Bristow (BRSWQ) 10-K 21 May 14 2014 FY Annual report Financial data

DOCUMENT_AND_ENTITY_INFORMATIO

DOCUMENT AND ENTITY INFORMATION (USD $)	12 Months Ended
	Mar. 31, 2014	16-May-14	Sep. 30, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Mar-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	'	35,585,384	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Public Float	'	'	$2,530,357,785

CONSOLIDATED_STATEMENTS_OF_INC

CONSOLIDATED STATEMENTS OF INCOME (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Gross revenue:	'	'	'
Operating revenue from non-affiliates	$1,423,653	$1,290,284	$1,170,299
Operating revenue from affiliates	92,673	53,731	28,928
Reimbursable revenue from non-affiliates	153,180	164,184	142,088
Reimbursable revenue from affiliates	76	274	488
Total consolidated gross revenue	1,669,582	1,508,473	1,341,803
Operating expense:	'	'	'
Direct cost	1,041,575	900,378	810,728
Reimbursable expense	144,557	157,416	136,922
Impairment of inventories	12,669	0	25,919
Depreciation and amortization	95,977	96,284	96,144
General and administrative	199,814	163,389	135,333
Total operating expense	1,494,592	1,317,467	1,205,046
Gain (loss) on disposal of assets	-722	8,068	-31,670
Earnings from unconsolidated affiliates, net of losses	12,709	25,070	10,679
Operating income	186,977	224,144	115,766
Interest income	1,720	788	560
Interest expense	-44,938	-42,446	-38,130
Extinguishment of debt	0	-14,932	0
Gain on sale of unconsolidated affiliate	103,924	0	0
Other income (expense), net	-2,692	-877	1,246
Income before provision for income taxes	244,991	166,677	79,442
Provision for income taxes	-57,212	-35,002	-14,201
Net income	187,779	131,675	65,241
Net income attributable to noncontrolling interests	-1,042	-1,573	-1,711
Net income attributable to Bristow Group	186,737	130,102	63,530
Net Income (Loss) Available to Common Stockholders, Basic	$186,737	$130,102	$63,530
Earnings per common share:	'	'	'
Earnings Per Share, Basic	$5.15	$3.61	$1.76
Diluted earnings per share	$5.09	$3.57	$1.73
Cash dividends declared per common share	$1	$0.80	$0.60

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Statement of Comprehensive Income [Abstract]	'	'	'
Net income	$187,779	$131,675	$65,241
Currency translation adjustments	18,729	-11,982	905
Pension liability adjustment, net of tax	23,367	-28,462	-27,877
Unrealized loss on cash flow hedges, net	0	0	-2,150
Other comprehensive income	229,875	91,231	36,119
Net income attributable to noncontrolling interests	-1,042	-1,573	-1,711
Currency Translation Adjustment Attributable to Noncontrolling Interest and Temporary Equity	-1,081	0	0
Total comprehensive (income) loss attributable to noncontrolling interests	39	-1,573	-1,711
Total comprehensive income attributable to Bristow Group	$229,914	$89,658	$34,408

CONSOLIDATED_STATEMENTS_OF_COM1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME PARENTHETICALS (USD $)	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent [Abstract]	'	'	'
Income tax effect of cash flow hedges	$0	$0	($1.50)
Income tax effect of pension liablity adjustment	($10.40)	$10	$3.40

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and cash equivalents	$204,341	$215,623
Accounts receivable from non-affiliates, net of allowance for doubtful accounts	292,650	254,520
Accounts receivable from affiliates, net of allowance for doubtful accounts	4,793	8,261
Inventories	137,463	153,969
Assets held for sale	29,276	8,290
Prepaid expenses and other current assets	53,084	35,095
Total current assets	721,607	675,758
Investment in unconsolidated affiliates	262,615	272,123
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment, at cost	2,792,123	2,414,647
Less - Accumulated depreciation and amortization	-523,372	-493,575
Total property and equipment, net	2,268,751	1,921,072
Goodwill	56,680	28,897
Other assets	88,604	52,842
Total assets	3,398,257	2,950,692
LIABILITIES AND STOCKHOLDERS' INVESTMENT	'	'
Accounts payable	89,818	69,821
Accrued wages, benefits and related taxes	71,192	56,084
Income taxes payable	13,588	11,659
Other accrued taxes	9,302	7,938
Deferred revenue	31,157	21,646
Accrued maintenance and repairs	17,249	15,391
Accrued interest	16,157	14,249
Other accrued liabilities	45,853	20,714
Current deferred taxes	12,372	0
Short-term borrowings and current maturities of long-term debt	14,207	22,323
Deferred sale leaseback advance - current	136,930	0
Total current liabilities	457,825	239,825
Total long-term debt	827,095	764,946
Accrued pension liabilities	86,823	126,647
Other liabilities and deferred credits	78,126	57,196
Deferred taxes	169,519	151,121
Commitments and contingencies	'	'
Temporary Equity	22,283	0
Stockholders' investment:	'	'
Common stock	373	367
Additional paid-in capital	762,813	731,883
Retained earnings	1,245,220	1,094,803
Accumulated other comprehensive loss	-156,506	-199,683
Treasury shares	-103,965	-26,304
Stockholders' equity	1,747,935	1,601,066
Noncontrolling interests	8,651	9,891
Total stockholders' investment	1,756,586	1,610,957
Total liabilities and stockholders' investment	3,398,257	2,950,692
Land and Building [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment, at cost	145,973	108,593
Aircraft and equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment, at cost	$2,646,150	$2,306,054

CONSOLIDATED_BALANCE_SHEETS_PA

CONSOLIDATED BALANCE SHEETS PARENTHETICALS (USD $)	Mar. 31, 2014	Mar. 31, 2013
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	35,708,469	36,150,639
Treasury stock, shares acquired, par value method	1,291,441	1,291,741
Treasury stock, shares	1,595,479	551,604

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:	'	'	'
Net income	$187,779	$131,675	$65,241
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization	95,977	96,284	96,144
Deferred income tax	5,465	-8,587	-16,288
Write-off of deferred financing fees	12,733	4,642	0
Amortization of debt discount	3,708	3,597	3,380
Gain (loss) on disposal of assets	-722	8,068	-31,670
Gain on sale of unconsolidated affiliate	-103,924	0	0
Impairment of inventories	12,669	0	25,919
Extinguishment of debt	0	14,932	0
Stock-based compensation	15,433	11,869	11,510
Equity in earnings from unconsolidated affiliates less than dividends received	1,629	-9,244	5,486
Tax benefit related to stock-based compensation	-5,723	-500	-354
Increase (decrease) in cash resulting from changes in:	'	'	'
Accounts receivable	3,647	-2,739	-12,847
Inventories	12,824	-1,340	7,364
Prepaid expenses and other assets	-3,149	-39,269	1,926
Accounts payable	-5,154	25,654	2,675
Accrued liabilities	11,697	38,790	14,607
Other liabilities and deferred credits	-14,239	9,068	-5,086
Net cash provided by operating activities	232,094	266,764	231,347
Cash flows from investing activities:	'	'	'
Capital expenditures	-628,613	-571,425	-326,420
Deposits on assets held for sale	0	0	200
Acquisitions, net of cash received	-39,850	0	0
Proceeds from sales of joint ventures	112,210	0	0
Proceeds from asset dispositions	289,951	314,847	239,843
Investment in unconsolidated affiliate	0	-51,179	-2,378
Net cash used in investing activities	-266,302	-307,757	-88,755
Cash flows from financing activities:	'	'	'
Proceeds from borrowings	533,064	675,449	159,993
Payments for contingent consideration	-6,000	0	0
Debt issuance costs	-15,523	-10,344	-871
Repayment of debt and debt redemption premiums	-512,492	-663,921	-113,419
Proceeds from assignment of aircraft purchase agreements	106,113	0	0
Partial prepayment of put/call obligation	-57	-63	-63
Acquisition of noncontrolling interest	-2,078	0	-262
Repurchase of common stock	-77,661	-1,219	-25,085
Common stock dividends paid	-36,320	-28,734	-21,616
Issuance of common stock	15,398	15,289	5,293
Tax benefit related to stock-based compensation	5,723	500	354
Net cash provided by (used in) financing activities	10,167	-13,043	4,324
Effect of exchange rate changes on Cash and Cash Equivalents	12,759	8,109	-1,727
Net increase (decrease) in cash and cash equivalents	-11,282	-45,927	145,189
Cash and cash equivalents at beginning of period	215,623	261,550	116,361
Cash and cash equivalents at end of period	204,341	215,623	261,550
Supplemental disclosure of cash flow information:	'	'	'
Aircraft received for payment on accounts receivable	0	8,300	0
Contingent liability for investment in unconsolidated affiliate	0	34,245	0
Deferred Sale Leaseback Progress Payments	$60,194	$0	$0

CONSOLIDATED_STATEMENT_OF_STOC

CONSOLIDATED STATEMENT OF STOCKHOLDERS' INVESTMENT (USD $)	2 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Beginning balance, value	'	$1,610,957	$1,521,824	$1,518,775
Common Stock, Shares, Outstanding, Beginning Balance	'	36,150,639	35,755,317	'
Issuance of common stock through incentive compensation	'	33,014	28,259	13,833
Issuance of common stock through incentive compensation, shares	'	601,405	420,031	220,679
Correction of historical shares outstanding, shares	300	300	'	-249,610
Correction of historical shares outstanding	'	0	'	0
Distributions paid to noncontrolling interests	'	-57	-63	'
Acquisition of a subsidiary with noncontrolling interests	'	-2,078	'	-239
Repurchase of common stock	'	-77,661	-1,219	-25,085
Repurchases of common stock, shares	-598,075	-1,043,875	-24,709	-526,895
Common stock dividends declared	'	-36,320	-28,734	-21,616
Currency translation adjustments, noncontrolling interest	'	-1,554	-341	37
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	'	187,108	131,675	65,241
Other comprehensive income	'	43,177	-40,444	-29,122
Ending balance, value	1,756,586	1,756,586	1,610,957	1,521,824
Common Stock, Shares, Outstanding, Ending Balance	35,708,469	35,708,469	36,150,639	35,755,317
Temporary Equity, Foreign Currency Translation Adjustments	'	500	'	'
Temporary Equity, Net Income	'	700	'	'
Common Stock [Member]	'	'	'	'
Beginning balance, value	'	367	363	363
Common Stock, Shares, Outstanding, Beginning Balance	'	36,150,639	35,755,317	36,311,143
Issuance of common stock through incentive compensation	'	6	4	0
Correction of historical shares outstanding	'	0	'	0
Distributions paid to noncontrolling interests	'	0	0	'
Acquisition of a subsidiary with noncontrolling interests	'	0	'	0
Repurchase of common stock	'	0	0	0
Common stock dividends declared	'	0	0	0
Currency translation adjustments, noncontrolling interest	'	0	0	0
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	'	0	0	0
Other comprehensive income	'	0	0	0
Ending balance, value	373	373	367	363
Common Stock, Shares, Outstanding, Ending Balance	35,708,469	35,708,469	36,150,639	35,755,317
Additional Paid-in Capital [Member]	'	'	'	'
Beginning balance, value	'	731,883	703,628	689,795
Issuance of common stock through incentive compensation	'	33,008	28,255	13,833
Correction of historical shares outstanding	'	0	'	0
Distributions paid to noncontrolling interests	'	0	0	'
Acquisition of a subsidiary with noncontrolling interests	'	-2,078	'	0
Repurchase of common stock	'	0	0	0
Common stock dividends declared	'	0	0	0
Currency translation adjustments, noncontrolling interest	'	0	0	0
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	'	0	0	0
Other comprehensive income	'	0	0	0
Ending balance, value	762,813	762,813	731,883	703,628
Retained Earnings [Member]	'	'	'	'
Beginning balance, value	'	1,094,803	993,435	951,660
Issuance of common stock through incentive compensation	'	0	0	0
Correction of historical shares outstanding	'	0	'	0
Distributions paid to noncontrolling interests	'	0	0	'
Acquisition of a subsidiary with noncontrolling interests	'	0	'	-139
Repurchase of common stock	'	0	0	0
Common stock dividends declared	'	-36,320	-28,734	-21,616
Currency translation adjustments, noncontrolling interest	'	0	0	0
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	'	186,737	130,102	63,530
Other comprehensive income	'	0	0	0
Ending balance, value	1,245,220	1,245,220	1,094,803	993,435
Accumulated Other Comprehensive Income (Loss) [Member]	'	'	'	'
Beginning balance, value	'	-199,683	-159,239	-130,117
Issuance of common stock through incentive compensation	'	0	0	0
Correction of historical shares outstanding	'	0	'	0
Distributions paid to noncontrolling interests	'	0	0	'
Acquisition of a subsidiary with noncontrolling interests	'	0	'	0
Repurchase of common stock	'	0	0	0
Common stock dividends declared	'	0	0	0
Currency translation adjustments, noncontrolling interest	'	0	0	0
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	'	0	0	0
Other comprehensive income	'	43,177	-40,444	-29,122
Ending balance, value	-156,506	-156,506	-199,683	-159,239
Treasury Stock [Member]	'	'	'	'
Beginning balance, value	'	-26,304	-25,085	0
Issuance of common stock through incentive compensation	'	0	0	0
Correction of historical shares outstanding	'	0	'	0
Distributions paid to noncontrolling interests	'	0	0	'
Acquisition of a subsidiary with noncontrolling interests	'	0	'	0
Repurchase of common stock	'	-77,661	-1,219	-25,085
Common stock dividends declared	'	0	0	0
Currency translation adjustments, noncontrolling interest	'	0	0	0
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	'	0	0	0
Other comprehensive income	'	0	0	0
Ending balance, value	-103,965	-103,965	-26,304	-25,085
Noncontrolling Interest [Member]	'	'	'	'
Beginning balance, value	'	9,891	8,722	7,074
Issuance of common stock through incentive compensation	'	0	0	0
Correction of historical shares outstanding	'	0	'	0
Distributions paid to noncontrolling interests	'	-57	-63	'
Acquisition of a subsidiary with noncontrolling interests	'	0	'	-100
Repurchase of common stock	'	0	0	0
Common stock dividends declared	'	0	0	0
Currency translation adjustments, noncontrolling interest	'	-1,554	-341	37
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	'	371	1,573	1,711
Other comprehensive income	'	0	0	0
Ending balance, value	$8,651	$8,651	$9,891	$8,722

