CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (143,673)	$ (31,396)	$ (175,714)	$ (87,142)
Other comprehensive loss:
Currency translation adjustments	(7,967)	10,691	(37,000)	20,451
Unrealized gain (loss) on cash flow hedges, net of tax benefit (provision) of $(0.1) million, zero, $0.2 million and zero, respectively	(98)	0	1,250	0
Total comprehensive loss	(151,738)	(20,705)	(211,464)	(66,691)
Net (income) loss attributable to noncontrolling interests	(517)	187	(584)	658
Currency translation adjustments attributable to noncontrolling interests	(32)	237	(171)	547
Total comprehensive (income) loss attributable to noncontrolling interests	(549)	424	(755)	1,205
Total comprehensive loss attributable to Bristow Group	$ (152,287)	$ (20,281)	$ (212,219)	$ (65,486)