Bristow (BRSWQ) 10-Q 6 Nov 14 2015 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Sep. 30, 2014	Oct. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Entity Registrant Name	'Bristow Group Inc.	'
Entity Central Index Key	'0000073887	'
Current Fiscal Year End Date	'--03-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	35,158,196
Document Fiscal Year Focus	'2015	'
Document Fiscal Period Focus	'Q2	'

UNAUDITED_CONDENSED_CONSOLIDAT

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Gross revenue:	'	'	'	'
Operating revenue from non-affiliates	$418,169	$353,849	$834,074	$690,097
Operating revenue from affiliates	22,289	24,781	43,719	48,080
Reimbursable revenue from non-affiliates	35,178	38,698	70,381	78,080
Reimbursable revenue from affiliates	0	0	0	65
Total consolidated gross revenue	475,636	417,328	948,174	816,322
Operating expense:	'	'	'	'
Direct cost	305,557	256,766	599,420	512,022
Reimbursable expense	33,309	36,314	65,917	73,057
Depreciation and amortization	28,205	23,858	53,539	46,677
General and administrative	61,724	46,479	122,156	86,787
Operating expense	428,795	363,417	841,032	718,543
Gain (loss) on disposal of assets	127	-3,064	737	-4,785
Earnings from unconsolidated affiliates, net of losses	-2,904	3,088	1,377	17,060
Operating income	44,064	53,935	109,256	110,054
Interest expense, net	-7,572	-8,316	-14,699	-28,567
Gain on sale of unconsolidated affiliate	0	103,924	0	103,924
Other income (expense), net	-2,681	1,487	-3,920	121
Income before provision for income taxes	33,811	151,030	90,637	185,532
Provision for income taxes	-5,986	-41,146	-17,809	-48,736
Net income	27,825	109,884	72,828	136,796
Net income attributable to noncontrolling interests	-1,743	722	-2,637	696
Net income attributable to Bristow Group	$26,082	$110,606	$70,191	$137,492
Earnings per common share:	'	'	'	'
Basic earnings per share	$0.74	$3.04	$1.98	$3.79
Diluted earnings per share	$0.73	$3.01	$1.96	$3.75
Cash dividends declared per common share	$0.32	$0.25	$0.64	$0.50

UNAUDITED_CONDENSED_CONSOLIDAT1

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$27,825	$109,884	$72,828	$136,796
Currency translation adjustments	-19,507	15,874	-10,516	11,445
Other comprehensive income	8,318	125,758	62,312	148,241
Net (income) loss attributable to noncontrolling interests	-1,743	722	-2,637	696
Currency translation adjustment attributable to noncontrolling interest	-183	-108	34	-238
Total comprehensive (income) loss attributable to noncontrolling interests	-1,926	614	-2,603	458
Total comprehensive income attributable to Bristow Group	$6,392	$126,372	$59,709	$148,699

UNAUDITED_CONDENSED_CONSOLIDAT2

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and cash equivalents	$263,910	$204,341
Accounts receivable from non-affiliates, net of allowance for doubtful accounts	287,794	292,650
Accounts receivable from affiliates, net of allowance for doubtful accounts	7,616	4,793
Inventories	142,814	137,463
Assets held for sale	32,088	29,276
Prepaid expenses and other current assets	51,723	53,084
Total current assets	785,945	721,607
Investment in unconsolidated affiliates	259,262	262,615
Property and equipment - at cost:	'	'
Total property and equipment, at cost	2,597,220	2,792,123
Less - Accumulated depreciation and amortization	-510,895	-523,372
Total property and equipment, net	2,086,325	2,268,751
Goodwill	55,520	56,680
Other assets	91,345	88,604
Total assets	3,278,397	3,398,257
LIABILITIES AND STOCKHOLDERS' INVESTMENT	'	'
Accounts payable	79,799	89,818
Accrued wages, benefits and related taxes	62,632	71,192
Income taxes payable	8,525	13,588
Other accrued taxes	10,849	9,302
Deferred revenue	29,698	31,157
Accrued maintenance and repairs	19,590	17,249
Accrued interest	15,459	16,157
Other accrued liabilities	45,816	45,853
Current deferred taxes	12,054	12,372
Short-term borrowings and current maturities of long-term debt	13,669	14,207
Deferred sale leaseback advance	137,969	136,930
Total current liabilities	436,060	457,825
Long-term debt, less current maturities	765,865	827,095
Accrued pension liabilities	71,815	86,823
Other liabilities and deferred credits	56,255	78,126
Deferred taxes	166,654	169,519
Commitments and Contingencies	'	'
Temporary equity	24,264	22,283
Stockholders' investment:	'	'
Common stock	375	373
Additional paid-in capital	769,891	762,813
Retained earnings	1,292,722	1,245,220
Accumulated other comprehensive loss	-166,988	-156,506
Treasury shares	-147,388	-103,965
Stockholders' equity	1,748,612	1,747,935
Noncontrolling interests	8,872	8,651
Total stockholders' investment	1,757,484	1,756,586
Total liabilities and stockholders' investment	3,278,397	3,398,257
Land and Building [Member]	'	'
Property and equipment - at cost:	'	'
Total property and equipment, at cost	154,002	145,973
Aircraft And Equipment [Member]	'	'
Property and equipment - at cost:	'	'
Total property and equipment, at cost	$2,443,218	$2,646,150

UNAUDITED_CONDENSED_CONSOLIDAT3

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (PARANTHETICAL) (USD $)	Sep. 30, 2014	Mar. 31, 2014
Statement of Financial Position [Abstract]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares outstanding	35,303,808	35,708,469
Treasury stock, shares acquired, par value method	1,291,441	1,291,441
Treasury stock, shares	2,190,797	1,595,479

UNAUDITED_CONDENSED_CONSOLIDAT4

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$72,828	$136,796
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	53,539	46,677
Deferred income taxes	-329	7,352
Write-off of deferred debt financing fees	437	12,733
Discount amortization on long-term debt	2,130	1,722
(Gain) loss on disposal of assets	-737	4,785
Gain on sale of unconsolidated affiliate	0	-103,924
Impairment of inventories	3,362	2,364
Stock-based compensation	8,407	6,625
Equity in earnings from unconsolidated affiliates (in excess of) less than dividends received	2,362	-8,061
Tax benefit related to stock-based compensation	-1,642	-4,234
Increase (decrease) in cash resulting from changes in:	'	'
Accounts receivable	-2,587	28,508
Inventories	-11,865	-438
Prepaid expenses and other assets	-2,664	8,940
Accounts payable	-1,794	-2,577
Accrued liabilities	-10,176	5,756
Other liabilities and deferred credits	-10,104	-10,548
Net cash provided by operating activities	101,167	132,476
Cash flows from investing activities:	'	'
Capital expenditures	-302,119	-339,559
Proceeds from asset dispositions	397,644	155,603
Proceeds from sale of unconsolidated affiliate	0	112,210
Net cash used in investing activities	95,525	-71,746
Cash flows from financing activities:	'	'
Proceeds from borrowings	219,354	160,146
Debt issuance costs	0	-15,152
Repayment of debt	-282,838	-117,748
Partial prepayment of put/call obligation	-30	-27
Acquisition of noncontrolling interest	-3,170	0
Repurchase of common stock	-43,423	0
Common stock dividends paid	-22,689	-18,138
Issuance of common stock	1,398	11,550
Tax benefit related to stock-based compensation	1,642	4,234
Net cash provided by (used in) financing activities	-129,756	24,865
Effect of exchange rate changes on cash and cash equivalents	-7,367	12,303
Net increase (decrease) in cash and cash equivalents	59,569	97,898
Cash and cash equivalents at beginning of period	204,341	215,623
Cash and cash equivalents at end of period	263,910	313,521
Supplemental disclosure of cash flow information:	'	'
Interest	14,442	19,236
Income taxes	15,322	16,092
Deferred sale leaseback advance	42,747	0
Completion of deferred sale leaseback	($73,104)	$0

BASIS_OF_PRESENTATION_CONSOLID

BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
	Sep. 30, 2014
Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]	'
BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	'
	BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	The condensed consolidated financial statements include the accounts of Bristow Group Inc. and its consolidated entities (“Bristow Group,” the “Company,” “we,” “us,” or “our”) after elimination of all significant intercompany accounts and transactions. Our fiscal year ends March 31, and we refer to fiscal years based on the end of such period. Therefore, the fiscal year ending March 31, 2015 is referred to as “fiscal year 2015.” Pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), the information contained in the following notes to condensed consolidated financial statements is condensed from that which would appear in the annual consolidated financial statements; accordingly, the condensed consolidated financial statements included herein should be read in conjunction with the consolidated financial statements and related notes thereto contained in our fiscal year 2014 Annual Report (the “fiscal year 2014 Financial Statements”). Operating results for the interim period presented are not necessarily indicative of the results that may be expected for the entire fiscal year.
	The condensed consolidated financial statements included herein are unaudited; however, they include all adjustments of a normal recurring nature which, in the opinion of management, are necessary for a fair presentation of the consolidated financial position of the Company as of September 30, 2014 and the consolidated results of operations for the three and six months ended September 30, 2014 and 2013, and the consolidated cash flows for the six months ended September 30, 2014 and 2013.
	Foreign Currency
	During the three and six months ended September 30, 2014 and 2013, our primary foreign currency exposure was to the British pound sterling, the euro, the Australian dollar and the Nigerian naira. The value of these currencies has fluctuated relative to the U.S. dollar as indicated in the following table:
				Three Months Ended						Six Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		One British pound sterling into U.S. dollars
		High		1.72			1.62			1.72			1.62
		Average		1.67			1.55			1.68			1.54
		Low		1.61			1.48			1.61			1.48
		At period-end		1.62			1.62			1.62			1.62
		One euro into U.S. dollars
		High		1.37			1.35			1.39			1.35
		Average		1.33			1.32			1.35			1.32
		Low		1.26			1.28			1.26			1.26
		At period-end		1.26			1.35			1.26			1.35
		One Australian dollar into U.S. dollars
		High		0.95			0.95			0.95			1.07
		Average		0.93			0.92			0.93			0.95
		Low		0.87			0.89			0.87			0.89
		At period-end		0.88			0.94			0.88			0.94
		One Nigerian naira into U.S. dollars
		High		0.0062			0.0064			0.0063			0.0065
		Average		0.0061			0.0063			0.0062			0.0063
		Low		0.006			0.0061			0.006			0.0061
		At period-end		0.006			0.0063			0.006			0.0063
	______
	Source: Bank of England and Oanda.com
	Other income (expense), net, in our condensed consolidated statements of income includes foreign currency transaction gains (losses) of $(1.7) million and $0.4 million for the three months ended September 30, 2014 and 2013, respectively, and $(2.1) million and $(1.0) million for the six months ended September 30, 2014 and 2013, respectively. The losses for the three and six months ended September 30, 2014 were primarily driven by the changes in the Australian dollar to U.S. dollars and British pound sterling exchange rates.
	Our earnings from unconsolidated affiliates, net of losses, are also affected by the impact of changes in foreign currency exchange rates on the reported results of our unconsolidated affiliates. During the three months ended September 30, 2014 and 2013, earnings from unconsolidated affiliates, net of losses, were decreased by $6.8 million and $2.1 million, respectively, and during the six months ended September 30, 2014 and 2013, earnings from unconsolidated affiliates, net of losses, were decreased by $5.9 million and $2.4 million, respectively, as a result of the impact of changes in foreign currency exchange rates on the earnings of our unconsolidated affiliates, primarily the impact of changes in the Brazilian real to U.S. dollar exchange rate on earnings for our affiliate in Brazil. The value of the Brazilian real has fluctuated relative to the U.S. dollar as indicated in the following table:
				Three Months Ended						Six Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		One Brazilian real into U.S. dollars
		High		0.4534			0.4568			0.4572			0.5123
		Average		0.4398			0.438			0.4445			0.4617
		Low		0.4066			0.4093			0.4066			0.4093
		At period-end		0.4102			0.4475			0.4102			0.4475
	______
	Source: Oanda.com
	We estimate that the fluctuation of currencies versus the same period in the prior fiscal year had the following effect on our financial condition and results of operations (in thousands):
				Three Months Ended				Six Months Ended
				September 30, 2014				September 30, 2014
		Revenue		$	9,510			$	19,855
		Operating expense		(6,027		)		(12,109		)
		Earnings from unconsolidated affiliates, net of losses		(6,620		)		(5,898		)
		Non-operating expense		(2,112		)		(1,163		)
		Income before provision for income taxes		(5,249		)		685
		Benefit (provision) for income taxes		1,220				(145		)
		Net income		(4,029		)		540
		Cumulative translation adjustment		(19,690		)		(10,482		)
		Total stockholders’ investment		$	(23,719	)		$	(9,942	)
	Revenue Recognition
	In general, we recognize revenue when it is both realized or realizable and earned. We consider revenue to be realized or realizable and earned when the following conditions exist: there is persuasive evidence of an arrangement, generally a client contract exists; the services or products have been performed or delivered to the client; the sales price is fixed or determinable; and collection is probable. More specifically, revenue from helicopter services is recognized based on contractual rates as the related services are performed. The charges under these contracts are generally based on a two-tier rate structure consisting of a daily or monthly fixed fee plus additional fees for each hour flown. These contracts are for varying periods and generally permit the client to cancel the contract before the end of the term. We also provide services to clients on an “ad hoc” basis, which usually entails a shorter contract notice period and duration. The charges for ad hoc services are based on an hourly rate or a daily or monthly fixed fee plus additional fees for each hour flown. In order to offset potential increases in operating costs, our long-term contracts may provide for periodic increases in the contractual rates charged for our services. We recognize the impact of these rate increases when the criteria outlined above have been met. This generally includes written recognition from the clients that they are in agreement with the amount of the rate escalation. Cost reimbursements from clients are recorded as reimbursable revenue with the related reimbursed costs recorded as reimbursable expense on our condensed consolidated statements of income.
	Bristow Academy, our helicopter training business unit, primarily earns revenue from military training, flight training provided to individual students and ground school courses. We recognize revenue from these sources using the same revenue recognition principles described above as services are provided. We consider revenue to be realized or realizable and earned when the following conditions exist: there is persuasive evidence of an arrangement, generally a contract exists; the services have been performed or delivered to the client or student; the sales price is fixed and determinable; and collection has occurred or is probable.
	Eastern Airways International Limited ("Eastern Airways") primarily earns revenue through charter and scheduled airline services and provision of airport services. Both chartered and scheduled revenue is recognized net of passenger taxes and discounts. Revenue is recognized at the earlier of the period in which the service is provided or the period in which the right to travel expires, which is determined by the terms and conditions of the ticket. Ticket sales are recorded within deferred revenue until recognized as revenue in accordance with the above policy. Airport services revenue is recognized when earned.
	Interest Expense, Net
	During the three and six months ended September 30, 2014 and 2013, interest expense, net consisted of the following (in thousands):
			Three Months Ended								Six Months Ended
			September 30,								September 30,
			2014				2013				2014			2013
	Interest income	$	386			$	762			$	622		$	881
	Interest expense	(7,958		)		(9,078		)		(15,321		)	(29,448		)
	Interest expense, net	$	(7,572	)		$	(8,316	)		$	(14,699	)	$	(28,567	)
Interest expense for the three and six months ended September 30, 2014, respectively, includes the write-off of deferred financing fees of $0.3 million and $0.4 million related to the repurchase of $20.0 million and $31.2 million principal amount of our 6 ¼% Senior Notes due 2022 (the "6 ¼% Senior Notes"). Interest expense for the six months ended September 30, 2013 includes the write-off of $12.7 million of deferred financing fees related to a potential financing that was cancelled in a prior period. For further details on the repurchase of the 6 ¼% Senior Notes, see Note 3.
Gain on Sale of Unconsolidated Affiliate
On July 14, 2013, we sold our 50% interest in each of FBS Limited, FB Heliservices Limited and FB Leasing Limited, collectively referred to as the FB Entities, for £74 million or approximately $112.2 million. We recorded a pre-tax gain on the sale of unconsolidated affiliate of $103.9 million during the three and six months ended September 30, 2014 on our condensed consolidated statements of income.
Other Income (Expense), Net
In addition to foreign currency transaction gains (losses) discussed above, other income (expense), net includes expense of $1.0 million and $1.9 million related to premiums paid for the repurchase of a portion of the 6 ¼% Senior Notes during the three and six months ended September 30, 2014, respectively. Other income (expense), net for the three and six months ended September 30, 2013 also includes $1.1 million of income for the sale of intellectual property.
Accounts Receivable
As of September 30 and March 31, 2014, the allowance for doubtful accounts for non-affiliates was $0.5 million and $5.0 million, respectively. The allowance as of March 31, 2014 primarily related to amounts due from ATP Oil and Gas Corporation, a client in the U.S. Gulf of Mexico, as a result of its filing for bankruptcy. During the six months ended September 30, 2014, the allowance recorded for ATP was reversed as we settled outstanding matters related to ongoing bankruptcy proceedings, which resulted in a $4.4 million reduction in bad debt expense, included within direct cost on our condensed consolidated statements of income. The remaining amount of $0.5 million related to ATP was written off as no further settlement is expected. As of September 30 and March 31, 2014, there were no allowances for doubtful accounts related to accounts receivable due from affiliates.
Inventories
As of September 30 and March 31, 2014, inventories were net of allowances of $43.0 million and $46.0 million, respectively. During the three and six months ended September 30, 2014, we increased our inventory allowance by $3.4 million related to excess inventory identified for an older large aircraft model we plan to remove from our operational fleet over the next two fiscal years. During the six months ended September 30, 2013, we increased our inventory allowance by $2.4 million as a result of our review of excess inventory on aircraft model types we ceased ownership of or classified all or a significant portion of as held for sale; $1.5 million of this allowance was recorded during the three months ended September 30, 2013. A majority of this allowance recorded related to small aircraft types operating primarily in our North America business unit as a result of a move toward operating a fleet of mostly large and medium aircraft in this market.
Prepaid Expenses and Other Current Assets
As of September 30 and March 31, 2014, prepaid expenses and other current assets included the short-term portion of contract acquisition and pre-operating costs totaling $2.1 million and $5.5 million, respectively, related to the search and rescue (“SAR”) contracts in the U.K. and a client contract in Norway, which are recoverable under the contracts and will be expensed over the terms of the contracts.
Other Assets
As of September 30 and March 31, 2014, other assets included the long-term portion of contract acquisition and pre-operating costs totaling $23.8 million and $15.2 million, respectively, related to the SAR contracts in the U.K. and a client contract in Norway and these amounts will be expensed over the term of the contracts.
Property and Equipment and Assets Held for Sale
During the three and six months ended September 30, 2014 and 2013, we made capital expenditures as follows:
		Three Months Ended								Six Months Ended
		September 30,								September 30,
		2014				2013				2014			2013
	Number of aircraft delivered:
	Medium	—				3				3			5
	Large	2				2				8			5
	Total aircraft	2				5				11			10
	Capital expenditures (in thousands):
	Aircraft and related equipment (1)	$	65,386			$	145,653			$	237,484		$	312,880
	Other	36,286				14,374				64,635			26,679
	Total capital expenditures	$	101,672			$	160,027			$	302,119		$	339,559
_____________
(1)	During the three months ended September 30, 2014 and 2013, we spent $48.0 million and $139.4 million, respectively, and during the six months ended September 30, 2014 and 2013, we spent $211.3 million and $301.0 million, respectively, on construction in progress, which primarily represents progress payments on aircraft to be delivered in future periods.
Additionally, the following table presents details on the aircraft sold or disposed of and impairments on assets held for sale during the three and six months ended September 30, 2014 and 2013:
		Three Months Ended								Six Months Ended
		September 30,								September 30,
		2014				2013				2014			2013
		(In thousands, except for number of aircraft)
	Number of aircraft sold or disposed of (1)	21				11				25			15
	Proceeds from sale or disposal of assets (1)	$	391,001			$	153,710			$	397,644		$	155,603
	Gain (loss) from sale or disposal of assets	$	685			$	(2,114	)		$	3,874		$	(2,605	)
	Number of aircraft impaired	2				1				6			3
	Impairment charges on aircraft held for sale	$	(558	)		$	(950	)		$	(3,137	)	$	(2,180	)
_____________
(1)	During the three and six months ended September 30, 2014 and 2013, 14 and 7 of these aircraft were leased back, and we received $380.7 million and $145.6 million, respectively, in proceeds for these aircraft. We did not enter into any sale leaseback transactions during the three months ended June 30, 2014 and 2013.
Effective April 1, 2014, we changed the useful lives of certain non-aircraft assets. These changes impact our depreciation on the assets and were driven by our annual review of useful lives. During the six months ended September 30, 2014, we recorded a $1.8 million reduction in depreciation expense as a result of this change in useful lives.
Deferred Sale Leaseback Advance
As of September 30 and March 31, 2014, respectively, we had a total deferred sale leaseback advance of $138.0 million and $166.3 million, of which the current portion is included in deferred sale leaseback advance ($138.0 million and $136.9 million) and the long-term portion is included in other liabilities and deferred credits (zero and $29.4 million) on our condensed consolidated balance sheets. During fiscal year 2014, we received payment of approximately $106.1 million for progress payments we had made on seven aircraft under construction, and we assigned any future payments due on these construction agreements to the purchaser. As we have the obligation and intent to lease the aircraft back from the purchaser upon completion, we recorded a liability equal to the cash received and additional payments made by the purchaser thus far totaling $102.9 million, with a corresponding increase to construction in progress. During the three and six months ended September 30, 2014, we took delivery and entered into leases for two of these aircraft, and removed a total of $73.1 million and $72.8 million, respectively, from construction in progress and deferred sale leaseback advance, current from our condensed consolidated balance sheet. We will continue to increase both construction in progress and deferred sale leaseback advance, current or long-term, until we lease the remaining five aircraft, at which time the construction in progress and the liabilities will also be removed from our condensed consolidated balance sheet for those aircraft.
Recent Accounting Pronouncement
In May 2014, the Financial Accounting Standards Board (the “FASB”) issued accounting guidance on revenue recognition for revenue from contracts with customers. This guidance requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers and will replace most existing revenue recognition guidance when it becomes effective. This new standard is effective for annual reporting periods beginning after December 15, 2016. Early application is not permitted and the standard permits the use of either the retrospective or cumulative effect transition method. We are evaluating the effect this standard will have on our financial statements and related disclosures. We have not yet selected a transition method nor have we determined the effect of the standard on our ongoing financial reporting.