OPERATIONS_BASIS_OF_PRESENTATI

OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Mar. 31, 2014
Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]	'
OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	'
	Note 1 — OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Operations
	Bristow Group Inc., a Delaware corporation (together with its consolidated entities, unless the context requires otherwise, “Bristow Group”, the “Company”, “we”, “us”, or “our”), is the leading provider of helicopter services to the worldwide offshore energy industry based on the number of aircraft operated and one of two helicopter service providers to the offshore energy industry with global operations. With a fleet of 494 aircraft as of March 31, 2014, including 131 held by unconsolidated affiliates, Bristow Group and its affiliates conduct major transportation operations in the North Sea, Nigeria and the U.S. Gulf of Mexico, and in most of the other major offshore energy regions of the world, including Australia, Brazil, Canada, Russia and Trinidad. We and our affiliates provide private sector search and rescue (“SAR”) services in Australia, Canada, Norway, Russia and Trinidad, and began providing public sector SAR services in North Scotland on behalf of the Maritime & Coastguard Agency in June 2013. In March 2013, we were awarded a new contract to provide SAR services for all of the U.K. (the “U.K. SAR contract”). Certain of our affiliates also provide charter and scheduled services targeting U.K. oil and gas industry transport, helicopter military training and helicopter flight training.
	Basis of Presentation
	The consolidated financial statements include the accounts of Bristow Group Inc. and its consolidated entities after elimination of all significant intercompany accounts and transactions. Investments in affiliates in which we have a majority voting interest and entities that meet the criteria of Variable Interest Entities (“VIEs”) of which we are the primary beneficiary are consolidated. See discussion of VIEs in Note 3. We apply the equity method of accounting for investments in entities if we have the ability to exercise significant influence over an entity that (a) does not meet the variable interest entity criteria or (b) meets the variable interest entity criteria, but for which we are not deemed to be the primary beneficiary. We apply the cost method of accounting for investments in other entities if we do not have the ability to exercise significant influence over the unconsolidated affiliate. These investments in private companies are carried at cost and are adjusted only for capital distributions and other-than-temporary declines in value. Dividends from cost method investments are recognized in earnings from unconsolidated affiliates, net of losses, when received.
	Effective February 6, 2014, we began consolidating Eastern Airways International Limited (“Eastern Airways”). See Note 2 for further details.
	Our fiscal year ends March 31, and we refer to fiscal years based on the end of such period. Therefore, the fiscal year ended March 31, 2014 is referred to as fiscal year 2014.
	Certain reclassifications of prior period information have been made to conform to the presentation of the current period information. These reclassifications had no effect on net income as previously reported.
	Summary of Significant Accounting Policies
	Use of Estimates — The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Areas where accounting estimates are made by management include:
	•	Allowances for doubtful accounts;
	•	Inventory allowances;
	•	Property and equipment;
	•	Goodwill, intangible and other long-lived assets;
	•	Pension benefits;
	•	Contingent liabilities; and
	•	Taxes.
	Cash and Cash Equivalents — Our cash equivalents include funds invested in highly-liquid debt instruments with original maturities of 90 days or less.
	Accounts Receivable — Trade and other receivables are stated at net realizable value. We grant short-term credit to our clients, primarily major integrated, national and independent oil and gas companies. We establish allowances for doubtful accounts on a case-by-case basis when a determination is made that the required payment is unlikely to occur. In establishing these allowances, we consider a number of factors, including our historical experience, change in our clients’ financial position and restrictions placed on the conversion of local currency into U.S. dollars, as well as disputes with clients regarding the application of contract provisions to our services.
	The following table is a rollforward of the allowance for doubtful accounts, including affiliates and non-affiliates (in thousands):
		Fiscal Year Ended March 31,
		2014			2013			2012
	Balance – beginning of fiscal year	$	5,079		$	243		$	99
	Additional allowances	87			4,887			162
	Write-offs and collections	(92		)	(51		)	(18		)
	Balance – end of fiscal year	$	5,074		$	5,079		$	243
	During fiscal year 2013, the allowance for doubtful accounts for non-affiliates was increased by $4.9 million related to amounts due from ATP Oil and Gas Corporation, a client in the U.S. Gulf of Mexico, due to its filing for bankruptcy.
	Inventories — Inventories are stated at the lower of average cost or market value and consist primarily of spare parts. The following table is a rollforward of the allowance related to dormant, obsolete and excess inventory (in thousands):
		Fiscal Year Ended March 31,
		2014			2013			2012
	Balance – beginning of fiscal year	$	31,504		$	34,364		$	16,018
	Impairment of inventories	12,669			—			25,919
	Additional allowances	6,807			8,479			3,124
	Inventory disposed and scrapped	(6,096		)	(10,053		)	(11,331		)
	Foreign currency effects	2,414			(1,286		)	634
	Balance – end of fiscal year	$	47,298		$	31,504		$	34,364
	During fiscal years 2014 and 2012, we recorded impairment charges of $12.7 million and $25.9 million, respectively, to write-down certain spare parts within inventories to market value. These impairment charges resulted from the identification of $50.5 million and $48.8 million, respectively, of inventory that is dormant, obsolete or excess based on a review of our future inventory needs completed during fiscal years 2014 and 2012. The fiscal year 2014 impairment charge related primarily to spare parts held for a medium aircraft model where we have decided to remove this model from our fleet over the next two fiscal years. As we had intended to operate this model type longer in certain markets, we have identified excess inventory that will not be used on our aircraft and will therefore need to be sold or otherwise disposed of. The fiscal year 2012 inventory review was driven by a number of changes to our future fleet strategy. The change in fleet strategy resulted from (1) a continued shift in demand for our aircraft to newer technology aircraft types, (2) the introduction of the Bristow Client Promise through which have positioned Bristow Group as the premium service provider of offshore transportation services and (3) the introduction of the new financial metric of Bristow Value Added. The change in demand for our older aircraft accelerated as a result of a renewed focus on safety and reliability across the offshore energy industry after the Macondo oil spill in the U.S. Gulf of Mexico. The change in fleet strategy resulted in the determination that we will operate certain older types of aircraft for a shorter period than originally anticipated and led to the global review of spare parts inventories supporting our fleet. These impairment charges are included on a separate line within operating expense on the consolidated statements of income.
	During fiscal year 2014, we wrote off $11.1 million of inventory destroyed in a fire at our Port Harcourt facility in Nigeria, which is insured and therefore fully offset by a receivable recorded of $11.1 million for insurance proceeds. See Note 8 for further details on the fire in Port Harcourt.
	Additionally, during fiscal year 2012, we sold inventory in Mexico for a loss of $1.0 million. This loss is recorded as a reduction in gain (loss) on disposal of assets on the consolidated statement of income.
	Prepaid Expenses and Other Current Assets — As of March 31, 2014, prepaid expenses and other current assets included $5.5 million related to the 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. As of March 31, 2013, prepaid expenses and other current assets included $12.7 million in fees related to a potential financing in connection with our bid to provide SAR services in the U.K. In April 2013, we increased our borrowing capacity on our Revolving Credit Facility from $200 million to $350 million and cancelled the potential financing. During fiscal year 2014, we included the $12.7 million as interest expense on our consolidated statement of income.
	Property and Equipment — Property and equipment are stated at cost. Property and equipment includes construction in progress, primarily consisting of progress payments on aircraft purchases and facility construction, of $477.9 million and $222.8 million as of March 31, 2014 and 2013, respectively. Interest costs applicable to the construction of qualifying assets are capitalized as a component of the cost of such assets.
	Depreciation and amortization are provided on the straight-line method over the estimated useful lives of the assets. The estimated useful lives of aircraft generally range from 5 to 15 years, and the residual value used in calculating depreciation of aircraft generally ranges from 30% to 50% of cost. The estimated useful lives for buildings on owned properties range from 15 to 40 years. Other depreciable assets are depreciated over estimated useful lives ranging from 3 to 15 years, except for leasehold improvements which are depreciated over the lesser of the useful life of the improvement or the lease term (including any period where we have options to renew if it is probable that we will renew the lease). The cost and related accumulated depreciation of assets sold or otherwise disposed of are removed from the accounts and the resulting gains or losses are included in gain (loss) on disposal of assets.
	We capitalize betterments and improvements to our aircraft and amortize such costs over the remaining useful lives of the aircraft. Betterments and improvements increase the life or utility of an aircraft.
	Goodwill — Goodwill is recorded when the cost of acquired businesses exceeds the fair value of the identifiable net assets acquired. Goodwill has an indefinite useful life and is not amortized, but is assessed for impairment annually as of March 31.
	Goodwill totaling $56.7 million and $28.9 million as of March 31, 2014 and 2013, respectively, relates to our business units as follows (in thousands):
		Europe			Bristow			West			Other			Total
					Academy			Africa			International
	March 31, 2012	$	12,554		$	10,260		$	6,254		$	576		$	29,644
	Foreign currency translation	(671		)	(48		)	(28		)	—			(747		)
	March 31, 2013	11,883			10,212			6,226			576			28,897
	Foreign currency translation	1,839			90			(49		)	—			1,880
	Eastern Airways acquisition	26,479			—			—			—			26,479
	Impairments	—			—			—			(576		)	(576		)
	March 31, 2014	$	40,201		$	10,302		$	6,177		$	—		$	56,680
	To complete our annual assessment of goodwill impairment, we first assess qualitative factors to determine if it is more likely than not that the fair value of a reporting unit is less than its carrying amount and if a quantitative assessment should be performed. As of March 31, 2014, we performed a qualitative analysis and concluded it is more likely than not that the fair value of each reporting unit excluding our Other International business unit related to Mexico is not less than the carrying value and, therefore, did not perform a quantitative analysis for all business units with goodwill. Qualitative factors considered during our assessments included the capital markets environment, global economic conditions, the demand for helicopter services, the necessity for training of new pilots (Bristow Academy only), changes in our results of operations, the magnitude of the excess of fair value over the carrying amount of each reporting unit as determined in prior years’ quantitative testing and other factors. In addition to the annual assessment, an impairment assessment of goodwill is conducted when events occur or circumstance change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. During fiscal year 2014, we impaired our goodwill in our Other International business unit related to Mexico as all of the contracts in Mexico have expired. As of March 31, 2014, goodwill totaling approximately $4.8 million is expected to be deductible for tax purposes. For further details on the Eastern Airways acquisition, see Note 2.
	Other Intangible Assets — Intangible assets with finite useful lives are amortized over their respective estimated useful lives to their estimated residual values. Intangible assets by type were as follows (in thousands):
		Client			Client			Trade name and trademarks			Internally developed software			Licenses			Total
		contracts			relationships
		Gross Carrying Amount
	March 31, 2012	$	7,251		$	1,746		$	—		$	—		$	840		$	9,837
	Foreign currency translation	(64		)	(16		)	—			—			(7		)	(87		)
	March 31, 2013	7,187			1,730			—			—			833			9,750
	Foreign currency translation	(58		)	(14		)	—			—			(6		)	(78		)
Eastern Airways acquisition	—			10,291			5,326			1,339			—			16,956
March 31, 2014	$	7,129		$	12,007		$	5,326		$	1,339		$	827		$	26,628
	Accumulated Amortization
March 31, 2012	$	(4,345	)	$	(582	)	$	—		$	—		$	(304	)	$	(5,231	)
Amortization expense	(1,317		)	(176		)	—			—			(84		)	(1,577		)
March 31, 2013	(5,662		)	(758		)	—			—			(388		)	(6,808		)
Amortization expense	(1,270		)	(170		)	—			—			(81		)	(1,521		)
March 31, 2014	$	(6,932	)	$	(928	)	$	—		$	—		$	(469	)	$	(8,329	)
Weighted average remaining contractual life, in years	0.2			20			15			5			4.4			12
Future amortization expense of intangible assets for each of the years ending March 31 are as follows (in thousands):
	2015	$	1,586
	2016	1,389
	2017	1,389
	2018	1,389
	2019	1,279
	Thereafter	11,267
		$	18,299
The client contracts, client relationships, trade name and trademarks, internally developed software and licenses relate to Bristow Norway and Eastern Airways, included in our Europe business unit. For further details on the Eastern Airways acquisition, see Note 2.
Impairment of Long-Lived Assets — Long-lived assets, such as property and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the carrying amount of an asset or asset group to be held and used exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset or asset group exceeds the fair value of the asset or asset group. Assets held for sale are classified as current assets on our consolidated balance sheets and recorded at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale (if any) are presented separately in the appropriate asset and liability sections of the consolidated balance sheets. We recorded impairment charges of $6.8 million, $4.4 million and $26.3 million included in gain (loss) on disposal of assets to reduce the carrying value of aircraft held for sale in fiscal years 2014, 2013 and 2012, respectively.
During fiscal year 2013, we reclassified four large aircraft previously classified as held for sale to aircraft and equipment as they were returned to operational status as a result of the issues associated with EC225 Super Puma helicopter discussed in Note 8 and we reversed previously recorded impairment charges of $8.7 million. This reversal of charges is included in gain (loss) on disposal of assets on the consolidated statements of income. In fiscal year 2012, we recorded an impairment charge of $2.7 million included in depreciation and amortization expense for two medium aircraft, as management intends to sell the aircraft prior to their previously estimated useful lives as a result of a review of our operational fleet. See further discussion in Note 4.
Impairment of Investments in Unconsolidated Affiliates — We perform regular reviews of each investee’s financial condition, the business outlook for its products and services, and its present and projected results and cash flows. When an investee has experienced consistent declines in financial performance or difficulties raising capital to continue operations, and when we expect the decline to be other-than-temporary, the investment is written down to fair value. Actual results may vary from estimates due to the uncertainty regarding the projected financial performance of investees, the severity and expected duration of declines in value, and the available liquidity in the capital markets to support the continuing operations of the investees in which we have investments. We did not recognize any impairment charges related to our investments in unconsolidated affiliates in fiscal years 2014, 2013 and 2012.
Other Assets — In addition to the intangible assets discussed above, other assets primarily include debt issuance costs of $11.4 million and $11.2 million as of March 31, 2014 and 2013, respectively, which are being amortized over the life of the related debt, deferred tax assets of $17.6 million and $11.6 million as of March 31, 2014 and 2013, respectively, and contract acquisition costs of $15.2 million and $9.7 million as of March 31, 2014 and 2013, respectively, related to the 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.
Contingent Liabilities — We establish reserves for estimated loss contingencies when we believe a loss is probable and the amount of the loss can be reasonably estimated. Our contingent liability reserves relate primarily to potential tax assessments, litigation, personal injury claims and environmental liabilities. Income for each reporting period includes revisions to contingent liability reserves resulting from different facts or information which become known or circumstances which change and affect our previous assumptions with respect to the likelihood or amount of loss. Such revisions are based on information which becomes known or circumstances that change after the reporting date for the previous period through the reporting date of the current period. Reserves for contingent liabilities are based upon our assumptions and estimates regarding the probable outcome of the matter. Should the outcome differ from our assumptions and estimates or other events result in a material adjustment to the accrued estimated reserves, revisions to the estimated reserves for contingent liabilities would be required to be recognized.
Proceeds from casualty insurance settlements in excess of the carrying value of damaged assets are recognized in gain (loss) on disposal of assets when we have received proof of loss documentation or are otherwise assured of collection of these amounts.
Deferred Sale Leaseback Advance — As of March 31, 2014, we had $166.3 million included in deferred sale leaseback advance — current ($136.9 million) and long-term ($29.4 million) — included in other liabilities and deferred credits on our consolidated balance sheet. During fiscal year 2014, we received payment of approximately $106.1 million for progress payments we had previously 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 payments made by the purchaser during fiscal year 2014 totaling $60.2 million, with a corresponding increase to construction in progress. We will continue to increase both construction in progress and deferred sale leaseback advance — current or long-term until we lease the aircraft, at which time the construction in progress and the liabilities will be removed from our consolidated balance sheet.
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 has occurred or 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 consolidated statements of income.
Bristow Academy 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 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 in a forward sales account within deferred income until recognized as revenue in accordance with the above policy. Airport services revenue is recognized when earned.
Pension Benefits — See Note 10 for a discussion of our accounting for pension benefits.
Maintenance and Repairs — We generally charge maintenance and repair costs, including major aircraft component overhaul costs, to earnings as the costs are incurred. However, certain major aircraft components, such as engines and transmissions, are maintained by third-party vendors under contractual agreements. Under these agreements, we are charged an agreed amount per hour of flying time related to maintenance, repair and overhaul of the parts and components covered. The costs charged under these contractual agreements are recognized in the period in which the flight hours occur. To the extent that we have not yet been billed for costs incurred under these arrangements, these costs are included in accrued maintenance and repairs on our consolidated balance sheets. From time to time, we receive credits from our original equipment manufacturers as settlement for additional labor and maintenance expense costs incurred for aircraft performance issues. We record these credits as a reduction in maintenance expense when the credits are utilized in lieu of cash payments for purchases or services. The cost of certain major overhauls on fixed-wing aircraft operated by Eastern Airways are capitalized when incurred and depreciated over the period until the next expected major overhaul.
Taxes — We follow the liability method of accounting for income taxes. Under this method, deferred income tax assets and liabilities are determined based upon temporary differences between the carrying amount and tax basis of our assets and liabilities and measured using enacted tax rates and laws that will be in effect when the differences are expected to reverse. The effect on deferred income tax assets and liabilities of a change in the tax rates is recognized in income in the period in which the change occurs. We record a valuation reserve when we believe that it is more likely than not that any deferred income tax asset created will not be realized.
In assessing the realizability of deferred income tax assets, management considers whether it is more likely than not that some portion or all of the deferred income tax assets will not be realized. The ultimate realization of deferred income tax assets is dependent upon the generation of future taxable income during the periods in which such temporary differences become deductible.
We recognize tax benefits attributable to uncertain tax positions when it is more-likely-than-not that a tax position will be sustained upon examination by the authorities. The benefit from a position that has surpassed the more-likely-than-not threshold is the largest amount of benefit that is more than 50% likely to be realized upon settlement. We recognize interest and penalties accrued related to unrecognized tax benefits as a component of provision for income taxes.
Foreign Currency — In preparing our financial statements, we must convert all non-U.S. dollar currencies to U.S. dollars. Balance sheet information is presented based on the exchange rate as of the balance sheet date, and statement of income information is presented based on the average exchange rate for the period. The various components of stockholders’ investment are presented at their historical average exchange rates. The resulting difference after applying the different exchange rates is the currency translation adjustment. Foreign currency transaction gains and losses are recorded in other income (expense), net and result from the effect of changes in exchange rates on transactions denominated in currencies other than a company’s functional currency, including transactions between consolidated companies. An exception is made where an intercompany loan or advance is deemed to be of a long-term investment nature, in which instance foreign currency transaction gains or losses are included as currency translation adjustments and are reported in stockholders’ investment as accumulated other comprehensive gains or losses. Changes in exchange rates could cause significant changes in our financial position and results of operations in the future.
As a result of changes in exchange rates, we recorded foreign currency transaction losses of approximately $3.7 million and $1.1 million during fiscal years 2014 and 2013, respectively, and foreign currency transaction gains of $0.4 million during fiscal year 2012. 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 fiscal years 2014, 2013 and 2012, earnings from unconsolidated affiliates, net of losses, were decreased by $3.9 million, $3.9 million and $8.1 million, respectively, as a result of the impact of changes in foreign currency exchange rates on the results of our unconsolidated affiliates, primarily the impact of changes in the Brazilian real and U.S. dollar exchange rate on results for our affiliate in Brazil.
Derivative Financial Instruments — See Note 7 for a discussion of our accounting for derivative financial instruments.
Incentive Compensation — See Note 10 for a discussion of our accounting for incentive compensation arrangements.
Extinguishment of Debt — Extinguishment of debt includes $14.9 million in redemption premium and fees as a result of the early redemption of the 7 ½% Senior Notes due 2017 (“7 ½% Senior Notes”) during fiscal year 2013 as discussed in Note 5.
Other Income (Expense), Net — The amounts for fiscal years 2014, 2013 and 2012 include the foreign currency transaction gains and losses described under “Foreign Currency” above. Other income (expense), net in fiscal year 2014 also includes a gain of $1.1 million for the sale of intellectual property. Other income (expense), net in fiscal years 2013 and 2012 did not include any other significant items.
Recent Accounting Pronouncement
In February 2013, the Financial Accounting Standards Board (the “FASB”) issued accounting guidance on the presentation of reclassifications of items out of accumulated other comprehensive income. This guidance amends existing guidance by requiring that additional information be disclosed about items reclassified out of accumulated other comprehensive income. The additional information includes separately stating the total change for each component of other comprehensive income (for example unrealized gains or losses on available-for-sale securities or foreign currency items) and separately disclosing both current-period other comprehensive income and reclassification adjustments. Entities are also required to present, either on the face of the statement of income or in the notes to the financial statements, significant amounts reclassified out of accumulated other comprehensive income as separate line items of net income but only if the entire amount reclassified must be reclassified to net income in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity must cross-reference to other disclosures that provide additional detail about those amounts. This pronouncement was effective for interim and annual periods beginning after December 15, 2012. We adopted this pronouncement for our fiscal year 2014 beginning April 1, 2013, and it did not have an impact on our financial statements.
In July 2013, the FASB issued accounting guidance relating to the presentation of unrecognized tax benefits. The intent is to better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exist. This pronouncement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. We do not believe adoption of this new guidance will have a significant impact on our consolidated financial statements.

