SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION IS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	$ 472,538	$ 398,994
Direct cost and reimbursable expense	326,471	291,999
Intercompany expenses	0	0
Depreciation and amortization	25,334	22,819
General and administrative	60,432	40,308
Operating expense	412,237	355,126
Gain (loss) on disposal of assets	610	(1,721)
Earnings from unconsolidated affiliates, net of losses	4,281	13,972
Operating income	65,192	56,119
Interest expense, net	(7,127)	(20,251)
Other income (expense), net	(1,239)	(1,366)
Income before provision for income taxes	56,826	34,502
Provision for income taxes	(11,823)	(7,590)
Net income	45,003	26,912
Net income attributable to noncontrolling interests	(894)	(26)
Net income attributable to Bristow Group	44,109	26,886
External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	472,538	398,994
Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	0	0
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	553	374
Direct cost and reimbursable expense	0	0
Intercompany expenses	0	0
Depreciation and amortization	(142)	717
General and administrative	18,337	11,790
Operating expense	18,195	12,507
Gain (loss) on disposal of assets	0	0
Earnings from unconsolidated affiliates, net of losses	36,992	31,750
Operating income	19,350	19,617
Interest expense, net	27,518	7,601
Other income (expense), net	(928)	2
Income before provision for income taxes	45,940	27,220
Provision for income taxes	(1,813)	(317)
Net income	44,127	26,903
Net income attributable to noncontrolling interests	(18)	(17)
Net income attributable to Bristow Group	44,109	26,886
Parent Company [Member] | External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	0	0
Parent Company [Member] | Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	553	374
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	100,463	97,009
Direct cost and reimbursable expense	53,065	57,444
Intercompany expenses	0	0
Depreciation and amortization	10,215	10,683
General and administrative	10,099	7,585
Operating expense	73,379	75,712
Gain (loss) on disposal of assets	1,338	1,388
Earnings from unconsolidated affiliates, net of losses	0	0
Operating income	28,422	22,685
Interest expense, net	(1,006)	(31)
Other income (expense), net	(72)	14
Income before provision for income taxes	27,344	22,668
Provision for income taxes	233	(525)
Net income	27,577	22,143
Net income attributable to noncontrolling interests	0	0
Net income attributable to Bristow Group	27,577	22,143
Guarantor Subsidiaries [Member] | External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	75,637	76,643
Guarantor Subsidiaries [Member] | Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	24,826	20,366
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	396,901	322,351
Direct cost and reimbursable expense	273,406	234,555
Intercompany expenses	25,379	20,740
Depreciation and amortization	15,261	11,419
General and administrative	31,996	20,933
Operating expense	346,042	287,647
Gain (loss) on disposal of assets	(728)	(3,109)
Earnings from unconsolidated affiliates, net of losses	4,281	13,972
Operating income	54,412	45,567
Interest expense, net	(33,639)	(27,821)
Other income (expense), net	(239)	(1,382)
Income before provision for income taxes	20,534	16,364
Provision for income taxes	(10,243)	(6,748)
Net income	10,291	9,616
Net income attributable to noncontrolling interests	(876)	(9)
Net income attributable to Bristow Group	9,415	9,607
Non-Guarantor Subsidiaries [Member] | External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	396,901	322,351
Non-Guarantor Subsidiaries [Member] | Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	0	0
Consolidations, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	(25,379)	(20,740)
Direct cost and reimbursable expense	0	0
Intercompany expenses	(25,379)	(20,740)
Depreciation and amortization	0	0
General and administrative	0	0
Operating expense	(25,379)	(20,740)
Gain (loss) on disposal of assets	0	0
Earnings from unconsolidated affiliates, net of losses	(36,992)	(31,750)
Operating income	(36,992)	(31,750)
Interest expense, net	0	0
Other income (expense), net	0	0
Income before provision for income taxes	(36,992)	(31,750)
Provision for income taxes	0	0
Net income	(36,992)	(31,750)
Net income attributable to noncontrolling interests	0	0
Net income attributable to Bristow Group	(36,992)	(31,750)
Consolidations, Eliminations [Member] | External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	0	0
Consolidations, Eliminations [Member] | Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	$ (25,379)	$ (20,740)