VARIABLE_INTEREST_ENTITIES_AND

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES	6 Months Ended
	Sep. 30, 2014
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]	'
VARIABLE INTEREST ENTITIES	'
	VARIABLE INTEREST ENTITIES AND INVESTMENTS IN OTHER SIGNIFICANT AFFILIATES
	VIEs
	A Variable Interest Entity (“VIE”) is an entity that either (i) has insufficient equity to permit the entity to finance its activities without additional subordinated financial support or (ii) has equity investors who lack the characteristics of a controlling financial interest. A VIE is consolidated by its primary beneficiary. The primary beneficiary has both the power to direct the activities that most significantly impact the entity’s economic performance and the obligation to absorb losses or the right to receive benefits from the entity that could potentially be significant to the VIE. If we determine that we have operating power and the obligation to absorb losses or receive benefits, we consolidate the VIE as the primary beneficiary, and if not, we do not consolidate.
	As of September 30, 2014, we had interests in four VIEs of which we were the primary beneficiary, which are described below, and had no interests in VIEs of which we were not the primary beneficiary. See Note 3 to the fiscal year 2014 Financial Statements for a description of other investments in significant affiliates.
	Bristow Aviation Holdings Limited — We own 49% of Bristow Aviation Holdings Limited’s (“Bristow Aviation”) common stock and a significant amount of its subordinated debt. Bristow Aviation is incorporated in England and holds all of the outstanding shares in Bristow Helicopters Limited (“Bristow Helicopters”). Bristow Aviation's subsidiaries provide helicopter services to clients primarily in the U.K, Norway, Australia, Nigeria and Trinidad. Bristow Aviation is organized with three different classes of ordinary shares having disproportionate voting rights. The Company, Caledonia Investments plc (“Caledonia”) and a European Union investor (the “E.U. Investor”) own 49%, 46% and 5%, respectively, of Bristow Aviation’s total outstanding ordinary shares, although Caledonia has voting control over the E.U. Investor’s shares.
	In addition to our ownership of 49% of Bristow Aviation’s outstanding ordinary shares, in May 2004, we acquired eight million shares of deferred stock, essentially a subordinated class of stock with no voting rights, from Bristow Aviation for £1 per share ($14.4 million in total). We also have £91.0 million ($147.5 million) principal amount of subordinated unsecured loan stock (debt) of Bristow Aviation bearing interest at an annual rate of 13.5% and payable semi-annually. Payment of interest on such debt has been deferred since its incurrence in 1996. Deferred interest accrues at an annual rate of 13.5% and aggregated $1.4 billion as of September 30, 2014.
	The Company, Caledonia, the E.U. Investor and Bristow Aviation have entered into a shareholder agreement respecting, among other things, the composition of the board of directors of Bristow Aviation. On matters coming before Bristow Aviation’s board, Caledonia’s representatives have a total of three votes and the two other directors have one vote each. In addition, Caledonia has the right to nominate two persons to our board of directors and to replace any such directors so nominated.
	Caledonia, the Company and the E.U. Investor also have entered into a put/call agreement under which, upon giving specified prior notice, we have the right to buy all the Bristow Aviation shares held by Caledonia and the E.U. Investor, who, in turn, have the right to require us to purchase such shares. Under current English law, we would be required, in order for Bristow Aviation to retain its operating license, to find a qualified E.U. investor to own any Bristow Aviation shares we have the right to acquire under the put/call agreement. The only restriction under the put/call agreement limiting our ability to exercise the put/call option is a requirement to consult with the Civil Aviation Authority (the “CAA”) in the U.K. regarding the suitability of the new holder of the Bristow Aviation shares. The put/call agreement does not contain any provisions should the CAA not approve the new E.U. investor. However, we would work diligently to find an E.U. investor suitable to the CAA. The amount by which we could purchase the shares of the other investors holding 51.0% of the equity of Bristow Aviation is fixed under the terms of the call option, and we have reflected this amount on our condensed consolidated balance sheets in noncontrolling interests.
	Furthermore, the call option provides a mechanism whereby the economic risk for the other investors is limited should the financial condition of Bristow Aviation deteriorate. The call option price is the nominal value of the ordinary shares held by the noncontrolling shareholders (£1.0 million as of September 30, 2014) plus an annual guaranteed rate of return less any prepayments of such call option price and any dividends paid on the shares concerned. We can elect to pre-pay the guaranteed return element of the call option price wholly or in part without exercising the call option. No dividends have been paid. We have accrued the annual return due to the other shareholders at a rate of sterling LIBOR plus 3% (prior to May 2004, the rate was fixed at 12%) by recognizing noncontrolling interest expense on our condensed consolidated statements of income, with a corresponding increase in noncontrolling interests on our condensed consolidated balance sheets. Prepayments of the guaranteed return element of the call option are reflected as a reduction in noncontrolling interests on our condensed consolidated balance sheets. The other investors have an option to put their shares in Bristow Aviation to us. The put option price is calculated in the same way as the call option price except that the guaranteed rate for the period to April 2004 was 10% per annum. If the put option is exercised, any pre-payments of the call option price are set off against the put option price.
	Bristow Aviation and its subsidiaries are exposed to similar operational risks and are therefore monitored and evaluated on a similar basis by management. Accordingly, the financial information reflected on our condensed consolidated balance sheets and statements of income for Bristow Aviation and subsidiaries is presented in the aggregate, including intercompany amounts with other consolidated entities, as follows (in thousands):
			September 30,			March 31,
			2014			2014
		Assets
		Cash and cash equivalents	$	124,037		$	173,490
		Accounts receivable	381,721			311,641
		Inventories	96,551			94,288
		Prepaid expenses and other current assets	77,883			45,791
		Total current assets	680,192			625,210
		Investment in unconsolidated affiliates	1,321			1,414
		Property and equipment, net	234,041			217,969
		Goodwill	40,055			41,218
		Other assets	51,840			45,477
		Total assets	$	1,007,449		$	931,288
		Liabilities
		Accounts payable	$	270,915		$	182,892
		Accrued liabilities	122,404			113,820
		Accrued interest	1,390,337			1,291,581
		Deferred taxes	1,631			3,588
		Current maturities of long-term debt	6,854			9,664
		Total current liabilities	1,792,141			1,601,545
		Long-term debt, less current maturities	165,072			172,391
		Accrued pension liabilities	71,815			86,824
		Other liabilities and deferred credits	8,714			2,252
		Deferred taxes	10,820			13,062
		Temporary equity	24,264			22,283
		Total liabilities	$	2,072,826		$	1,898,357
			Three Months Ended					Six Months Ended
			September 30,					September 30,
			2014			2013		2014			2013
		Revenue	$	391,615		$	330,006	$	775,432		$	641,807
		Operating income	7,018			18,536		23,718			27,667
		Net income (loss) (1)	(47,767		)	81,236		(85,348		)	48,886
	_____________
	(1)	During the three months ended September 30, 2013, we sold our 50% interest in the FB Entities and recorded a pre-tax gain of $103.9 million.
	Bristow Helicopters Nigeria Ltd. — Bristow Helicopters Nigeria Ltd. (“BHNL”) is a joint venture in Nigeria in which Bristow Helicopters owned a 40% interest, unrelated local Nigerian partners together owned a 10% interest, a Nigerian company owned 100% by Nigerian employees owned a 48% interest and an employee trust fund owned the remaining 2% interest as of September 30, 2014. BHNL provides helicopter services to clients in Nigeria.
	In order to be able to bid competitively for our services in the Nigerian market, we were required to identify local citizens to participate in the ownership of entities domiciled in the region. However, these owners do not have extensive knowledge of the aviation industry and have historically deferred to our expertise in the overall management and day-to-day operation of BHNL (including the establishment of operating and capital budgets and strategic decisions regarding the potential expansion of BHNL’s operations). We have also historically provided subordinated financial support to BHNL and will need to continue to do so unless and until BHNL acquires sufficient equity to permit itself to finance its activities without that additional support from us. As we have the power to direct the most significant activities affecting the economic performance and ongoing success of BHNL and hold a variable interest in the entity in the form of our equity investment and working capital infusions, we consolidate BHNL as the primary beneficiary. The employee-owned Nigerian entity referenced above purchased a 19% interest in BHNL in December 2013 with proceeds from a loan received from BGI Aviation Technical Services Nigeria Limited ("BATS"). In July 2014, the employee-owned Nigerian entity purchased an additional 29% interest with proceeds from a loan received from Bristow Helicopters (International Limited) ("BHIL"). Both BATS and BHIL are wholly-owned subsidiaries of Bristow Aviation. The employee-owned Nigerian entity is also a VIE that we consolidate as the primary beneficiary; we eliminate the loans discussed above in consolidation.
	BHNL is an indirect subsidiary of Bristow Aviation; therefore, financial information for this entity is included within the amounts for Bristow Aviation and its subsidiaries presented above.
	Pan African Airlines Nigeria Ltd. — Pan African Airlines Nigeria Ltd. (“PAAN”) is a joint venture in Nigeria with local partners, in which we own a 50.17% interest. PAAN provides helicopter services to clients in Nigeria.
	The activities that most significantly impact PAAN’s economic performance relate to the day-to-day operation of PAAN, setting the operating and capital budgets, and strategic decisions regarding the potential expansion of PAAN’s operations. Throughout the history of PAAN, our representation on the board and our secondment to PAAN of its managing director has enabled us to direct the key operational decisions of PAAN (without objection from the other board members). We have also historically provided subordinated financial support to PAAN. As we have the power to direct the most significant activities affecting the economic performance and ongoing success of PAAN and hold a variable interest in the form of our equity investment and working capital infusions, we consolidate PAAN as the primary beneficiary. However, as long as we own a majority interest in PAAN, the separate presentation of financial information in a tabular format for PAAN is not required.
	Investments in Other Significant Affiliates
	Effective May 28, 2014, our ownership interest in Líder in Brazil was reduced from 42.5% to 41.9% as a result of Líder's issuance of additional shares to improve tax and cost-saving efficiencies. This transaction resulted in no material impact to our condensed consolidated financial statements.

DEBT

DEBT	6 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
DEBT	'
	DEBT
	Debt as of September 30 and March 31, 2014 consisted of the following (in thousands):
			September 30,			March 31,
			2014			2014
		6¼% Senior Notes due 2022	$	418,770		$	450,000
		Term Loan	224,396			226,604
		3% Convertible Senior Notes due 2038, including $3.0 million and $5.1 million of unamortized discount, respectively	111,971			109,904
		Revolving Credit Facility	—			24,000
		Eastern Airways debt	23,855			29,911
		Other	542			883
		Total debt	779,534			841,302
		Less short-term borrowings and current maturities of long-term debt	(13,669		)	(14,207		)
		Total long-term debt	$	765,865		$	827,095
	6 ¼% Senior Notes due 2022 — During the three and six months ended September 30, 2014, respectively, we repurchased $20.0 million and $31.2 million principal amount of the 6 ¼% Senior Notes in the open market at 105% to 105.25% and at 105% to 107.75%, plus accrued interests for a total of $21.6 million and $33.7 million. In connection with this repurchase, during the three and six months ended September 30, 2014, respectively, we incurred $1.0 million and $1.9 million in premium and fees, which is included in other income (expense), net on our condensed consolidated statements of income, and wrote-off $0.3 million and $0.4 million of unamortized deferred financing fees, which is included in interest expense, net on our condensed consolidated statements of income.
	Subsequently, during October 2014, we repurchased an additional $17.2 million principal amount of our 6 ¼% Senior Notes in the open market at 103.75% to 104.25% plus accrued interest for a total of $18.3 million.
	3% Convertible Senior Notes due 2038 —The balances of the debt and equity components of the 3% Convertible Senior Notes due 2038 (the “3% Convertible Senior Notes”) as of September 30 and March 31, 2014 are as follows (in thousands):
			September 30,			March 31,
			2014			2014
		Equity component – net carrying value	$	14,905		$	14,905
		Debt component:
		Face amount due at maturity	$	115,000		$	115,000
		Unamortized discount	(3,029		)	(5,096		)
		Debt component – net carrying value	$	111,971		$	109,904
	The remaining debt discount is being amortized into interest expense over the expected remaining life of the 3% Convertible Senior Notes to June 2015 (the first put date) using the effective interest rate. The effective interest rate for the three and six months ended September 30, 2014 and 2013 was 6.9%. Interest expense related to our 3% Convertible Senior Notes for the three and six months ended September 30, 2014 and 2013 was as follows (in thousands):
			Three Months Ended						Six Months Ended
			September 30,						September 30,
			2014			2013			2014		2013
		Contractual coupon interest	$	863		$	863		$	1,726	$	1,726
		Amortization of debt discount	1,048			789			2,067		1,710
		Total interest expense	$	1,911		$	1,652		$	3,793	$	3,436
	Term Loan and Revolving Credit Facility — During the six months ended September 30, 2014, we had borrowings of $218.0 million and made payments of $242.0 million under the Revolving Credit Facility. Additionally, we paid $2.3 million to reduce our borrowings under the Term Loan. As of September 30, 2014, we had $0.5 million in letters of credit outstanding under the Revolving Credit Facility.

FAIR_VALUE_DISCLOSURES

FAIR VALUE DISCLOSURES	6 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
FAIR VALUE DISCLOSURES	'
	FAIR VALUE DISCLOSURES
	Assets and liabilities subject to fair value measurement are categorized into one of three different levels depending on the observability of the inputs employed in the measurement, as follows:
	•	Level 1 – observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.
	•	Level 2 – inputs that reflect quoted prices for identical assets or liabilities in markets which are not active; quoted prices for similar assets or liabilities in active markets; inputs other than quoted prices that are observable for the asset or liability; or inputs that are derived principally from or corroborated by observable market data by correlation or other means.
	•	Level 3 – unobservable inputs reflecting the Company’s own assumptions incorporated in valuation techniques used to determine fair value. These assumptions are required to be consistent with market participant assumptions that are reasonably available.
	Non-recurring Fair Value Measurements
	The majority of our non-financial assets, which include inventories, property and equipment, assets held for sale, goodwill and other intangible assets, are not required to be carried at fair value on a recurring basis. However, if certain triggering events occur such that a non-financial asset is required to be evaluated for impairment and deemed to be impaired, the impaired non-financial asset is recorded at its fair value.
	The following table summarizes the assets as of September 30, 2014, valued at fair value on a non-recurring basis (in thousands):
			Quoted Prices in Active		Significant Other		Significant		Balance as of		Total			Total
			Markets for		Observable Inputs		Unobservable		September 30,		Loss for the			Loss for the
			Identical Assets		(Level 2)		Inputs		2014		Three Months			Six Months
			(Level 1)				(Level 3)				Ended			Ended
											September 30,			September 30,
											2014			2014
	Inventories		$	—	$	19,446	$	—	$	19,446	$	(3,362	)	$	(3,362	)
	Assets held for sale		—		4,650		—		4,650		(558		)	(3,137		)
	Total assets		$	—	$	24,096	$	—	$	24,096	$	(3,920	)	$	(6,499	)
	The following table summarizes the assets as of September 30, 2013, valued at fair value on a non-recurring basis (in thousands):
			Quoted Prices in Active		Significant Other		Significant		Balance as of		Total			Total
			Markets for		Observable Inputs		Unobservable		September 30,		Loss for the			Loss for the
			Identical Assets		(Level 2)		Inputs		2013		Three Months			Six Months
			(Level 1)				(Level 3)				Ended			Ended
											September 30,			September 30,
											2013			2013
	Inventories		$	—	$	18,365	$	—	$	18,365	$	(1,539	)	$	(2,364	)
	Assets held for sale		—		3,367		—		3,367		(950		)	(2,180		)
	Total assets		$	—	$	21,732	$	—	$	21,732	$	(2,489	)	$	(4,544	)
	The fair value of inventories using Level 2 inputs is determined by evaluating the current economic conditions for sale and disposal of spare parts, which includes estimates as to the recoverability of the carrying value of the parts based on historical experience with sales and disposal of similar spare parts, the expected timeframe of sales or disposals, the location of the spare parts to be sold and the condition of the spare parts to be sold or otherwise disposed of. The fair value of assets held for sale using Level 2 inputs is determined through evaluation of expected sales proceeds for aircraft. This analysis includes estimates based on historical experience with sales, recent transactions involving similar assets, quoted market prices for similar assets and condition and location of aircraft to be sold or otherwise disposed of. The loss for the three and six months ended September 30, 2014 related to two and six aircraft held for sale, respectively, and the loss for the three and six months ended September 30, 2013 related to one and three aircraft held for sale, respectively.
	Recurring Fair Value Measurements
	The following table summarizes the financial instruments we had as of September 30, 2014, valued at fair value on a recurring basis (in thousands):
			Quoted Prices		Significant		Significant		Balance as of		Balance  Sheet
			in Active		Other		Unobservable		September 30,		Classification
			Markets for		Observable		Inputs		2014
			Identical		Inputs		(Level 3)
			Assets		(Level 2)
			(Level 1)
	Rabbi Trust investments		$	5,413	$	—	$	—	$	5,413	Other assets
	Total assets		$	5,413	$	—	$	—	$	5,413
	Contingent consideration: (1)
	Current		$	—	$	—	$	7,770	$	7,770	Other accrued liabilities
	Long-term		—		—		23,886		23,886		Other liabilities and deferred credits
	Total liabilities		$	—	$	—	$	31,656	$	31,656
	______________
	(1)	Relates to our investment in Cougar Helicopters Inc. (“Cougar”). For further details on the Cougar investment, see Note 3 to the fiscal year 2014 Financial Statements.
	The following table summarizes the financial instruments we had as of March 31, 2014, valued at fair value on a recurring basis (in thousands):
			Quoted Prices		Significant		Significant		Balance as of		Balance  Sheet
			in Active		Other		Unobservable		March 31,		Classification
			Markets for		Observable		Inputs		2014
			Identical		Inputs		(Level 3)
			Assets		(Level 2)
			(Level 1)
	Rabbi Trust investments		$	6,599	$	—	$	—	$	6,599	Other assets
	Total assets		$	6,599	$	—	$	—	$	6,599
	Contingent consideration: (1)
	Current		$	—	$	—	$	7,652	$	7,652	Other accrued liabilities
	Long-term		—		—		23,670		23,670		Other liabilities and deferred credits
	Total liabilities		$	—	$	—	$	31,322	$	31,322
	______________
	(1)	Relates to our investment in Cougar. For further details on the Cougar investment, see Note 3 to the fiscal year 2014 Financial Statements.
	The rabbi trust investments consist of cash and mutual funds whose fair value are based on quoted prices in active markets for identical assets, and are designated as Level 1 within the valuation hierarchy. The rabbi trust holds investments related to our non-qualified deferred compensation plan for our senior executives.
	The following table provides a rollforward of the contingent consideration liability Level 3 fair value measurements during the six months ended September 30, 2014 (in thousands):
			Significant
			Unobservable
Inputs (Level 3)
Balance as of March 31, 2014		$	31,322
Change in fair value of contingent consideration		334
Balance as of September 30, 2014		$	31,656
We assess the estimated fair value of the contractual obligation to pay the contingent consideration on a quarterly basis and any changes in estimated fair value are recorded as accretion expense included in depreciation and amortization on our condensed consolidated statements of income. Fluctuations in the fair value of contingent consideration are impacted by two unobservable inputs, management's estimate of the probability of Cougar achieving certain agreed performance targets and the estimated discount rate. As of September 30 and March 31, 2014, the discount rate approximated 5% and 4%, respectively.
Fair Value of Financial Instruments
The fair value of our financial instruments has been estimated in accordance with the accounting standard regarding fair value. The fair value of our fixed rate long-term debt is estimated based on quoted market prices. The carrying and fair value of our long-term debt, including the current portion, are as follows (in thousands):
		30-Sep-14				31-Mar-14
		Carrying		Fair Value		Carrying		Fair Value
		Value				Value
6¼% Senior Notes		$	418,770	$	434,474	$	450,000	$	477,000
Term Loan		224,396		224,396		226,604		226,604
3% Convertible Senior Notes		111,971		123,775		109,904		142,382
Revolving Credit Facility		—		—		24,000		24,000
Eastern Airways debt		23,855		23,855		29,911		29,911
Other		542		542		883		883
		$	779,534	$	807,042	$	841,302	$	900,780
Other
The fair values of our cash and cash equivalents, accounts receivable and accounts payable approximate their carrying values due to the short-term nature of these items.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	COMMITMENTS AND CONTINGENCIES
	Aircraft Purchase Contracts — As shown in the table below, we expect to make additional capital expenditures over the next five fiscal years to purchase additional aircraft. As of September 30, 2014, we had 35 aircraft on order and options to acquire an additional 48 aircraft. Although a similar number of our existing aircraft may be sold during the same period, the additional aircraft on order will provide incremental fleet capacity in terms of revenue and operating income. As discussed in the fiscal year 2014 Financial Statements, we were awarded a contract to provide civilian SAR services for all of the U.K. The SAR configured aircraft on order in the table below are intended to service this contract and other SAR contracts.
			Six Months Ending March 31, 2015			Fiscal Year Ending March 31,
						2016			2017				2018		2019 and thereafter		Total
	Commitments as of September 30, 2014: (1)(4)
	Number of aircraft:
	Medium		—			7			—				—		—		7
	Large (2)		2			9			6				—		—		17
	SAR configured		5			6			—				—		—		11
			7			22			6				—		—		35
	Related expenditures (in thousands)(3)(4)
	Medium and large		$	74,420		$	284,874		$	71,606			$	—	$	—	$	430,900
	SAR configured		90,640			99,690			—				—		—		190,330
			$	165,060		$	384,564		$	71,606			$	—	$	—	$	621,230
	Options as of September 30, 2014:
	Number of aircraft:
	Medium		—			4			7				7		—		18
	Large (2)		—			3			12				12		3		30
			—			7			19				19		3		48
	Related expenditures (in thousands)(3)		$	34,458		$	224,754		$	401,642			$	280,152	$	37,966	$	978,972
	______
	(1)	Signed client contracts are currently in place that will utilize 15 of these aircraft.
	(2)	Five large aircraft on order and seven large aircraft under options expected to enter service between fiscal years 2017 and 2019 are subject to the successful development and certification of the aircraft.
	(3)	Includes progress payments on aircraft scheduled to be delivered in future periods.
	(4)	Excludes commitments related to sales leaseback advance. See Note 1 for further details.
	The following chart presents an analysis of our aircraft orders and options during fiscal year 2015:
				Three Months Ended
				30-Sep-14				30-Jun-14
				Orders		Options		Orders			Options
		Beginning of period		37		51		43			55
		Aircraft delivered		(2	)	—		(9	)		—
		Exercised options		—		—		3			(3	)
		Expired options		—		(3	)	—			(1	)
		End of period		35		48		37			51
	We periodically purchase aircraft for which we have no orders.
	Operating Leases — We have non-cancelable operating leases in connection with the lease of certain equipment, land and facilities, including leases for aircraft. Rental expense incurred under all operating leases was $35.4 million and $23.3 million for the three months ended September 30, 2014 and 2013, respectively, and $68.6 million and $46.4 million for the six months ended September 30, 2014 and 2013, respectively. Rental expense incurred under operating leases for aircraft was $28.5 million and $18.0 million for the three months ended September 30, 2014 and 2013, respectively, and $54.9 million and $36.1 million for the six months ended September 30, 2014 and 2013, respectively.
	During the three and six months ended September 30, 2014, we sold 14 aircraft for $380.7 million and entered into 14 separate agreements to lease back these aircraft. We did not enter into any sale leaseback transactions during the three months ended June 30, 2014.
	The aircraft leases range from base terms of 24 to 84 months with renewal options of up to 240 months in some cases, include purchase options upon expiration and some include early purchase options. The leases contain terms customary in transactions of this type, including provisions that allow the lessor to repossess the aircraft and require us to pay a stipulated amount if we default on our obligations under the agreements. The following is a summary of the terms related to aircraft leased under operating leases with original or remaining terms in excess of one year as of September 30, 2014:
		End of Lease Term		Number of Aircraft		Monthly Lease Payments
						(in thousands)
		Six months ending March 31, 2015 to fiscal year 2016		4		$	716
		Fiscal year 2017 to fiscal year 2019		28		4,589
		Fiscal year 2020 to fiscal year 2024		43		6,486
				75		$	11,791
	Employee Agreements — Approximately 47% of our employees are represented by collective bargaining agreements and/or unions. These agreements generally include annual escalations of up to 8%. Periodically, certain groups of our employees who are not covered by a collective bargaining agreement consider entering into such an agreement.
	During the three months ended September 30, 2014 and 2013, we recognized $0.3 million and $0.3 million, respectively, and during the six months ended September 30, 2014 and 2013, we recognized $0.9 million and $0.3 million, respectively, in severance expense included in direct costs and general administrative expense in our North America business unit primarily as a result of our planned closure of our Alaska operations. Additionally, we have employee agreements with members of senior management. For further details on the retirement of our former President and Chief Executive Officer, see Note 7.
	Environmental Contingencies — The U.S. Environmental Protection Agency, also referred to as the EPA, has in the past notified us that we are a potential responsible party, or PRP, at three former waste disposal facilities that are on the National Priorities List of contaminated sites. Under the federal Comprehensive Environmental Response, Compensation and Liability Act, also known as the Superfund law, persons who are identified as PRPs may be subject to strict, joint and several liability for the costs of cleaning up environmental contamination resulting from releases of hazardous substances at National Priorities List sites. Although we have not yet obtained a formal release of liability from the EPA with respect to any of the sites, we believe that our potential liability in connection with the sites is not likely to have a material adverse effect on our business, financial condition or results of operations.
	Other Purchase Obligations — As of September 30, 2014, we had $93.4 million of other purchase obligations representing unfilled purchase orders for aircraft parts, commitments associated with upgrading facilities at our bases and non-cancelable power-by-the-hour maintenance commitments.
	Other Matters — Although infrequent, aircraft accidents have occurred in the past, and the related losses and liability claims have been covered by insurance subject to deductible, self-insured retention and loss sensitive factors.
	On October 22, 2012, an incident occurred with an Airbus Helicopters EC225 Super Puma helicopter operated by another helicopter company, which resulted in a controlled ditching on the North Sea, south of the Shetland Isles, U.K. Following the ditching, all 19 passengers and crew were recovered safely and without injuries.
	This incident resulted in the CAAs in the U.K. and Norway issuing safety directives in October 2012, requiring operators to suspend operations of the affected aircraft and our cessation of operations of a total of 16 large Airbus Helicopters aircraft for a period of time pending determination of the root cause of the gear shaft failure that resulted in the incident. However, in July 2013 the European Aviation Safety Authority (the “EASA”) issued an airworthiness directive providing for interim solutions involving minor aircraft modifications and new maintenance/operating procedures for mitigating shaft failure and enhancing early detection which allows the EC225 to safely fly without the new shaft. We commenced return to operational service of our EC225 fleet in the third quarter of fiscal year 2014. The gear shaft has been redesigned and, in April 2014, Airbus Helicopters advised us that the EASA has certified the new shaft with the expectation that the global oil and gas fleet will have the new shaft installed in the next twelve to twenty-four months. We currently operate 23 of these aircraft including 12 owned and 11 leased aircraft. All of these aircraft are available for revenue service. Until the fleet is again fully operational and under commercial arrangements similar to before the operational suspension, this situation could have a material adverse effect on our future business, financial condition and results of operations.
	On February 20, 2014, the U.K. CAA issued a report detailing the findings and recommendations from its review of helicopter transport operations serving offshore installations in the U.K. The report, commonly referred to as CAP 1145, contains more than 60 safety actions and recommendations to improve the safety of offshore helicopter transport. Ten of the recommendations are designed to improve the survivability of passengers and crew following a ditching or impact in water.
	One safety directive, which went into effect on September 1, 2014, restricts seating capacity on some aircraft in the North Sea unless passengers are equipped with new emergency breathing systems or side floats are installed on the aircraft. Operational restrictions when sea states are above a certain prescribed level were effective on June 1, 2014 and further requirements will be implemented over the next 12 months, including the flight prohibition of individuals whose size exceeds the dimensions of emergency egress windows. Training of the North Sea offshore workforce on the new breathing systems and roll-out of the new breathing systems and supporting passenger life jackets incorporating this system commenced over the summer months with minimal impact to our operations.
	We believe CAP 1145 may make our industry safer. We are cooperating with the CAA, the Joint Operator's Review of Safety, and our clients in the North Sea to evaluate and deploy technologies that meet these new safety standards. We remain committed to ensuring that any impact to our operations is managed through our existing safety policies and programs and does not result in an elevated safety risk in the near term. The requirements could present North Sea operators, including us, with significant operational challenges, and it remains to be seen which of the new requirements, if any, will be adopted by regulatory authorities in other parts of the world in which we operate.
	We operate in jurisdictions internationally where we are subject to risks that include government action to obtain additional tax revenue.  In a number of these jurisdictions, political unrest, the lack of well-developed legal systems and legislation that is not clear enough in its wording to determine the ultimate application, can make it difficult to determine whether legislation may impact our earnings until such time as a clear court or other ruling exists.  We operate in jurisdictions currently where amounts may be due to governmental bodies that we are not currently recording liabilities for as it is unclear how broad or narrow legislation may ultimately be interpreted.  We believe that payment of amounts in these instances in not probable at this time, but is reasonably possible.
	A loss contingency is reasonably possible if it has a more than remote but less than probable chance of occurring. Although management believes that there is no clear requirement to pay amounts at this time and that positions exist suggesting that no further amounts are currently due, it is reasonably possible that a loss could occur, for which we have estimated a maximum loss at September 30, 2014 to be approximately $5 million to $8 million.
	We are a defendant in certain claims and litigation arising out of operations in the normal course of business. In the opinion of management, uninsured losses, if any, will not be material to our financial position, results of operations or cash flows.