OPERATIONS_BASIS_OF_PRESENTATI1

OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (SAP)	12 Months Ended
	Mar. 31, 2014
Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]	'
Basis of presentation policy	'
	Basis of Presentation
	The consolidated financial statements include the accounts of Bristow Group Inc. and its consolidated entities after elimination of all significant intercompany accounts and transactions. Investments in affiliates in which we have a majority voting interest and entities that meet the criteria of Variable Interest Entities (“VIEs”) of which we are the primary beneficiary are consolidated. See discussion of VIEs in Note 3. We apply the equity method of accounting for investments in entities if we have the ability to exercise significant influence over an entity that (a) does not meet the variable interest entity criteria or (b) meets the variable interest entity criteria, but for which we are not deemed to be the primary beneficiary. We apply the cost method of accounting for investments in other entities if we do not have the ability to exercise significant influence over the unconsolidated affiliate. These investments in private companies are carried at cost and are adjusted only for capital distributions and other-than-temporary declines in value. Dividends from cost method investments are recognized in earnings from unconsolidated affiliates, net of losses, when received.
	Effective February 6, 2014, we began consolidating Eastern Airways International Limited (“Eastern Airways”). See Note 2 for further details.
	Our fiscal year ends March 31, and we refer to fiscal years based on the end of such period. Therefore, the fiscal year ended March 31, 2014 is referred to as fiscal year 2014.
	Certain reclassifications of prior period information have been made to conform to the presentation of the current period information. These reclassifications had no effect on net income as previously reported.
Use of estimates policy	'
	Use of Estimates — The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Areas where accounting estimates are made by management include:
	•	Allowances for doubtful accounts;
	•	Inventory allowances;
	•	Property and equipment;
	•	Goodwill, intangible and other long-lived assets;
	•	Pension benefits;
	•	Contingent liabilities; and
	•	Taxes.
Cash and cah equivalents policy	'
	Cash and Cash Equivalents — Our cash equivalents include funds invested in highly-liquid debt instruments with original maturities of 90 days or less.
Accounts receivable policy	'
	Accounts Receivable — Trade and other receivables are stated at net realizable value. We grant short-term credit to our clients, primarily major integrated, national and independent oil and gas companies. We establish allowances for doubtful accounts on a case-by-case basis when a determination is made that the required payment is unlikely to occur. In establishing these allowances, we consider a number of factors, including our historical experience, change in our clients’ financial position and restrictions placed on the conversion of local currency into U.S. dollars, as well as disputes with clients regarding the application of contract provisions to our services.
Inventories policy	'
	Inventories — Inventories are stated at the lower of average cost or market value and consist primarily of spare parts.
Property and equipment policy	'
	Property and Equipment — Property and equipment are stated at cost. Property and equipment includes construction in progress, primarily consisting of progress payments on aircraft purchases and facility construction, of $477.9 million and $222.8 million as of March 31, 2014 and 2013, respectively. Interest costs applicable to the construction of qualifying assets are capitalized as a component of the cost of such assets.
	Depreciation and amortization are provided on the straight-line method over the estimated useful lives of the assets. The estimated useful lives of aircraft generally range from 5 to 15 years, and the residual value used in calculating depreciation of aircraft generally ranges from 30% to 50% of cost. The estimated useful lives for buildings on owned properties range from 15 to 40 years. Other depreciable assets are depreciated over estimated useful lives ranging from 3 to 15 years, except for leasehold improvements which are depreciated over the lesser of the useful life of the improvement or the lease term (including any period where we have options to renew if it is probable that we will renew the lease). The cost and related accumulated depreciation of assets sold or otherwise disposed of are removed from the accounts and the resulting gains or losses are included in gain (loss) on disposal of assets.
	We capitalize betterments and improvements to our aircraft and amortize such costs over the remaining useful lives of the aircraft. Betterments and improvements increase the life or utility of an aircraft.
Goodwill policy	'
	Goodwill — Goodwill is recorded when the cost of acquired businesses exceeds the fair value of the identifiable net assets acquired. Goodwill has an indefinite useful life and is not amortized, but is assessed for impairment annually as of March 31.
Other intangible assets policy	'
	Other Intangible Assets — Intangible assets with finite useful lives are amortized over their respective estimated useful lives to their estimated residual values.
Impairment of long-lived assets policy	'
	Impairment of Long-Lived Assets — Long-lived assets, such as property and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the carrying amount of an asset or asset group to be held and used exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset or asset group exceeds the fair value of the asset or asset group. Assets held for sale are classified as current assets on our consolidated balance sheets and recorded at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale (if any) are presented separately in the appropriate asset and liability sections of the consolidated balance sheets.
Impairment of 50% or less owned companies policy	'
	Impairment of Investments in Unconsolidated Affiliates — We perform regular reviews of each investee’s financial condition, the business outlook for its products and services, and its present and projected results and cash flows. When an investee has experienced consistent declines in financial performance or difficulties raising capital to continue operations, and when we expect the decline to be other-than-temporary, the investment is written down to fair value. Actual results may vary from estimates due to the uncertainty regarding the projected financial performance of investees, the severity and expected duration of declines in value, and the available liquidity in the capital markets to support the continuing operations of the investees in which we have investments.
Other assets policy	'
	Other Assets — In addition to the intangible assets discussed above, other assets primarily include debt issuance costs of $11.4 million and $11.2 million as of March 31, 2014 and 2013, respectively, which are being amortized over the life of the related debt, deferred tax assets of $17.6 million and $11.6 million as of March 31, 2014 and 2013, respectively, and contract acquisition costs of $15.2 million and $9.7 million as of March 31, 2014 and 2013, respectively, related to the 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.
Contingent liabilities policy	'
	Contingent Liabilities — We establish reserves for estimated loss contingencies when we believe a loss is probable and the amount of the loss can be reasonably estimated. Our contingent liability reserves relate primarily to potential tax assessments, litigation, personal injury claims and environmental liabilities. Income for each reporting period includes revisions to contingent liability reserves resulting from different facts or information which become known or circumstances which change and affect our previous assumptions with respect to the likelihood or amount of loss. Such revisions are based on information which becomes known or circumstances that change after the reporting date for the previous period through the reporting date of the current period. Reserves for contingent liabilities are based upon our assumptions and estimates regarding the probable outcome of the matter. Should the outcome differ from our assumptions and estimates or other events result in a material adjustment to the accrued estimated reserves, revisions to the estimated reserves for contingent liabilities would be required to be recognized.
	Proceeds from casualty insurance settlements in excess of the carrying value of damaged assets are recognized in gain (loss) on disposal of assets when we have received proof of loss documentation or are otherwise assured of collection of these amounts.
Revenue recognition policy	'
	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 has occurred or 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 consolidated statements of income.
	Bristow Academy 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 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 in a forward sales account within deferred income until recognized as revenue in accordance with the above policy.
Maintenance and repairs policy	'
	Maintenance and Repairs — We generally charge maintenance and repair costs, including major aircraft component overhaul costs, to earnings as the costs are incurred. However, certain major aircraft components, such as engines and transmissions, are maintained by third-party vendors under contractual agreements. Under these agreements, we are charged an agreed amount per hour of flying time related to maintenance, repair and overhaul of the parts and components covered. The costs charged under these contractual agreements are recognized in the period in which the flight hours occur. To the extent that we have not yet been billed for costs incurred under these arrangements, these costs are included in accrued maintenance and repairs on our consolidated balance sheets. From time to time, we receive credits from our original equipment manufacturers as settlement for additional labor and maintenance expense costs incurred for aircraft performance issues. We record these credits as a reduction in maintenance expense when the credits are utilized in lieu of cash payments for purchases or services. The cost of certain major overhauls on fixed-wing aircraft operated by Eastern Airways are capitalized when incurred and depreciated over the period until the next expected major overhaul.
Taxes policy	'
	Taxes — We follow the liability method of accounting for income taxes. Under this method, deferred income tax assets and liabilities are determined based upon temporary differences between the carrying amount and tax basis of our assets and liabilities and measured using enacted tax rates and laws that will be in effect when the differences are expected to reverse. The effect on deferred income tax assets and liabilities of a change in the tax rates is recognized in income in the period in which the change occurs. We record a valuation reserve when we believe that it is more likely than not that any deferred income tax asset created will not be realized.
	In assessing the realizability of deferred income tax assets, management considers whether it is more likely than not that some portion or all of the deferred income tax assets will not be realized. The ultimate realization of deferred income tax assets is dependent upon the generation of future taxable income during the periods in which such temporary differences become deductible.
Tax uncertainties policy	'
	We recognize tax benefits attributable to uncertain tax positions when it is more-likely-than-not that a tax position will be sustained upon examination by the authorities. The benefit from a position that has surpassed the more-likely-than-not threshold is the largest amount of benefit that is more than 50% likely to be realized upon settlement. We recognize interest and penalties accrued related to unrecognized tax benefits as a component of provision for income taxes.
Foreign currency policy	'
	Foreign Currency — In preparing our financial statements, we must convert all non-U.S. dollar currencies to U.S. dollars. Balance sheet information is presented based on the exchange rate as of the balance sheet date, and statement of income information is presented based on the average exchange rate for the period. The various components of stockholders’ investment are presented at their historical average exchange rates. The resulting difference after applying the different exchange rates is the currency translation adjustment. Foreign currency transaction gains and losses are recorded in other income (expense), net and result from the effect of changes in exchange rates on transactions denominated in currencies other than a company’s functional currency, including transactions between consolidated companies. An exception is made where an intercompany loan or advance is deemed to be of a long-term investment nature, in which instance foreign currency transaction gains or losses are included as currency translation adjustments and are reported in stockholders’ investment as accumulated other comprehensive gains or losses. Changes in exchange rates could cause significant changes in our financial position and results of operations in the future.

