Earnings Per Share And Stockholders' Equity - Narrative (Details) $ / shares in Units, $ in Millions			1 Months Ended
	Jul. 15, 2020 shares	Aug. 08, 2019 $ / shares shares	Mar. 31, 2020	Aug. 03, 2020 USD ($) $ / shares shares	Jun. 26, 2020
Class of Stock [Line Items]
Volume weighted average price			90.00%
Volume weighted average price calculation period			10 days
Subsequent Event
Class of Stock [Line Items]
Common stock issued to holders of Preferred Stock (in shares)	11,600,000
Common Stock | Warrant
Class of Stock [Line Items]
Warrant, rate conversion					0.125
Common Stock | Subsequent Event | Warrant
Class of Stock [Line Items]
Warrants issued (in shares)				116,000,000
Exercise price of warrant (usd per share) | $ / shares				$ 22.00
Fair value of Common Stock Warrants | $				$ 767
Anadarko | Series A Preferred Stock
Class of Stock [Line Items]
Issued as part of the Merger (in shares)		100,000
Face value (in usd per share) | $ / shares		$ 100,000
Preferred stock accrual rate per annum		8.00%
Preferred stock accrual rate per annum on unpaid amounts		9.00%