UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (26,048)	$ 3,568	$ (97,227)	$ (43,741)
Other comprehensive loss:
Currency translation adjustments	(18,896)	(3,639)	(31,470)	(7,981)
Total comprehensive loss	(44,944)	(71)	(128,697)	(51,722)
Net (income) loss attributable to noncontrolling interests	4,121	(366)	4,731	(3,446)
Currency translation adjustments attributable to noncontrolling interests	(687)	(605)	(5,652)	(34)
Total comprehensive (income) loss attributable to noncontrolling interests	3,434	(971)	(921)	(3,480)
Total comprehensive loss attributable to Bristow Group	(41,510)	(1,042)	(129,618)	(55,202)
Accretion of redeemable noncontrolling interests	0	0	0	1,498
Total comprehensive loss attributable to common stockholders	$ (41,510)	$ (1,042)	$ (129,618)	$ (56,700)