ACQUISITIONS

ACQUISITIONS	12 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
ACQUISITIONS AND DISPOSITIONS	'
	Note 2 — ACQUISITION
	On February 6, 2014, Bristow Helicopters Limited (“Bristow Helicopters”) acquired a 60% interest in the privately owned Eastern Airways for cash of £27 million ($44 million) with possible earn out consideration of up to £6 million ($10 million) to be paid over a three year period based on the achievement of specified financial performance thresholds. In addition, Bristow Helicopters entered into agreements with the other stockholders of Eastern Airways that grant Bristow Helicopters the right to buy all of their Eastern Airways shares (and grant them the right after seven years to require Bristow Helicopters to buy all of their shares) and include transfer restrictions and other customary provisions. Eastern Airways is a regional fixed wing operator based at Humberside Airport located in North Lincolnshire, England with both charter and scheduled services targeting U.K. oil and gas industry transport. We believe this investment will strengthen Bristow Helicopters’ ability to provide a complete suite of point to point transportation services for existing European based passengers, expand helicopter services in certain areas like the Shetland Islands and create a more integrated logistics solution for global clients.
	The following table summarizes the consolidated assets and liabilities of Eastern Airways as of February 6, 2014 (in thousands):
	Current assets		$	21,117
	Property and equipment		63,391
	Goodwill		26,479
	Prepaid expenses and other assets		20,474
	Total assets		131,461
	Current liabilities, including debt		(37,644		)
	Long-term debt, less current maturities		(20,400		)
	Other long-term liabilities		(8,239		)
	Total liabilities		(66,283		)
	Temporary equity		(21,139		)
	Net assets		$	44,039
	Eastern Airways contributed $21.2 million of operating revenue during fiscal year 2014 and is included in our Europe business unit. The earn-out consideration will be included as general and administrative expense in our consolidated statements of income as earned.
	We apply the provisions of Accounting Standards Codification 805, Business Combinations (“ASC 805”), in the accounting for our business acquisitions. ASC 805 requires companies to separately recognize goodwill from the assets acquired and liabilities assumed, which are at their acquisition date fair values. Goodwill as of the acquisition date represents the excess of the purchase price over the fair values of the assets acquired and the liabilities assumed. We recognized $26.5 million of goodwill as a result of the acquisition. The goodwill recorded as part of this acquisition primarily reflects the value of offering a complete suite of point to point transportation services for our clients, synergies expected to arise from the combined entities, as well as any intangible assets that do not qualify for separate recognition.
	We use significant estimates and assumptions, including fair value estimates, to determine fair value of assets acquired and liabilities assumed and, when applicable, the related useful lives of the acquired assets as of the business combination date. The fair value measurements were primarily based on significant inputs that are not observable in the market, other than certain financial assets and liabilities that were acquired or assumed in the acquisition. The market approach, which indicates value for a subject asset based on available market pricing for comparable assets, was utilized to estimate the fair value for certain of Eastern Airways’ land and buildings, aircraft and spare parts inventory. The market approach used includes prices and other relevant information generated by market transactions involving comparable assets, as well as pricing guides and other sources. We considered the current market for the assets, the maintenance condition of the assets and the expected proceeds from the sale of the assets, among other factors. As a result we have classified these assets in Level 3 in the fair value hierarchy. For those financial assets and liabilities which utilized observable inputs we have classified these amounts in Level 2.
	The income approach was primarily used to value intangible assets, including client relationships, certain internally used software, and the Eastern Airways trade name, as well as noncontrolling interest. The income approach indicates value for a subject asset based on the present value of cash flows projected to be generated by the asset. Projected cash flows are discounted at a required market rate of return that reflects the relative risk of achieving the cash flows and the time value of money. The fair values associated with these assets and liabilities have been classified in Level 3 in the fair value hierarchy.
	The cost approach, which estimates value by determining the current cost of replacing an asset with another of equivalent economic utility, was used, as appropriate, for certain assets for which the market and income approaches could not be applied due to the nature of the asset. The cost to replace a given asset reflects the estimated reproduction or replacement cost for the asset, less an allowance for loss in value due to depreciation. Assets valued using the cost approach have been classified in Level 3 in the fair value hierarchy.
	See Note 6 for additional description of the fair value measurement.
	Temporary equity represents the third-party noncontrolling interests in Eastern Airways. The third-party noncontrolling interest holders hold a written put option, which will allow them to sell their noncontrolling interest to Bristow Helicopters at any time after the end of the seventh year after acquisition. In addition to the written put option, Bristow Helicopters holds a perpetual call option to acquire the noncontrolling interest at any time. Under each of these alternatives, the exercise price will be based on a contractually defined multiple of cash flows formula (“Redemption Value”), which is not a fair value measurement, and is payable in cash. As the written put option is redeemable at the option of the noncontrolling interest holders, and not solely within Bristow Helicopters control, the noncontrolling interest in Eastern Airways is classified as temporary equity between the stockholders’ investment and liabilities sections of the consolidated balance sheets. The initial carrying amount of the noncontrolling interest is the fair value of the noncontrolling interest as of the acquisition date.
	The noncontrolling interest is adjusted each period for comprehensive income and dividends attributable to the noncontrolling interest and changes in Bristow Helicopters’ ownership interest in Eastern Airways, if any. An additional adjustment to the carrying value of the noncontrolling interest may be required if the Redemption Value exceeds the current carrying value. Changes in the carrying value of the noncontrolling interest related to a change in the Redemption Value will be recorded against permanent equity and will not affect net income. While there is no impact on net income, the redeemable noncontrolling interest will impact our calculation of earnings per share. Utilizing the two-class method, we will adjust the numerator of the earnings per share calculation to reflect the changes in the excess, if any, of the noncontrolling interest's Redemption Value over the greater of (1) the noncontrolling interest carrying amount or (2) the fair value of the noncontrolling interest on a quarterly basis.
	The following is a rollforward of the temporary equity related to Eastern Airways for the year ended March 31, 2014 (in thousands):
	Acquisition of Eastern Airways		$	21,139
	Noncontrolling interest expense		671
	Currency translation		473
	Balance – end of fiscal year		$	22,283
	The summary pro forma condensed consolidated financial information presented below for the fiscal years ended March 31, 2014 and 2013 give effect to the acquisition of Eastern Airways as if it had occurred at the beginning of the periods presented. The pro forma adjustments are based upon available information and certain assumptions that we believe are reasonable. The pro forma net income has been adjusted to reflect depreciation and amortization expense as if those adjustments had been applied on April 1, 2012. The summary pro forma condensed consolidated financial information is for informational purposes only and does not purport to represent what our consolidated results of operation actually would have been if the acquisition of Eastern Airways had occurred at any date, and such data does not purport to project our results of operations for any future period.
		Fiscal Year Ended March 31,
		2014				2013
		(in thousands)
		(unaudited)
	Gross revenue	$	1,761,390			$	1,625,832
	Net income	188,921				144,136

VARIABLE_INTEREST_ENTITIES_AND

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES	12 Months Ended
	Mar. 31, 2014
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]	'
VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES	'
	Note 3 — VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES
	VIEs
	A VIE is an entity that either (a) has insufficient equity to permit the entity to finance its activities without additional subordinated financial support or (b) 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 March 31, 2014, we had interests in three VIEs of which we are the primary beneficiary, which are described below, and had no interests in VIEs of which we are not the primary beneficiary.
	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. Bristow Aviation’s subsidiaries provide helicopter services to clients primarily in the U.K, Norway, Australia and Nigeria. 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 ($151.7 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 $1.3 billion as of March 31, 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, each 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% of the equity of Bristow Aviation is fixed under the terms of the call option, and we have reflected this amount on our consolidated balance sheets as noncontrolling interest.
	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 March 31, 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 consolidated statements of income, with a corresponding increase in noncontrolling interest on our consolidated balance sheets. Prepayments of the guaranteed return element of the call option are reflected as a reduction in noncontrolling interest on our 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.
	Changes in the balance for the noncontrolling interest associated with Bristow Aviation are as follows (in thousands):
		Fiscal Year Ended March 31,
		2014				2013				2012
	Balance – beginning of fiscal year	$	1,492			$	1,577			$	1,582
	Payments to noncontrolling interest shareholders	(57		)		(63		)		(63		)
	Noncontrolling interest expense	57				60				62
	Currency translation	153				(82		)		(4		)
	Balance – end of fiscal year	$	1,645			$	1,492			$	1,577
	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 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):
		March 31,
		2014				2013
	Assets
	Cash and cash equivalents	$	173,490			$	93,227
	Accounts receivable	311,641				240,861
	Inventories	94,288				100,115
	Prepaid expenses and other current assets	45,791				20,575
	Total current assets	625,210				454,778
	Investment in unconsolidated affiliates	1,414				9,092
	Property and equipment, net	217,969				157,066
	Goodwill	41,218				12,810
	Other assets	45,477				26,575
	Total assets	$	931,288			$	660,321
	Liabilities
	Accounts payable	$	182,892			$	128,591
	Accrued liabilities	1,405,401				1,214,209
	Deferred taxes	3,588				7,907
	Current maturities of long-term debt	9,664				448
	Total current liabilities	1,601,545				1,351,155
	Long-term debt, less current maturities	172,391				138,147
	Accrued pension liabilities	86,824				126,647
	Other liabilities and deferred credits	2,252				1,755
	Deferred taxes	13,062				—
	Temporary equity	22,283				—
	Total liabilities	$	1,898,357			$	1,617,704
		Fiscal Year Ended March 31,
		2014				2013				2012
	Revenue	$	1,324,483			$	1,161,988			$	1,044,060
	Operating income (loss)	49,061				58,587				(16,543		)
	Net income (loss) (1)	113,974				(115,281		)		(151,707		)
	_____________
	(1)	Includes a gain of $67.9 million, after tax, on the sale of the FB Entities as discussed under "Other Significant Affiliates — Unconsolidated — FB Entities" below.
	Bristow Helicopters Nigeria Ltd. — Bristow Helicopters Nigeria Ltd. (“BHNL”) is a joint venture in Nigeria in which Bristow Helicopters owns a 40% interest, unrelated local Nigerian partners together own a 39% interest, a Nigerian company owned 100% by Nigerian employees owns a 19% interest and an employee trust fund owns a remaining 2% interest as of March 31, 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 its 19% interest in BHNL in December 2013 with proceeds from a loan received from BGI Aviation Technical Services Nigeria Limited, a wholly-owned subsidiary of Bristow Aviation. We consolidate the employee-owned Nigerian entity under the accounting rules and eliminate the loan 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 in the tables 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 an interest of 50.17%. 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 of 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.
	Other Significant Affiliates — Consolidated
	In addition to the VIEs discussed above, we consolidate the less than 100% owned entities described below.
	Eastern Airways — See discussion in Note 2.
	Aviashelf Aviation Co. — Bristow Aviation has a 48.5% interest in Aviashelf Aviation Co. (“Aviashelf”), a Russian helicopter company. Additionally, we own 51% of two U.K. joint venture companies, Bristow Helicopters Leasing Ltd. and Sakhalin Bristow Air Services Ltd. These two U.K. companies lease aircraft to Aviashelf which holds the client contracts for our Russian operations. Aviashelf is consolidated based on the ability of certain consolidated subsidiaries of Bristow Aviation to control the vote on a majority of the shares of Aviashelf, rights to manage the day to day operations of the company which were granted under a shareholders’ agreement, and our ability to acquire an additional 8.5% interest in Aviashelf under a put/call option agreement.
	Other Significant Affiliates — Unconsolidated
	We have investments in other significant unconsolidated affiliates as described below.
	Cougar — In early October 2012, we purchased 40 newly issued Class B shares (the “Class B Shares”) in the capital of Cougar Helicopters Inc. (“Cougar”), the largest offshore energy and SAR helicopter service provider in Canada, and certain aircraft, facilities and inventory used by Cougar in its operations, for $250 million. $23.8 million had been previously paid for an aircraft and certain other advances, resulting in a net cash outlay of $226.2 million. Cougar’s operations are primarily focused on serving the offshore oil and gas industry off Canada’s Atlantic coast and in the Arctic. The operating assets purchased include eight Sikorsky S-92 large helicopters, inventory and helicopter passenger, maintenance and SAR facilities located in St. John’s, Newfoundland and Labrador and Halifax, Nova Scotia. The purchased aircraft and facilities are leased to Cougar on a long-term basis. The Class B Shares represent 25% of the voting power and 40% of the economic interests in Cougar. In addition to the $257.8 million initial cash consideration, which includes $7.8 million in transaction costs, the terms of the purchase agreement include a potential earn-out of $40 million payable over three years based on Cougar achieving certain agreed performance targets. During fiscal year 2014, the first year earn-out payment of $6.0 million was paid as Cougar achieved agreed performance targets. The fair value of the earn-out is $31.3 million and $35.6 million as of March 31, 2014 and 2013, respectively, and is included in other accrued liabilities and other liabilities and deferred credits on our consolidated balance sheet. The investment in Cougar is accounted for under the equity method. As of March 31, 2014 and 2013, the investment in Cougar was $61.6 million and $60.5 million, respectively, and is included on our consolidated balance sheet in investment in unconsolidated affiliates. Due to timing differences in our financial reporting requirements, we record our share of Cougar’s financial results in earnings from unconsolidated affiliates on a three-month delay.
	FB Entities — As of March 31, 2013, we owned a 50% interest in each of FBS Limited, FB Heliservices Limited and FB Leasing Limited, collectively referred to as the FB Entities, U.K. corporations which principally provide pilot training, maintenance and support services to the British military under a contract that runs through March 2016 with two possible one year extensions. On July 14, 2013, we sold our 50% interest in the FB Entities for £74.0 million, or approximately $112.2 million. We recorded a pre-tax gain on sale of unconsolidated affiliate of $103.9 million during fiscal year 2014 on our consolidated statements of income. The FB Entities were accounted for under the equity method prior to July 14, 2013.
Líder — We own a 42.5% economic interest in Líder Táxi Aéreo S.A. (“Líder”), the largest provider of helicopter and executive aviation services in Brazil. Líder’s fleet has 57 helicopters and 29 fixed wing aircraft (including owned and managed aircraft). Líder also leases 11 aircraft from us to provide helicopter services to its clients. Líder is accounted for under the equity method.
Líder, along with its direct and indirect subsidiaries, were parties to tax litigation involving a tax assessment for taxes calculated in 2005, 2006 and 2007, related to profits of its foreign subsidiaries.  Additionally, Líder received tax assessments for the period from 2008 through 2010 and expected to receive tax assessments for 2011 and 2012 related to the same tax issue. On October 9, 2013, a new law went into effect in Brazil, establishing amnesty conditions targeting companies that have tax liabilities under the tax laws in question similar to Líder. Under the amnesty, companies could settle any tax liabilities related to the profits of foreign subsidiaries incurred through December 31, 2012 by making payment in full for amounts levied or entering into an installment payment plan by November 29, 2013.  Acceptance of this amnesty offer would result in the complete forgiveness of any late payment penalties, other fines, interest and legal charges in the case of full payment and a partial reduction in late payment penalties, other fines, interest and legal charges relating to outstanding taxes levied that may be paid in an installment plan.  As a condition to accepting the amnesty offer, companies would withdraw from all administrative and judicial cases filed challenging the levying of the above-mentioned taxes.
In November 2013, under this amnesty law, Líder made a payment of 62.7 million Brazilian reais ($27.0 million) for the period from 2005 through 2012.  The total amount due for payment in full according to the amnesty law was 93.3 million Brazilian reais ($40.2 million), but was reduced by existing tax assets for prior tax losses of 30.6 million Brazilian reais ($13.2 million). As a result of this additional tax expense, our earnings from unconsolidated affiliates were reduced by $17.1 million during fiscal year 2014. In addition to the November 2013 tax assessment, Líder also recorded tax accruals in December 2013 for expected payments for 2013 for these same taxes on offshore earnings which further reduced our equity earnings in Líder by $2.2 million during fiscal year 2014. Additionally, during the three months ended March 31, 2014, we recorded an increase in our equity earnings in Líder by $1.7 million related to lower tax charges for Líder than accrued during the three months ended December 31, 2013.
We were indemnified by the other Líder shareholders for the portion of this tax assessed for the period prior to our investment in Líder in May 2009. The indemnity payment to us of $2.5 million was paid during the three months ended March 31, 2014 and resulted in an increase in earnings from unconsolidated affiliates during the three months ended March 31, 2014. The total impact on our earnings from unconsolidated affiliates during fiscal year 2014 related to these taxes for Líder was $13.6 million, net of the indemnity payment.
PAS — We have a 25% interest in Petroleum Air Services (“PAS”), an Egyptian corporation that provides helicopter and fixed wing transportation to the offshore energy industry in Egypt. Additionally, spare fixed wing capacity is chartered to tourism operators. PAS owns 45 aircraft. PAS is accounted for under the cost method as we are unable to exert significant influence over its operations.
Other — Historically, in addition to the expansion of our business through purchases of new and used aircraft, we have also established new joint ventures with local partners or purchased significant ownership interests in companies with ongoing helicopter operations, particularly in countries where we have no operations or our operations are limited in scope, and we continue to evaluate similar opportunities which could enhance our operations. Where we believe that it is probable that an equity method investment will result, the costs associated with such investment evaluations are deferred and included in investment in unconsolidated affiliates on the consolidated balance sheets. For each investment evaluated, an impairment of deferred costs is recognized in the period in which we determine that it is no longer probable an equity method investment will result. As of March 31, 2014 and 2013, we had no amounts in investment in unconsolidated affiliates in the process of being evaluated.
Our percentage ownership and investment balances for the unconsolidated affiliates are as follows:
	March 31,
	2014			2013			2014				2013
							(In thousands)
Cost Method:
PAS	25	%		25	%		$	6,286			$	6,286
Equity Method:
Cougar (1)	40	%		40	%		61,570				60,517
FB Entities (2)	—	%		50	%		—				8,569
Líder (1)	42.5	%		42.5	%		193,345				196,078
Other							1,414				673
Total							$	262,615			$	272,123
_____________
(1)	We had a 25% voting interest in Cougar and under 20% voting interest in Líder as of March 31, 2014 and 2013.
(2)	We sold our 50% interest in the FB entities in July 2013.
Earnings from unconsolidated affiliates were as follows (in thousands):
	Fiscal Year Ended March 31,
	2014				2013				2012
Dividends from entities accounted for under the cost method:
PAS	$	4,043			$	28			$	2,060
Other	—				—				337
	4,043				28				2,397
Earnings, net of losses, from entities accounted for under the equity method:
Cougar	1,053				(736		)		—
FB Entities	3,217				10,517				11,014
Líder	2,898				14,762				(3,280		)
Other	1,498				499				548
	8,666				25,042				8,282
Total	$	12,709			$	25,070			$	10,679
We received $10.3 million, $16.2 million and $14.1 million of dividends from our investments accounted for under the equity method for fiscal years 2014, 2013 and 2012, respectively.
A summary of combined financial information of our unconsolidated affiliates accounted for under the equity method is set forth below (in thousands):
	March 31,
	2014				2013
	(Unaudited)				(Unaudited)
Current assets	$	216,345			$	262,741
Non-current assets	440,470				553,562
Total assets	$	656,815			$	816,303
Current liabilities	$	171,604			$	197,121
Non-current liabilities	274,907				369,059
Equity	210,304				250,123
Total liabilities and equity	$	656,815			$	816,303
	Fiscal Year Ended March 31,
	2014				2013				2012
	(Unaudited)				(Unaudited)				(Unaudited)
Revenue	$	632,832			$	578,175			$	526,216
Gross profit	$	132,760			$	126,007			$	95,508
Net income	$	21,728			$	57,712			$	23,926

