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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