TAXES

TAXES	6 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
TAXES	'
	TAXES
	Our effective income tax rates were 17.7% and 27.2% for the three months ended September 30, 2014 and 2013, respectively and 19.6% and 26.3% for the six months ended September 30, 2014 and 2013, respectively. Our effective income tax rates for the three and six months ended September 30, 2013 reflect $36.0 million of tax expense for the sale of the FB Entities, partially offset by a $2.1 million benefit due to the revaluation of our deferred taxes as a result of the enactment of a tax rate reduction in the U.K. Excluding these items, our effective tax rate decreased to 15.4% and 18.2% for the three and six months ended September 30, 2013, respectively. For further details on the sale of the FB Entities, see Note 3 to the fiscal year 2014 Financial Statements.
	For the three and six months ended September 30, 2014, our effective tax rate was impacted by the permanent reinvestment outside the U.S. of foreign earnings, upon which no U.S. tax has been provided, and by the amount of our foreign source income and our ability to realize foreign tax credits. As of September 30, 2014, there were $4.3 million of unrecognized tax benefits, all of which would have an impact on our effective tax rate, if recognized. The uncertain tax benefits relate to pre-acquisition tax matters for the February 2014 acquisition of a 60% interest in Eastern Airways and are the subject of an indemnity, for which a corresponding indemnity asset has been established in the amount of $4.2 million.

EMPLOYEE_BENEFIT_PLANS

EMPLOYEE BENEFIT PLANS	6 Months Ended
	Sep. 30, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
EMPLOYEE BENEFIT PLANS	'
	EMPLOYEE BENEFIT PLANS
	Pension Plans
	The following table provides a detail of the components of net periodic pension cost (in thousands):
				Three Months Ended						Six Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		Service cost for benefits earned during the period		$	2,087		$	2,070		$	4,333		$	4,121
		Interest cost on pension benefit obligation		6,437			6,602			13,366			13,140
		Expected return on assets		(7,638		)	(7,171		)	(15,861		)	(14,273		)
		Amortization of unrecognized losses		1,641			1,897			3,409			3,774
		Net periodic pension cost		$	2,527		$	3,398		$	5,247		$	6,762
	We pre-funded our contributions of £12.5 million ($20.8 million) to our U.K. Staff pension plan for fiscal year 2015 in the last quarter of fiscal year 2014. The current estimates of our cash contributions to our U.K. pension plans and Norwegian pension plan for fiscal year 2015 are $21.2 million and $7.9 million, respectively, of which $10.2 million and $6.0 million, respectively, were paid during the six months ended September 30, 2014.
	Incentive Compensation
	Stock–based awards are currently made under the Bristow Group Inc. 2007 Long-Term Incentive Plan (the “2007 Plan”). A maximum of 5,400,000 shares of common stock, par value $.01 per share (“Common Stock”), are reserved. Awards granted under the 2007 Plan may be in the form of stock options, stock appreciation rights, shares of restricted stock, other stock-based awards (payable in cash or Common Stock) or performance awards, or any combination thereof, and may be made to outside directors, employees or consultants. As of September 30, 2014, 2,352,001 shares remained available for grant under the 2007 Plan.
	We have a number of other incentive and stock option plans which are described in Note 10 to our fiscal year 2014 Financial Statements.
	Total stock-based compensation expense, which includes stock options and restricted stock, totaled $4.2 million and $3.7 million for the three months ended September 30, 2014 and 2013, respectively, and $8.4 million and $6.6 million for the six months ended September 30, 2014 and 2013, respectively. Stock-based compensation expense has been allocated to our various business units.
	During the three and six months ended September 30, 2014, we awarded 19,884 and 172,808 shares of restricted stock, respectively, at an average grant date fair value of $71.90 and $74.18 per share, respectively. Also during the three and six months ended September 30, 2014, 27,291 and 472,744 stock options were granted. The following table shows the assumptions used to compute the stock-based compensation expense for stock options granted during the six months ended September 30, 2014:
		Risk free interest rate	1.67	%
		Expected life (years)	5
		Volatility	34.2	%
		Dividend yield	1.92	%
		Weighted average exercise price of options granted	$74.52 per option
		Weighted average grant-date fair value of options granted	$17.21 per option
	Performance cash awards vest and pay out in cash three years after the date of grant at varying levels depending on our performance in Total Shareholder Return against a peer group of companies. These awards were designed to tie a significant portion of total compensation to performance. One of the effects of this type of compensation is that it requires liability accounting which can result in volatility in earnings. The liability recorded for these awards as of September 30 and March 31, 2014 was $13.3 million and $16.7 million, respectively, and represents an accrual based on the fair value of the awards on those dates. The decrease in the liability during the six months ended September 30, 2014 resulted from the payout in June 2014 of the awards granted in June 2011, partially offset by the value of the new awards granted in June 2014. Any changes in fair value of the awards in future quarters will increase or decrease the liability and impact results in those periods. The effect, either positive or negative, on future period earnings can vary based on factors including changes in our stock price or the stock prices of the peer group companies, as well as changes in other market and company-specific assumptions that are factored into the calculation of fair value of the performance cash awards.
	Compensation expense related to the performance cash awards recorded during the three months ended September 30, 2014 and 2013 was $2.5 million and $1.9 million, respectively, and during the six months ended September 30, 2014 and 2013 was $4.6 million and $3.7 million, respectively.
	Retirement of President and Chief Executive Officer
	On February 3, 2014, the Company announced that William E. Chiles would resign as President and Chief Executive Officer of the Company effective upon the conclusion of the 2014 annual meeting of the stockholders of the Company that was held on July 31, 2014. On June 9, 2014, Jonathan E. Baliff began serving as President and on July 31, 2014 he assumed the additional role of Chief Executive Officer of the Company. Mr. Baliff also became a member of the Board of Directors of the Company effective July 31, 2014. Mr. Chiles will remain an employee of the Company and will provide consulting services to the Company.
	Mr. Chiles and the Company entered into a Retirement and Consulting Agreement, dated January 30, 2014 (the “Agreement”) to specify the terms of his continued employment with the Company. Upon his resignation as an officer on July 31, 2014, Mr. Chiles received a lump sum cash payment of $3.8 million, which was equivalent to the amount that would have been payable as severance under the employment agreement that was in effect prior to the execution of the Agreement. In addition, all outstanding long-term incentive awards, other than awards granted in 2014, fully vested. Under the terms of the Agreement, following his resignation as an officer on July 31, 2014 and ending July 31, 2016, Mr. Chiles will provide consulting services to us relating to the achievement of certain business objectives and matters of strategy. Mr. Chiles is not eligible to receive grants of equity awards following the effective date of his resignation as an officer. The Agreement contains certain restrictive covenants and confidentiality provisions, including non-compete and non-solicitation obligations continuing for 18 months after Mr. Chiles terminates all employment and consulting services with us, and a mutual non-disparagement provision. We recorded additional compensation expense, included in general and administrative expense, of $1.8 million and $5.5 million during the three and six months ended September 30, 2014, respectively, related to the Agreement.

DIVIDENDS_SHARE_REPURCHASES_EA

DIVIDENDS, SHARE REPURCHASES, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME	6 Months Ended
	Sep. 30, 2014
Dividends, Share Repurchases, Earning Per Share and Accumulated Other Comprehensive Income [Abstract]	'
DIVIDENDS, SHARE REPURCHASES AND EARNINGS PER SHARE	'
	DIVIDENDS, SHARE REPURCHASES, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME
	Dividends
	On November 6, 2014, our board of directors approved a dividend of $0.32 per share of Common Stock, payable on December 15, 2014 to shareholders of record on November 28, 2014. See discussion of our dividends in Note 11 to our fiscal year 2014 Financial Statements. The declaration of future dividends is at the discretion of our board of directors and subject to our results of operations, financial condition, cash requirements and other factors and restrictions under applicable law and our debt instruments.
	Share Repurchases
	During the three and six months ended September 30, 2014, respectively, we spent $23.3 million and $43.4 million to repurchase 324,720 and 595,318 shares of our Common Stock. Subsequently, from October 1, 2014 through October 31, 2014, we spent $10.0 million to repurchase 146,900 additional shares of our Common Stock. As of October 31, 2014, we had $2.4 million of repurchase authority remaining from $133.4 million that was authorized for share repurchases between November 5, 2013 and November 5, 2014. On November 6, 2014, our board of directors extended the date to repurchase shares of our Common Stock through November 5, 2015 and increased the remaining authorized repurchase amount to a total of $150 million. For additional information on our repurchases of Common Stock, see “Share Repurchases” in Note 11 to the fiscal year 2014 Financial Statements. The timing and method of any repurchases under the program will depend on a variety of factors, is subject to our results of operations, financial condition, cash requirements, and other factors and restrictions under applicable law and our debt instruments, and may be suspended or discontinued at any time.
	Earnings per Share
	Basic earnings per common share is computed by dividing income available to common stockholders by the weighted average number of shares of Common Stock outstanding during the period. Diluted earnings per common share excludes options to purchase shares and restricted stock awards, which were outstanding during the period but were anti-dilutive, as follows:
				Three Months Ended						Six Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		Options:
		Outstanding		298,333			596,191			300,686			497,041
		Weighted average exercise price		$	62.17		$	53.1		$	62.17		$	50.84
		Restricted stock awards:
		Outstanding		2,313			—			1,150			5,611
		Weighted average price		$	72.98		$	—		$	72.98		$	68.31
	The following table sets forth the computation of basic and diluted earnings per share:
			Three Months Ended						Six Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
	Net income available to common stockholders (in thousands):
	Income available to common stockholders – basic		$	26,082		$	110,606		$	70,191		$	137,492
	Interest expense on assumed conversion of 3% Convertible Senior Notes, net of tax (1)		—			—			—			—
	Income available to common stockholders – diluted		$	26,082		$	110,606		$	70,191		$	137,492
	Shares:
	Weighted average number of common shares outstanding – basic		35,447,094			36,403,556			35,495,319			36,265,932
	Assumed conversion of 3% Convertible Senior Notes outstanding during the period (1)		—			—			—			—
	Net effect of dilutive stock options and restricted stock awards based on the treasury stock method		234,398			297,670			301,167			352,492
	Weighted average number of common shares outstanding – diluted		35,681,492			36,701,226			35,796,486			36,618,424
	Basic earnings per common share		$	0.74		$	3.04		$	1.98		$	3.79
	Diluted earnings per common share		$	0.73		$	3.01		$	1.96		$	3.75
	_____________
	(1)	Diluted earnings per common share for the three and six months ended September 30, 2014 and 2013 excludes a number of potentially dilutive shares determined pursuant to a specified formula initially issuable upon the conversion of our 3% Convertible Senior Notes. The 3% Convertible Senior Notes will be convertible, under certain circumstances, using a net share settlement process, into a combination of cash and our Common Stock. As of September 30, 2014, the base conversion price of the notes was approximately $74.05, based on the base conversion rate of 13.5048 shares of Common Stock per $1,000 principal amount of convertible notes (subject to adjustment in certain circumstances, including the payment of dividends). In general, upon conversion of a note, the holder will receive cash equal to the principal amount of the note and Common Stock to the extent of the note’s conversion value in excess of such principal amount. In addition, if at the time of conversion the applicable price of our Common Stock exceeds the base conversion price, holders will receive up to an additional 8.7781 shares of our Common Stock per $1,000 principal amount of notes, as determined pursuant to a specified formula. Such shares did not impact our calculation of diluted earnings per share for the three and six months ended September 30, 2014 and 2013 as our average stock price during these periods did not meet or exceed the conversion requirements.
	Accumulated Other Comprehensive Income
	The following table sets forth the changes in the balances of each component of accumulated other comprehensive income:
			Currency Translation Adjustments			Pension Liability Adjustments (1)			Total
	Balance as of March 31, 2014		$	57,812		$	(214,318	)	$	(156,506	)
	Other comprehensive income before reclassification		(10,482		)	—			(10,482		)
	Reclassified from accumulated other comprehensive income		—			—			—
	Net current period other comprehensive income		(10,482		)	—			(10,482		)
	Foreign exchange rate impact		(5,742		)	5,742			—
	Balance at September 30, 2014		$	41,588		$	(208,576	)	$	(166,988	)
	_____________
	(1)	Reclassification of amounts related to pension liability adjustments are included as a component of net periodic pension cost.

SEGMENT_INFORMATION

SEGMENT INFORMATION	6 Months Ended
	Sep. 30, 2014
Segments [Abstract]	'
SEGMENT INFORMATION	'
	SEGMENT INFORMATION
	We conduct our business in one segment: Helicopter Services. The Helicopter Services segment operations are conducted primarily through five business units: Europe, West Africa, North America, Australia, and Other International. Additionally, we operate a training business unit, Bristow Academy, and provide technical services to clients in the U.S. and U.K., which are included in Corporate and other.
	The following shows business unit information for the three and six months ended September 30, 2014 and 2013 and as of September 30 and March 31, 2014, where applicable, reconciled to consolidated totals, and prepared on the same basis as our condensed consolidated financial statements (in thousands):
			Three Months Ended						Six Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
		Business unit gross revenue from external clients:
		Europe	$	231,599		$	185,743		$	460,004		$	352,452
		West Africa	82,979			79,488			165,835			158,869
		North America	56,049			60,718			113,691			119,300
		Australia	53,027			40,466			104,630			84,464
		Other International	35,805			32,247			71,331			65,222
		Corporate and other	16,177			18,666			32,683			36,015
		Total business unit gross revenue	$	475,636		$	417,328		$	948,174		$	816,322
		Intra-business unit gross revenue:
		Europe	$	902		$	—		$	1,063		$	—
		West Africa	—			—			—			—
		North America	17			9			17			(7		)
		Australia	—			—			—			—
		Other International	—			—			8			—
		Corporate and other	1,122			1,210			1,893			2,073
		Total intra-business unit gross revenue	$	2,041		$	1,219		$	2,981		$	2,066
		Consolidated gross revenue reconciliation:
		Europe	$	232,501		$	185,743		$	461,067		$	352,452
		West Africa	82,979			79,488			165,835			158,869
		North America	56,066			60,727			113,708			119,293
		Australia	53,027			40,466			104,630			84,464
		Other International	35,805			32,247			71,339			65,222
		Corporate and other	17,299			19,876			34,576			38,088
		Intra-business unit eliminations	(2,041		)	(1,219		)	(2,981		)	(2,066		)
		Total consolidated gross revenue	$	475,636		$	417,328		$	948,174		$	816,322
			Three Months Ended						Six Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
		Earnings from unconsolidated affiliates, net of losses – equity method investments:
		Europe (1)	$	407		$	873		$	781		$	3,913
		North America	(113		)	112			(579		)	104
		Other International	(3,198		)	2,103			1,175			11,043
		Total earnings from unconsolidated affiliates, net of losses – equity method investments	$	(2,904	)	$	3,088		$	1,377		$	15,060
		Consolidated operating income (loss) reconciliation:
		Europe	$	39,581		$	32,958		$	79,950		$	52,979
		West Africa	19,025			18,231			35,687			37,484
		North America	7,923			9,164			20,469			17,287
		Australia	987			2,508			3,240			5,788
		Other International	2,956			8,654			13,358			27,096
		Corporate and other	(26,535		)	(14,516		)	(44,185		)	(25,795		)
		Gain (loss) on disposal of assets	127			(3,064		)	737			(4,785		)
		Total consolidated operating income	$	44,064		$	53,935		$	109,256		$	110,054
		Depreciation and amortization:
		Europe	$	10,538		$	8,206		$	20,260		$	15,454
		West Africa	3,538			3,435			7,077			6,695
		North America	6,238			6,057			11,014			12,196
		Australia	4,351			1,908			7,960			3,797
		Other International	3,684			3,586			7,088			7,216
		Corporate and other	(144		)	666			140			1,319
		Total depreciation and amortization	$	28,205		$	23,858		$	53,539		$	46,677
			September 30,			March 31,
			2014			2014
		Identifiable assets:
		Europe	$	819,899		$	932,803
		West Africa	446,969			454,161
		North America	548,644			487,659
		Australia	284,472			260,483
	Other International	551,863			579,571
	Corporate and other	626,550			683,580
	Total identifiable assets (2)	$	3,278,397		$	3,398,257
	Investments in unconsolidated affiliates – equity method investments:
	Europe	$	1,073		$	1,067
	North America	60,991			61,570
	Other International	192,829			193,692
	Total investments in unconsolidated affiliates – equity method investments	$	254,893		$	256,329
_____________
(1)	On July 14, 2013, we sold our 50% interest in the FB entities. See Note 3 to the fiscal year 2014 Financial Statements for further details on the sale of the FB Entities.
(2)	Includes $419.9 million and $477.9 million of construction in progress within property and equipment on our condensed consolidated balance sheets as of September 30 and March 31, 2014, respectively, which primarily represents progress payments on aircraft to be delivered in future periods.