VARIABLE_INTEREST_ENTITIES_AND1

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (SAP)	12 Months Ended
	Mar. 31, 2014
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]	'
Variable interest entity policy	'
	A VIE is an entity that either (a) has insufficient equity to permit the entity to finance its activities without additional subordinated financial support or (b) 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.

PROPERTY_AND_EQUIPMENT

PROPERTY AND EQUIPMENT	12 Months Ended
	Mar. 31, 2013
Property, Plant and Equipment [Abstract]	'
PROPERTY AND EQUIPMENT	'
	Note 4 — PROPERTY AND EQUIPMENT AND ASSETS HELD FOR SALE
	Property and Equipment
	During fiscal years 2014, 2013 and 2012, we made capital expenditures as follows:
			Fiscal Year Ended March 31,
			2014			2013			2012
		Number of aircraft delivered:
		Medium	10			2			1
		Large	11			17			9
		Fixed Wing	—			—			1
		Total aircraft	21			19			11
		Capital expenditures (in thousands):
		Aircraft and related equipment (1)	$	563,724		$	504,329		$	304,484
		Other	64,889			67,096			21,936
		Total capital expenditures (2)	$	628,613		$	571,425		$	326,420
	_____________
	(1)	During fiscal years 2014, 2013 and 2012, respectively, we spent $529.4 million, $312.7 million and $260.6 million on construction in progress which primarily represents progress payments on aircraft to be delivered in future periods.
	(2)	During fiscal year 2013, we paid $190.9 million for aircraft and facilities used by Cougar.
	Additionally, the following tables present details on the aircraft sold or disposed of and impairments on assets held for sale:
			Fiscal Year Ended March 31,
			2014			2013			2012
			(In thousands, except for number of aircraft)
		Number of aircraft sold or disposed of (1)	46			27			38
		Proceeds from sale or disposal of assets (1)	$	289,951		$	314,847		$	239,843
		Gain (loss) from sale or disposal of assets (2)	$	6,092		$	3,708		$	(5,392	)
		Number of aircraft impaired	11			10			19
		Impairment charges on aircraft held for sale (3)	$	(6,814	)	$	(4,362	)	$	(26,278	)
	_____________
	(1)	During fiscal years 2014, 2013 and 2012, respectively, 14, 11 and 9 of these aircraft were leased back of which $246.4 million, $255.8 million and $171.2 million was received in proceeds.
	(2)	The disposal of aircraft in fiscal year 2012 included the disposal of nine AS332L large aircraft for $28.9 million, realizing a loss of $5.6 million. See discussion of impairment of held for sale AS332Ls under “Assets Held for Sale” below.
	(3)	Additionally, in fiscal year 2013 we recorded a gain related to four large aircraft reclassified from held for sale to aircraft and equipment as they were returned to operational status as a result of the issues associated with the Airbus Helicopters EC225 Super Puma helicopters discussed in Note 8 and reversed previously recorded impairment charges of $8.7 million.
	The following items impacted property and equipment during fiscal year 2014:
	•	In March 2014, we had a fire in our Port Harcourt, Nigeria aircraft hangar. Two aircraft were damaged and $11.1 million of inventory spare parts were destroyed. The aircraft hangar was partially damaged. We wrote off $11.1 million of inventory destroyed in the fire, which was offset by a receivable recorded of $11.1 million for insurance proceeds.
	•	We received payment of approximately $106.1 million for progress payments we had previously 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 payments made by the purchaser during fiscal year 2014 totaling $60.2 million, with a corresponding increase to construction in progress. See Note 1 for further details on the deferred sale leaseback advance.
	•	We transferred 36 aircraft to held for sale, reducing property and equipment by $51.6 million.
	The following items impacted property and equipment during fiscal year 2013:
	•	We received proceeds from insurance recoveries of $4.7 million, recording a gain of $2.8 million in gain (loss) on disposal of assets on our consolidated statement of income and included in the table above.
	•	We transferred 16 aircraft to held for sale, reducing property and equipment by $13.9 million.
	The following items impacted property and equipment during fiscal year 2012:
	•	We recorded an impairment charge of $2.7 million related to two medium aircraft our management intends to sell prior to the previously estimated life of the aircraft. This impairment charge is included in depreciation and amortization expense on the consolidated statement of income.
	•	We recorded an impairment charge of $2.7 million resulting from the abandonment of certain assets located in Creole, Louisiana and used in our U.S. Gulf of Mexico operations as we ceased operations from that location. This impairment charge is included in depreciation and amortization expense on the consolidated statement of income.
	•	We recorded a $1.1 million loss on the disposal of one fixed wing aircraft previously operating in Nigeria that was damaged in an incident upon landing. The aircraft was insured, but subject to self-insured retention and loss sensitive factors. The $1.1 million loss is included as a reduction in gain (loss) on disposal of assets on our consolidated statement of income.
	•	We transferred 21 aircraft to held for sale, reducing property and equipment by $30.2 million.
	Assets Held for Sale
	As of March 31, 2014 and 2013, respectively, we had 16 and 7 aircraft, totaling $29.3 million and $8.3 million classified as held for sale. We recorded impairment charges of $6.8 million, $4.4 million and $26.3 million to reduce the carrying value of 11, 10 and 19 aircraft held for sale during fiscal years 2014, 2013 and 2012, respectively. These impairment charges are included as a reduction in gain (loss) on disposal of assets in the consolidated statements of income.
	The impairment charges recorded in fiscal year 2012 include a charge of $23.3 million related to two AS332Ls included as part of the sale of the AS332Ls discussed under “Property and Equipment” above, but where title did not transfer prior to March 31, 2012, and five other AS332Ls held for sale. This impairment was triggered as a result of losses realized on the sale of similar aircraft in fiscal year 2012.

