Line Items]  
Debt Instrument, Face Amount $ 750 [1]
Debt Instrument, Interest Rate, Stated Percentage 8.625%
Debt Instrument, Payment Terms Semi-Annual
Total Notes [Member]  
Subsequent Event [Line Items]  
Debt Instrument, Face Amount $ 1,000 [1]
2027 Notes [Member]  
Subsequent Event [Line Items]  
Debt Instrument, Interest Rate, Stated Percentage 8.875%
Debt Instrument, Payment Terms Semi-Annual
[1]
Includes an option to call the Notes in whole or in part at any time, subject to a make whole premium.