SUPPLEMENTAL_CONDENSED_CONSOLI

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION	6 Months Ended
	Sep. 30, 2014
Supplemental Condensed Consolidating Financial Information [Abstract]	'
Additional Financial Information Disclosure [Text Block]	'
	SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION
	In connection with the issuance of the 6¼% Senior Notes and the 3% Convertible Senior Notes, the Guarantor Subsidiaries fully, unconditionally, jointly and severally guaranteed the payment obligations under these notes. The following supplemental financial information sets forth, on a consolidating basis, the balance sheet, statement of income, comprehensive income and cash flow information for Bristow Group Inc. (“Parent Company Only”), for the Guarantor Subsidiaries and for our other subsidiaries (the “Non-Guarantor Subsidiaries”). We have not presented separate financial statements and other disclosures concerning the Guarantor Subsidiaries because management has determined that such information is not material to investors.
	The supplemental condensed consolidating financial information has been prepared pursuant to the rules and regulations for condensed financial information and does not include all disclosures included in annual financial statements, although we believe that the disclosures made are adequate to make the information presented not misleading. The principal eliminating entries eliminate investments in subsidiaries, intercompany balances and intercompany revenue and expense.
	The allocation of the consolidated income tax provision was made using the with and without allocation method.
	Supplemental Condensed Consolidating Statement of Income
	Three Months Ended September 30, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Revenue:
	Gross revenue	$	—		$	73,715		$	401,921		$	—		$	475,636
	Intercompany revenue	311			25,187			—			(25,498		)	—
		311			98,902			401,921			(25,498		)	475,636
	Operating expense:
	Direct cost and reimbursable expense	—			56,888			281,978			—			338,866
	Intercompany expenses	—			—			25,498			(25,498		)	—
	Depreciation and amortization	1,420			11,886			14,899			—			28,205
	General and administrative	19,841			7,147			34,736			—			61,724
		21,261			75,921			357,111			(25,498		)	428,795
	Gain (loss) on disposal of assets	—			1,200			(1,073		)	—			127
	Earnings from unconsolidated affiliates, net of losses	15,992			—			(2,904		)	(15,992		)	(2,904		)
	Operating income	(4,958		)	24,181			40,833			(15,992		)	44,064
	Interest expense, net	28,492			(960		)	(35,104		)	—			(7,572		)
	Other income (expense), net	(916		)	169			(1,934		)	—			(2,681		)
	Income before provision for income taxes	22,618			23,390			3,795			(15,992		)	33,811
	Allocation of consolidated income taxes	3,473			(994		)	(8,465		)	—			(5,986		)
	Net income	26,091			22,396			(4,670		)	(15,992		)	27,825
	Net income attributable to noncontrolling interests	(9		)	—			(1,734		)	—			(1,743		)
	Net income attributable to Bristow Group	$	26,082		$	22,396		$	(6,404	)	$	(15,992	)	$	26,082
	Supplemental Condensed Consolidating Statement of Income
	Six Months Ended September 30, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Revenue:
	Gross revenue	$	—		$	149,352		$	798,822		$	—		$	948,174
	Intercompany revenue	864			50,013			—			(50,877		)	—
		864			199,365			798,822			(50,877		)	948,174
	Operating expense:
	Direct cost and reimbursable expense	—			109,953			555,384			—			665,337
	Intercompany expenses	—			—			50,877			(50,877		)	—
	Depreciation and amortization	1,278			22,101			30,160			—			53,539
	General and administrative	38,178			17,246			66,732			—			122,156
		39,456			149,300			703,153			(50,877		)	841,032
	Gain (loss) on disposal of assets	—			2,538			(1,801		)	—			737
	Earnings from unconsolidated affiliates, net of losses	52,984			—			1,377			(52,984		)	1,377
	Operating income	14,392			52,603			95,245			(52,984		)	109,256
	Interest expense, net	56,010			(1,966		)	(68,743		)	—			(14,699		)
	Other income (expense), net	(1,844		)	97			(2,173		)	—			(3,920		)
	Income before provision for income taxes	68,558			50,734			24,329			(52,984		)	90,637
	Allocation of consolidated income taxes	1,660			(761		)	(18,708		)	—			(17,809		)
	Net income	70,218			49,973			5,621			(52,984		)	72,828
	Net income attributable to noncontrolling interests	(27		)	—			(2,610		)	—			(2,637		)
	Net income attributable to Bristow Group	$	70,191		$	49,973		$	3,011		$	(52,984	)	$	70,191
	Supplemental Condensed Consolidating Statement of Income
	Three Months Ended September 30, 2013
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Revenue:
Gross revenue	$	—		$	78,518		$	338,810		$	—		$	417,328
Intercompany revenue	374			21,506			—			(21,880		)	—
	374			100,024			338,810			(21,880		)	417,328
Operating expense:
Direct cost and reimbursable expense	—			57,543			235,537			—			293,080
Intercompany expenses	—			—			21,880			(21,880		)	—
Depreciation and amortization	736			11,048			12,074			—			23,858
General and administrative	14,343			8,574			23,562			—			46,479
	15,079			77,165			293,053			(21,880		)	363,417
Loss on disposal of assets	—			(2,927		)	(137		)	—			(3,064		)
Earnings from unconsolidated affiliates, net of losses	138,158			—			3,088			(138,158		)	3,088
Operating income	123,453			19,932			48,708			(138,158		)	53,935
Interest expense, net	21,904			(1,476		)	(28,744		)	—			(8,316		)
Gain on sale of unconsolidated affiliate	—			—			103,924			—			103,924
Other income (expense), net	(120		)	(174		)	1,781			—			1,487
Income before provision for income taxes	145,237			18,282			125,669			(138,158		)	151,030
Allocation of consolidated income taxes	(34,617		)	(1,843		)	(4,686		)	—			(41,146		)
Net income	110,620			16,439			120,983			(138,158		)	109,884
Net (income) loss attributable to noncontrolling interests	(14		)	—			736			—			722
Net income attributable to Bristow Group	$	110,606		$	16,439		$	121,719		$	(138,158	)	$	110,606
Supplemental Condensed Consolidating Statement of Income
Six Months Ended September 30, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Revenue:
Gross revenue	$	—		$	155,161		$	661,161		$	—		$	816,322
Intercompany revenue	748			41,872			—			(42,620		)	—
	748			197,033			661,161			(42,620		)	816,322
Operating expense:
Direct cost and reimbursable expense	—			114,987			470,092			—			585,079
Intercompany expenses	—			—			42,620			(42,620		)	—
Depreciation and amortization	1,453			21,731			23,493			—			46,677
General and administrative	26,133			16,159			44,495			—			86,787
	27,586			152,877			580,700			(42,620		)	718,543
Loss on disposal of assets	—			(1,539		)	(3,246		)	—			(4,785		)
Earnings from unconsolidated affiliates, net of losses	169,908			—			17,060			(169,908		)	17,060
Operating income	143,070			42,617			94,275			(169,908		)	110,054
Interest expense, net	29,505			(1,507		)	(56,565		)	—			(28,567		)
Gain on sale of unconsolidated affiliate	—			—			103,924			—			103,924
Other income (expense), net	(118		)	(160		)	399			—			121
Income before provision for income taxes	172,457			40,950			142,033			(169,908		)	185,532
Allocation of consolidated income taxes	(34,934		)	(2,368		)	(11,434		)	—			(48,736		)
Net income	137,523			38,582			130,599			(169,908		)	136,796
Net (income) loss attributable to noncontrolling interests	(31		)	—			727			—			696
Net income attributable to Bristow Group	$	137,492		$	38,582		$	131,326		$	(169,908	)	$	137,492
Supplemental Condensed Consolidating Statement of Comprehensive Income
Three Months Ended September 30, 2014
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net income	$	26,091		$	22,396		$	(4,670	)	$	(15,992	)	$	27,825
Other comprehensive income:
Currency translation adjustments	(4,650		)	—			33,613			(48,470		)	(19,507		)
Total comprehensive income	21,441			22,396			28,943			(64,462		)	8,318
Net income attributable to noncontrolling interests	(9		)	—			(1,734		)	—			(1,743		)
Currency translation adjustments attributable to noncontrolling interests	—			—			(183		)	—			(183		)
Total comprehensive income attributable to noncontrolling interests	(9		)	—			(1,917		)	—			(1,926		)
Total comprehensive income attributable to Bristow Group	$	21,432		$	22,396		$	27,026		$	(64,462	)	$	6,392
Supplemental Condensed Consolidating Statement of Comprehensive Income
Six Months Ended September 30, 2014
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net income	$	70,218		$	49,973		$	5,621		$	(52,984	)	$	72,828
Other comprehensive income:
Currency translation adjustments	(11,686		)	—			13,968			(12,798		)	(10,516		)
Total comprehensive income	58,532			49,973			19,589			(65,782		)	62,312
Net income attributable to noncontrolling interests	(27		)	—			(2,610		)	—			(2,637		)
Currency translation adjustments attributable to noncontrolling interests	—			—			34			—			34
Total comprehensive income attributable to noncontrolling interests	(27		)	—			(2,576		)	—			(2,603		)
Total comprehensive income attributable to Bristow Group	$	58,505		$	49,973		$	17,013		$	(65,782	)	$	59,709
Supplemental Condensed Consolidating Statement of Comprehensive Income
Three Months Ended September 30, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net income	$	110,620		$	16,439		$	120,983		$	(138,158	)	$	109,884
Other comprehensive income:
Currency translation adjustments	3,105			—			(14,710		)	27,479			15,874
Total comprehensive income	113,725			16,439			106,273			(110,679		)	125,758
Net (income) loss attributable to noncontrolling interests	(14		)	—			736			—			722
Currency translation adjustments attributable to noncontrolling interests	—			—			(108		)	—			(108		)
Total comprehensive (income) loss attributable to noncontrolling interests	(14		)	—			628			—			614
Total comprehensive income attributable to Bristow Group	$	113,711		$	16,439		$	106,901		$	(110,679	)	$	126,372
Supplemental Condensed Consolidating Statement of Comprehensive Income
Six Months Ended September 30, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net income	$	137,523		$	38,582		$	130,599		$	(169,908	)	$	136,796
Other comprehensive income:
Currency translation adjustments	4,025			—			(21,657		)	29,077			11,445
Total comprehensive income	141,548			38,582			108,942			(140,831		)	148,241
Net (income) loss attributable to noncontrolling interests	(31		)	—			727			—			696
Currency translation adjustments attributable to noncontrolling interests	—			—			(238		)	—			(238		)
Total comprehensive (income) loss attributable to noncontrolling interests	(31		)	—			489			—			458
Total comprehensive income attributable to Bristow Group	$	141,517		$	38,582		$	109,431		$	(140,831	)	$	148,699
Supplemental Condensed Consolidating Balance Sheet
As of September 30, 2014
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	54,476		$	13,768		$	195,666		$	—		$	263,910
Accounts receivable	117,863			165,742			340,259			(328,454		)	295,410
Inventories	—			43,312			99,502			—			142,814
Assets held for sale	—			9,898			22,190			—			32,088
Prepaid expenses and other current assets	3,498			4,683			43,542			—			51,723
Total current assets	175,837			237,403			701,159			(328,454		)	785,945
Intercompany investment	1,340,098			111,435			—			(1,451,533		)	—
Investment in unconsolidated affiliates	—			—			259,262			—			259,262
Intercompany notes receivable	1,066,847			—			—			(1,066,847		)	—
Property and equipment—at cost:
Land and buildings	2,688			49,236			102,078			—			154,002
Aircraft and equipment	88,051			1,127,606			1,227,561			—			2,443,218
	90,739			1,176,842			1,329,639			—			2,597,220
Less: Accumulated depreciation and amortization	(14,301		)	(211,745		)	(284,849		)	—			(510,895		)
	76,438			965,097			1,044,790			—			2,086,325
Goodwill	—			4,755			50,765			—			55,520
Other assets	172,396			2,627			56,122			(139,800		)	91,345
Total assets	$	2,831,616		$	1,321,317		$	2,112,098		$	(2,986,634	)	$	3,278,397
LIABILITIES AND STOCKHOLDERS’ INVESTMENT
Current liabilities:
Accounts payable	$	52,973		$	146,863		$	201,656		$	(321,693	)	$	79,799
Accrued liabilities	29,300			28,447			141,765			(6,943		)	192,569
Current deferred taxes	(7,961		)	611			19,404			—			12,054
Short-term borrowings and current maturities of long-term debt	6,815			—			6,854			—			13,669
Deferred sale leaseback advance	—			137,969			—			—			137,969
Total current liabilities	81,127			313,890			369,679			(328,636		)	436,060
Long-term debt, less current maturities	748,322			—			17,543			—			765,865
Intercompany notes payable	—			132,735			1,074,931			(1,207,666		)	—
Accrued pension liabilities	—			—			71,815			—			71,815
Other liabilities and deferred credits	13,478			8,585			34,192			—			56,255
Deferred taxes	137,896			8,191			20,567			—			166,654
Temporary equity	—			—			24,264			—			24,264
Stockholders’ investment:
Common stock	375			4,996			22,876			(27,872		)	375
Additional paid-in-capital	769,891			9,291			270,905			(280,196		)	769,891
Retained earnings	1,292,722			843,629			180,170			(1,023,799		)	1,292,722
Accumulated other comprehensive income (loss)	(66,405		)	—			17,882			(118,465		)	(166,988		)
Treasury shares	(147,388		)	—			—			—			(147,388		)
Total Bristow Group stockholders’ investment	1,849,195			857,916			491,833			(1,450,332		)	1,748,612
Noncontrolling interests	1,598			—			7,274			—			8,872
Total stockholders’ investment	1,850,793			857,916			499,107			(1,450,332		)	1,757,484
Total liabilities and stockholders’ investment	$	2,831,616		$	1,321,317		$	2,112,098		$	(2,986,634	)	$	3,278,397
Supplemental Condensed Consolidating Balance Sheet
As of March 31, 2014
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	4,640		$	—		$	200,147		$	(446	)	$	204,341
Accounts receivable	32,280			104,155			310,288			(149,280		)	297,443
Inventories	—			40,864			96,599			—			137,463
Assets held for sale	—			8,505			20,771			—			29,276
Prepaid expenses and other current assets	3,882			3,258			45,944			—			53,084
Total current assets	40,802			156,782			673,749			(149,726		)	721,607
Intercompany investment	1,273,337			111,435			—			(1,384,772		)	—
Investment in unconsolidated affiliates	—			—			262,615			—			262,615
Intercompany notes receivable	1,286,354			—			—			(1,286,354		)	—
Property and equipment—at cost:
Land and buildings	977			49,499			95,497			—			145,973
Aircraft and equipment	64,094			1,357,126			1,224,930			—			2,646,150
	65,071			1,406,625			1,320,427			—			2,792,123
Less: Accumulated depreciation and amortization	(13,057		)	(211,385		)	(298,930		)	—			(523,372		)
	52,014			1,195,240			1,021,497			—			2,268,751
Goodwill	—			4,755			51,925			—			56,680
Other assets	204,679			1,462			50,392			(167,929		)	88,604
Total assets	$	2,857,186		$	1,469,674		$	2,060,178		$	(2,988,781	)	$	3,398,257
LIABILITIES AND STOCKHOLDERS’ INVESTMENT
Current liabilities:
Accounts payable	$	8,298		$	67,728		$	157,297		$	(143,505	)	$	89,818
Accrued liabilities	36,442			32,084			141,423			(5,451		)	204,498
Current deferred taxes	(7,640		)	(1,342		)	21,354			—			12,372
Short-term borrowings and current maturities of long-term debt	4,543			—			9,664			—			14,207
Deferred sale leaseback	—			136,930			—			—			136,930
Total current liabilities	41,643			235,400			329,738			(148,956		)	457,825
Long-term debt, less current maturities	805,965			—			21,130			—			827,095
Intercompany notes payable	—			378,983			1,076,292			(1,455,275		)	—
Accrued pension liabilities	—			—			86,823			—			86,823
Other liabilities and deferred credits	13,750			37,876			26,500			—			78,126
Deferred taxes	144,461			9,472			15,586			—			169,519
Temporary equity	—			—			22,283			—			22,283
Stockholders’ investment:
Common stock	373			4,996			22,876			(27,872		)	373
Additional paid-in-capital	762,813			9,291			270,905			(280,196		)	762,813
Retained earnings	1,245,220			793,656			177,159			(970,815		)	1,245,220
Accumulated other comprehensive income (loss)	(54,719		)	—			3,880			(105,667		)	(156,506		)
Treasury shares	(103,965		)	—			—			—			(103,965		)
Total Bristow Group stockholders’ investment	1,849,722			807,943			474,820			(1,384,550		)	1,747,935
Noncontrolling interests	1,645			—			7,006			—			8,651
Total stockholders’ investment	1,851,367			807,943			481,826			(1,384,550		)	1,756,586
Total liabilities and stockholders’ investment	$	2,857,186		$	1,469,674		$	2,060,178		$	(2,988,781	)	$	3,398,257
Supplemental Condensed Consolidating Statement of Cash Flows
Six Months Ended September 30, 2014
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net cash provided by (used in) operating activities	$	(45,192	)	$	115,666		$	30,247		$	446		$	101,167
Cash flows from investing activities:
Capital expenditures	(25,668		)	(141,269		)	(135,182		)	—			(302,119		)
Proceeds from asset dispositions	—			208,373			189,271			—			397,644
Net cash provided by (used in) investing activities	(25,668		)	67,104			54,089			—			95,525
Cash flows from financing activities:
Proceeds from borrowings	218,000			—			1,354			—			219,354
Repayment of debt	(275,502		)	—			(7,336		)	—			(282,838		)
Dividends paid	(22,689		)	—			—			—			(22,689		)
Increases (decreases) in cash related to intercompany advances and debt	241,300			(169,002		)	(72,298		)	—			—
Partial prepayment of put/call obligation	(30		)	—			—			—			(30		)
Acquisition of noncontrolling interest	—			—			(3,170		)	—			(3,170		)
Repurchase of Common Stock	(43,423		)	—			—			—			(43,423		)
Issuance of Common Stock	1,398			—			—			—			1,398
Tax benefit related to stock-based compensation	1,642			—			—			—			1,642
Net cash provided by (used in) financing activities	120,696			(169,002		)	(81,450		)	—			(129,756		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(7,367		)	—			(7,367		)
Net increase (decrease) in cash and cash equivalents	49,836			13,768			(4,481		)	446			59,569
Cash and cash equivalents at beginning of period	4,640			—			200,147			(446		)	204,341
Cash and cash equivalents at end of period	$	54,476		$	13,768		$	195,666		$	—		$	263,910
Supplemental Condensed Consolidating Statement of Cash Flows
Six Months Ended September 30, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net cash provided by (used in) operating activities	$	(20,277	)	$	46,258		$	106,495		$	—		$	132,476
Cash flows from investing activities:
Capital expenditures	(11,206		)	(275,801		)	(158,415		)	105,863			(339,559		)
Proceeds from asset dispositions	—			154,689			106,777			(105,863		)	155,603
Proceeds from sale of unconsolidated affiliate	—			—			112,210			—			112,210
Net cash provided by (used in) investing activities	(11,206		)	(121,112		)	60,572			—			(71,746		)
Cash flows from financing activities:
Proceeds from borrowings	157,500			—			2,646			—			160,146
Debt issuance costs	(15,152		)	—			—			—			(15,152		)
Repayment of debt	(114,806		)	—			(2,942		)	—			(117,748		)
Dividends paid	(15,072		)	34			(3,100		)	—			(18,138		)
Increases (decreases) in cash related to intercompany advances and debt	(24,615		)	73,818			(49,203		)	—			—
Partial prepayment of put/call obligation	(27		)	—			—			—			(27		)
Issuance of Common Stock	11,550			—			—			—			11,550
Tax benefit related to stock-based compensation	4,234			—			—			—			4,234
Net cash provided by (used in) financing activities	3,612			73,852			(52,599		)	—			24,865
Effect of exchange rate changes on cash and cash equivalents	—			—			12,303			—			12,303
Net increase (decrease) in cash and cash equivalents	(27,871		)	(1,002		)	126,771			—			97,898
Cash and cash equivalents at beginning of period	31,853			5,370			178,400			—			215,623
Cash and cash equivalents at end of period	$	3,982		$	4,368		$	305,171		$	—		$	313,521

BASIS_OF_PRESENTATION_CONSOLID1

BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended
	Sep. 30, 2014
Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]	'
Revenue Recognition, Policy [Policy Text Block]	'
	Revenue Recognition
	In general, we recognize revenue when it is both realized or realizable and earned. We consider revenue to be realized or realizable and earned when the following conditions exist: there is persuasive evidence of an arrangement, generally a client contract exists; the services or products have been performed or delivered to the client; the sales price is fixed or determinable; and collection is probable. More specifically, revenue from helicopter services is recognized based on contractual rates as the related services are performed. The charges under these contracts are generally based on a two-tier rate structure consisting of a daily or monthly fixed fee plus additional fees for each hour flown. These contracts are for varying periods and generally permit the client to cancel the contract before the end of the term. We also provide services to clients on an “ad hoc” basis, which usually entails a shorter contract notice period and duration. The charges for ad hoc services are based on an hourly rate or a daily or monthly fixed fee plus additional fees for each hour flown. In order to offset potential increases in operating costs, our long-term contracts may provide for periodic increases in the contractual rates charged for our services. We recognize the impact of these rate increases when the criteria outlined above have been met. This generally includes written recognition from the clients that they are in agreement with the amount of the rate escalation. Cost reimbursements from clients are recorded as reimbursable revenue with the related reimbursed costs recorded as reimbursable expense on our condensed consolidated statements of income.
	Bristow Academy, our helicopter training business unit, primarily earns revenue from military training, flight training provided to individual students and ground school courses. We recognize revenue from these sources using the same revenue recognition principles described above as services are provided. We consider revenue to be realized or realizable and earned when the following conditions exist: there is persuasive evidence of an arrangement, generally a contract exists; the services have been performed or delivered to the client or student; the sales price is fixed and determinable; and collection has occurred or is probable.
	Eastern Airways International Limited ("Eastern Airways") primarily earns revenue through charter and scheduled airline services and provision of airport services. Both chartered and scheduled revenue is recognized net of passenger taxes and discounts. Revenue is recognized at the earlier of the period in which the service is provided or the period in which the right to travel expires, which is determined by the terms and conditions of the ticket. Ticket sales are recorded within deferred revenue until recognized as revenue in accordance with the above policy. Airport services revenue is recognized when earned.

BASIS_OF_PRESENTATION_CONSOLID2

BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	6 Months Ended
	Sep. 30, 2014
Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]	'
Schedule of Foreign Exchange Rate [Table Text Block]	'
	The value of the Brazilian real has fluctuated relative to the U.S. dollar as indicated in the following table:
				Three Months Ended						Six Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		One Brazilian real into U.S. dollars
		High		0.4534			0.4568			0.4572			0.5123
		Average		0.4398			0.438			0.4445			0.4617
		Low		0.4066			0.4093			0.4066			0.4093
		At period-end		0.4102			0.4475			0.4102			0.4475
	The value of these currencies has fluctuated relative to the U.S. dollar as indicated in the following table:
				Three Months Ended						Six Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		One British pound sterling into U.S. dollars
		High		1.72			1.62			1.72			1.62
		Average		1.67			1.55			1.68			1.54
		Low		1.61			1.48			1.61			1.48
		At period-end		1.62			1.62			1.62			1.62
		One euro into U.S. dollars
		High		1.37			1.35			1.39			1.35
		Average		1.33			1.32			1.35			1.32
		Low		1.26			1.28			1.26			1.26
		At period-end		1.26			1.35			1.26			1.35
		One Australian dollar into U.S. dollars
		High		0.95			0.95			0.95			1.07
		Average		0.93			0.92			0.93			0.95
		Low		0.87			0.89			0.87			0.89
		At period-end		0.88			0.94			0.88			0.94
		One Nigerian naira into U.S. dollars
		High		0.0062			0.0064			0.0063			0.0065
		Average		0.0061			0.0063			0.0062			0.0063
		Low		0.006			0.0061			0.006			0.0061
		At period-end		0.006			0.0063			0.006			0.0063
Schedule of Foreign Exchange Impact [Table Text Block]	'
	We estimate that the fluctuation of currencies versus the same period in the prior fiscal year had the following effect on our financial condition and results of operations (in thousands):
				Three Months Ended				Six Months Ended
				September 30, 2014				September 30, 2014
		Revenue		$	9,510			$	19,855
		Operating expense		(6,027		)		(12,109		)
		Earnings from unconsolidated affiliates, net of losses		(6,620		)		(5,898		)
		Non-operating expense		(2,112		)		(1,163		)
		Income before provision for income taxes		(5,249		)		685
		Benefit (provision) for income taxes		1,220				(145		)
		Net income		(4,029		)		540
		Cumulative translation adjustment		(19,690		)		(10,482		)
		Total stockholders’ investment		$	(23,719	)		$	(9,942	)
Interest Income and Interest Expense Disclosure [Table Text Block]	'
	During the three and six months ended September 30, 2014 and 2013, interest expense, net consisted of the following (in thousands):
			Three Months Ended								Six Months Ended
			September 30,								September 30,
			2014				2013				2014			2013
		Interest income	$	386			$	762			$	622		$	881
		Interest expense	(7,958		)		(9,078		)		(15,321		)	(29,448		)
		Interest expense, net	$	(7,572	)		$	(8,316	)		$	(14,699	)	$	(28,567	)
Capital expenditures [Table Text Block]	'
	During the three and six months ended September 30, 2014 and 2013, we made capital expenditures as follows:
			Three Months Ended								Six Months Ended
			September 30,								September 30,
			2014				2013				2014			2013
		Number of aircraft delivered:
		Medium	—				3				3			5
		Large	2				2				8			5
		Total aircraft	2				5				11			10
		Capital expenditures (in thousands):
		Aircraft and related equipment (1)	$	65,386			$	145,653			$	237,484		$	312,880
		Other	36,286				14,374				64,635			26,679
		Total capital expenditures	$	101,672			$	160,027			$	302,119		$	339,559
Aircraft Sales And Impairments [Table Text Block]	'
	Additionally, the following table presents details on the aircraft sold or disposed of and impairments on assets held for sale during the three and six months ended September 30, 2014 and 2013:
			Three Months Ended								Six Months Ended
			September 30,								September 30,
			2014				2013				2014			2013
			(In thousands, except for number of aircraft)
		Number of aircraft sold or disposed of (1)	21				11				25			15
		Proceeds from sale or disposal of assets (1)	$	391,001			$	153,710			$	397,644		$	155,603
		Gain (loss) from sale or disposal of assets	$	685			$	(2,114	)		$	3,874		$	(2,605	)
		Number of aircraft impaired	2				1				6			3
		Impairment charges on aircraft held for sale	$	(558	)		$	(950	)		$	(3,137	)	$	(2,180	)

VARIABLE_INTEREST_ENTITIES_AND1

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (Tables)	6 Months Ended
	Sep. 30, 2014
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]	'
Primary beneficiary variable interest entity balance sheet	'
	Bristow Aviation and its subsidiaries are exposed to similar operational risks and are therefore monitored and evaluated on a similar basis by management. Accordingly, the financial information reflected on our condensed consolidated balance sheets and statements of income for Bristow Aviation and subsidiaries is presented in the aggregate, including intercompany amounts with other consolidated entities, as follows (in thousands):
			September 30,			March 31,
			2014			2014
		Assets
		Cash and cash equivalents	$	124,037		$	173,490
		Accounts receivable	381,721			311,641
		Inventories	96,551			94,288
		Prepaid expenses and other current assets	77,883			45,791
		Total current assets	680,192			625,210
		Investment in unconsolidated affiliates	1,321			1,414
		Property and equipment, net	234,041			217,969
		Goodwill	40,055			41,218
		Other assets	51,840			45,477
		Total assets	$	1,007,449		$	931,288
		Liabilities
		Accounts payable	$	270,915		$	182,892
		Accrued liabilities	122,404			113,820
		Accrued interest	1,390,337			1,291,581
		Deferred taxes	1,631			3,588
		Current maturities of long-term debt	6,854			9,664
		Total current liabilities	1,792,141			1,601,545
		Long-term debt, less current maturities	165,072			172,391
		Accrued pension liabilities	71,815			86,824
		Other liabilities and deferred credits	8,714			2,252
		Deferred taxes	10,820			13,062
		Temporary equity	24,264			22,283
		Total liabilities	$	2,072,826		$	1,898,357
Primary beneficiary variable interest income statement items	'
			Three Months Ended					Six Months Ended
			September 30,					September 30,
			2014			2013		2014			2013
		Revenue	$	391,615		$	330,006	$	775,432		$	641,807
		Operating income	7,018			18,536		23,718			27,667
		Net income (loss) (1)	(47,767		)	81,236		(85,348		)	48,886