DEBT

DEBT	12 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
DEBT	'
	Note 5 — DEBT
	Debt as of March 31, 2014 and 2013 consisted of the following (in thousands):
		March 31,
		2014			2013
	6 ¼% Senior Notes due 2022	$	450,000		$	450,000
	Term Loan	226,604			230,625
	3% Convertible Senior Notes due 2038, including $5.1 million and $8.8 million of unamortized discount, respectively	109,904			106,196
	Revolving Credit Facility	24,000			—
	Eastern Airways debt	29,911			—
	Other debt	883			448
	Total debt	841,302			787,269
	Less short-term borrowings and current maturities of long-term debt	(14,207		)	(22,323		)
	Total long-term debt	$	827,095		$	764,946
	6 ¼% Senior Notes due 2022 — On October 12, 2012, we completed an offering of $450 million of 6 ¼% Senior Notes due 2022 (the “6 ¼% Senior Notes”). The 6 ¼% Senior Notes are unsecured senior obligations and rank effectively junior in right of payment to all our existing and future secured indebtedness, rank equal in right of payment with our existing and future senior unsecured indebtedness and rank senior in right of payment to any of our existing and future subordinated indebtedness. The 6 ¼% Senior Notes are jointly and severally guaranteed on a senior unsecured basis by certain of our U.S. subsidiaries (the “Guarantor Subsidiaries”). The indenture for the 6 ¼% Senior Notes includes restrictive covenants which limit, among other things, our ability to incur additional debt, issue disqualified stock, pay dividends, repurchase stock, invest in other entities, sell assets, incur additional liens or security, merge or consolidate the Company and enter into transactions with affiliates. Interest on the 6 ¼% Senior Notes is payable on April 15 and October 15 of each year, beginning April 15, 2013, and the 6 ¼% Senior Notes mature on October 15, 2022. We may redeem any of the 6 ¼% Senior Notes at any time on or after October 15, 2017, in whole or part, in cash, at certain redemption prices plus accrued and unpaid interest, if any, to the date of redemption. At any time prior to October 15, 2015, we may redeem up to 35% of the aggregate principal amount of the 6 ¼% Senior Notes issued under the indenture with the net proceeds of certain equity offerings at a redemption price equal to 106.25% of the principal amount of the 6 ¼% Senior Notes plus accrued and unpaid interest, if any, to the date of redemption. We may make that redemption only if, after the redemption, at least 65% of the aggregate principal amount of the 6 ¼% Senior Notes issued under the indenture remains outstanding. In addition, at any time prior to October 15, 2017, we may redeem all, but not less than all, of the 6 ¼% Senior Notes at a redemption price equal to the principal amount plus an applicable premium and accrued and unpaid interest, if any, to the redemption date. We incurred financing fees of $7.4 million, that are included as deferred financing fees in other assets in the consolidated balance sheets which we will amortize as interest expense in the consolidated statements of income over the life of the 6 ¼% Senior Notes.
	In April and May 2014, we redeemed $11.3 million of the 6 ¼% Senior Notes at 107.75% plus accrued interest for a total of $12.2 million.
	Revolving Credit Facility and Term Loan — On November 22, 2010, we entered into a $375 million amended and restated revolving credit and term loan agreement (“Amended and Restated Credit Agreement”), which included a five-year, $175 million revolving credit facility (with a subfacility of $30 million for letters of credit) (“Revolving Credit Facility”) and a five-year, $200 million term loan (“Term Loan”) (together, our “Credit Facilities”). Proceeds from the Term Loan and the borrowings under the Revolving Credit Facility were used primarily to redeem the 6 1/8% Senior Notes due 2013 during fiscal year 2011.
	On December 22, 2011, we entered into the first amendment to the Amended and Restated Credit Agreement (the “First Amendment”). The First Amendment (a) increased the commitments under the Revolving Credit Facility from $175 million to $200 million, (b) increased our Term Loan borrowings from $200 million to $250 million, (c) extended the maturity date of the Revolving Credit Facility and Term Loan from November 2015 to December 2016 and (d) reduced the applicable margins and commitment fees with respect to the Revolving Credit Facility and Term Loan. Proceeds from the $50 million increase of the Term Loan were used to pay off other borrowings at higher interest rates and for general corporate purposes. Borrowings under the Term Loan are payable in quarterly installments and commenced on December 30, 2011, with $133.8 million due in December 2016.
	As amended by the First Amendment, borrowings under the Revolving Credit Facility bear interest at an interest rate equal to, at our option, either the Base Rate or LIBOR (or EURIBO, in the case of Euro-denominated borrowings) plus the applicable margin. “Base Rate” means the higher of (1) the prime rate and (2) the Federal Funds rate plus 0.50% per annum. The applicable margin for borrowings ranges from 0.00% to 2.25%, depending on whether the Base Rate or LIBOR is used, and is determined based on our leverage ratio pricing grid. In addition, we are required to pay fees on the daily unused amount of the Revolving Credit Facility in an amount per annum equal to an applicable percentage, which ranges from 0.25% to 0.50% and is determined based on our leverage ratio pricing grid. Fees owed on the letters of credit issued under the Revolving Credit Facility are equal to the applicable margin for LIBOR borrowings. The interest rate was 1.91% and 2.21% as of March 31, 2014 and 2013, respectively.
	Obligations under the Amended and Restated Credit Agreement are guaranteed by the Guarantor Subsidiaries and secured by the U.S. cash and cash equivalents, accounts receivable, inventories, non-aircraft equipment, prepaid expenses and other current assets, intangible assets and intercompany promissory notes held by Bristow Group Inc. and the Guarantor Subsidiaries, and 100% and 65% of the capital stock of certain of our principal domestic and foreign subsidiaries, respectively. In addition, the Amended and Restated Credit Agreement includes customary covenants, including certain financial covenants and restrictions on our ability to enter into certain transactions, including those that could result in the incurrence of additional indebtedness and liens; the making of loans, guarantees or investments; sale of assets; payments of dividends or repurchases of our capital stock; and entering into transactions with affiliates.
	Simultaneously with the closing of the 364-Day Credit Agreement described below, we entered into the second amendment to our Amended and Restated Credit Agreement, dated as of October 1, 2012 (the “Second Amendment”).
	The Second Amendment amended the Amended and Restated Credit Agreement in order to, among other things, permit the granting of liens by the Company and the Guarantors subsidiaries in favor of the lenders under the 364-Day Credit Agreement on a pari passu secured basis with the liens granted in favor of the lenders under the Amended and Restated Credit Agreement.
	On April 29, 2013, we entered into the third amendment to the Amended and Restated Credit Agreement (the “Third Amendment”). The Third Amendment (a) increased the commitments under the Revolving Credit Facility from $200 million to $350 million and (b) extended the maturity date of the Revolving Credit Facility and the Term Loan from December 2016 to April 2018.
	On March 14, 2014, we entered into the fourth amendment to the Amended and Restated Credit Agreement (the “Fourth Amendment”). The Fourth Amendment, among other things, extended the maturity date of the Revolving Credit Facility and the Term Loan from April 2018 to April 2019.
	During fiscal year 2014, we had borrowings of $528.6 million and made payments of $504.6 million under the Revolving Credit Facility. Additionally, we paid $3.5 million to reduce our borrowings under the Term Loan. As of March 31, 2014, we had $0.5 million in letters of credit outstanding.
	3% Convertible Senior Notes due 2038 — In June 2008, we completed the sale of $115 million of 3% Convertible Senior Notes due 2038 (the “3% Convertible Senior Notes”). These notes are unsecured senior obligations and rank effectively junior in right of payment to our existing and future secured indebtedness, rank equal in right of payment to all of our existing and future unsecured senior debt and rank senior in right of payment to any of our existing and future subordinated indebtedness. The 3% Convertible Senior Notes are guaranteed by the Guarantor Subsidiaries. Interest is paid on the 3% Convertible Senior Notes on June 15 and December 15 of each year. The notes are convertible, under certain circumstances, using a net share settlement process, into a combination of cash and our common stock (“Common Stock”). As of March 31, 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.
	The notes will mature on June 15, 2038 and may not be redeemed by us prior to June 15, 2015, after which they may be redeemed at 100% of principal amount plus accrued and unpaid interest. Holders of the 3% Convertible Senior Notes may require us to repurchase any or all of their notes for cash on June 15, 2015, 2020, 2025, 2030 and 2035, or in the event of a fundamental change, as defined in the indenture for the 3% Convertible Senior Notes (including the delisting of our Common Stock and certain change of control transactions), at a price equal to 100% of the principal amount plus accrued and unpaid interest. If a holder elects to convert its notes in connection with certain fundamental changes occurring prior to June 15, 2015, we will increase the applicable conversion rate by a specified number of additional shares of Common Stock. As of March 31, 2014, the if-converted value of the 3% Convertible Senior Notes did not exceed the principal balance.
	Accounting standards require that convertible debt instruments which may be settled in cash upon conversion (including partial cash settlement) be accounted for with a liability component based on the fair value of a similar nonconvertible debt instrument and an equity component based on the excess of the initial proceeds from the convertible debt instrument over the liability component. Such excess represents proceeds related to the conversion option and are recorded as additional paid-in capital. The liability is recorded at a discount, which is then amortized as additional non-cash interest expense over the convertible debt instrument’s remaining life to the first put date. The balances of the debt and equity components as of each period presented are as follows (in thousands):
		March 31,			March 31,
		2014			2013
	Equity component – net carrying value	$	14,905		$	14,905
	Debt component:
	Face amount due at maturity	$	115,000		$	115,000
	Unamortized discount	(5,096		)	(8,804		)
	Debt component – net carrying value	$	109,904		$	106,196
	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 each of fiscal years 2014, 2013 and 2012 was 6.9%. Interest expense related to our 3% Convertible Senior Notes was as follows (in thousands):
		Fiscal Year Ended
		March  31,
		2014			2013			2012
	Contractual coupon interest	$	3,450		$	3,450		$	3,450
	Amortization of debt discount	3,708			3,597			3,380
	Total interest expense	$	7,158		$	7,047		$	6,830
	Eastern Airways — In February 2014, we acquired a 60% interest in Eastern Airways as discussed in Note 2. Eastern Airways’ outstanding debt includes interest bearing term loans and borrowings of $29.9 million as of March 31, 2014. The borrowings primarily relate to purchases of aircraft and inventory and have a term of 2 to 10 years and bear interest at LIBOR plus a margin of 2.5% to 3.5%. The interest rate on the term loans was between 3.6% and 5.0% (including LIBOR) as of March 31, 2014 with either monthly or quarterly principal payments. The term loans have customary covenants, including certain financial covenants.
	7 ½% Senior Notes due 2017 — On June 13 and November 13, 2007, we completed offerings totaling $350 million of 7 ½% Senior Notes due 2017 (the “7 ½% Senior Notes”). $50 million of the 7 ½% Senior Notes were issued for a premium of $0.6 million, which was being amortized over the life of the notes as a reduction of interest expense.
	On September 25, 2012, we commenced a cash tender offer (the “Tender Offer”) for any and all of the $350 million outstanding principal amount of the 7 ½% Senior Notes. Pursuant to the Tender Offer, we offered to purchase for cash any and all of such 7 ½% Senior Notes validly tendered on or prior to the expiration date of the Tender Offer for tender offer consideration of up to $1,041.50 per $1,000 principal amount as provided in the terms of the Tender Offer. In connection with the Tender Offer, we were also seeking consents to eliminate substantially all of the restrictive covenants included in the 7 ½% Senior Notes indenture. The aggregate consideration paid to repurchase $338.1 million face amount of the outstanding 7 ½% Senior Notes in the Tender Offer was approximately $352.0 million. Additionally, on November 30, 2012, we redeemed all $11.9 million of the remaining outstanding 7 ½% Senior Notes at a redemption premium of 1.0375%. As a result of the tender and redemption completed during fiscal year 2013, we incurred $14.9 million in premium and fees, which is included as extinguishment of debt on our consolidated statement of income, and we wrote-off $2.6 million of unamortized deferred financing fees, which is included in interest expense on our consolidated statement of income.
	364-Day Term Loan Credit Facility — On October 1, 2012, we entered into a senior secured 364-day term loan credit agreement (the “364-Day Credit Agreement”) which provided for a $225 million term loan (the “364-Day Term Loan”). Proceeds from the 364-Day Term Loan were used to finance the purchase of the Class B Shares of Cougar and certain aircraft, facilities and inventory used by Cougar in its operations. See Note 3 for further discussion.
	The 364-Day Term Loan bore interest at a rate equal to, at our option, either the Base Rate or LIBOR plus, in each case, an applicable margin. “Base Rate” means the higher of (1) the per annum rate the administrative agent publicly announces as its prime lending rate in effect from time to time and (2) the Federal Funds rate plus 0.50% per annum. The applicable margin ranged from 0.00% to 2.25%, depending on whether the Base Rate or LIBOR was used, and was determined based on our leverage ratio pricing grid. The 364-Day Term Loan was scheduled to mature on September 30, 2013.
	In connection with the 364-Day Credit Agreement, we incurred financing fees of $2.9 million. During fiscal year 2013, we made payments of $225.0 million to repay the entire balance of our 364-Day Term Loan. Due to the early payments made on the 364-Day Term Loan, we wrote-off $2.1 million of unamortized deferred financing fees, which is included in interest expense on our consolidated statement of income.
	Other Debt — During fiscal year 2013, Aviashelf borrowed $0.5 million from a commercial bank on a line of credit. During fiscal year 2014, Aviashelf borrowed $3.6 million against the line of credit and made payments of $3.1 million. As of March 31, 2014, the interest rate for the line of credit was 11.8%.
	Other Matters — Aggregate annual maturities (which excludes unamortized discount of $5.1 million) for all debt for the next five fiscal years and thereafter are as follows (in thousands):
	Fiscal year ending March 31
	2015	$	14,207
	2016	16,721
	2017	25,176
	2018	26,623
	2019	30,191
	Thereafter	734,042
		$	846,960
	Interest paid in fiscal years 2014, 2013 and 2012 was $38.4 million, $25.9 million and $37.8 million, respectively. Capitalized interest was $14.1 million, $6.6 million and $5.0 million in fiscal years 2014, 2013 and 2012, respectively.

FAIR_VALUE_DISCLOSURES

FAIR VALUE DISCLOSURES	12 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
FAIR VALUE DISCLOSURES	'
	Note 6 — 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 reflect quoted prices for identical assets or liabilities in markets that 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 our 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, 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 as its fair value.
	See Note 2 for details on the fair values related to the Eastern Airways acquisition.
	The following table summarizes the assets as of March 31, 2014, which are valued at fair value on a non-recurring basis (in thousands):
		Quoted Prices			Significant		Significant		Balance as of March 31, 2014		Total Loss for
		in Active			Other		Unobservable				Fiscal Year
		Markets for			Observable		Inputs				2014
		Identical			Inputs		(Level 3)
		Assets			(Level 2)
		(Level 1)
	Inventories	$	—		$	50,505	$	—	$	50,505	$	(12,669	)
	Assets held for sale	—			16,050		—		16,050		(6,814		)
	Total assets	$	—		$	66,555	$	—	$	66,555	$	(19,483	)
	The following table summarizes the assets as of March 31, 2013, which are valued at fair value on a non-recurring basis (in thousands):
		Quoted Prices			Significant		Significant		Balance as of		Total Gain
		in Active			Other		Unobservable		March 31, 2013		(Loss) for
		Markets for			Observable		Inputs				Fiscal Year
		Identical			Inputs		(Level 3)				2013
		Assets			(Level 2)
		(Level 1)
	Aircraft and equipment	$	—		$	14,385	$	—	$	14,385	$	8,722
	Assets held for sale	—			1,600		—		1,600		(4,362		)
	Total assets	$	—		$	15,985	$	—	$	15,985	$	4,360
	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. See Note 1 for further discussion of the impairment of inventories. The $6.8 million loss on assets held for sale for fiscal year 2014 related to 11 aircraft and the $4.4 million loss on assets held for sale for fiscal year 2013 related to 10 aircraft.
	The $8.7 million gain in aircraft and equipment for fiscal year 2013 related to four large AS332L aircraft reclassified from held for sale to aircraft and equipment where we reversed previously recorded impairment charges. The fair value of these aircraft 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.
	Recurring Fair Value Measurements
	The following table summarizes the financial instruments we had as of March 31, 2014, which are valued at fair value on a recurring basis (in thousands):
		Quoted Prices			Significant		Significant		Balance as of March 31, 2014		Balance Sheet
		in Active			Other		Unobservable				Classification
		Markets for			Observable		Inputs
		Identical			Inputs		(Level 3)
		Assets			(Level 2)
		(Level 1)
	Rabbi Trust investments	$	6,599		$	—	$	—	$	—	Other assets
	Total assets	$	6,599		$	—	$	—	$	—
	Contingent consideration (1)	$	—		$	—	$	31,322	$	31,322	Other liabilities
											and deferred credits
	Total liabilities	$	—		$	—	$	31,322	$	31,322
	_____________
	(1)	Relates to our investment in Cougar (see Note 3).
	The following table summarizes the financial instruments we had as of March 31, 2013, which are 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, 2013		Classification
		Markets for			Observable		Inputs
		Identical			Inputs		(Level 3)
		Assets			(Level 2)
		(Level 1)
	Rabbi Trust investments	$	4,837		$	—	$	—	$	4,837	Other assets
	Total assets	$	4,837		$	—	$	—	$	4,837
	Contingent consideration (1)	$	—		$	—	$	35,625	$	35,625	Other liabilities
											and deferred credits
	Total liabilities	$	—		$	—	$	35,625	$	35,625
	_____________
	-1	Relates to an investment in Cougar (see Note 3).
	The rabbi trust investments consist of cash and mutual funds whose fair value is 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 as discussed in Note 10.
	The following table provides a rollforward of the contingent consideration liability Level 3 fair value measurements during fiscal year 2014 (in thousands):
		Significant
		Unobservable
Inputs (Level 3)
Contingent consideration:
Balance as of March 31, 2013	$	35,625
Change in fair value of contingent consideration	1,697
Payment of Cougar first year earn-out	(6,000		)
Balance as of March 31, 2014	$	31,322
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 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 March 31, 2014 and 2013, the discount rate approximated 4% for the contingent consideration related to Cougar.
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):
	March 31,
	2014					2013
	Carrying			Fair Value		Carrying		Fair Value
	Value					Value
6 ¼% Senior Notes	$	450,000		$	477,000	$	450,000	$	484,875
Term Loan	226,604			226,604		230,625		230,625
3% Convertible Senior Notes	109,904			142,382		106,196		131,819
Revolving Credit Facility	24,000			24,000		—		—
Eastern Airways debt	29,911			29,911		—		—
Other debt	883			883		448		448
	$	841,302		$	900,780	$	787,269	$	847,767
Other
The fair values of our cash and cash equivalents, accounts receivable and accounts payable approximate their carrying value due to the short-term nature of these items.

FAIR_VALUE_DISCLOSURES_SAP

FAIR VALUE DISCLOSURES (SAP)	12 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair value of financial instruments policy	'
	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 reflect quoted prices for identical assets or liabilities in markets that 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 our 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.

