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Share-Based Compensation and Equity - Additional Information (Details) shares in Thousands | 5 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2018 USD ($) | Jul. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of installment anniversaries |  |  | 3 |  |
Unrecognized compensation expense |  |  | $ 55,000,000 |  |
Unrecognized compensation expense, weighted average period |  |  | 1 year 6 months 18 days |  |
RSUs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation | $ 2,000,000 | $ 17,000,000 | $ 18,000,000 |  | $ 17,000,000
Stock Appreciation Rights (SARs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation |  |  | $ 0 | $ 0 | $ 0
Number of equity awards granted (in shares) | shares |  |  | 80 |  |
Vesting period |  |  | 3 years |  |
Expiration term |  |  | 10 years |  |
One-time Accelerated Tranche | RSUs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation |  | $ 7,000,000 |  |  |

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