DEBT_Tables

DEBT (Tables)	6 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Schedule of debt	'
	Debt as of September 30 and March 31, 2014 consisted of the following (in thousands):
			September 30,			March 31,
			2014			2014
		6¼% Senior Notes due 2022	$	418,770		$	450,000
		Term Loan	224,396			226,604
		3% Convertible Senior Notes due 2038, including $3.0 million and $5.1 million of unamortized discount, respectively	111,971			109,904
		Revolving Credit Facility	—			24,000
		Eastern Airways debt	23,855			29,911
		Other	542			883
		Total debt	779,534			841,302
		Less short-term borrowings and current maturities of long-term debt	(13,669		)	(14,207		)
		Total long-term debt	$	765,865		$	827,095
Schedule of convertible debt	'
	The balances of the debt and equity components of the 3% Convertible Senior Notes due 2038 (the “3% Convertible Senior Notes”) as of September 30 and March 31, 2014 are as follows (in thousands):
			September 30,			March 31,
			2014			2014
		Equity component – net carrying value	$	14,905		$	14,905
		Debt component:
		Face amount due at maturity	$	115,000		$	115,000
		Unamortized discount	(3,029		)	(5,096		)
		Debt component – net carrying value	$	111,971		$	109,904
Schedule of convertible debt interest expense	'
	Interest expense related to our 3% Convertible Senior Notes for the three and six months ended September 30, 2014 and 2013 was as follows (in thousands):
			Three Months Ended						Six Months Ended
			September 30,						September 30,
			2014			2013			2014		2013
		Contractual coupon interest	$	863		$	863		$	1,726	$	1,726
		Amortization of debt discount	1,048			789			2,067		1,710
		Total interest expense	$	1,911		$	1,652		$	3,793	$	3,436

FAIR_VALUE_DISCLOSURES_Tables

FAIR VALUE DISCLOSURES (Tables)	6 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Schedule of fair value assets measured on non-recurring basis	'
	The following table summarizes the assets as of September 30, 2013, valued at fair value on a non-recurring basis (in thousands):
		Quoted Prices in Active		Significant Other		Significant		Balance as of		Total			Total
		Markets for		Observable Inputs		Unobservable		September 30,		Loss for the			Loss for the
		Identical Assets		(Level 2)		Inputs		2013		Three Months			Six Months
		(Level 1)				(Level 3)				Ended			Ended
										September 30,			September 30,
										2013			2013
	Inventories	$	—	$	18,365	$	—	$	18,365	$	(1,539	)	$	(2,364	)
	Assets held for sale	—		3,367		—		3,367		(950		)	(2,180		)
	Total assets	$	—	$	21,732	$	—	$	21,732	$	(2,489	)	$	(4,544	)
	The following table summarizes the assets as of September 30, 2014, valued at fair value on a non-recurring basis (in thousands):
		Quoted Prices in Active		Significant Other		Significant		Balance as of		Total			Total
		Markets for		Observable Inputs		Unobservable		September 30,		Loss for the			Loss for the
		Identical Assets		(Level 2)		Inputs		2014		Three Months			Six Months
		(Level 1)				(Level 3)				Ended			Ended
										September 30,			September 30,
										2014			2014
	Inventories	$	—	$	19,446	$	—	$	19,446	$	(3,362	)	$	(3,362	)
	Assets held for sale	—		4,650		—		4,650		(558		)	(3,137		)
	Total assets	$	—	$	24,096	$	—	$	24,096	$	(3,920	)	$	(6,499	)
Schedule of fair value assets measured on recurring basis	'
	The following table summarizes the financial instruments we had as of September 30, 2014, valued at fair value on a recurring basis (in thousands):
		Quoted Prices		Significant		Significant		Balance as of		Balance  Sheet
		in Active		Other		Unobservable		September 30,		Classification
		Markets for		Observable		Inputs		2014
		Identical		Inputs		(Level 3)
		Assets		(Level 2)
		(Level 1)
	Rabbi Trust investments	$	5,413	$	—	$	—	$	5,413	Other assets
	Total assets	$	5,413	$	—	$	—	$	5,413
	Contingent consideration: (1)
	Current	$	—	$	—	$	7,770	$	7,770	Other accrued liabilities
	Long-term	—		—		23,886		23,886		Other liabilities and deferred credits
	Total liabilities	$	—	$	—	$	31,656	$	31,656
	The following table summarizes the financial instruments we had as of March 31, 2014, valued at fair value on a recurring basis (in thousands):
		Quoted Prices		Significant		Significant		Balance as of		Balance  Sheet
		in Active		Other		Unobservable		March 31,		Classification
		Markets for		Observable		Inputs		2014
		Identical		Inputs		(Level 3)
		Assets		(Level 2)
		(Level 1)
	Rabbi Trust investments	$	6,599	$	—	$	—	$	6,599	Other assets
	Total assets	$	6,599	$	—	$	—	$	6,599
	Contingent consideration: (1)
	Current	$	—	$	—	$	7,652	$	7,652	Other accrued liabilities
	Long-term	—		—		23,670		23,670		Other liabilities and deferred credits
	Total liabilities	$	—	$	—	$	31,322	$	31,322
Schedule of contingent consideration	'
	The following table provides a rollforward of the contingent consideration liability Level 3 fair value measurements during the six months ended September 30, 2014 (in thousands):
		Significant
		Unobservable
		Inputs (Level 3)
	Balance as of March 31, 2014	$	31,322
	Change in fair value of contingent consideration	334
	Balance as of September 30, 2014	$	31,656
Schedule of fair value of debt	'
	The carrying and fair value of our long-term debt, including the current portion, are as follows (in thousands):
		30-Sep-14				31-Mar-14
		Carrying		Fair Value		Carrying		Fair Value
		Value				Value
	6¼% Senior Notes	$	418,770	$	434,474	$	450,000	$	477,000
	Term Loan	224,396		224,396		226,604		226,604
	3% Convertible Senior Notes	111,971		123,775		109,904		142,382
	Revolving Credit Facility	—		—		24,000		24,000
	Eastern Airways debt	23,855		23,855		29,911		29,911
	Other	542		542		883		883
		$	779,534	$	807,042	$	841,302	$	900,780

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Tables)	6 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Aircraft Purchase Contracts Table	'
	As shown in the table below, we expect to make additional capital expenditures over the next five fiscal years to purchase additional aircraft. As of September 30, 2014, we had 35 aircraft on order and options to acquire an additional 48 aircraft. Although a similar number of our existing aircraft may be sold during the same period, the additional aircraft on order will provide incremental fleet capacity in terms of revenue and operating income. As discussed in the fiscal year 2014 Financial Statements, we were awarded a contract to provide civilian SAR services for all of the U.K. The SAR configured aircraft on order in the table below are intended to service this contract and other SAR contracts.
			Six Months Ending March 31, 2015			Fiscal Year Ending March 31,
						2016			2017				2018		2019 and thereafter		Total
	Commitments as of September 30, 2014: (1)(4)
	Number of aircraft:
	Medium		—			7			—				—		—		7
	Large (2)		2			9			6				—		—		17
	SAR configured		5			6			—				—		—		11
			7			22			6				—		—		35
	Related expenditures (in thousands)(3)(4)
	Medium and large		$	74,420		$	284,874		$	71,606			$	—	$	—	$	430,900
	SAR configured		90,640			99,690			—				—		—		190,330
			$	165,060		$	384,564		$	71,606			$	—	$	—	$	621,230
	Options as of September 30, 2014:
	Number of aircraft:
	Medium		—			4			7				7		—		18
	Large (2)		—			3			12				12		3		30
			—			7			19				19		3		48
	Related expenditures (in thousands)(3)		$	34,458		$	224,754		$	401,642			$	280,152	$	37,966	$	978,972
Rollforward schedule of aircraft purchase orders and options	'
	The following chart presents an analysis of our aircraft orders and options during fiscal year 2015:
				Three Months Ended
				30-Sep-14				30-Jun-14
				Orders		Options		Orders			Options
		Beginning of period		37		51		43			55
		Aircraft delivered		(2	)	—		(9	)		—
		Exercised options		—		—		3			(3	)
		Expired options		—		(3	)	—			(1	)
		End of period		35		48		37			51
Aircraft Lease Table	'
	The following is a summary of the terms related to aircraft leased under operating leases with original or remaining terms in excess of one year as of September 30, 2014:
		End of Lease Term		Number of Aircraft		Monthly Lease Payments
						(in thousands)
		Six months ending March 31, 2015 to fiscal year 2016		4		$	716
		Fiscal year 2017 to fiscal year 2019		28		4,589
		Fiscal year 2020 to fiscal year 2024		43		6,486
				75		$	11,791

EMPLOYEE_BENEFIT_PLANS_Tables

EMPLOYEE BENEFIT PLANS (Tables)	6 Months Ended
	Sep. 30, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
Schedule of components of net periodic pension cost	'
	The following table provides a detail of the components of net periodic pension cost (in thousands):
				Three Months Ended						Six Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		Service cost for benefits earned during the period		$	2,087		$	2,070		$	4,333		$	4,121
		Interest cost on pension benefit obligation		6,437			6,602			13,366			13,140
		Expected return on assets		(7,638		)	(7,171		)	(15,861		)	(14,273		)
		Amortization of unrecognized losses		1,641			1,897			3,409			3,774
		Net periodic pension cost		$	2,527		$	3,398		$	5,247		$	6,762
Schedule of Black Scholes Assumptions	'
	The following table shows the assumptions used to compute the stock-based compensation expense for stock options granted during the six months ended September 30, 2014:
		Risk free interest rate	1.67	%
		Expected life (years)	5
		Volatility	34.2	%
		Dividend yield	1.92	%
		Weighted average exercise price of options granted	$74.52 per option
		Weighted average grant-date fair value of options granted	$17.21 per option

DIVIDENDS_SHARE_REPURCHASES_EA1

DIVIDENDS, SHARE REPURCHASES, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME (TABLES)	6 Months Ended
	Sep. 30, 2014
Dividends, Share Repurchases, Earning Per Share and Accumulated Other Comprehensive Income [Abstract]	'
Schedule of antidilutive securities	'
	Diluted earnings per common share excludes options to purchase shares and restricted stock awards, which were outstanding during the period but were anti-dilutive, as follows:
				Three Months Ended						Six Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		Options:
		Outstanding		298,333			596,191			300,686			497,041
		Weighted average exercise price		$	62.17		$	53.1		$	62.17		$	50.84
		Restricted stock awards:
		Outstanding		2,313			—			1,150			5,611
		Weighted average price		$	72.98		$	—		$	72.98		$	68.31
Schedule Of Earnings Per Share Basic And Diluted [Table Text Block]	'
	The following table sets forth the computation of basic and diluted earnings per share:
			Three Months Ended						Six Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
	Net income available to common stockholders (in thousands):
	Income available to common stockholders – basic		$	26,082		$	110,606		$	70,191		$	137,492
	Interest expense on assumed conversion of 3% Convertible Senior Notes, net of tax (1)		—			—			—			—
	Income available to common stockholders – diluted		$	26,082		$	110,606		$	70,191		$	137,492
	Shares:
	Weighted average number of common shares outstanding – basic		35,447,094			36,403,556			35,495,319			36,265,932
	Assumed conversion of 3% Convertible Senior Notes outstanding during the period (1)		—			—			—			—
	Net effect of dilutive stock options and restricted stock awards based on the treasury stock method		234,398			297,670			301,167			352,492
	Weighted average number of common shares outstanding – diluted		35,681,492			36,701,226			35,796,486			36,618,424
	Basic earnings per common share		$	0.74		$	3.04		$	1.98		$	3.79
	Diluted earnings per common share		$	0.73		$	3.01		$	1.96		$	3.75
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	The following table sets forth the changes in the balances of each component of accumulated other comprehensive income:
			Currency Translation Adjustments			Pension Liability Adjustments (1)			Total
	Balance as of March 31, 2014		$	57,812		$	(214,318	)	$	(156,506	)
	Other comprehensive income before reclassification		(10,482		)	—			(10,482		)
	Reclassified from accumulated other comprehensive income		—			—			—
	Net current period other comprehensive income		(10,482		)	—			(10,482		)
	Foreign exchange rate impact		(5,742		)	5,742			—
	Balance at September 30, 2014		$	41,588		$	(208,576	)	$	(166,988	)

SEGMENT_INFORMATION_Tables

SEGMENT INFORMATION (Tables)	6 Months Ended
	Sep. 30, 2014
Segments [Abstract]	'
Schedule of revenue by segment	'
	The following shows business unit information for the three and six months ended September 30, 2014 and 2013 and as of September 30 and March 31, 2014, where applicable, reconciled to consolidated totals, and prepared on the same basis as our condensed consolidated financial statements (in thousands):
				Three Months Ended								Six Months Ended
				September 30,								September 30,
				2014				2013				2014			2013
		Business unit gross revenue from external clients:
		Europe		$	231,599			$	185,743			$	460,004		$	352,452
		West Africa		82,979				79,488				165,835			158,869
		North America		56,049				60,718				113,691			119,300
		Australia		53,027				40,466				104,630			84,464
		Other International		35,805				32,247				71,331			65,222
		Corporate and other		16,177				18,666				32,683			36,015
		Total business unit gross revenue		$	475,636			$	417,328			$	948,174		$	816,322
		Intra-business unit gross revenue:
		Europe		$	902			$	—			$	1,063		$	—
		West Africa		—				—				—			—
		North America		17				9				17			(7		)
		Australia		—				—				—			—
		Other International		—				—				8			—
		Corporate and other		1,122				1,210				1,893			2,073
		Total intra-business unit gross revenue		$	2,041			$	1,219			$	2,981		$	2,066
		Consolidated gross revenue reconciliation:
		Europe		$	232,501			$	185,743			$	461,067		$	352,452
		West Africa		82,979				79,488				165,835			158,869
		North America		56,066				60,727				113,708			119,293
		Australia		53,027				40,466				104,630			84,464
		Other International		35,805				32,247				71,339			65,222
		Corporate and other		17,299				19,876				34,576			38,088
		Intra-business unit eliminations		(2,041		)		(1,219		)		(2,981		)	(2,066		)
		Total consolidated gross revenue		$	475,636			$	417,328			$	948,174		$	816,322
Schedule Of Earnings From Unconsolidated Affiliates	'
			Three Months Ended						Six Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
	Earnings from unconsolidated affiliates, net of losses – equity method investments:
	Europe		407			873			781			3,913
	North America		(113	)		112			(579	)		104
	Other International		(3,198	)		2,103			1,175			11,043
	Total earnings from unconsolidated affiliates, net of losses – equity method investments		(2,904	)		3,088			1,377			15,060
Schedule of consolidated operating income loss	'
			Three Months Ended							Six Months Ended
			September 30,							September 30,
			2014			2013				2014			2013
	Consolidated operating income (loss) reconciliation:
	Europe		39,581			32,958				79,950			52,979
	West Africa		19,025			18,231				35,687			37,484
	North America		7,923			9,164				20,469			17,287
	Australia		987			2,508				3,240			5,788
	Other International		2,956			8,654				13,358			27,096
	Corporate and other		(26,535	)		(14,516	)			(44,185	)		(25,795	)
	Gain (loss) on disposal of assets		127			(3,064	)			737			(4,785	)
	Total consolidated operating income		44,064			53,935				109,256			110,054
Schedule of depreciation and amortization	'
			Three Months Ended						Six Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
	Depreciation and amortization:
	Europe		10,538			8,206			20,260			15,454
	West Africa		3,538			3,435			7,077			6,695
	North America		6,238			6,057			11,014			12,196
	Australia		4,351			1,908			7,960			3,797
	Other International		3,684			3,586			7,088			7,216
	Corporate and other		(144	)		666			140			1,319
	Total depreciation and amortization		28,205			23,858			53,539			46,677
Schedule of identifiable assets	'
				September 30,				March 31,
				2014				2014
		Identifiable assets:
		Europe		$	819,899			$	932,803
		West Africa		446,969				454,161
		North America		548,644				487,659
		Australia		284,472				260,483
		Other International		551,863				579,571
		Corporate and other		626,550				683,580
		Total identifiable assets (2)		$	3,278,397			$	3,398,257
Schedule of equity method investments	'
				September 30,				March 31,
				2014				2014
		Investments in unconsolidated affiliates – equity method investments:
		Europe		$	1,073			$	1,067
		North America		60,991				61,570
		Other International		192,829				193,692
		Total investments in unconsolidated affiliates – equity method investments		$	254,893			$	256,329