DERIVATIVE_FINANCIAL_INSTRUMEN

DERIVATIVE FINANCIAL INSTRUMENTS	12 Months Ended
	Mar. 31, 2014
Summary of Derivative Instruments [Abstract]	'
DERIVATIVE FINANCIAL INSTRUMENTS	'
	NOTE 7 — DERIVATIVE FINANCIAL INSTRUMENTS
	From time to time we enter into forward exchange contracts as a hedge against foreign currency asset and liability commitments and anticipated transaction exposures, including intercompany purchases. All derivatives are recognized as assets or liabilities and measured at fair value. Derivatives that are not determined to be effective hedges are adjusted to fair value with a corresponding effect on earnings. We do not use financial instruments for trading or speculative purposes.
	The designation of a derivative instrument as a hedge and its ability to meet relevant hedge accounting criteria determines how the change in fair value of the derivative instrument will be reflected in the consolidated financial statements. A derivative qualifies for hedge accounting if, at inception, the derivative is expected to be highly effective in offsetting the hedge’s underlying cash flows or fair value and the documentation requirements of the accounting standard for derivative instruments and hedging activities are fulfilled at the time we enter into the derivative contract. A hedge is designated as a cash flow hedge, fair value hedge, or a net investment in foreign operations hedge based on the exposure being hedged. The asset or liability value of the derivative will change in tandem with its fair value. Changes in fair value, for the effective portion of qualifying hedges, are recorded in accumulated other comprehensive loss. The derivative’s gain or loss is released from accumulated other comprehensive loss to match the timing of the effect on earnings of the hedge’s underlying cash flows.
	We review the effectiveness of our hedging instruments on a quarterly basis. We recognize current period hedge ineffectiveness immediately in earnings, and we discontinue hedge accounting for any hedge that we no longer consider to be highly effective. Changes in fair value for derivatives not designated as hedges or those not qualifying for hedge accounting are recognized in current period earnings. Upon termination of cash flow hedges, we release gains and losses from accumulated other comprehensive loss based on the timing of the underlying cash flows, unless the termination results from the failure of the intended transaction to occur in the expected timeframe. Such an untimely occurrence requires us to immediately recognize in earnings gains and losses previously recorded in accumulated other comprehensive loss.
	None of our derivative instruments contain credit-risk-related contingent features. Counterparties to our derivative contracts are high credit quality financial institutions.
	We entered into forward contracts during fiscal years 2012 and 2011 to mitigate our exposure to exchange rate fluctuations on our euro-denominated aircraft purchase commitments, which were designated as cash flow hedges for accounting purposes. We had no open forward contracts relating to euro-denominated aircraft purchase commitments as of March 31, 2014 and 2013. We had six open forward contracts as of March 31, 2011, which had rates ranging from 1.3153 U.S. dollars per euro to 1.3267 U.S. dollars per euro. These contracts had an underlying notional value of between €5,000,000 and €7,000,000, for a total of €34,300,871, with the first contract having expired in May 2011 and the last in June 2011. During the three months ended June 30, 2011, we entered into an additional open forward contract at a rate of 1.418 U.S. dollars per euro with an underlying notional value of €13,826,241 that expired in July 2011. As of March 31, 2011, an unrecognized gain on these contracts of $2.2 million, net of tax, was included as a component of accumulated other comprehensive loss. No gains or losses relating to forward contracts were recognized in our consolidated statements of income for fiscal years 2014, 2013 and 2012.
	Information on the location and amounts of derivative gains and losses on the consolidated balance sheet and the consolidated statement of income as of and for fiscal year 2012 is as follows (in thousands):
	Derivatives in Cash Flow	Amount of			Location of Gain (Loss)	Amount of		Location of Gain (Loss)	Amount of
	Hedging Relationships	Gain (Loss)			Reclassified from	Gain (Loss)		Recognized in Income on	Gain (Loss)
		Recognized in			Accumulated OCI into	Reclassified		Derivative (Ineffective	Recognized in
		Other			Income (Effective	from		Portion and Amount	Income on
		Comprehensive			Portion)	Accumulated		Excluded from	Derivative
		Income				OCI into		Effectiveness Testing)	(Ineffective
		(“OCI”) on				Income			Portion and
		Derivative				(Effective			Amount
		(Effective				Portion)			Excluded from
		Portion)							Effectiveness
									Testing)
	Foreign currency forward contracts	$	(2,150	)	Other income (expense), net	$	—	Other income (expense), net	$	—
		$	(2,150	)		$	—		$	—

DERIVATIVE_FINANCIAL_INSTRUMEN1

DERIVATIVE FINANCIAL INSTRUMENTS (SAP)	12 Months Ended
	Mar. 31, 2014
Summary of Derivative Instruments [Abstract]	'
Derivatives policy	'
	The designation of a derivative instrument as a hedge and its ability to meet relevant hedge accounting criteria determines how the change in fair value of the derivative instrument will be reflected in the consolidated financial statements. A derivative qualifies for hedge accounting if, at inception, the derivative is expected to be highly effective in offsetting the hedge’s underlying cash flows or fair value and the documentation requirements of the accounting standard for derivative instruments and hedging activities are fulfilled at the time we enter into the derivative contract. A hedge is designated as a cash flow hedge, fair value hedge, or a net investment in foreign operations hedge based on the exposure being hedged. The asset or liability value of the derivative will change in tandem with its fair value. Changes in fair value, for the effective portion of qualifying hedges, are recorded in accumulated other comprehensive loss. The derivative’s gain or loss is released from accumulated other comprehensive loss to match the timing of the effect on earnings of the hedge’s underlying cash flows.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	Note 8 — 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 March 31, 2014, we had 43 aircraft on order and options to acquire an additional 55 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 Note 1, we were awarded a contract to provide SAR services for all of the U.K. The SAR configured aircraft on order in the table below are intended to service this contract.
		Fiscal Year Ending March 31,
		2015			2016				2017			2018 and			Total
												beyond
	Commitments as of March 31, 2014: (1)
	Number of aircraft:
	Medium	10			—				—			—			10
	Large (2)	13			6				3			—			22
	SAR configured	5			6				—			—			11
		28			12				3			—			43
	Related expenditures (in thousands)(3)
	Medium and large	$	373,755		$	89,741			$	37,587		$	—		$	501,083
	SAR configured	106,704			99,690				—			—			206,394
		$	480,459		$	189,431			$	37,587		$	—		$	707,477
	Options as of March 31, 2014: (2)
	Number of aircraft:
	Medium	—			7				7			7			21
	Large (2)	—			8				14			12			34
		—			15				21			19			55
	Related expenditures (in thousands)(3)	$	88,831		$	350,145			$	422,100		$	263,043		$	1,124,119
	_________
	(1)	Signed client contracts are in place that will utilize 19 of these aircraft.
	(2)	Five large aircraft on order and seven large aircraft under options expected to enter service between fiscal years 2016 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.
	The following chart presents an analysis of our aircraft orders and options during fiscal years 2014, 2013 and 2012:
		Fiscal Year Ended March 31,
		2014					2013					2012
		Orders		Options			Orders			Options		Orders		Options
	Beginning of fiscal year	45		70			15			40		6		31
	Aircraft delivered	(21	)	—			(8	)		—		(9	)	—
	Aircraft ordered	18		—			26			—		13		—
	New options	—		—			—			42		—		31
	Exercised options	8		(8	)		12			(12	)	7		(7	)
	Expired options	—		(7	)		—			—		—		(15	)
	Orders assigned subject to leaseback (1)	(7	)	—			—			—		(2	)	—
	End of fiscal year	43		55			45			70		15		40
	___________
	(1)	During fiscal years 2014 and 2012, respectively, we transferred our interest in seven and two aircraft previously ordered in return for $106.1 million and $23.4 million in progress payments previously paid on these aircraft.
	We periodically purchase aircraft for which we have no order.
	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, except for those with terms of a month or less that were not renewed, was $105.8 million, $67.4 million and $46.0 million in fiscal years 2014, 2013 and 2012, respectively, which includes rental expense incurred under operating leases for aircraft of $83.5 million, $46.8 million and $27.9 million, respectively. As of March 31, 2014, aggregate future payments under all non-cancelable operating leases that have initial or remaining terms in excess of one year, including leases for 61 aircraft, are as follows (in thousands):
		Aircraft			Other				Total
	Fiscal year ending March 31,
	2015	$	94,796		$	9,482			$	104,278
	2016	87,937			7,711				95,648
	2017	83,372			6,675				90,047
	2018	66,071			5,596				71,667
	2019	44,149			5,343				49,492
	Thereafter	44,376			39,899				84,275
		$	420,701		$	74,706			$	495,407
	We are using a financing strategy whereby we utilize operating leases to a larger extent than in the past. As part of this operating lease strategy, in fiscal years 2014 and 2013, respectively, we sold 14 and 11 aircraft for $246.4 million and $255.8 million, respectively, and entered into 14 and 11 separate agreements to lease these aircraft back. Additionally, in fiscal year 2014, we received payment of approximately $106.1 million for progress payments we had previously made on seven aircraft under construction and we assigned any future payments due on these construction agreements to the purchaser. We have the obligation and intent to lease the aircraft back from the purchaser upon completion. See Note 1 for further details.
	The aircraft leases range from base terms of five to 84 months with renewal options of up to 108 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. These leases are included in the amounts disclosed above. 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:
	End of Lease Term	Number		Monthly Lease Payment
		of Aircraft		(in thousands)
	Fiscal year 2015 to fiscal year 2016	9		$	1,023
	Fiscal year 2017 to fiscal year 2019	26		4,264
	Fiscal year 2020 to fiscal year 2024	26		2,751
		61		$	8,038
	Employee Agreements — Approximately 52% of our employees are represented by collective bargaining agreements and/or unions. These agreements generally include annual escalations of up to 12%. Periodically, certain groups of our employees who are not covered by a collective bargaining agreement consider entering into such an agreement.
	During fiscal year 2014, we recognized $2.9 million in severance expense included in direct costs and general and administrative expense in our North America business unit primarily as a result of our planned closure of our Alaska operations. During fiscal years 2014 and 2013, we recognized $2.1 million and $2.2 million, respectively, in compensation expense included in direct cost related to severance costs as a result of the termination of two separate contracts in the Southern North Sea. Also, during fiscals year 2014, 2013 and 2012, we recognized approximately $2.9 million, and $2.0 million, and $2.3 million, respectively, in compensation expense (including expenses recorded for the acceleration of unvested stock options and restricted stock), included in general and administrative expense, related to the separation between us and officers. We also have employee agreements with other members of senior management. For further details on the retirement of our President and Chief Executive Officer, see Note 10.
	Nigerian Litigation — In November 2005, two of our consolidated foreign affiliates were named in a lawsuit filed with the High Court of Lagos State, Nigeria by Mr. Benneth Osita Onwubalili and his affiliated company, Kensit Nigeria Limited, which allegedly acted as agents of our affiliates in Nigeria. The claimants allege that an agreement between the parties was terminated without justification and seek damages of $16.3 million. We responded to this claim in early 2006. There has been minimal activity on this claim since then.
	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 March 31, 2014, we had $55.0 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 5, 2012, a Bell 407 helicopter operated by a U.S. subsidiary of ours was involved in an accident in which the pilot was fatally injured. There were no other passengers onboard. We are currently working with authorities in their investigation.
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 of the aircraft 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 a total of sixteen 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. The gear shaft has been redesigned and, in April 2014, Airbus Helicopters advised us that the European Aviation Safety Authority (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 months. However, in July 2013 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. We currently operate 20 of these aircraft including 14 owned and six leased aircraft. Nine of the 11 aircraft in the U.K. have returned to service with another two aircraft expected to return to service in the first quarter of fiscal year 2014 which will be fitted with the new shafts. Three aircraft in Norway are currently back in operation. Five aircraft have returned to service in Australia and another aircraft is expected to return to service in June. 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 August 23, 2013, an AS332L2, operated by another helicopter company in our industry, ditched near Sumburgh Airport in the U.K. resulting in the loss of four lives. To date, the investigation has not found any evidence of a technical fault and the ongoing work by the U.K. Air Accidents Investigation Branch continues to focus on the operational aspects of the flight.
Following the August 2013 accident and in conjunction with two other helicopter operators in the U.K., we have established a Joint Operator’s Review of Safety to review current processes, procedures and equipment in order to identify best practice in the offshore helicopter industry, with a view to further enhancing safety for our clients and crew. Bristow Helicopters also separately participated in a United Kingdom Parliamentary Inquiry on helicopter safety (the “Inquiry”) which commenced November 6, 2013 with written submissions made on December 20, 2013 and oral hearings held January 27, 2014. We expect an official Inquiry report to be issued in the coming months.
On February 20, 2014, the U.K. Civil Aviation Authority 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 will go into effect on September 1, 2014, will restrict seating capacity on some aircraft in the North Sea until new breathing systems are available or side floats are installed. Further requirements, will be implemented over the next 12 months, including operational restrictions when sea states are above a certain prescribed level, or the flight prohibition of individuals whose size exceeds the dimensions of emergency egress windows.
On October 27, 2012, in the course of routine operations, a Bell 206 operated by a subsidiary of ours, performed a controlled sea ditching in Nigeria. All four people on board were uninjured and safe and the aircraft has been recovered. We are currently working with authorities in their investigation.
On January 21, 2014, in the course of a routine pilot training maneuver, a Schweizer 300CBi operated by Bristow Academy, experienced a rollover damaging the aircraft. Both individuals on board the aircraft were uninjured. We are currently working with authorities in their investigation.
In March 2014, we had a fire in our Port Harcourt, Nigeria aircraft hangar. Two aircraft were damaged and $11.1 million of inventory spare parts were destroyed. The aircraft hangar was partially damaged. We wrote off $11.1 million of inventory destroyed in the fire, which was offset by a receivable recorded of $11.1 million for insurance proceeds. The repairs required on the aircraft and the hangar are insured and therefore will have no impact on our results in future periods.
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	12 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
TAXES	'
	Note 9 — TAXES
	The components of deferred tax assets and liabilities are as follows (in thousands):
		March 31,
		2014				2013
	Deferred tax assets:
	Foreign tax credits	$	17,628			$	10,483
	Net operating losses	15,627				—
	Accrued pension liability	18,531				29,951
	Maintenance and repair	12,674				10,291
	Accrued equity compensation	11,627				11,607
	Deferred revenue	2,124				2,212
	Employee award programs	6,289				4,237
	Employee payroll accruals	4,845				4,494
	Other	3,188				6,348
	Valuation allowance	(6,896		)		—
	Total deferred tax assets	$	85,637			$	79,623
	Deferred tax liabilities:
	Property and equipment	$	(205,104	)		$	(189,482	)
	Inventories	(6,956		)		(11,068		)
	Investment in unconsolidated affiliates	(8,985		)		(11,681		)
	Employee programs	(1,895		)		—
	Other	(9,195		)		(6,912		)
	Total deferred tax liabilities	$	(232,135	)		$	(219,143	)
	Net deferred tax liabilities	$	(146,498	)		$	(139,520	)
	Companies may use foreign tax credits to offset the U.S. income taxes due on income earned from foreign sources. However, the credit that may be claimed for a particular taxable year is limited by the total income tax on the U.S. income tax return as well as by the ratio of foreign source net income in each statutory category to total net income. The amount of creditable foreign taxes available for the taxable year that exceeds the limitation (i.e.; “excess foreign tax credits”) may be carried back one year and forward ten years. We have $17.6 million of excess foreign tax credits as of March 31, 2014, of which $6.6 million will expire in fiscal year 2021, $3.9 million will expire in fiscal year 2022, $0.2 million will expire in fiscal year 2023 and $6.9 million will expire in fiscal year 2024.
	We record a valuation allowance when it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of the deferred tax assets depends on the ability to generate sufficient taxable income of the appropriate character in the future and in the appropriate taxing jurisdictions. As of March 31, 2014, valuation allowances totaled $6.9 million for operating loss carryforwards. The increase in the valuation allowance of $6.9 million in fiscal year 2014 resulted primarily from foreign losses.
	The components of income before provision for income taxes for fiscal years 2014, 2013 and 2012 are as follows (in thousands):
		Fiscal Year Ended March 31,
		2014				2013				2012
	Domestic	$	(14,357	)		$	2,472			$	(1,100	)
	Foreign	259,348				164,205				80,542
	Total	$	244,991			$	166,677			$	79,442
	The provision for income taxes for fiscal years 2014, 2013 and 2012 consisted of the following (in thousands):
		Fiscal Year Ended March 31,
		2014				2013				2012
	Current:
	Domestic	$	36,872			$	1,638			$	27
	Foreign	33,939				26,275				23,059
		$	70,811			$	27,913			$	23,086
	Deferred:
	Domestic	$	(6,646	)		$	1,619			$	1,658
	Foreign	(6,953		)		5,470				(10,543		)
		$	(13,599	)		$	7,089			$	(8,885	)
	Total	$	57,212			$	35,002			$	14,201
	The reconciliation of the U.S. Federal statutory tax rate to the effective income tax rate for the provision for income taxes is shown below:
		Fiscal Year Ended March 31,
		2014			2013			2012
	Statutory rate	35	%		35	%		35	%
	Net foreign tax on non-U.S. earnings	11.8	%		14.4	%		20.4	%
	Foreign earnings indefinitely reinvested abroad	(18.9	)%		(28.4	)%		(26.3	)%
	Change in valuation allowance	1.8	%		—	%		—	%
	Foreign earnings that are currently taxed in the U.S.	4.1	%		4.6	%		5.9	%
	Effect of reduction in U.K. corporate income tax rate	(1.2	)%		(1.7	)%		(2.3	)%
	Dividend inclusion as a result of internal realignment	1.1	%		—	%		16.6	%
	Benefit of prior year foreign tax credits	—	%		—	%		(5.3	)%
	Benefit of current year foreign tax credits	(5.2	)%		(5.5	)%		(9.8	)%
	Tax reserve release	(0.7	)%		—	%		(7.7	)%
	Other, net	(4.4	)%		2.6	%		(8.6	)%
	Effective tax rate	23.4	%		21	%		17.9	%
	Effective March 31, 2012, we completed an internal restructuring to provide more flexibility with internal cash requirements. As a result of this restructuring, we recognized tax expense of $13.2 million related to a dividend. This tax cost was partially offset by a change from a deduction of foreign taxes paid to credit for fiscal years 2012 and 2011 of $11.5 million. During February 2012, a foreign tax jurisdiction issued a favorable response to a ruling request that permitted release of a $12.6 million tax reserve.
	Fiscal years 2014, 2013 and 2012 include a benefit due to the revaluation of our deferred taxes as a result of the enactment of tax rate reductions in the U.K. of $2.9 million, $2.9 million and $1.8 million, respectively, effective April 1 of each year.
	In August 2008, certain of our existing and newly created subsidiaries completed intercompany leasing transactions involving eleven aircraft. The tax benefit of this transaction is being recognized over the remaining useful life of the assets, which is approximately 13 years. During each of the fiscal years 2014, 2013 and 2012, this transaction resulted in a $2.9 million reduction in our consolidated provision for income taxes.
	Our operations are subject to the jurisdiction of multiple tax authorities, which impose various types of taxes on us, including income, value added, sales and payroll taxes. Determination of taxes owed in any jurisdiction requires the interpretation of related tax laws, regulations, judicial decisions and administrative interpretations of the local tax authority. As a result, we are subject to tax assessments in such jurisdictions including the re-determination of taxable amounts by tax authorities that may not agree with our interpretations and positions taken. The following table summarizes the years open by jurisdiction as of March 31, 2014:
Jurisdiction	Years Open
U.S.	Fiscal year 2012 to present
U.K.	Fiscal year 2012 to present
Nigeria	Fiscal year 2005 to present
Trinidad	Fiscal year 2005 to present
The effects of a tax position are recognized in the period in which we determine that it is more-likely-than-not (defined as a more than 50% likelihood) that a tax position will be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. A tax position that meets the more-likely-than-not recognition threshold is measured as the largest amount of tax benefit that is greater than 50% likely of being recognized upon ultimate settlement.
We have analyzed filing positions in the federal, state and foreign jurisdictions where we are required to file income tax returns for all open tax years. We believe that the settlement of any tax contingencies would not have a significant impact on our consolidated financial position, results of operations and/or liquidity. In fiscal years 2014, 2013 and 2012, we had a net (benefit) provision of $(1.5) million, $0.1 million and $(10.4) million, respectively, of reserves for tax contingencies primarily related to non-U.S. income tax on foreign leasing operations. Our policy is to accrue interest and penalties associated with uncertain tax positions in our provision for income taxes. In fiscal years 2014, 2013 and 2012, $0.1 million, $0.1 million and $0.2 million, respectively, in interest and penalties were accrued in connection with uncertain tax positions.
As of March 31, 2014 and 2013, we had $0.2 million and $1.7 million, respectively, of unrecognized tax benefits, all of which would have an impact on our effective tax rate, if recognized.
The activity associated with our unrecognized tax benefit during fiscal years 2013 and 2012 is as follows (in thousands):
	Fiscal Year Ended
	March 31,
	2014				2013
Unrecognized tax benefits – beginning of fiscal year	$	1,710			$	1,523
Increases for tax positions taken in prior years	129				348
Decreases for tax positions taken in prior years	(1,434		)		(161		)
Decrease related to settlements with authorities	(218		)		—
Unrecognized tax benefits – end of fiscal year	$	187			$	1,710
Unremitted foreign earnings reinvested abroad upon which U.S. income taxes have not been provided aggregated approximately $679.3 million and $553.8 million as of March 31, 2014 and 2013, respectively. No accrual of income tax has been made for fiscal years 2014 and 2013 related to these indefinitely reinvested earnings as there was no plan in place to repatriate any of these foreign earnings to the U.S. as of the end of the fiscal year. Withholding taxes, if any, upon repatriation would not be significant.
We receive a tax benefit that is generated by certain employee stock benefit plan transactions. This benefit is recorded directly to additional paid-in-capital on our consolidated balance sheets and does not reduce our effective income tax rate. The tax benefit for fiscal years 2014, 2013 and 2012 totaled approximately $5.7 million, $0.5 million and $0.4 million, respectively.
As of March 31, 2012, we fully utilized our U.S. federal net operating losses that were generated in previous years. In fiscal year 2014, we added a $6.9 million valuation allowance against a loss carryforward related to foreign losses. During fiscal years 2014 through 2012, we recorded deferred tax assets related to direct and indirect foreign tax credits. As of March 31, 2014, we had $17.6 million of deferred tax assets relating to foreign tax credits that will expire in fiscal year 2024.
Income taxes paid during fiscal years 2014, 2013 and 2012 were $59.1 million, $24.1 million and $19.0 million, respectively.

