CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (169,088)	$ (31,797)
Other comprehensive loss:
Currency translation adjustments	16,899	(29,033)
Unrealized gain on cash flow hedges, net of tax benefit of zero and $0.3 million, respectively	474	1,348
Total comprehensive loss	(151,715)	(59,482)
Net income attributable to noncontrolling interests	(158)	(67)
Currency translation adjustments attributable to noncontrolling interests	(11)	(139)
Total comprehensive income attributable to noncontrolling interests	(169)	(206)
Total comprehensive loss attributable to Bristow Group	$ (151,884)	$ (59,688)