SUPPLEMENTAL_CONDENSED_CONSOLI1

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION (Tables)	6 Months Ended
	Sep. 30, 2014
DisclosureTextBlockAbstract [Abstract]	'
Condensed Income Statement [Table Text Block]	'
	Supplemental Condensed Consolidating Statement of Income
	Three Months Ended September 30, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Revenue:
	Gross revenue	$	—		$	73,715		$	401,921		$	—		$	475,636
	Intercompany revenue	311			25,187			—			(25,498		)	—
		311			98,902			401,921			(25,498		)	475,636
	Operating expense:
	Direct cost and reimbursable expense	—			56,888			281,978			—			338,866
	Intercompany expenses	—			—			25,498			(25,498		)	—
	Depreciation and amortization	1,420			11,886			14,899			—			28,205
	General and administrative	19,841			7,147			34,736			—			61,724
		21,261			75,921			357,111			(25,498		)	428,795
	Gain (loss) on disposal of assets	—			1,200			(1,073		)	—			127
	Earnings from unconsolidated affiliates, net of losses	15,992			—			(2,904		)	(15,992		)	(2,904		)
	Operating income	(4,958		)	24,181			40,833			(15,992		)	44,064
	Interest expense, net	28,492			(960		)	(35,104		)	—			(7,572		)
	Other income (expense), net	(916		)	169			(1,934		)	—			(2,681		)
	Income before provision for income taxes	22,618			23,390			3,795			(15,992		)	33,811
	Allocation of consolidated income taxes	3,473			(994		)	(8,465		)	—			(5,986		)
	Net income	26,091			22,396			(4,670		)	(15,992		)	27,825
	Net income attributable to noncontrolling interests	(9		)	—			(1,734		)	—			(1,743		)
	Net income attributable to Bristow Group	$	26,082		$	22,396		$	(6,404	)	$	(15,992	)	$	26,082
	Supplemental Condensed Consolidating Statement of Income
	Six Months Ended September 30, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Revenue:
	Gross revenue	$	—		$	149,352		$	798,822		$	—		$	948,174
	Intercompany revenue	864			50,013			—			(50,877		)	—
		864			199,365			798,822			(50,877		)	948,174
	Operating expense:
	Direct cost and reimbursable expense	—			109,953			555,384			—			665,337
	Intercompany expenses	—			—			50,877			(50,877		)	—
	Depreciation and amortization	1,278			22,101			30,160			—			53,539
	General and administrative	38,178			17,246			66,732			—			122,156
		39,456			149,300			703,153			(50,877		)	841,032
	Gain (loss) on disposal of assets	—			2,538			(1,801		)	—			737
	Earnings from unconsolidated affiliates, net of losses	52,984			—			1,377			(52,984		)	1,377
	Operating income	14,392			52,603			95,245			(52,984		)	109,256
	Interest expense, net	56,010			(1,966		)	(68,743		)	—			(14,699		)
	Other income (expense), net	(1,844		)	97			(2,173		)	—			(3,920		)
	Income before provision for income taxes	68,558			50,734			24,329			(52,984		)	90,637
	Allocation of consolidated income taxes	1,660			(761		)	(18,708		)	—			(17,809		)
	Net income	70,218			49,973			5,621			(52,984		)	72,828
	Net income attributable to noncontrolling interests	(27		)	—			(2,610		)	—			(2,637		)
	Net income attributable to Bristow Group	$	70,191		$	49,973		$	3,011		$	(52,984	)	$	70,191
	Supplemental Condensed Consolidating Statement of Income
	Three Months Ended September 30, 2013
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Revenue:
	Gross revenue	$	—		$	78,518		$	338,810		$	—		$	417,328
	Intercompany revenue	374			21,506			—			(21,880		)	—
		374			100,024			338,810			(21,880		)	417,328
	Operating expense:
Direct cost and reimbursable expense	—			57,543			235,537			—			293,080
Intercompany expenses	—			—			21,880			(21,880		)	—
Depreciation and amortization	736			11,048			12,074			—			23,858
General and administrative	14,343			8,574			23,562			—			46,479
	15,079			77,165			293,053			(21,880		)	363,417
Loss on disposal of assets	—			(2,927		)	(137		)	—			(3,064		)
Earnings from unconsolidated affiliates, net of losses	138,158			—			3,088			(138,158		)	3,088
Operating income	123,453			19,932			48,708			(138,158		)	53,935
Interest expense, net	21,904			(1,476		)	(28,744		)	—			(8,316		)
Gain on sale of unconsolidated affiliate	—			—			103,924			—			103,924
Other income (expense), net	(120		)	(174		)	1,781			—			1,487
Income before provision for income taxes	145,237			18,282			125,669			(138,158		)	151,030
Allocation of consolidated income taxes	(34,617		)	(1,843		)	(4,686		)	—			(41,146		)
Net income	110,620			16,439			120,983			(138,158		)	109,884
Net (income) loss attributable to noncontrolling interests	(14		)	—			736			—			722
Net income attributable to Bristow Group	$	110,606		$	16,439		$	121,719		$	(138,158	)	$	110,606
Supplemental Condensed Consolidating Statement of Income
Six Months Ended September 30, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Revenue:
Gross revenue	$	—		$	155,161		$	661,161		$	—		$	816,322
Intercompany revenue	748			41,872			—			(42,620		)	—
	748			197,033			661,161			(42,620		)	816,322
Operating expense:
Direct cost and reimbursable expense	—			114,987			470,092			—			585,079
Intercompany expenses	—			—			42,620			(42,620		)	—
Depreciation and amortization	1,453			21,731			23,493			—			46,677
General and administrative	26,133			16,159			44,495			—			86,787
	27,586			152,877			580,700			(42,620		)	718,543
Loss on disposal of assets	—			(1,539		)	(3,246		)	—			(4,785		)
Earnings from unconsolidated affiliates, net of losses	169,908			—			17,060			(169,908		)	17,060
Operating income	143,070			42,617			94,275			(169,908		)	110,054
Interest expense, net	29,505			(1,507		)	(56,565		)	—			(28,567		)
Gain on sale of unconsolidated affiliate	—			—			103,924			—			103,924
Other income (expense), net	(118		)	(160		)	399			—			121
Income before provision for income taxes	172,457			40,950			142,033			(169,908		)	185,532
Allocation of consolidated income taxes	(34,934		)	(2,368		)	(11,434		)	—			(48,736		)
Net income	137,523			38,582			130,599			(169,908		)	136,796
Net (income) loss attributable to noncontrolling interests	(31		)	—			727			—			696
Net income attributable to Bristow Group	$	137,492		$	38,582		$	131,326		$	(169,908	)	$	137,492
Condensed Statement of Comprehensive Income [Table Text Block]	'
	Supplemental Condensed Consolidating Statement of Comprehensive Income
	Three Months Ended September 30, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Net income	$	26,091		$	22,396		$	(4,670	)	$	(15,992	)	$	27,825
	Other comprehensive income:
	Currency translation adjustments	(4,650		)	—			33,613			(48,470		)	(19,507		)
	Total comprehensive income	21,441			22,396			28,943			(64,462		)	8,318
	Net income attributable to noncontrolling interests	(9		)	—			(1,734		)	—			(1,743		)
	Currency translation adjustments attributable to noncontrolling interests	—			—			(183		)	—			(183		)
	Total comprehensive income attributable to noncontrolling interests	(9		)	—			(1,917		)	—			(1,926		)
	Total comprehensive income attributable to Bristow Group	$	21,432		$	22,396		$	27,026		$	(64,462	)	$	6,392
	Supplemental Condensed Consolidating Statement of Comprehensive Income
	Six Months Ended September 30, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Net income	$	70,218		$	49,973		$	5,621		$	(52,984	)	$	72,828
	Other comprehensive income:
	Currency translation adjustments	(11,686		)	—			13,968			(12,798		)	(10,516		)
	Total comprehensive income	58,532			49,973			19,589			(65,782		)	62,312
	Net income attributable to noncontrolling interests	(27		)	—			(2,610		)	—			(2,637		)
	Currency translation adjustments attributable to noncontrolling interests	—			—			34			—			34
	Total comprehensive income attributable to noncontrolling interests	(27		)	—			(2,576		)	—			(2,603		)
	Total comprehensive income attributable to Bristow Group	$	58,505		$	49,973		$	17,013		$	(65,782	)	$	59,709
	Supplemental Condensed Consolidating Statement of Comprehensive Income
	Three Months Ended September 30, 2013
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Net income	$	110,620		$	16,439		$	120,983		$	(138,158	)	$	109,884
	Other comprehensive income:
	Currency translation adjustments	3,105			—			(14,710		)	27,479			15,874
	Total comprehensive income	113,725			16,439			106,273			(110,679		)	125,758
	Net (income) loss attributable to noncontrolling interests	(14		)	—			736			—			722
	Currency translation adjustments attributable to noncontrolling interests	—			—			(108		)	—			(108		)
	Total comprehensive (income) loss attributable to noncontrolling interests	(14		)	—			628			—			614
	Total comprehensive income attributable to Bristow Group	$	113,711		$	16,439		$	106,901		$	(110,679	)	$	126,372
	Supplemental Condensed Consolidating Statement of Comprehensive Income
	Six Months Ended September 30, 2013
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Net income	$	137,523		$	38,582		$	130,599		$	(169,908	)	$	136,796
	Other comprehensive income:
	Currency translation adjustments	4,025			—			(21,657		)	29,077			11,445
	Total comprehensive income	141,548			38,582			108,942			(140,831		)	148,241
	Net (income) loss attributable to noncontrolling interests	(31		)	—			727			—			696
	Currency translation adjustments attributable to noncontrolling interests	—			—			(238		)	—			(238		)
	Total comprehensive (income) loss attributable to noncontrolling interests	(31		)	—			489			—			458
	Total comprehensive income attributable to Bristow Group	$	141,517		$	38,582		$	109,431		$	(140,831	)	$	148,699
Condensed Balance Sheet [Table Text Block]	'
	Supplemental Condensed Consolidating Balance Sheet
	As of September 30, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	54,476		$	13,768		$	195,666		$	—		$	263,910
	Accounts receivable	117,863			165,742			340,259			(328,454		)	295,410
	Inventories	—			43,312			99,502			—			142,814
	Assets held for sale	—			9,898			22,190			—			32,088
	Prepaid expenses and other current assets	3,498			4,683			43,542			—			51,723
	Total current assets	175,837			237,403			701,159			(328,454		)	785,945
	Intercompany investment	1,340,098			111,435			—			(1,451,533		)	—
	Investment in unconsolidated affiliates	—			—			259,262			—			259,262
	Intercompany notes receivable	1,066,847			—			—			(1,066,847		)	—
	Property and equipment—at cost:
	Land and buildings	2,688			49,236			102,078			—			154,002
	Aircraft and equipment	88,051			1,127,606			1,227,561			—			2,443,218
		90,739			1,176,842			1,329,639			—			2,597,220
	Less: Accumulated depreciation and amortization	(14,301		)	(211,745		)	(284,849		)	—			(510,895		)
		76,438			965,097			1,044,790			—			2,086,325
	Goodwill	—			4,755			50,765			—			55,520
	Other assets	172,396			2,627			56,122			(139,800		)	91,345
	Total assets	$	2,831,616		$	1,321,317		$	2,112,098		$	(2,986,634	)	$	3,278,397
	LIABILITIES AND STOCKHOLDERS’ INVESTMENT
	Current liabilities:
	Accounts payable	$	52,973		$	146,863		$	201,656		$	(321,693	)	$	79,799
	Accrued liabilities	29,300			28,447			141,765			(6,943		)	192,569
	Current deferred taxes	(7,961		)	611			19,404			—			12,054
	Short-term borrowings and current maturities of long-term debt	6,815			—			6,854			—			13,669
	Deferred sale leaseback advance	—			137,969			—			—			137,969
	Total current liabilities	81,127			313,890			369,679			(328,636		)	436,060
	Long-term debt, less current maturities	748,322			—			17,543			—			765,865
	Intercompany notes payable	—			132,735			1,074,931			(1,207,666		)	—
	Accrued pension liabilities	—			—			71,815			—			71,815
	Other liabilities and deferred credits	13,478			8,585			34,192			—			56,255
	Deferred taxes	137,896			8,191			20,567			—			166,654
	Temporary equity	—			—			24,264			—			24,264
	Stockholders’ investment:
	Common stock	375			4,996			22,876			(27,872		)	375
	Additional paid-in-capital	769,891			9,291			270,905			(280,196		)	769,891
	Retained earnings	1,292,722			843,629			180,170			(1,023,799		)	1,292,722
	Accumulated other comprehensive income (loss)	(66,405		)	—			17,882			(118,465		)	(166,988		)
	Treasury shares	(147,388		)	—			—			—			(147,388		)
	Total Bristow Group stockholders’ investment	1,849,195			857,916			491,833			(1,450,332		)	1,748,612
	Noncontrolling interests	1,598			—			7,274			—			8,872
	Total stockholders’ investment	1,850,793			857,916			499,107			(1,450,332		)	1,757,484
	Total liabilities and stockholders’ investment	$	2,831,616		$	1,321,317		$	2,112,098		$	(2,986,634	)	$	3,278,397
	Supplemental Condensed Consolidating Balance Sheet
	As of March 31, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	4,640		$	—		$	200,147		$	(446	)	$	204,341
	Accounts receivable	32,280			104,155			310,288			(149,280		)	297,443
	Inventories	—			40,864			96,599			—			137,463
	Assets held for sale	—			8,505			20,771			—			29,276
	Prepaid expenses and other current assets	3,882			3,258			45,944			—			53,084
Total current assets	40,802			156,782			673,749			(149,726		)	721,607
Intercompany investment	1,273,337			111,435			—			(1,384,772		)	—
Investment in unconsolidated affiliates	—			—			262,615			—			262,615
Intercompany notes receivable	1,286,354			—			—			(1,286,354		)	—
Property and equipment—at cost:
Land and buildings	977			49,499			95,497			—			145,973
Aircraft and equipment	64,094			1,357,126			1,224,930			—			2,646,150
	65,071			1,406,625			1,320,427			—			2,792,123
Less: Accumulated depreciation and amortization	(13,057		)	(211,385		)	(298,930		)	—			(523,372		)
	52,014			1,195,240			1,021,497			—			2,268,751
Goodwill	—			4,755			51,925			—			56,680
Other assets	204,679			1,462			50,392			(167,929		)	88,604
Total assets	$	2,857,186		$	1,469,674		$	2,060,178		$	(2,988,781	)	$	3,398,257
LIABILITIES AND STOCKHOLDERS’ INVESTMENT
Current liabilities:
Accounts payable	$	8,298		$	67,728		$	157,297		$	(143,505	)	$	89,818
Accrued liabilities	36,442			32,084			141,423			(5,451		)	204,498
Current deferred taxes	(7,640		)	(1,342		)	21,354			—			12,372
Short-term borrowings and current maturities of long-term debt	4,543			—			9,664			—			14,207
Deferred sale leaseback	—			136,930			—			—			136,930
Total current liabilities	41,643			235,400			329,738			(148,956		)	457,825
Long-term debt, less current maturities	805,965			—			21,130			—			827,095
Intercompany notes payable	—			378,983			1,076,292			(1,455,275		)	—
Accrued pension liabilities	—			—			86,823			—			86,823
Other liabilities and deferred credits	13,750			37,876			26,500			—			78,126
Deferred taxes	144,461			9,472			15,586			—			169,519
Temporary equity	—			—			22,283			—			22,283
Stockholders’ investment:
Common stock	373			4,996			22,876			(27,872		)	373
Additional paid-in-capital	762,813			9,291			270,905			(280,196		)	762,813
Retained earnings	1,245,220			793,656			177,159			(970,815		)	1,245,220
Accumulated other comprehensive income (loss)	(54,719		)	—			3,880			(105,667		)	(156,506		)
Treasury shares	(103,965		)	—			—			—			(103,965		)
Total Bristow Group stockholders’ investment	1,849,722			807,943			474,820			(1,384,550		)	1,747,935
Noncontrolling interests	1,645			—			7,006			—			8,651
Total stockholders’ investment	1,851,367			807,943			481,826			(1,384,550		)	1,756,586
Total liabilities and stockholders’ investment	$	2,857,186		$	1,469,674		$	2,060,178		$	(2,988,781	)	$	3,398,257
Condensed Cash Flow Statement [Table Text Block]	'
	Supplemental Condensed Consolidating Statement of Cash Flows
	Six Months Ended September 30, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Net cash provided by (used in) operating activities	$	(45,192	)	$	115,666		$	30,247		$	446		$	101,167
	Cash flows from investing activities:
	Capital expenditures	(25,668		)	(141,269		)	(135,182		)	—			(302,119		)
	Proceeds from asset dispositions	—			208,373			189,271			—			397,644
	Net cash provided by (used in) investing activities	(25,668		)	67,104			54,089			—			95,525
	Cash flows from financing activities:
	Proceeds from borrowings	218,000			—			1,354			—			219,354
	Repayment of debt	(275,502		)	—			(7,336		)	—			(282,838		)
	Dividends paid	(22,689		)	—			—			—			(22,689		)
	Increases (decreases) in cash related to intercompany advances and debt	241,300			(169,002		)	(72,298		)	—			—
	Partial prepayment of put/call obligation	(30		)	—			—			—			(30		)
	Acquisition of noncontrolling interest	—			—			(3,170		)	—			(3,170		)
	Repurchase of Common Stock	(43,423		)	—			—			—			(43,423		)
	Issuance of Common Stock	1,398			—			—			—			1,398
	Tax benefit related to stock-based compensation	1,642			—			—			—			1,642
	Net cash provided by (used in) financing activities	120,696			(169,002		)	(81,450		)	—			(129,756		)
	Effect of exchange rate changes on cash and cash equivalents	—			—			(7,367		)	—			(7,367		)
	Net increase (decrease) in cash and cash equivalents	49,836			13,768			(4,481		)	446			59,569
	Cash and cash equivalents at beginning of period	4,640			—			200,147			(446		)	204,341
	Cash and cash equivalents at end of period	$	54,476		$	13,768		$	195,666		$	—		$	263,910
	Supplemental Condensed Consolidating Statement of Cash Flows
	Six Months Ended September 30, 2013
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Net cash provided by (used in) operating activities	$	(20,277	)	$	46,258		$	106,495		$	—		$	132,476
	Cash flows from investing activities:
	Capital expenditures	(11,206		)	(275,801		)	(158,415		)	105,863			(339,559		)
	Proceeds from asset dispositions	—			154,689			106,777			(105,863		)	155,603
	Proceeds from sale of unconsolidated affiliate	—			—			112,210			—			112,210
	Net cash provided by (used in) investing activities	(11,206		)	(121,112		)	60,572			—			(71,746		)
	Cash flows from financing activities:
	Proceeds from borrowings	157,500			—			2,646			—			160,146
	Debt issuance costs	(15,152		)	—			—			—			(15,152		)
	Repayment of debt	(114,806		)	—			(2,942		)	—			(117,748		)
	Dividends paid	(15,072		)	34			(3,100		)	—			(18,138		)
	Increases (decreases) in cash related to intercompany advances and debt	(24,615		)	73,818			(49,203		)	—			—
	Partial prepayment of put/call obligation	(27		)	—			—			—			(27		)
	Issuance of Common Stock	11,550			—			—			—			11,550
	Tax benefit related to stock-based compensation	4,234			—			—			—			4,234
	Net cash provided by (used in) financing activities	3,612			73,852			(52,599		)	—			24,865
	Effect of exchange rate changes on cash and cash equivalents	—			—			12,303			—			12,303
	Net increase (decrease) in cash and cash equivalents	(27,871		)	(1,002		)	126,771			—			97,898
	Cash and cash equivalents at beginning of period	31,853			5,370			178,400			—			215,623
	Cash and cash equivalents at end of period	$	3,982		$	4,368		$	305,171		$	—		$	313,521

BASIS_OF_PRESENTATION_CONSOLID3

BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

3 Months Ended

6 Months Ended

10 Months Ended

12 Months Ended

3 Months Ended

6 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2013

Sep. 30, 2013

Jun. 30, 2013

Sep. 30, 2013

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

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Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

USD ($)

USD ($)

GBP (£)

USD ($)

USD ($)

USD ($)

USD ($)

FB Entities [Member]

FB Entities [Member]

FB Entities [Member]

Service Life [Member]

U.K. SAR and Norway Client [Member]

U.K. SAR and Norway Client [Member]

Air Transportation Equipment [Member]

Air Transportation Equipment [Member]

Air Transportation Equipment [Member]

Air Transportation Equipment [Member]

Other Capitalized Property

Other Capitalized Property

Other Capitalized Property

Other Capitalized Property

Medium Aircraft [Member]

Medium Aircraft [Member]

Medium Aircraft [Member]

Medium Aircraft [Member]

Large Aircraft [Member]

Large Aircraft [Member]

Large Aircraft [Member]

Large Aircraft [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One British Pound Sterling Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Euro Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Australian Dollar Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Nigerian Naira Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

One Brazilian Real Into Us Dollars [Member]

Impact of Changes in Foreign Currency Exchange Rates [Member]

Impact of Changes in Foreign Currency Exchange Rates [Member]

aircraft

aircraft

aircraft

aircraft

aircraft

USD ($)

USD ($)

USD ($)

USD ($)

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USD ($)

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USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Weighted Average [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Quarter To Date [Member]

Year To Date [Member]

USD ($)

USD ($)

Quarter To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

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Year To Date [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Foreign Currency [Line Items]

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Foreign currency exchange rates

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1.62

1.62

1.62

1.62

1.72

1.62

1.72

1.62

1.67

1.55

1.68

1.54

1.61

1.48

1.61

1.48

1.26

1.35

1.26

1.35

1.37

1.35

1.39

1.35

1.33

1.32

1.35

1.32

1.26

1.28

1.26

1.26

0.88

0.94

0.88

0.94

0.95

0.95

0.95

1.07

0.93

0.92

0.93

0.95

0.87

0.89

0.87

0.89

0.006

0.0063

0.006

0.0063

0.0062

0.0064

0.0063

0.0065

0.0061

0.0063

0.0062

0.0063

0.006

0.0061

0.006

0.0061

0.4102

0.4475

0.4102

0.4475

0.4534

0.4568

0.4572

0.5123

0.4398

0.438

0.4445

0.4617

0.4066

0.4093

0.4066

0.4093

'

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Foreign Currency Transaction Gain (Loss), before Tax

($1,700,000)

$400,000

'

($2,100,000)

($1,000,000)

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Impact of Foreign Exchange Rates on Unconsolidated affiliates

-6,800,000

-2,100,000

'

-5,900,000

-2,400,000

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Revenues

475,636,000

417,328,000

'

948,174,000

816,322,000

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9,510,000

19,855,000

Operating expense

-428,795,000

-363,417,000

'

-841,032,000

-718,543,000

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-6,027,000

-12,109,000

Earnings from unconsolidated affiliates, net of losses

-2,904,000

3,088,000

'

1,377,000

17,060,000

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-6,620,000

-5,898,000

Non-operating expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-2,112,000

-1,163,000

Income before provision for income taxes

33,811,000

151,030,000

'

90,637,000

185,532,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-5,249,000

685,000

Provision for income taxes

-5,986,000

-41,146,000

'

-17,809,000

-48,736,000

'

'

-36,000,000

-36,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,220,000

-145,000

Net income

27,825,000

109,884,000

'

72,828,000

136,796,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-4,029,000

540,000

Cumulative translation adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-19,690,000

-10,482,000

Total stockholders' investment

1,757,484,000

'

'

1,757,484,000

'

1,757,484,000

1,756,586,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-23,719,000

-9,942,000

Interest Income (Expense), Net [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest income

386,000

762,000

'

622,000

881,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest and Debt Expense

-7,958,000

-9,078,000

'

-15,321,000

-29,448,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense, net

-7,572,000

-8,316,000

'

-14,699,000

-28,567,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Write-off of deferred debt financing fees

'

'

'

437,000

12,733,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300,000

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Repurchase Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

31,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Divestiture of Interest in Subsidiaries and Affiliates [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Method Investment, Ownership Percentage

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from sale of unconsolidated affiliate

'

112,200,000

74,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on sale of unconsolidated affiliate

0

103,924,000

'

0

103,924,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other income (expense)

'

'

'

'

'

'

'

1,100,000

1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

1,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Receivables [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Allowance for doubtful accounts, affiliates

0

'

'

0

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Allowance For Doubtful Accounts Non-Affiliates

500,000

'

'

500,000

'

500,000

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Allowance for Doubtful Accounts Receivable, Recoveries

4,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Allowance for Doubtful Accounts Receivable, Write-offs

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventory Disclosure [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventory allowance

43,000,000

'

'

43,000,000

'

43,000,000

46,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional allowances

3,400,000

1,500,000

'

3,400,000

2,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Set-up Costs, Current

'

'

'

'

'

'

'

'

'

'

'

2,100,000

5,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Contract Acquisition Cost, Non Current

'

'

'

'

'

'

'

'

'

'

'

23,800,000

15,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, Plant and Equipment [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft delivered

2

5

5

11

10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

3

3

5

2

2

8

5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital expenditures

101,672,000

160,027,000

'

302,119,000

339,559,000

'

'

'

'

'

'

'

'

65,386,000

145,653,000

237,484,000

312,880,000

36,286,000

14,374,000

64,635,000

26,679,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments for PP&E

48,000,000

139,400,000

'

211,300,000

301,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment of Long-Lived Assets to be Disposed of

-558,000

-950,000

'

-3,137,000

-2,180,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Impairment of Long-Lived Assets to be Disposed of

2

1

1

6

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, Plant and Equipment, Number of Aircraft Sold

21

11

11

25

15

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from asset dispositions

391,001,000

153,710,000

'

397,644,000

155,603,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) on disposal of assets

127,000

-3,064,000

'

737,000

-4,785,000

'

'

'

'

'

'

'

'

685,000

-2,114,000

3,874,000

-2,605,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft sale leaseback

14

7

7

14

7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale Leaseback Transaction, Gross Proceeds

380,700,000

145,600,000

'

380,700,000

145,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change In Accounting Estimate Effect

'

'

'

'

'

'

'

'

'

'

1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Sale Leaseback Abstract [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred sale leaseback advance total

138,000,000

'

'

138,000,000

'

138,000,000

166,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred sale leaseback advance - current

137,969,000

'

'

137,969,000

'

137,969,000

136,930,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred sale leaseback advance - long-term

0

'

'

0

'

0

29,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Assignment of Aircraft Purchase Agreement

'

'

'

'

'

'

106,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft assigned future payments

'

'

'

5

'

'

7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred sale leaseback progress payments

'

'

'

'

'

102,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Movement Into (Out Of) Deferred Sale Leaseback Advance

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Completion of deferred sale leaseback

'

'

'

73,104,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Removal of Deferred Sale Leaseback Advance

'

'

'

$72,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

VARIABLE_INTEREST_ENTITIES_AND2

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (Details)

3 Months Ended

6 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Mar. 31, 2014

31-May-04

Apr. 30, 2004

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Mar. 31, 2014

Jun. 30, 2013

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Unrelated Local Nigerian Partners [Member]

Nigerian Company owned by 100% Nigerian Employees [Member]

Employee Trust Fund [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Helicopters Nigeria Ltd [Member]

Nigerian Company owned by 100% Nigerian Employees [Member]

Nigerian Company owned by 100% Nigerian Employees [Member]

Pan African Airlines Nigeria Ltd [Member]

Lider Taxi Aereo S.A. [Member]

Lider Taxi Aereo S.A. [Member]

FB Entities [Member]

USD ($)

USD ($)

USD ($)

USD ($)

GBP (£)

USD ($)

GBP (£)

Caledonia Investments Plc [Member]

Director One [Member]

Director Two [Member]

Caledonia Investments Plc [Member]

European Union [Member]

People

Variable Interest Entities And Other Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of variable interest entities

'

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership percentage in Variable Interest Entity

'

'

'

'

'

'

'

'

'

'

'

49.00%

'

'

'

'

'

'

'

'

'

'

40.00%

'

'

50.17%

'

'

'

Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage, Third Party

'

'

'

'

'

'

10.00%

48.00%

2.00%

'

'

51.00%

'

'

'

'

'

'

'

'

46.00%

5.00%

'

'

'

'

'

'

'

Variable Interest Entity, Qualitative or Quantitative Information, Purchased Percentage From Third Party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

29.00%

19.00%

'

'

'

'

Purchase of deferred stock shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition share price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

£ 1

'

'

'

'

'

'

'

'

'

'

'

'

'

Total Amount Paid For Deferred Shares

'

'

'

'

'

'

'

'

'

$14,400,000

'

$14,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount of subordinated unsecured loan stock

'

'

'

'

'

'

'

'

'

147,500,000

'

147,500,000

'

91,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate on unsecured loan

'

'

'

'

'

'

'

'

'

'

'

13.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred interest cost

'

'

'

'

'

'

'

'

'

'

'

1,400,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Voting Rights

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3

1

1

'

'

'

'

'

'

'

'

'

Number of Board Of Directors Nominations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

Call option price held by noncontrolling interest

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Call Option Rate Over LIBOR

'

'

'

'

'

'

'

'

'

3.00%

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Call Option Guaranteed Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Put Option Guaranteed Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

Statement of Financial Position [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

263,910,000

313,521,000

263,910,000

313,521,000

204,341,000

215,623,000

'

'

'

124,037,000

'

124,037,000

'

'

173,490,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accounts Receivable, Net, Current

295,410,000

'

295,410,000

'

297,443,000

'

'

'

'

381,721,000

'

381,721,000

'

'

311,641,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventories

142,814,000

'

142,814,000

'

137,463,000

'

'

'

'

96,551,000

'

96,551,000

'

'

94,288,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepaid expenses and other current assets

51,723,000

'

51,723,000

'

53,084,000

'

'

'

'

77,883,000

'

77,883,000

'

'

45,791,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total current assets

785,945,000

'

785,945,000

'

721,607,000

'

'

'

'

680,192,000

'

680,192,000

'

'

625,210,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment in unconsolidated affiliates

259,262,000

'

259,262,000

'

262,615,000

'

'

'

'

1,321,000

'

1,321,000

'

'

1,414,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, Plant and Equipment, Net

2,086,325,000

'

2,086,325,000

'

2,268,751,000

'

'

'

'

234,041,000

'

234,041,000

'

'

217,969,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

55,520,000

'

55,520,000

'

56,680,000

'

'

'

'

40,055,000

'

40,055,000

'

'

41,218,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other assets

91,345,000

'

91,345,000

'

88,604,000

'

'

'

'

51,840,000

'

51,840,000

'

'

45,477,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total assets

3,278,397,000

'

3,278,397,000

'

3,398,257,000

'

'

'

'

1,007,449,000

'

1,007,449,000

'

'

931,288,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accounts payable

79,799,000

'

79,799,000

'

89,818,000

'

'

'

'

270,915,000

'

270,915,000

'

'

182,892,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued Liabilities

192,569,000

'

192,569,000

'

204,498,000

'

'

'

'

122,404,000

'

122,404,000

'

'

113,820,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued interest

15,459,000

'

15,459,000

'

16,157,000

'

'

'

'

1,390,337,000

'

1,390,337,000

'

'

1,291,581,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current deferred taxes

12,054,000

'

12,054,000

'

12,372,000

'

'

'

'

1,631,000

'

1,631,000

'

'

3,588,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current Maturities of long-term debt

13,669,000

'

13,669,000

'

14,207,000

'

'

'

'

6,854,000

'

6,854,000

'

'

9,664,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total current liabilities

436,060,000

'

436,060,000

'

457,825,000

'

'

'

'

1,792,141,000

'

1,792,141,000

'

'

1,601,545,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total long-term debt

765,865,000

'

765,865,000

'

827,095,000

'

'

'

'

165,072,000

'

165,072,000

'

'

172,391,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued pension liabilities

71,815,000

'

71,815,000

'

86,823,000

'

'

'

'

71,815,000

'

71,815,000

'

'

86,824,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other liabilities and deferred credits

56,255,000

'

56,255,000

'

78,126,000

'

'

'

'

8,714,000

'

8,714,000

'

'

2,252,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred taxes

166,654,000

'

166,654,000

'

169,519,000

'

'

'

'

10,820,000

'

10,820,000

'

'

13,062,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Temporary equity

24,264,000

'

24,264,000

'

22,283,000

'

'

'

'

24,264,000

'

24,264,000

'

'

22,283,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liabilities

'

'

'

'

'

'

'

'

'

2,072,826,000

'

2,072,826,000

'

'

1,898,357,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

475,636,000

417,328,000

948,174,000

816,322,000

'

'

'

'

'

391,615,000

330,006,000

775,432,000

641,807,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating Income (Loss)

'

'

'

'

'

'

'

'

'

7,018,000

18,536,000

23,718,000

27,667,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss)

27,825,000

109,884,000

72,828,000

136,796,000

'

'

'

'

'

-47,767,000

81,236,000

-85,348,000

48,886,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Method Investment, Ownership Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

41.90%

42.50%

50.00%

Gain on sale of unconsolidated affiliate

$0

$103,924,000

$0

$103,924,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

DEBT_Details

DEBT (Details) (USD $)

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

3 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

Oct. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

Oct. 31, 2014

Sep. 30, 2014

Oct. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Senior Notes Due 2022 [Member]

Convertible Senior Notes Due 2038 [Member]

Convertible Senior Notes Due 2038 [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Term Loan [Member]

Term Loan [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Eastern Airways [Member]

Eastern Airways [Member]

Other debt [Member]

