CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (85,701)	$ (9,937)	$ (261,415)	$ (97,079)
Other comprehensive loss:
Currency translation adjustments	(6,462)	(57)	(43,462)	20,394
Pension liability adjustment, net of tax benefit of $0.5 million, zero, $0.5 million, and zero, respectively	(2,410)	0	(2,410)	0
Unrealized gain (loss) on cash flow hedges, net of tax benefit (provision) of zero, zero, $0.2 million and zero, respectively	(5)	0	1,245	0
Total comprehensive loss	(94,578)	(9,994)	(306,042)	(76,685)
Net (income) loss attributable to noncontrolling interests	(243)	1,664	(827)	2,322
Currency translation adjustments attributable to noncontrolling interests	(52)	(17)	(223)	530
Total comprehensive (income) loss attributable to noncontrolling interests	(295)	1,647	(1,050)	2,852
Total comprehensive loss attributable to Bristow Group	$ (94,873)	$ (8,347)	$ (307,092)	$ (73,833)