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Earnings (Loss) Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  | 1 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 21, 2020 | Jun. 30, 2020 | Jun. 30, 2020 | Jun. 15, 2020 | Apr. 20, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |
Number of warrants issuable under agreement (up to) |  |  |  |  | 4,600,000 |
Number of securities called by warrants (in shares) |  | 4,200,000 | 4,200,000 |  |  |
Warrant exercise price (in dollars per share) |  |  |  |  | $ 31.50 |
Warrant term |  |  |  |  | 5 years |
Available borrowing amount under the CARES Act |  |  |  |  | $ 4,500 |
Number of warrants issuable if the full amount is borrowed under the CARES Act (in shares) |  |  |  |  | 14,200,000 |
Par value of common stock (in dollars per share) |  | $ 0.01 | $ 0.01 |  |  | $ 0.01
Proceeds from the issuance of common stock |  |  | $ 1,100 |  |  |
Public Offering |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Number of shares issued (in shares) | 39,250,000 |  |  |  |  |
Par value of common stock (in dollars per share) | $ 0.01 |  |  |  |  |
Sale price (in dollars per share) | $ 26.50 |  |  |  |  |
Over-Allotment Option |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Number of shares issued (in shares) | 3,925,000 |  |  |  |  |
Over-allotment option period | 30 days |  |  |  |  |
Equity Distribution Agreement |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Number of shares issued (in shares) |  | 500,000 |  |  |  |
Sale price (in dollars per share) |  |  |  | $ 41.05 |  |
Proceeds from the issuance of common stock |  | $ 22 |  |  |  |
Number of shares issuable under Equity Distribution Agreement (up to) (in shares) |  |  |  | 28,000,000 |  |

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