SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION OCI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Net income	$ 45,003	$ 26,912
Currency translation adjustments	8,991	(4,429)
Other comprehensive income	53,994	22,483
Net (income) loss attributable to noncontrolling interests	(894)	(26)
Currency translation adjustment attributable to noncontrolling interest	217	(130)
Total comprehensive (income) loss attributable to noncontrolling interests	(677)	(156)
Total comprehensive income attributable to Bristow Group	53,317	22,327
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	44,127	26,903
Currency translation adjustments	(7,036)	920
Other comprehensive income	37,091	27,823
Net (income) loss attributable to noncontrolling interests	(18)	(17)
Currency translation adjustment attributable to noncontrolling interest	0	0
Total comprehensive (income) loss attributable to noncontrolling interests	(18)	(17)
Total comprehensive income attributable to Bristow Group	37,073	27,806
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	27,577	22,143
Currency translation adjustments	0	0
Other comprehensive income	27,577	22,143
Net (income) loss attributable to noncontrolling interests	0	0
Currency translation adjustment attributable to noncontrolling interest	0	0
Total comprehensive (income) loss attributable to noncontrolling interests	0	0
Total comprehensive income attributable to Bristow Group	27,577	22,143
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	10,291	9,616
Currency translation adjustments	(19,645)	(6,947)
Other comprehensive income	(9,354)	2,669
Net (income) loss attributable to noncontrolling interests	(876)	(9)
Currency translation adjustment attributable to noncontrolling interest	217	(130)
Total comprehensive (income) loss attributable to noncontrolling interests	(659)	(139)
Total comprehensive income attributable to Bristow Group	(10,013)	2,530
Consolidations, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	(36,992)	(31,750)
Currency translation adjustments	35,672	1,598
Other comprehensive income	(1,320)	(30,152)
Net (income) loss attributable to noncontrolling interests	0	0
Currency translation adjustment attributable to noncontrolling interest	0	0
Total comprehensive (income) loss attributable to noncontrolling interests	0	0
Total comprehensive income attributable to Bristow Group	$ (1,320)	$ (30,152)