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Significant Accounting Policies - Principal of Consolidation and Fresh Start Accounting (Details)
1 Months Ended 11 Months Ended 12 Months Ended
Dec. 31, 2018
Nov. 19, 2018
Dec. 31, 2019
Dec. 31, 2017
Variable Interest Entity [Line Items]        
Financial designation Successor and Predecessor Successor Predecessor Successor Predecessor
Pacific International Drilling West Africa Limited        
Variable Interest Entity [Line Items]        
Percentage of ownership in joint venture     49.00%  
Derotech Offshore Services Limited | Pacific International Drilling West Africa Limited        
Variable Interest Entity [Line Items]        
Percentage of ownership in joint venture     51.00%  
Pacific International Drilling West Africa Limited | PDNL        
Variable Interest Entity [Line Items]        
Percentage of ownership in joint venture     99.90%  
Pacific International Drilling West Africa Limited | Pacific Bora Ltd and Pacific Scirocco Ltd        
Variable Interest Entity [Line Items]        
Percentage of ownership in joint venture     50.10%  
PDL | PDNL        
Variable Interest Entity [Line Items]        
Percentage of ownership in joint venture     0.10%  
PDL | Pacific Bora Ltd and Pacific Scirocco Ltd        
Variable Interest Entity [Line Items]        
Percentage of ownership in joint venture     49.90%  
PDNL | Pacific Bora Ltd and Pacific Scirocco Ltd        
Variable Interest Entity [Line Items]        
Percentage of ownership in joint venture     50.10%