Other debt [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Convertible Senior Notes Due 2038 [Member]

Convertible Senior Notes Due 2038 [Member]

Convertible Senior Notes Due 2038 [Member]

Convertible Senior Notes Due 2038 [Member]

Convertible Senior Notes Due 2038 [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total debt

$779,534,000

'

$841,302,000

'

'

'

$418,770,000

$418,770,000

$450,000,000

'

'

'

'

'

'

'

'

'

$111,971,000

'

$111,971,000

'

$109,904,000

$224,396,000

$226,604,000

$0

$24,000,000

$23,855,000

$29,911,000

$542,000

$883,000

Less short-term borrowings and current maturities of long-term debt

-13,669,000

'

-14,207,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total long-term debt

765,865,000

'

827,095,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Repurchase Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

17,200,000

31,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Repurchase premium rate

'

'

'

'

'

'

'

'

'

105.25%

107.75%

104.25%

105.00%

105.00%

103.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total consideration paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,600,000

18,300,000

33,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayment of debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,300,000

'

242,000,000

'

'

'

'

'

Other income (expense)

'

'

'

'

'

'

1,000,000

1,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Write-off of deferred debt financing fees

437,000

12,733,000

'

'

'

'

300,000

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from borrowings

219,354,000

160,146,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

218,000,000

'

'

'

'

'

Letters of Credit Outstanding, Amount

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

6.25%

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

3.00%

'

3.00%

'

'

'

'

'

'

'

'

'

'

Balances Of Debt And Equity Components [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity component- net carrying value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,905,000

'

14,905,000

'

14,905,000

'

'

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

115,000,000

'

115,000,000

'

115,000,000

'

'

'

'

'

'

'

'

Debt component- unamortized discount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-3,029,000

'

-3,029,000

'

-5,096,000

'

'

'

'

'

'

'

'

Long Term Convertible Debt Current And Noncurrent [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Convertible, Effective Interest Rate

'

'

'

'

'

6.90%

'

'

'

'

'

'

'

'

'

'

'

'

6.90%

'

6.90%

'

'

'

'

'

'

'

'

'

'

Contractual coupon interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

863,000

863,000

1,726,000

1,726,000

'

'

'

'

'

'

'

'

'

Amortization of debt discount

2,130,000

1,722,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,048,000

789,000

2,067,000

1,710,000

'

'

'

'

'

'

'

'

'

Total interest expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,911,000

$1,652,000

$3,793,000

$3,436,000

'

'

'

'

'

'

'

'

'

FAIR_VALUE_DISCLOSURES_Details

FAIR VALUE DISCLOSURES (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

aircraft

aircraft

aircraft

aircraft

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Measurements, Nonrecurring [Member]

Cougar [Member]

Cougar [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Term Loan [Member]

Term Loan [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Eastern Airways [Member]

Eastern Airways [Member]

Other debt [Member]

Other debt [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

aircraft

aircraft

aircraft

aircraft

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Convertible Senior Notes Due 2038 [Member]

Convertible Senior Notes Due 2038 [Member]

Fair Value [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventories

$142,814

'

$142,814

'

$137,463

'

'

'

'

'

'

'

'

$19,446

$18,365

$19,446

$18,365

$0

$0

$19,446

$18,365

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Assets held for sale

32,088

'

32,088

'

29,276

'

'

'

'

'

'

'

'

4,650

3,367

4,650

3,367

0

0

4,650

3,367

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total Assets Non Recurring

'

'

'

'

'

'

'

'

'

'

'

'

'

24,096

21,732

24,096

21,732

0

0

24,096

21,732

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment of inventories

-3,362

-1,539

-3,362

-2,364

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment of Long-Lived Assets to be Disposed of

-558

-950

-3,137

-2,180

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) on Sale of Assets and Asset Impairment Charges

-3,920

-2,489

-6,499

-4,544

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Impairment of Long-Lived Assets to be Disposed of

2

1

6

3

'

'

'

'

'

'

'

'

'

2

1

6

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rabbi Trust investments

'

'

'

'

'

5,413

6,599

5,413

6,599

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total Assets Recurring

'

'

'

'

'

5,413

6,599

5,413

6,599

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other accrued liabilities

45,816

'

45,816

'

45,853

7,770

7,652

0

0

0

0

7,770

7,652

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other liabilities and deferred credits

56,255

'

56,255

'

78,126

23,886

23,670

0

0

0

0

23,886

23,670

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total Liabilities Recurring

'

'

'

'

'

31,656

31,322

0

0

0

0

31,656

31,322

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingent Consideration- beginning balance

'

'

31,322

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in fair value of contingent consideration

'

'

334

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingent Consideration- ending balance

31,656

'

31,656

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value Inputs, Discount Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

Carrying value of total debt

779,534

'

779,534

'

841,302

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

418,770

450,000

111,971

109,904

224,396

226,604

0

24,000

23,855

29,911

542

883

Fair value of total debt

$807,042

'

$807,042

'

$900,780

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$434,474

$477,000

$123,775

$142,382

$224,396

$226,604

$0

$24,000

$23,855

$29,911

$542

$883

COMMITMENTS_AND_CONTINGENCIES_1

COMMITMENTS AND CONTINGENCIES (Details) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Feb. 20, 2014

Oct. 22, 2012

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Jun. 30, 2014

Sep. 30, 2014

Jun. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

aircraft

aircraft

Agreements

aircraft

aircraft

Recommendation

Passenger

Maximum [Member]

Minimum [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

Unionized Employees Concentration Risk [Member]

Medium Aircraft [Member]

Medium Aircraft [Member]

Medium Aircraft [Member]

Medium Aircraft [Member]

Large Aircraft [Member]

Large Aircraft [Member]

Large Aircraft [Member]

Large Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

EC225 Aircraft [Member]

Commitments [Member]

Commitments [Member]

Options [Member]

Options [Member]

Other Commitments [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Remainder of FY2015 to FY2016 [Member]

FY2017 to FY2019 [Member]

FY2020 to FY2024 [Member]

Agreements

aircraft

Months

Months

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

aircraft

Medium Aircraft [Member]

Large Aircraft [Member]

Medium and Large [Member]

SAR Configured [Member]

aircraft

aircraft

aircraft

Facility

Facility

aircraft

aircraft

aircraft

Commitments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft purchase commitments, due remainder of fiscal year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7

0

2

'

5

'

'

'

Number of aircraft purchase commitments, due in two years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22

7

9

'

6

'

'

'

Number of aircraft purchase commitments, due in three years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6

0

6

'

0

'

'

'

Number of aircraft purchase commitments, due in four years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

'

0

'

'

'

Number of aircraft purchase commitments, due in five years and after

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

'

0

'

'

'

Number of aircraft purchase commitments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35

7

17

'

11

'

'

'

Purchase commitments, due remainder of year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$165,060,000

'

'

$74,420,000

$90,640,000

'

'

'

Purchase commitments, Due within Two Years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

384,564,000

'

'

284,874,000

99,690,000

'

'

'

Purchase commitments, Due within Three Years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

71,606,000

'

'

71,606,000

0

'

'

'

Purchase commitments, Due within Four Years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

0

0

'

'

'

Purchase commitments, Due within Five Years And After

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

0

0

'

'

'

Purchase commitments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

93,400,000

621,230,000

'

'

430,900,000

190,330,000

'

'

'

Options [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft purchase options, due remainder of fiscal year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

'

'

'

'

'

Number of aircraft purchase options, due in two years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7

4

3

'

'

'

'

'

Number of aircraft purchase options, due in three years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19

7

12

'

'

'

'

'

Number of aircraft purchase options, due in four years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19

7

12

'

'

'

'

'

Number of aircraft purchase options, due in five years and after

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3

0

3

'

'

'

'

'

Number of aircraft purchase options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

48

18

30

'

'

'

'

'

Aircraft purchase options, due remainder of year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

34,458,000

'

'

'

'

'

'

'

Aircraft purchase options, due in two years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

224,754,000

'

'

'

'

'

'

'

Aircraft purchase options, due in three years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

401,642,000

'

'

'

'

'

'

'

Aircraft purchase options, due in four years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

280,152,000

'

'

'

'

'

'

'

Aircraft purchase options, due in five years and after

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

37,966,000

'

'

'

'

'

'

'

Aircraft purchase options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

978,972,000

'

'

'

'

'

'

'

Number of signed client contracts

15

'

15

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of contingent aircraft

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

'

7

'

'

'

'

'

'

'

'

'

'

Analysis Of Aircraft Orders And Options [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning of quarter

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

37

43

51

55

'

'

'

'

'

'

'

'

'

Aircraft Delivered

-2

-5

-11

-10

'

'

'

'

'

'

'

'

'

'

0

-3

-3

-5

-2

-2

-8

-5

'

'

'

'

'

-2

-9

0

0

'

'

'

'

'

'

'

'

'

Exercised options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

3

0

-3

'

'

'

'

'

'

'

'

'

Expired Options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

-3

-1

'

'

'

'

'

'

'

'

'

End of quarter

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35

37

48

51

'

'

'

'

'

'

'

'

'

Operating leases rental expense

35,400,000

23,300,000

68,600,000

46,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

28,500,000

18,000,000

54,900,000

36,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft sale leaseback

14

7

14

7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale Leaseback Transaction, Gross Proceeds

380,700,000

145,600,000

380,700,000

145,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of agreements to lease back aircraft

14

'

14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Lease term of the aircraft

'

'

'The aircraft leases range from base terms of 24 to 84 months with renewal options of up to 240 months in some cases, include purchase options upon expiration and some include early purchase options.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale Leaseback Transaction, Lease Terms, Number of Months

'

'

'

'

'

'

'

84

24

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale Leaseback Transaction, Lease Terms, Number of Months, Renewal Option

'

'

'

'

'

'

'

240

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Monthly Rent payment

'

'

11,791,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

716,000

4,589,000

6,486,000

Number of leased aircraft

75

'

75

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11

'

'

'

'

'

'

'

'

'

'

4

28

43

Concentration Risk, Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

47.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collective Bargaining Agreements, Maximum Annual Escalation Per Employee, Percent

8.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Work force reductions costs

'

'

'

'

'

'

'

'

'

300,000

300,000

900,000

300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of passengers and crew on board from aircraft ditching, third party

'

'

'

'

'

'

19

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Site Contingency, Number of Locations

3

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft suspend operations

'

'

'

'

16

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Aircraft Operated

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Aircrafts Owned

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12

'

'

'

'

'

'

'

'

'

'

'

'

'

Total Number Of Safety Recommendations, CAP 1145

'

'

'

'

'

60

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Recommendations To Improve Survivability, CAP 1145

'

'

'

'

'

10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss Contingency, Range of Possible Loss, Minimum

5,000,000

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss Contingency, Range of Possible Loss, Maximum

$8,000,000

'

$8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

TAXES_Details

TAXES (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Examination [Line Items]	'	'	'	'
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate	17.70%	27.20%	19.60%	26.30%
Income Tax Expense (Benefit)	$5,986,000	$41,146,000	$17,809,000	$48,736,000
Effective Tax Rate Excluding Special Items	'	15.40%	'	18.20%
Unrecognized Tax Benefits	4,300,000	'	4,300,000	'
FB Entities [Member]	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Income Tax Expense (Benefit)	'	36,000,000	'	36,000,000
Eastern Airways [Member]	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Ownership percentage in Variable Interest Entity	'	'	60.00%	'
Tax indemnity asset	4,200,000	'	4,200,000	'
UNITED KINGDOM	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Income Tax Expense (Benefit)	'	($2,100,000)	'	($2,100,000)

EMPLOYEE_BENEFIT_PLANS_Details

EMPLOYEE BENEFIT PLANS (Details)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2015

Sep. 30, 2014

Mar. 31, 2015

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Plan 2007 [Member]

UK staff pension plan [Member]

UK staff pension plan [Member]

Norway pension plan [Member]

Norway pension plan [Member]

UK Pension Plans [Member]

UK Pension Plans [Member]

USD ($)

USD ($)

USD ($)

GBP (£)

USD ($)

Scenario, Forecast [Member]

USD ($)

Scenario, Forecast [Member]

USD ($)

USD ($)

Pension Plan [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service cost

$2,087,000

$2,070,000

$4,333,000

$4,121,000

'

'

'

'

'

'

'

'

'

'

Interest cost

6,437,000

6,602,000

13,366,000

13,140,000

'

'

'

'

'

'

'

'

'

'

Expected return on assets

-7,638,000

-7,171,000

-15,861,000

-14,273,000

'

'

'

'

'

'

'

'

'

'

Amortization of unrecognized losses

1,641,000

1,897,000

3,409,000

3,774,000

'

'

'

'

'

'

'

'

'

'

Net periodic pension cost

2,527,000

3,398,000

5,247,000

6,762,000

'

'

'

'

'

'

'

'

'

'

Cash Contributions

'

'

'

'

'

'

'

'

20,800,000

12,500,000

6,000,000

'

10,200,000

'

Estimated cash contributions

'

'

'

'

'

'

'

'

'

'

'

7,900,000

'

21,200,000

Incentive Compensation [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock Shares reserved

'

'

'

'

'

'

'

5,400,000

'

'

'

'

'

'

Common stock, par value

$0.01

'

$0.01

'

$0.01

'

'

'

'

'

'

'

'

'

Shares available for grant

'

'

'

'

'

'

'

2,352,001

'

'

'

'

'

'

Stock based compensation expense

4,200,000

3,700,000

8,407,000

6,625,000

'

'

'

'

'

'

'

'

'

'

Stock option grants- shares

27,291

'

472,744

'

'

'

'

'

'

'

'

'

'

'

Restricted stock grants- shares

19,884

'

172,808

'

'

'

'

'

'

'

'

'

'

'

Restricted stock grants- fair value

$71.90

'

$74.18

'

'

'

'

'

'

'

'

'

'

'

Risk free interest rate

'

'

1.67%

'

'

'

'

'

'

'

'

'

'

'

Expected life (years)

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

Volatility

'

'

34.20%

'

'

'

'

'

'

'

'

'

'

'

Dividend yield

'

'

1.92%

'

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price of options granted

'

'

$74.52

'

'

'

'

'

'

'

'

'

'

'

Weighted average grant-date fair value of options granted

'

'

$17.21

'

'

'

'

'

'

'

'

'

'

'

Performance cash compensation liability

13,300,000

'

13,300,000

'

16,700,000

'

'

'

'

'

'

'

'

'

Performance cash compensation expense

2,500,000

1,900,000

4,600,000

3,700,000

'

'

'

'

'

'

'

'

'

'

Lump Sum Cash Payment

'

'

'

'

'

3,800,000

3,800,000

'

'

'

'

'

'

'

Compensation

'

'

'

'

'

$1,800,000

$5,500,000

'

'

'

'

'

'

'

DIVIDENDS_SHARE_REPURCHASES_EA2

DIVIDENDS, SHARE REPURCHASES, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

1 Months Ended

3 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Oct. 31, 2014

Dec. 31, 2014

Nov. 06, 2014

Nov. 05, 2014

Accumulated Translation Adjustment [Member]

Accumulated Defined Benefit Plans Adjustment [Member]

Base Conversion [Member]

Excess Conversion [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Quarter To Date [Member]

Quarter To Date [Member]

Year To Date [Member]

Year To Date [Member]

Dividends, Share Repurchases and Earnings Per Share [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash dividends declared per common share

$0.32

$0.25

$0.64

$0.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.32

'

'

Payments for repurchase of common stock

$23,300,000

'

$43,423,000

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$10,000,000

'

'

'

Treasury Stock, Shares, Acquired

324,720

'

595,318

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

146,900

'

'

'

Stock Repurchase Program, Remaining Authorized Repurchase Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,400,000

'

'

'

Stock Repurchase Program, Authorized Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

150,000,000

133,400,000

Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding

'

'

'

'

'

'

'

'

298,333

596,191

300,686

497,041

'

'

'

'

2,313

0

1,150

5,611

'

'

'

'

'

'

'

'

Weighted average exercise price

'

'

'

'

'

'

'

'

'

'

'

'

$62.17

$53.10

$62.17

$50.84

'

'

'

'

$72.98

$0

$72.98

$68.31

'

'

'

'

Income available to common stockholders - basic

26,082,000

110,606,000

70,191,000

137,492,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense on assumed conversion of 3% Convertible Notes, net of tax

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income available to common stockholders - diluted

26,082,000

110,606,000

70,191,000

137,492,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average number of common shares outstanding - basic

35,447,094

36,403,556

35,495,319

36,265,932

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Assumed conversion of 3% Convertible Senior Noted outstanding during the period

0

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net effect of dilutive stock options, restricted stock units and restricted stock awards based on the treasury stock method

234,398

297,670

301,167

352,492

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average number of common shares outstanding - diluted

35,681,492

36,701,226

35,796,486

36,618,424

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basic earnings per share

$0.74

$3.04

$1.98

$3.79

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Diluted earnings per share

$0.73

$3.01

$1.96

$3.75

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument Convertible Terms Of Conversion Feature

'the base conversion price of the notes was approximately $74.05, based on the base conversion rate of 13.5048 shares of Common Stock per $1,000 principal amount of convertible notes (subject to adjustment in certain circumstances, including the payment of dividends). In general, upon conversion of a note, the holder will receive cash equal to the principal amount of the note and Common Stock to the extent of the notebs conversion value in excess of such principal amount. In addition, if at the time of conversion the applicable price of our Common Stock exceeds the base conversion price, holders will receive up to an additional 8.7781 shares of our Common Stock per $1,000 principal amount of notes, as determined pursuant to a specified formula.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Convertible, Conversion Price

$74.05

'

$74.05

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Convertible, Conversion Ratio

'

'

'

'

'

'

13.5048

8.7781

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Per Principal Amount Of Convertible Debt

'

'

1,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss) - Beginning Balance

'

'

-156,506,000

'

57,812,000

-214,318,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Comprehensive Income (Loss), before Reclassifications, Net of Tax

'

'

-10,482,000

'

-10,482,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax

'

'

0

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Comprehensive Income (Loss), Net of Tax

'

'

-10,482,000

'

-10,482,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax

0

'

0

'

-5,742,000

5,742,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss) - Ending Balance

($166,988,000)

'

($166,988,000)

'

$41,588,000

($208,576,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

SEGMENT_INFORMATION_Details

SEGMENT INFORMATION (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Jun. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

FB Entities [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Corporate And Other [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

Europe [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

West Africa [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

North America [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Australia [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Other International [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

Intersegment Eliminations [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

External Customer [Member]

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total consolidated gross revenue

$475,636,000

$417,328,000

$948,174,000

$816,322,000

'

'

$2,041,000

$1,219,000

$2,981,000

$2,066,000

$475,636,000

$417,328,000

$948,174,000

$816,322,000

$17,299,000

$19,876,000

$34,576,000

$38,088,000

'

$1,122,000

$1,210,000

$1,893,000

$2,073,000

$16,177,000

$18,666,000

$32,683,000

$36,015,000

$232,501,000

$185,743,000

$461,067,000

$352,452,000

'

$902,000

$0

$1,063,000

$0

$231,599,000

$185,743,000

$460,004,000

$352,452,000

$82,979,000

$79,488,000

$165,835,000

$158,869,000

'

$0

$0

$0

$0

$82,979,000

$79,488,000

$165,835,000

$158,869,000

$56,066,000

$60,727,000

$113,708,000

$119,293,000

'

$17,000

$9,000

$17,000

($7,000)

$56,049,000

$60,718,000

$113,691,000

$119,300,000

$53,027,000

$40,466,000

$104,630,000

$84,464,000

'

$0

$0

$0

$0

$53,027,000

$40,466,000

$104,630,000

$84,464,000

$35,805,000

$32,247,000

$71,339,000

$65,222,000

'

$0

$0

$8,000

$0

$35,805,000

$32,247,000

$71,331,000

$65,222,000

Total earnings from unconsolidated affiliates, net of losses - equity method investments

-2,904,000

3,088,000

1,377,000

15,060,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

407,000

873,000

781,000

3,913,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-113,000

112,000

-579,000

104,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-3,198,000

2,103,000

1,175,000

11,043,000

'

'

'

'

'

'

'

'

'

Total business unit operating income

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-26,535,000

-14,516,000

-44,185,000

-25,795,000

'

'

'

'

'

'

'

'

'

39,581,000

32,958,000

79,950,000

52,979,000

'

'

'

'

'

'

'

'

'

19,025,000

18,231,000

35,687,000

37,484,000

'

'

'

'

'

'

'

'

'

7,923,000

9,164,000

20,469,000

17,287,000

'

'

'

'

'

'

'

'

'

987,000

2,508,000

3,240,000

5,788,000

'

'

'

'

'

'

'

'

'

2,956,000

8,654,000

13,358,000

27,096,000

'

'

'

'

'

'

'

'

'

Gain (loss) on disposal of assets

127,000

-3,064,000

737,000

-4,785,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total consolidated operating income

44,064,000

53,935,000

109,256,000

110,054,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total depreciation and amortization

28,205,000

23,858,000

53,539,000

46,677,000

'

'

'

'

'

'

'

'

'

'

-144,000

666,000

140,000

1,319,000

'

'

'

'

'

'

'

'

'

10,538,000

8,206,000

20,260,000

15,454,000

'

'

'

'

'

'

'

'

'

3,538,000

3,435,000

7,077,000

6,695,000

'

'

'

'

'

'

'

'

'

6,238,000

6,057,000

11,014,000

12,196,000

'

'

'

'

'

'

'

'

'

4,351,000

1,908,000

7,960,000

3,797,000

'

'

'

'

'

'

'

'

'

3,684,000

3,586,000

7,088,000

7,216,000

'

'

'

'

'

'

'

'

'

Total identifiable assets

3,278,397,000

'

3,278,397,000

'

3,398,257,000

'

'

'

'

'

'

'

'

'

626,550,000

'

626,550,000

'

683,580,000

'

'

'

'

'

'

'

'

819,899,000

'

819,899,000

'

932,803,000

'

'

'

'

'

'

'

'

446,969,000

'

446,969,000

'

454,161,000

'

'

'

'

'

'

'

'

548,644,000

'

548,644,000

'

487,659,000

'

'

'

'

'

'

'

'

284,472,000

'

284,472,000

'

260,483,000

'

'

'

'

'

'

'

'

551,863,000

'

551,863,000

'

579,571,000

'

'

'

'

'

'

'

'

Total investments in unconsolidated affiliates - equity method

254,893,000

'

254,893,000

'

256,329,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,073,000

'

1,073,000

'

1,067,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60,991,000

'

60,991,000

'

61,570,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

192,829,000

'

192,829,000

'

193,692,000

'

'

'

'

'

'

'

'

Equity Method Investment, Ownership Percentage

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

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'

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'

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'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Construction in progress within property and equipment

$419,900,000

'

$419,900,000

'

