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Share and Incentive-Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
Feb. 28, 2017
Oct. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Successor        
Share and Incentive Based Compensation Arrangement        
Performance units vesting period   3 years    
Performance units weighted average grant date fair value   $ 100    
Successor | Restricted Stock        
Share and Incentive Based Compensation Arrangement        
Shares granted 600,000 1,400,000 603,000  
Vesting period 2 years 6 months      
Share-based compensation expense     $ 3.6  
Share-based compensation, capitalized     0.5  
Unrecognized compensation cost related to unvested awards     $ 35.2  
Unrecognized compensation cost, period of recognition     2 years 6 months  
Value of shares granted (in usd per share)     $ 20.21  
Successor | Performance Share Units        
Share and Incentive Based Compensation Arrangement        
Common stock issuable per performance share     1  
Successor | Performance Share Units | Maximum        
Share and Incentive Based Compensation Arrangement        
Shares granted 400,000      
Predecessor | Restricted Stock        
Share and Incentive Based Compensation Arrangement        
Shares granted       0
Vesting period       4 years
Share-based compensation expense       $ 7.4
Share-based compensation, capitalized       $ 0.6
Value of shares granted (in usd per share)       $ 0.00
Accelerated vesting compensation cost       $ 5.3
Accelerated vesting (in shares)       1,300,000