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Earnings Per Share And Stockholders' Equity - Narrative (Details) $ / shares in Units, $ in Millions |  |  | 1 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 15, 2020 USD ($) | Aug. 08, 2019 $ / shares shares | Jul. 31, 2020 shares | Jun. 30, 2020 | Apr. 30, 2020 shares | Mar. 31, 2020 | Aug. 03, 2020 USD ($) $ / shares shares | Jun. 26, 2020
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Volume weighted average price |  |  |  | 90.00% |  | 90.00% |  |
Volume weighted average price calculation period |  |  |  | 10 days |  | 10 days |  |
Common stock issued (in shares) |  |  | 11,600,000 |  | 17,300,000 |  |  |
Subsequent Event |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Payments of preferred stock dividends | $ | $ 200 |  |  |  |  |  |  |
Common Stock | Warrant |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Warrant, rate conversion |  |  |  |  |  |  |  | 0.125
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% |  |  |  |  |  |

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