ACQUISITION AND DISPOSITION	9 Months Ended
Dec. 31, 2018
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	ACQUISITION AND DISPOSITION Columbia Helicopters — On February 11, 2019, we announced that our agreement to acquire Columbia Helicopters, Inc. (“Columbia”) had been terminated by mutual agreement of the parties. In connection with the termination, we paid $20 million to Columbia, which will be included as expense in our condensed consolidated statements of operations for the three months ended March 31, 2019. Upon termination of the acquisition agreement, the financing agreements related to the acquisition also terminated pursuant to their respective terms. Due to the termination of the acquisition agreement, the amendment to the indenture for the 8.75% Senior Secured Notes, for which the Company obtained the requisite consent of holders of such notes in connection with the planned acquisition financing, did not become operative, and the related consent fees did not become payable. Eastern Airways and Humberside Airport — Bristow Helicopters Limited, an indirect consolidated affiliate of the Company (“Bristow Helicopters”), together with its legal and financial advisors, pursued various transactions to exit the Eastern Airways business, which made negative contributions to our Adjusted EBITDA in each of the last three fiscal years, including pursuing a sales process with several third parties over an extended period. On May 10, 2019, Bristow Helicopters completed the sale of all of the shares of Eastern Airways to Orient Industrial Holdings Limited (“OIHL”), an entity affiliated with Mr. Richard Lake, pursuant to a Sale and Purchase Agreement (the “EAIL Purchase Agreement”). Pursuant to the EAIL Purchase Agreement and related agreements, Bristow Helicopters contributed approximately £17.1 million to Eastern Airways as working capital, OIHL acquired Eastern Airways, Bristow Helicopters retained its controlling ownership of the shares in Humberside International Airport Limited that it previously held through Eastern Airways and certain intercompany balances between Bristow Helicopters and Eastern Airways were written off. As a result of the transaction, OIHL now owns and operates Eastern Airways, which had previously operated as a separate unit within Bristow Group, and Bristow Helicopters maintains its controlling interest in Humberside Airport, from which Bristow Helicopters provides U.K. SAR services. The EAIL Purchase Agreement contained customary representations and warranties. OIHL agreed to certain covenants with respect to non-solicitation of directors, officers or employees of Bristow Helicopters for a period of 12 months. Pursuant to the terms of the EAIL Purchase Agreement, Bristow Helicopters has the right to appoint an observer to the board of directors of Eastern Airways for an initial period of 12 months following the sale. Eastern Airways also agreed to provide certain transition services for a minimum of 12 months from the date of the completion of the transaction.

ACQUISITION AND DISPOSITION

Columbia Helicopters — On February 11, 2019, we announced that our agreement to acquire Columbia Helicopters, Inc. (“Columbia”) had been terminated by mutual agreement of the parties. In connection with the termination, we paid $20 million to Columbia, which will be included as expense in our condensed consolidated statements of operations for the three months ended March 31, 2019. Upon termination of the acquisition agreement, the financing agreements related to the acquisition also terminated pursuant to their respective terms. Due to the termination of the acquisition agreement, the amendment to the indenture for the 8.75% Senior Secured Notes, for which the Company obtained the requisite consent of holders of such notes in connection with the planned acquisition financing, did not become operative, and the related consent fees did not become payable.

Eastern Airways and Humberside Airport — Bristow Helicopters Limited, an indirect consolidated affiliate of the Company (“Bristow Helicopters”), together with its legal and financial advisors, pursued various transactions to exit the Eastern Airways business, which made negative contributions to our Adjusted EBITDA in each of the last three fiscal years, including pursuing a sales process with several third parties over an extended period. On May 10, 2019, Bristow Helicopters completed the sale of all of the shares of Eastern Airways to Orient Industrial Holdings Limited (“OIHL”), an entity affiliated with Mr. Richard Lake, pursuant to a Sale and Purchase Agreement (the “EAIL Purchase Agreement”). Pursuant to the EAIL Purchase Agreement and related agreements, Bristow Helicopters contributed approximately £17.1 million to Eastern Airways as working capital, OIHL acquired Eastern Airways, Bristow Helicopters retained its controlling ownership of the shares in Humberside International Airport Limited that it previously held through Eastern Airways and certain intercompany balances between Bristow Helicopters and Eastern Airways were written off. As a result of the transaction, OIHL now owns and operates Eastern Airways, which had previously operated as a separate unit within Bristow Group, and Bristow Helicopters maintains its controlling interest in Humberside Airport, from which Bristow Helicopters provides U.K. SAR services.

The EAIL Purchase Agreement contained customary representations and warranties. OIHL agreed to certain covenants with respect to non-solicitation of directors, officers or employees of Bristow Helicopters for a period of 12 months. Pursuant to the terms of the EAIL Purchase Agreement, Bristow Helicopters has the right to appoint an observer to the board of directors of Eastern Airways for an initial period of 12 months following the sale. Eastern Airways also agreed to provide certain transition services for a minimum of 12 months from the date of the completion of the transaction.