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VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES, Narrative (Details)

v3.20.1
VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES, Narrative (Details)
£ / shares in Units, $ in Thousands, £ in Millions
1 Months Ended 12 Months Ended
Apr. 30, 2015
Jul. 31, 2014
Dec. 31, 2013
Mar. 31, 2020
USD ($)
Affiliate
shares
Mar. 31, 2020
GBP (£)
shares
Mar. 31, 2020
EUR (€)
shares
Apr. 19, 2019
EUR (€)
Mar. 31, 2019
USD ($)
Mar. 14, 2019
EUR (€)
May 31, 2004
USD ($)
shares
May 31, 2004
£ / shares
Apr. 30, 2004
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Number of variable interest entities | Affiliate       5                
Deferred interest accrued | $       $ 832       $ 17,174        
Caledonia Investments Plc                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Ownership percentage in VIE       46.00%                
European Union                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Ownership percentage in VIE       5.00%                
Nigerian Company owned by 100% Nigerian Employees                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Ownership percentage in VIE       50.00%                
VIE, qualitative or quantitative information, purchased percentage from third party 2.00% 29.00% 19.00%                  
Employee Trust Fund                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Ownership percentage in VIE       2.00%                
Bristow Aviation Holdings Limited                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Class of shares, number | shares       3 3 3            
Ownership percentage in variable interest entity, third party       49.00%                
Purchase of deferred stock shares | shares                   8,000,000    
Business acquisition share price | £ / shares                     £ 1  
Principal amount of subordinated unsecured loan stock       $ 112,800 £ 91              
Interest rate on unsecured loan       13.50%                
Total amount paid for deferred shares | $                   $ 14,400    
Deferred interest accrued | $       $ 2,697,878       $ 2,399,704        
Purchase price | €             € 920,000          
Bristow Aviation Holdings Limited | Call Option                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Common Stock value | €           € 1,000,000            
Call option guaranteed rate       3.00% 3.00% 3.00%            
Bristow Aviation Holdings Limited | Put option                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Call option guaranteed rate                       10.00%
Bristow Aviation Holdings Limited | E.U. Investor                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Purchase price | €                 € 100,000      
Bristow Helicopters Nigeria Ltd                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Ownership percentage in VIE       48.00%                
VIE, qualitative or quantitative information, purchased percentage from third party 8.00%                      
Pan African Airlines Nigeria Ltd                        
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]                        
Ownership percentage in VIE       50.17%