$477,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

SUPPLEMENTAL_CONDENSED_CONSOLI2

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION IS (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	$475,636,000	$417,328,000	$948,174,000	$816,322,000
Direct cost and reimbursable expense	338,866,000	293,080,000	665,337,000	585,079,000
Intercompany expenses	0	0	0	0
Depreciation and amortization	28,205,000	23,858,000	53,539,000	46,677,000
General and administrative	61,724,000	46,479,000	122,156,000	86,787,000
Operating expense	428,795,000	363,417,000	841,032,000	718,543,000
Gain (loss) on disposal of assets	127,000	-3,064,000	737,000	-4,785,000
Earnings from unconsolidated affiliates, net of losses	-2,904,000	3,088,000	1,377,000	17,060,000
Operating income	44,064,000	53,935,000	109,256,000	110,054,000
Interest expense, net	-7,572,000	-8,316,000	-14,699,000	-28,567,000
Gain on sale of unconsolidated affiliate	0	103,924,000	0	103,924,000
Other income (expense), net	-2,681,000	1,487,000	-3,920,000	121,000
Income before provision for income taxes	33,811,000	151,030,000	90,637,000	185,532,000
Provision for income taxes	-5,986,000	-41,146,000	-17,809,000	-48,736,000
Net income	27,825,000	109,884,000	72,828,000	136,796,000
Net income attributable to noncontrolling interests	-1,743,000	722,000	-2,637,000	696,000
Net income attributable to Bristow Group	26,082,000	110,606,000	70,191,000	137,492,000
External Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	475,636,000	417,328,000	948,174,000	816,322,000
Intercompany Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	0	0	0	0
Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	311,000	374,000	864,000	748,000
Direct cost and reimbursable expense	0	0	0	0
Intercompany expenses	0	0	0	0
Depreciation and amortization	1,420,000	736,000	1,278,000	1,453,000
General and administrative	19,841,000	14,343,000	38,178,000	26,133,000
Operating expense	21,261,000	15,079,000	39,456,000	27,586,000
Gain (loss) on disposal of assets	0	0	0	0
Earnings from unconsolidated affiliates, net of losses	15,992,000	138,158,000	52,984,000	169,908,000
Operating income	-4,958,000	123,453,000	14,392,000	143,070,000
Interest expense, net	28,492,000	21,904,000	56,010,000	29,505,000
Gain on sale of unconsolidated affiliate	'	0	'	0
Other income (expense), net	-916,000	-120,000	-1,844,000	-118,000
Income before provision for income taxes	22,618,000	145,237,000	68,558,000	172,457,000
Provision for income taxes	3,473,000	-34,617,000	1,660,000	-34,934,000
Net income	26,091,000	110,620,000	70,218,000	137,523,000
Net income attributable to noncontrolling interests	-9,000	-14,000	-27,000	-31,000
Net income attributable to Bristow Group	26,082,000	110,606,000	70,191,000	137,492,000
Parent Company [Member] | External Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	0	0	0	0
Parent Company [Member] | Intercompany Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	311,000	374,000	864,000	748,000
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	98,902,000	100,024,000	199,365,000	197,033,000
Direct cost and reimbursable expense	56,888,000	57,543,000	109,953,000	114,987,000
Intercompany expenses	0	0	0	0
Depreciation and amortization	11,886,000	11,048,000	22,101,000	21,731,000
General and administrative	7,147,000	8,574,000	17,246,000	16,159,000
Operating expense	75,921,000	77,165,000	149,300,000	152,877,000
Gain (loss) on disposal of assets	1,200,000	-2,927,000	2,538,000	-1,539,000
Earnings from unconsolidated affiliates, net of losses	0	0	0	0
Operating income	24,181,000	19,932,000	52,603,000	42,617,000
Interest expense, net	-960,000	-1,476,000	-1,966,000	-1,507,000
Gain on sale of unconsolidated affiliate	'	0	'	0
Other income (expense), net	169,000	-174,000	97,000	-160,000
Income before provision for income taxes	23,390,000	18,282,000	50,734,000	40,950,000
Provision for income taxes	-994,000	-1,843,000	-761,000	-2,368,000
Net income	22,396,000	16,439,000	49,973,000	38,582,000
Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to Bristow Group	22,396,000	16,439,000	49,973,000	38,582,000
Guarantor Subsidiaries [Member] | External Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	73,715,000	78,518,000	149,352,000	155,161,000
Guarantor Subsidiaries [Member] | Intercompany Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	25,187,000	21,506,000	50,013,000	41,872,000
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	401,921,000	338,810,000	798,822,000	661,161,000
Direct cost and reimbursable expense	281,978,000	235,537,000	555,384,000	470,092,000
Intercompany expenses	25,498,000	21,880,000	50,877,000	42,620,000
Depreciation and amortization	14,899,000	12,074,000	30,160,000	23,493,000
General and administrative	34,736,000	23,562,000	66,732,000	44,495,000
Operating expense	357,111,000	293,053,000	703,153,000	580,700,000
Gain (loss) on disposal of assets	-1,073,000	-137,000	-1,801,000	-3,246,000
Earnings from unconsolidated affiliates, net of losses	-2,904,000	3,088,000	1,377,000	17,060,000
Operating income	40,833,000	48,708,000	95,245,000	94,275,000
Interest expense, net	-35,104,000	-28,744,000	-68,743,000	-56,565,000
Gain on sale of unconsolidated affiliate	'	103,924,000	'	103,924,000
Other income (expense), net	-1,934,000	1,781,000	-2,173,000	399,000
Income before provision for income taxes	3,795,000	125,669,000	24,329,000	142,033,000
Provision for income taxes	-8,465,000	-4,686,000	-18,708,000	-11,434,000
Net income	-4,670,000	120,983,000	5,621,000	130,599,000
Net income attributable to noncontrolling interests	-1,734,000	736,000	-2,610,000	727,000
Net income attributable to Bristow Group	-6,404,000	121,719,000	3,011,000	131,326,000
Non-Guarantor Subsidiaries [Member] | External Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	401,921,000	338,810,000	798,822,000	661,161,000
Non-Guarantor Subsidiaries [Member] | Intercompany Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	0	0	0	0
Consolidations, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	-25,498,000	-21,880,000	-50,877,000	-42,620,000
Direct cost and reimbursable expense	0	0	0	0
Intercompany expenses	-25,498,000	-21,880,000	-50,877,000	-42,620,000
Depreciation and amortization	0	0	0	0
General and administrative	0	0	0	0
Operating expense	-25,498,000	-21,880,000	-50,877,000	-42,620,000
Gain (loss) on disposal of assets	0	0	0	0
Earnings from unconsolidated affiliates, net of losses	-15,992,000	-138,158,000	-52,984,000	-169,908,000
Operating income	-15,992,000	-138,158,000	-52,984,000	-169,908,000
Interest expense, net	0	0	0	0
Gain on sale of unconsolidated affiliate	'	0	'	0
Other income (expense), net	0	0	0	0
Income before provision for income taxes	-15,992,000	-138,158,000	-52,984,000	-169,908,000
Provision for income taxes	0	0	0	0
Net income	-15,992,000	-138,158,000	-52,984,000	-169,908,000
Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to Bristow Group	-15,992,000	-138,158,000	-52,984,000	-169,908,000
Consolidations, Eliminations [Member] | External Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	0	0	0	0
Consolidations, Eliminations [Member] | Intercompany Customer [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total consolidated gross revenue	($25,498,000)	($21,880,000)	($50,877,000)	($42,620,000)

SUPPLEMENTAL_CONDENSED_CONSOLI3

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION OCI (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income	$27,825	$109,884	$72,828	$136,796
Currency translation adjustments	-19,507	15,874	-10,516	11,445
Other comprehensive income	8,318	125,758	62,312	148,241
Net (income) loss attributable to noncontrolling interests	-1,743	722	-2,637	696
Currency translation adjustment attributable to noncontrolling interest	-183	-108	34	-238
Total comprehensive (income) loss attributable to noncontrolling interests	-1,926	614	-2,603	458
Total comprehensive income attributable to Bristow Group	6,392	126,372	59,709	148,699
Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income	26,091	110,620	70,218	137,523
Currency translation adjustments	-4,650	3,105	-11,686	4,025
Other comprehensive income	21,441	113,725	58,532	141,548
Net (income) loss attributable to noncontrolling interests	-9	-14	-27	-31
Currency translation adjustment attributable to noncontrolling interest	0	0	0	0
Total comprehensive (income) loss attributable to noncontrolling interests	-9	-14	-27	-31
Total comprehensive income attributable to Bristow Group	21,432	113,711	58,505	141,517
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income	22,396	16,439	49,973	38,582
Currency translation adjustments	0	0	0	0
Other comprehensive income	22,396	16,439	49,973	38,582
Net (income) loss attributable to noncontrolling interests	0	0	0	0
Currency translation adjustment attributable to noncontrolling interest	0	0	0	0
Total comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Total comprehensive income attributable to Bristow Group	22,396	16,439	49,973	38,582
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income	-4,670	120,983	5,621	130,599
Currency translation adjustments	33,613	-14,710	13,968	-21,657
Other comprehensive income	28,943	106,273	19,589	108,942
Net (income) loss attributable to noncontrolling interests	-1,734	736	-2,610	727
Currency translation adjustment attributable to noncontrolling interest	-183	-108	34	-238
Total comprehensive (income) loss attributable to noncontrolling interests	-1,917	628	-2,576	489
Total comprehensive income attributable to Bristow Group	27,026	106,901	17,013	109,431
Consolidations, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income	-15,992	-138,158	-52,984	-169,908
Currency translation adjustments	-48,470	27,479	-12,798	29,077
Other comprehensive income	-64,462	-110,679	-65,782	-140,831
Net (income) loss attributable to noncontrolling interests	0	0	0	0
Currency translation adjustment attributable to noncontrolling interest	0	0	0	0
Total comprehensive (income) loss attributable to noncontrolling interests	0	0	0	0
Total comprehensive income attributable to Bristow Group	($64,462)	($110,679)	($65,782)	($140,831)

SUPPLEMENTAL_CONDENSED_CONSOLI4

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION BS (Details) (USD $)	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	$263,910	$204,341	$313,521	$215,623
Accounts Receivable, Net, Current	295,410	297,443	'	'
Inventories	142,814	137,463	'	'
Assets held for sale	32,088	29,276	'	'
Prepaid expenses and other current assets	51,723	53,084	'	'
Total current assets	785,945	721,607	'	'
Intercompany investment	0	0	'	'
Investment in unconsolidated affiliates	259,262	262,615	'	'
Intercompany notes receivable	0	0	'	'
Total property and equipment, at cost	2,597,220	2,792,123	'	'
Less - Accumulated depreciation and amortization	-510,895	-523,372	'	'
Property, Plant and Equipment, Net	2,086,325	2,268,751	'	'
Goodwill	55,520	56,680	'	'
Other assets	91,345	88,604	'	'
Total assets	3,278,397	3,398,257	'	'
Accounts payable	79,799	89,818	'	'
Accrued Liabilities	192,569	204,498	'	'
Current deferred taxes	12,054	12,372	'	'
Short-term borrowings and current maturities of long-term debt	13,669	14,207	'	'
Deferred sale leaseback advance	137,969	136,930	'	'
Total current liabilities	436,060	457,825	'	'
Long-term debt, less current maturities	765,865	827,095	'	'
Intercompany notes payable	0	0	'	'
Accrued pension liabilities	71,815	86,823	'	'
Other liabilities and deferred credits	56,255	78,126	'	'
Deferred taxes	166,654	169,519	'	'
Temporary equity	24,264	22,283	'	'
Common stock	375	373	'	'
Additional paid-in capital	769,891	762,813	'	'
Retained earnings	1,292,722	1,245,220	'	'
Accumulated other comprehensive income (loss)	-166,988	-156,506	'	'
Treasury shares	-147,388	-103,965	'	'
Stockholders' equity	1,748,612	1,747,935	'	'
Noncontrolling interests	8,872	8,651	'	'
Total stockholders' investment	1,757,484	1,756,586	'	'
Total liabilities and stockholders' investment	3,278,397	3,398,257	'	'
Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	54,476	4,640	3,982	31,853
Accounts Receivable, Net, Current	117,863	32,280	'	'
Inventories	0	0	'	'
Assets held for sale	0	0	'	'
Prepaid expenses and other current assets	3,498	3,882	'	'
Total current assets	175,837	40,802	'	'
Intercompany investment	1,340,098	1,273,337	'	'
Investment in unconsolidated affiliates	0	0	'	'
Intercompany notes receivable	1,066,847	1,286,354	'	'
Total property and equipment, at cost	90,739	65,071	'	'
Less - Accumulated depreciation and amortization	-14,301	-13,057	'	'
Property, Plant and Equipment, Net	76,438	52,014	'	'
Goodwill	0	0	'	'
Other assets	172,396	204,679	'	'
Total assets	2,831,616	2,857,186	'	'
Accounts payable	52,973	8,298	'	'
Accrued Liabilities	29,300	36,442	'	'
Current deferred taxes	-7,961	-7,640	'	'
Short-term borrowings and current maturities of long-term debt	6,815	4,543	'	'
Deferred sale leaseback advance	0	0	'	'
Total current liabilities	81,127	41,643	'	'
Long-term debt, less current maturities	748,322	805,965	'	'
Intercompany notes payable	0	0	'	'
Accrued pension liabilities	0	0	'	'
Other liabilities and deferred credits	13,478	13,750	'	'
Deferred taxes	137,896	144,461	'	'
Temporary equity	0	0	'	'
Common stock	375	373	'	'
Additional paid-in capital	769,891	762,813	'	'
Retained earnings	1,292,722	1,245,220	'	'
Accumulated other comprehensive income (loss)	-66,405	-54,719	'	'
Treasury shares	-147,388	-103,965	'	'
Stockholders' equity	1,849,195	1,849,722	'	'
Noncontrolling interests	1,598	1,645	'	'
Total stockholders' investment	1,850,793	1,851,367	'	'
Total liabilities and stockholders' investment	2,831,616	2,857,186	'	'
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	13,768	0	4,368	5,370
Accounts Receivable, Net, Current	165,742	104,155	'	'
Inventories	43,312	40,864	'	'
Assets held for sale	9,898	8,505	'	'
Prepaid expenses and other current assets	4,683	3,258	'	'
Total current assets	237,403	156,782	'	'
Intercompany investment	111,435	111,435	'	'
Investment in unconsolidated affiliates	0	0	'	'
Intercompany notes receivable	0	0	'	'
Total property and equipment, at cost	1,176,842	1,406,625	'	'
Less - Accumulated depreciation and amortization	-211,745	-211,385	'	'
Property, Plant and Equipment, Net	965,097	1,195,240	'	'
Goodwill	4,755	4,755	'	'
Other assets	2,627	1,462	'	'
Total assets	1,321,317	1,469,674	'	'
Accounts payable	146,863	67,728	'	'
Accrued Liabilities	28,447	32,084	'	'
Current deferred taxes	611	-1,342	'	'
Short-term borrowings and current maturities of long-term debt	0	0	'	'
Deferred sale leaseback advance	137,969	136,930	'	'
Total current liabilities	313,890	235,400	'	'
Long-term debt, less current maturities	0	0	'	'
Intercompany notes payable	132,735	378,983	'	'
Accrued pension liabilities	0	0	'	'
Other liabilities and deferred credits	8,585	37,876	'	'
Deferred taxes	8,191	9,472	'	'
Temporary equity	0	0	'	'
Common stock	4,996	4,996	'	'
Additional paid-in capital	9,291	9,291	'	'
Retained earnings	843,629	793,656	'	'
Accumulated other comprehensive income (loss)	0	0	'	'
Treasury shares	0	0	'	'
Stockholders' equity	857,916	807,943	'	'
Noncontrolling interests	0	0	'	'
Total stockholders' investment	857,916	807,943	'	'
Total liabilities and stockholders' investment	1,321,317	1,469,674	'	'
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	195,666	200,147	305,171	178,400
Accounts Receivable, Net, Current	340,259	310,288	'	'
Inventories	99,502	96,599	'	'
Assets held for sale	22,190	20,771	'	'
Prepaid expenses and other current assets	43,542	45,944	'	'
Total current assets	701,159	673,749	'	'
Intercompany investment	0	0	'	'
Investment in unconsolidated affiliates	259,262	262,615	'	'
Intercompany notes receivable	0	0	'	'
Total property and equipment, at cost	1,329,639	1,320,427	'	'
Less - Accumulated depreciation and amortization	-284,849	-298,930	'	'
Property, Plant and Equipment, Net	1,044,790	1,021,497	'	'
Goodwill	50,765	51,925	'	'
Other assets	56,122	50,392	'	'
Total assets	2,112,098	2,060,178	'	'
Accounts payable	201,656	157,297	'	'
Accrued Liabilities	141,765	141,423	'	'
Current deferred taxes	19,404	21,354	'	'
Short-term borrowings and current maturities of long-term debt	6,854	9,664	'	'
Deferred sale leaseback advance	0	0	'	'
Total current liabilities	369,679	329,738	'	'
Long-term debt, less current maturities	17,543	21,130	'	'
Intercompany notes payable	1,074,931	1,076,292	'	'
Accrued pension liabilities	71,815	86,823	'	'
Other liabilities and deferred credits	34,192	26,500	'	'
Deferred taxes	20,567	15,586	'	'
Temporary equity	24,264	22,283	'	'
Common stock	22,876	22,876	'	'
Additional paid-in capital	270,905	270,905	'	'
Retained earnings	180,170	177,159	'	'
Accumulated other comprehensive income (loss)	17,882	3,880	'	'
Treasury shares	0	0	'	'
Stockholders' equity	491,833	474,820	'	'
Noncontrolling interests	7,274	7,006	'	'
Total stockholders' investment	499,107	481,826	'	'
Total liabilities and stockholders' investment	2,112,098	2,060,178	'	'
Consolidations, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	0	-446	0	0
Accounts Receivable, Net, Current	-328,454	-149,280	'	'
Inventories	0	0	'	'
Assets held for sale	0	0	'	'
Prepaid expenses and other current assets	0	0	'	'
Total current assets	-328,454	-149,726	'	'
Intercompany investment	-1,451,533	-1,384,772	'	'
Investment in unconsolidated affiliates	0	0	'	'
Intercompany notes receivable	-1,066,847	-1,286,354	'	'
Total property and equipment, at cost	0	0	'	'
Less - Accumulated depreciation and amortization	0	0	'	'
Property, Plant and Equipment, Net	0	0	'	'
Goodwill	0	0	'	'
Other assets	-139,800	-167,929	'	'
Total assets	-2,986,634	-2,988,781	'	'
Accounts payable	-321,693	-143,505	'	'
Accrued Liabilities	-6,943	-5,451	'	'
Current deferred taxes	0	0	'	'
Short-term borrowings and current maturities of long-term debt	0	0	'	'
Deferred sale leaseback advance	0	0	'	'
Total current liabilities	-328,636	-148,956	'	'
Long-term debt, less current maturities	0	0	'	'
Intercompany notes payable	-1,207,666	-1,455,275	'	'
Accrued pension liabilities	0	0	'	'
Other liabilities and deferred credits	0	0	'	'
Deferred taxes	0	0	'	'
Temporary equity	0	0	'	'
Common stock	-27,872	-27,872	'	'
Additional paid-in capital	-280,196	-280,196	'	'
Retained earnings	-1,023,799	-970,815	'	'
Accumulated other comprehensive income (loss)	-118,465	-105,667	'	'
Treasury shares	0	0	'	'
Stockholders' equity	-1,450,332	-1,384,550	'	'
Noncontrolling interests	0	0	'	'
Total stockholders' investment	-1,450,332	-1,384,550	'	'
Total liabilities and stockholders' investment	-2,986,634	-2,988,781	'	'
Land and Building [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	154,002	145,973	'	'
Land and Building [Member] | Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	2,688	977	'	'
Land and Building [Member] | Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	49,236	49,499	'	'
Land and Building [Member] | Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	102,078	95,497	'	'
Land and Building [Member] | Consolidations, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	0	0	'	'
Aircraft And Equipment [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	2,443,218	2,646,150	'	'
Aircraft And Equipment [Member] | Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	88,051	64,094	'	'
Aircraft And Equipment [Member] | Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	1,127,606	1,357,126	'	'
Aircraft And Equipment [Member] | Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	1,227,561	1,224,930	'	'
Aircraft And Equipment [Member] | Consolidations, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	$0	$0	'	'

SUPPLEMENTAL_CONDENSED_CONSOLI5

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION CF (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by (used in) operating activities	'	'	$101,167	$132,476
Capital expenditures	-101,672	-160,027	-302,119	-339,559
Proceeds from asset dispositions	391,001	153,710	397,644	155,603
Proceeds from sale of unconsolidated affiliate	'	'	0	112,210
Net cash used in investing activities	'	'	95,525	-71,746
Proceeds from borrowings	'	'	219,354	160,146
Debt issuance costs	'	'	0	-15,152
Repayment of debt	'	'	-282,838	-117,748
Dividends paid	'	'	-22,689	-18,138
Increases (decreases) in cash related to intercompany advances and debt	'	'	0	0
Partial prepayment of put/call obligation	'	'	-30	-27
Acquisition of noncontrolling interest	'	'	-3,170	0
Repurchase of Common Stock	-23,300	'	-43,423	0
Issuance of Common Stock	'	'	1,398	11,550
Tax benefit related to stock-based compensation	'	'	1,642	4,234
Net cash provided by (used in) financing activities	'	'	-129,756	24,865
Effect of exchange rate changes on cash and cash equivalents	'	'	-7,367	12,303
Net increase (decrease) in cash and cash equivalents	'	'	59,569	97,898
Cash and cash equivalents at beginning of period	'	'	204,341	215,623
Cash and cash equivalents at end of period	263,910	313,521	263,910	313,521
Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by (used in) operating activities	'	'	-45,192	-20,277
Capital expenditures	'	'	-25,668	-11,206
Proceeds from asset dispositions	'	'	0	0
Proceeds from sale of unconsolidated affiliate	'	'	'	0
Net cash used in investing activities	'	'	-25,668	-11,206
Proceeds from borrowings	'	'	218,000	157,500
Debt issuance costs	'	'	'	-15,152
Repayment of debt	'	'	-275,502	-114,806
Dividends paid	'	'	-22,689	-15,072
Increases (decreases) in cash related to intercompany advances and debt	'	'	241,300	-24,615
Partial prepayment of put/call obligation	'	'	-30	-27
Acquisition of noncontrolling interest	'	'	0	'
Repurchase of Common Stock	'	'	-43,423	'
Issuance of Common Stock	'	'	1,398	11,550
Tax benefit related to stock-based compensation	'	'	1,642	4,234
Net cash provided by (used in) financing activities	'	'	120,696	3,612
Effect of exchange rate changes on cash and cash equivalents	'	'	0	0
Net increase (decrease) in cash and cash equivalents	'	'	49,836	-27,871
Cash and cash equivalents at beginning of period	'	'	4,640	31,853
Cash and cash equivalents at end of period	54,476	3,982	54,476	3,982
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by (used in) operating activities	'	'	115,666	46,258
Capital expenditures	'	'	-141,269	-275,801
Proceeds from asset dispositions	'	'	208,373	154,689
Proceeds from sale of unconsolidated affiliate	'	'	'	0
Net cash used in investing activities	'	'	67,104	-121,112
Proceeds from borrowings	'	'	0	0
Debt issuance costs	'	'	'	0
Repayment of debt	'	'	0	0
Dividends paid	'	'	0	34
Increases (decreases) in cash related to intercompany advances and debt	'	'	-169,002	73,818
Partial prepayment of put/call obligation	'	'	0	0
Acquisition of noncontrolling interest	'	'	0	'
Repurchase of Common Stock	'	'	0	'
Issuance of Common Stock	'	'	0	0
Tax benefit related to stock-based compensation	'	'	0	0
Net cash provided by (used in) financing activities	'	'	-169,002	73,852
Effect of exchange rate changes on cash and cash equivalents	'	'	0	0
Net increase (decrease) in cash and cash equivalents	'	'	13,768	-1,002
Cash and cash equivalents at beginning of period	'	'	0	5,370
Cash and cash equivalents at end of period	13,768	4,368	13,768	4,368
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by (used in) operating activities	'	'	30,247	106,495
Capital expenditures	'	'	-135,182	-158,415
Proceeds from asset dispositions	'	'	189,271	106,777
Proceeds from sale of unconsolidated affiliate	'	'	'	112,210
Net cash used in investing activities	'	'	54,089	60,572
Proceeds from borrowings	'	'	1,354	2,646
Debt issuance costs	'	'	'	0
Repayment of debt	'	'	-7,336	-2,942
Dividends paid	'	'	0	-3,100
Increases (decreases) in cash related to intercompany advances and debt	'	'	-72,298	-49,203
Partial prepayment of put/call obligation	'	'	0	0
Acquisition of noncontrolling interest	'	'	-3,170	'
Repurchase of Common Stock	'	'	0	'
Issuance of Common Stock	'	'	0	0
Tax benefit related to stock-based compensation	'	'	0	0
Net cash provided by (used in) financing activities	'	'	-81,450	-52,599
Effect of exchange rate changes on cash and cash equivalents	'	'	-7,367	12,303
Net increase (decrease) in cash and cash equivalents	'	'	-4,481	126,771
Cash and cash equivalents at beginning of period	'	'	200,147	178,400
Cash and cash equivalents at end of period	195,666	305,171	195,666	305,171
Consolidations, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by (used in) operating activities	'	'	446	0
Capital expenditures	'	'	0	105,863
Proceeds from asset dispositions	'	'	0	-105,863
Proceeds from sale of unconsolidated affiliate	'	'	'	0
Net cash used in investing activities	'	'	0	0
Proceeds from borrowings	'	'	0	0
Debt issuance costs	'	'	'	0
Repayment of debt	'	'	0	0
Dividends paid	'	'	0	0
Increases (decreases) in cash related to intercompany advances and debt	'	'	0	0
Partial prepayment of put/call obligation	'	'	0	0
Acquisition of noncontrolling interest	'	'	0	'
Repurchase of Common Stock	'	'	0	'
Issuance of Common Stock	'	'	0	0
Tax benefit related to stock-based compensation	'	'	0	0
Net cash provided by (used in) financing activities	'	'	0	0
Effect of exchange rate changes on cash and cash equivalents	'	'	0	0
Net increase (decrease) in cash and cash equivalents	'	'	446	0
Cash and cash equivalents at beginning of period	'	'	-446	0
Cash and cash equivalents at end of period	$0	$0	$0	$0