Subsequent Events (Details) - Senior Notes - USD ($) $ in Billions	Aug. 04, 2020	Dec. 12, 2019
Exit Notes, 11.00 Percent Due 2024
Subsequent Events [Abstract]
Face amount of debt		$ 2.1
Subsequent Event [Line Items]
Face amount of debt		$ 2.1
Debt Instrument, Interest Rate, Stated Percentage		11.00%
Senior Notes 8.75 Percent Due 2024 [Member] | Subsequent Event
Subsequent Events [Abstract]
Face amount of debt	$ 0.5
Subsequent Event [Line Items]
Face amount of debt	$ 0.5
Debt Instrument, Interest Rate, Stated Percentage	8.75%