v2.4.1.9

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION IS (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	$ 460,140,000us-gaap_Revenues	$ 412,335,000us-gaap_Revenues	$ 1,408,314,000us-gaap_Revenues	$ 1,228,657,000us-gaap_Revenues
Direct cost and reimbursable expense	327,779,000brs_DirectCostAndReimbursableExpense	298,267,000brs_DirectCostAndReimbursableExpense	993,116,000brs_DirectCostAndReimbursableExpense	883,346,000brs_DirectCostAndReimbursableExpense
Intercompany expenses	0brs_IntercompanyExpenses	0brs_IntercompanyExpenses	0brs_IntercompanyExpenses	0brs_IntercompanyExpenses
Depreciation and amortization	23,625,000us-gaap_DepreciationDepletionAndAmortization	23,655,000us-gaap_DepreciationDepletionAndAmortization	77,164,000us-gaap_DepreciationDepletionAndAmortization	70,332,000us-gaap_DepreciationDepletionAndAmortization
General and administrative	72,531,000us-gaap_SellingGeneralAndAdministrativeExpense	48,948,000us-gaap_SellingGeneralAndAdministrativeExpense	194,687,000us-gaap_SellingGeneralAndAdministrativeExpense	135,735,000us-gaap_SellingGeneralAndAdministrativeExpense
Operating expense	423,935,000us-gaap_OperatingExpenses	370,870,000us-gaap_OperatingExpenses	1,264,967,000us-gaap_OperatingExpenses	1,089,413,000us-gaap_OperatingExpenses
Gain (loss) on disposal of assets	(26,331,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment	3,982,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment	(25,594,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment	(803,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Earnings from unconsolidated affiliates, net of losses	(958,000)brs_EarningsFromUnconsolidatedAffiliates	(15,945,000)brs_EarningsFromUnconsolidatedAffiliates	419,000brs_EarningsFromUnconsolidatedAffiliates	1,115,000brs_EarningsFromUnconsolidatedAffiliates
Operating income	8,916,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment	29,502,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment	118,172,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment	139,556,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment
Interest expense, net	(6,976,000)us-gaap_InterestIncomeExpenseNet	(6,846,000)us-gaap_InterestIncomeExpenseNet	(21,675,000)us-gaap_InterestIncomeExpenseNet	(35,413,000)us-gaap_InterestIncomeExpenseNet
Gain on sale of unconsolidated affiliates	3,921,000us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal	3,921,000us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal	103,924,000us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal
Other income (expense), net	(5,223,000)us-gaap_OtherNonoperatingIncome	(696,000)us-gaap_OtherNonoperatingIncome	(9,143,000)us-gaap_OtherNonoperatingIncome	(575,000)us-gaap_OtherNonoperatingIncome
Income before provision for income taxes	638,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	21,960,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	91,275,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	207,492,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Provision for income taxes	(567,000)us-gaap_IncomeTaxExpenseBenefit	(2,946,000)us-gaap_IncomeTaxExpenseBenefit	(18,376,000)us-gaap_IncomeTaxExpenseBenefit	(51,682,000)us-gaap_IncomeTaxExpenseBenefit
Net income	71,000us-gaap_ProfitLoss	19,014,000us-gaap_ProfitLoss	72,899,000us-gaap_ProfitLoss	155,810,000us-gaap_ProfitLoss
Net income attributable to noncontrolling interests	(1,039,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	(87,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	(3,676,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	609,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income (loss) attributable to Bristow Group	(968,000)us-gaap_NetIncomeLoss	18,927,000us-gaap_NetIncomeLoss	69,223,000us-gaap_NetIncomeLoss	156,419,000us-gaap_NetIncomeLoss
External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	460,140,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	412,335,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	1,408,314,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	1,228,657,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember
Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	0us-gaap_Revenues / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	0us-gaap_Revenues / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	0us-gaap_Revenues / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	0us-gaap_Revenues / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	840,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	366,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	1,704,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	1,114,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Direct cost and reimbursable expense	0brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Intercompany expenses	0brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Depreciation and amortization	(24,000)us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	698,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	1,254,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	2,151,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
General and administrative	29,395,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	14,307,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	67,573,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	40,440,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Operating expense	29,371,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	15,005,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	68,827,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	42,591,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Gain (loss) on disposal of assets	0us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(45,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(45,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Earnings from unconsolidated affiliates, net of losses	(1,733,000)brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	1,733,000brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	51,251,000brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	171,641,000brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Operating income	(30,264,000)brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(12,951,000)brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(15,872,000)brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	130,119,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Interest expense, net	26,048,000us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	25,771,000us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	82,058,000us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	55,276,000us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Gain on sale of unconsolidated affiliates	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_ParentCompanyMember		0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other income (expense), net	(625,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(38,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(2,469,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(156,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income before provision for income taxes	(4,841,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	12,782,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	63,717,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	185,239,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Provision for income taxes	3,889,000us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	6,159,000us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	5,549,000us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(28,775,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net income	(952,000)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	18,941,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	69,266,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	156,464,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net income attributable to noncontrolling interests	(16,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(14,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(43,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(45,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net income (loss) attributable to Bristow Group	(968,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	18,927,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	69,223,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	156,419,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Parent Company [Member] | External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember
Parent Company [Member] | Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	840,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	366,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	1,704,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	1,114,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	99,105,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	98,549,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	298,470,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	295,582,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Direct cost and reimbursable expense	58,459,000brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	57,490,000brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	168,412,000brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	172,477,000brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Intercompany expenses	0brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Depreciation and amortization	9,637,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	10,708,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	31,738,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	32,439,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
General and administrative	8,891,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	9,814,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	26,137,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	25,973,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Operating expense	76,987,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	78,012,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	226,287,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	230,889,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Gain (loss) on disposal of assets	4,878,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	1,930,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	7,416,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	391,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Earnings from unconsolidated affiliates, net of losses	0brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Operating income	26,996,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	22,467,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	79,599,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	65,084,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Interest expense, net	(1,322,000)us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(1,810,000)us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(3,288,000)us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(3,317,000)us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Gain on sale of unconsolidated affiliates	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Other income (expense), net	(660,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(182,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(563,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(342,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Income before provision for income taxes	25,014,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	20,475,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	75,748,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	61,425,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Provision for income taxes	727,000us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(418,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(34,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	(2,786,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Net income	25,741,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	20,057,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	75,714,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	58,639,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Net income attributable to noncontrolling interests	0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Net income (loss) attributable to Bristow Group	25,741,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	20,057,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	75,714,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember	58,639,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Guarantor Subsidiaries [Member] | External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	78,026,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	74,092,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	227,378,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	229,253,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember
Guarantor Subsidiaries [Member] | Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	21,079,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	24,457,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	71,092,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	66,329,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	382,114,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	338,243,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	1,180,936,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	999,404,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Direct cost and reimbursable expense	269,320,000brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	240,777,000brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	824,704,000brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	710,869,000brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Intercompany expenses	21,919,000brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	24,823,000brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	72,796,000brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	67,443,000brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Depreciation and amortization	14,012,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	12,249,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	44,172,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	35,742,000us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
General and administrative	34,245,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	24,827,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	100,977,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	69,322,000us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Operating expense	339,496,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	302,676,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	1,042,649,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	883,376,000us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Gain (loss) on disposal of assets	(31,209,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	2,097,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(33,010,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(1,149,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Earnings from unconsolidated affiliates, net of losses	(1,000,000)brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(15,988,000)brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	377,000brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	1,072,000brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Operating income	10,409,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	21,676,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	105,654,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	115,951,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Interest expense, net	(31,702,000)us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(30,807,000)us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(100,445,000)us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(87,372,000)us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Gain on sale of unconsolidated affiliates	3,921,000us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	3,921,000us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	103,924,000us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Other income (expense), net	(3,938,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(476,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(6,111,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(77,000)us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Income before provision for income taxes	(21,310,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(9,607,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	3,019,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	132,426,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Provision for income taxes	(5,183,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(8,687,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(23,891,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(20,121,000)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net income	(26,493,000)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(18,294,000)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(20,872,000)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	112,305,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net income attributable to noncontrolling interests	(1,023,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(73,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(3,633,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	654,000us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Net income (loss) attributable to Bristow Group	(27,516,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(18,367,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	(24,505,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember	112,959,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Non-Guarantor Subsidiaries [Member] | External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	382,114,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	338,243,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	1,180,936,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	999,404,000us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember
Non-Guarantor Subsidiaries [Member] | Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember
Consolidations, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	(21,919,000)us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(24,823,000)us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(72,796,000)us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(67,443,000)us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Direct cost and reimbursable expense	0brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0brs_DirectCostAndReimbursableExpense / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Intercompany expenses	(21,919,000)brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(24,823,000)brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(72,796,000)brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(67,443,000)brs_IntercompanyExpenses / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Depreciation and amortization	0us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_DepreciationDepletionAndAmortization / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
General and administrative	0us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_SellingGeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Operating expense	(21,919,000)us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(24,823,000)us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(72,796,000)us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(67,443,000)us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Gain (loss) on disposal of assets	0us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_GainLossOnSaleOfPropertyPlantEquipment / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Earnings from unconsolidated affiliates, net of losses	1,775,000brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(1,690,000)brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(51,209,000)brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(171,598,000)brs_EarningsFromUnconsolidatedAffiliates / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Operating income	1,775,000brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(1,690,000)brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(51,209,000)brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(171,598,000)brs_OperatingIncomeLossIncludingIncomeLossFromUnconsolidatedAffiliatesAndGainLossFromSaleOfPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Interest expense, net	0us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_InterestIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Gain on sale of unconsolidated affiliates	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Other income (expense), net	0us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Income before provision for income taxes	1,775,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(1,690,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(51,209,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(171,598,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Provision for income taxes	0us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Net income	1,775,000us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(1,690,000)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(51,209,000)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(171,598,000)us-gaap_ProfitLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Net income attributable to noncontrolling interests	0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Net income (loss) attributable to Bristow Group	1,775,000us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(1,690,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(51,209,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember	(171,598,000)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Consolidations, Eliminations [Member] | External Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember	0us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember / us-gaap_MajorCustomersAxis = brs_ExternalCustomerMember
Consolidations, Eliminations [Member] | Intercompany Customer [Member]
Condensed Financial Statements, Captions [Line Items]
Total consolidated gross revenue	$ (21,919,000)us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	$ (24,823,000)us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	$ (72,796,000)us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember	$ (67,443,000)us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember / us-gaap_MajorCustomersAxis = brs_IntercompanyCustomerMember

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- Definition

Line item represents the aggregate direct operating costs and reimbursable expenses incurred during the reporting period.

+ References

No definition available.

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- Definition

Includes earnings accounted for under the equity method and dividends accounted for under the cost method from unconsolidated affiliates.

+ References

No definition available.

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Line item represents intercompany expenses that eliminates in consolidation.

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No definition available.

+ Details

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- Definition

The net result for the period of deducting operating expense from operating revenue and then adding (deducting) gain (loss) on disposal of assets and earnings (losses) from unconsolidated affiliates.

+ References

No definition available.

+ Details

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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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Amount of gain (loss) on sale or disposal of an equity method investment.

+ References

No definition available.

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

-Section 25

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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