EMPLOYEE_BENEFIT_PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Mar. 31, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
EMPLOYEE BENEFIT PLANS	'
	Note 10 — EMPLOYEE BENEFIT PLANS
	Defined Contribution Plans
	The Bristow Group Inc. Employee Savings and Retirement Plan (“Bristow Plan”) covers Bristow Group Inc., Bristow U.S. LLC, Bristow Panama Inc. and Bristow Alaska Inc. employees. Under the Bristow Plan, we match each participant’s contributions up to 3% of the employee’s compensation. In addition, under the Bristow Plan, we contribute an additional 3% of the employee’s compensation at the end of each calendar year.
	Bristow Helicopters and Bristow International Aviation (Guernsey) Limited (“BIAGL”) have a defined contribution plan. This defined contribution plan replaced the defined benefit pension plans described below for future accrual.
	Our contributions to our defined contribution plans were $12.7 million, $10.9 million and $10.7 million for fiscal years 2014, 2013 and 2012, respectively.
	Defined Benefit Plans
	The defined benefit pension plans of Bristow Helicopters and BIAGL replaced by the defined contribution plans described above covered all full-time employees of Bristow Aviation and BIAGL employed on or before December 31, 1997. Both plans were closed to future accrual from February 1, 2004. The defined benefits for employee members were based on the employee’s annualized average last three years’ pensionable salaries up to February 1, 2004, increasing thereafter in line with retail price inflation (prior to 2011) and consumer price inflation (from 2011 onwards), and subject to maximum increases of 5% per year over the period to retirement. Any valuation deficits are funded by contributions by Bristow Helicopters and BIAGL. Plan assets are held in separate funds administered by the plans’ trustee (the “Trustee”), which are primarily invested in equities and debt securities. For members of the two closed defined benefit pension plans, since January 2005, Bristow Helicopters contributes a maximum of 7% of a participant’s non-variable salary, and since April 2006, the maximum employer contribution into the plan has been 7.35% for pilots. Each member is required to contribute a minimum of 5% of non-variable salary for Bristow Helicopters to match the contribution. In addition, there are three defined contribution plans for staff who were not members of the original defined benefit plans, two of which are closed to new members.
	Bristow Norway has a final salary defined benefit pension plan. Pilots may retire from age 58 and other employees from age 62 (after meeting certain criteria). Bristow Norway also participates in the standard Norwegian Avtalefestet pension (contractual pension or “AFP”) early retirement system, which is only applicable for non-pilots due to the higher retirement age. The pension benefit is a percentage of final salary in excess of a deductible. The maximum pension is available to those with 30 or more years of service as of the date of retirement. Additionally, there are associated death and disability benefits. Plan assets are held in an insurance policy with an insurance company and contributions follow Norwegian rules, which are based on an individual actuarial calculation for each plan member.
	The following tables provide a rollforward of the projected benefit obligation and the fair value of plan assets, set forth the defined benefit retirement plans’ funded status and provide detail of the components of net periodic pension cost calculated for the U.K. and Norway pension plans. The measurement date adopted is March 31. For the purposes of amortizing gains and losses, the 10% corridor approach has been adopted and assets are taken at fair market value. Any such gains or losses are amortized over the average remaining life expectancy of the plan members.
		Fiscal Year Ended
		March 31,
		2014				2013
		(In thousands)
	Change in benefit obligation:
	Projected benefit obligation (PBO) at beginning of period	$	606,313			$	561,633
	Service cost	7,886				8,209
	Interest cost	26,861				25,683
	Actuarial (gain) loss	(29,313		)		63,393
	Benefit payments and expenses	(23,234		)		(23,652		)
	Effect of exchange rate changes	49,128				(28,953		)
	Projected benefit obligation (PBO) at end of period	$	637,641			$	606,313
	Change in plan assets:
	Market value of assets at beginning of period	$	479,666			$	449,891
	Actual return on assets	23,630				47,974
	Employer contributions	28,974				28,607
	Benefit payments and expenses	(23,234		)		(23,652		)
	Effect of exchange rate changes	41,782				(23,154		)
	Market value of assets at end of period	$	550,818			$	479,666
	Reconciliation of funded status:
	Accumulated benefit obligation (ABO)	$	611,782			$	582,047
	Projected benefit obligation (PBO)	$	637,641			$	606,313
	Fair value of assets	(550,818		)		(479,666		)
	Net recognized pension liability	$	86,823			$	126,647
	Amounts recognized in accumulated other comprehensive loss	$	232,848			$	244,322
		Fiscal Year Ended March 31,
		2014				2013				2012
		(In thousands)
	Components of net periodic pension cost:
	Service cost for benefits earned during the period	$	7,886			$	8,209			$	6,332
	Interest cost on PBO	26,861				25,683				28,208
	Expected return on assets	(29,282		)		(29,068		)		(29,639		)
	Amortization of unrecognized losses	7,705				6,612				5,386
	Net periodic pension cost	$	13,170			$	11,436			$	10,287
	The amount in accumulated other comprehensive loss as of March 31, 2014 expected to be recognized as a component of net periodic pension cost in fiscal year 2015 is $4.8 million, net of tax, and represents amortization of the net actuarial losses.
	Actuarial assumptions used to develop the components of the U.K. plans were as follows:
		Fiscal Year Ended March 31,
		2014			2013			2012
	Discount rate	4.4	%		4.9	%		5.6	%
	Expected long-term rate of return on assets	6.29	%		6.9	%		7.2	%
	Pension increase rate	3.3	%		3	%		3.5	%
	Actuarial assumptions used to develop the components of the Norway plan were as follows:
		Fiscal Year Ended March 31,
		2014			2013			2012
	Discount rate	4	%		3.5	%		4.75	%
	Rate of compensation increase	4.25	%		4.25	%		4.5	%
	Social Security increase amount	4	%		4	%		4.25	%
	Expected return on plan assets	3.25	%		4.5	%		4.75	%
	Pension increase rate	1.25	%		0.75	%		1.75	%
	We utilize a British pound sterling denominated AA corporate bond index as a basis for determining the discount rate for our U.K. plans and NOK-denominated corporate bonds available in Norway that are credit-rated as AA or AAA as a basis for determining the discount rate for our Norway plan. The expected rate of return assumptions have been determined following consultation with our actuarial advisors. In the case of bond investments, the rates assumed have been directly based on market redemption yields at the measurement date, and those on other asset classes represent forward-looking rates that have typically been based on other independent research by investment specialists.
	Under U.K. and Guernsey legislation, it is the Trustee who is responsible for the investment strategy of the plans, although day-to-day management of the assets is delegated to a team of regulated investment fund managers. The Trustee of the Bristow Staff Pension Scheme (the “Scheme”) has the following three stated primary objectives when determining investment strategy:
	(i)	“funding objective” - to ensure that the Scheme is fully funded using assumptions that contain a modest margin for prudence. Where an actuarial valuation reveals a deficit, a recovery plan will be put in place which will take into account the financial covenant to the employer;
	(ii)	“stability objective” - to have due regard to the likely level and volatility of required contributions when setting the Scheme’s investment strategy; and
	(iii)	“security objective” - to ensure that the solvency position of the Scheme (as assessed on a gilt basis) is expected to improve. The Trustee will take into account the strength of the employer’s covenant when determining the expected improvement in the solvency position of the Scheme.
The types of investments are held, and the relative allocation of assets to investments is selected, in light of the liability profile of the Scheme, its cash flow requirements, the funding level and the Trustee’s stated objectives. In addition, in order to avoid an undue concentration of risk, assets are diversified within and across asset classes.
In determining the overall investment strategy for the plans, the Trustee undertakes regular asset and liability modeling (“ALM”) with the assistance of their U.K. actuary. The ALM looks at a number of different investment scenarios and projects both a range and a best estimate of likely return from each one. Based on these analyses, and following consultation with us, the Trustee determines the benchmark allocation for the plans’ assets.
The market value of the plan assets as of March 31, 2014 and 2013 was allocated between asset classes as follows. Details of target allocation percentages under the Trustee’s investment strategies as of the same dates are also included.
	Target Allocation						Actual Allocation
	as of March 31,						as of March 31,
Asset Category	2014			2013			2014			2013
Equity securities	57.8	%		58.3	%		59.1	%		64.6	%
Debt securities	30.8	%		31.1	%		27.6	%		31	%
Property	—	%		—	%		1.5	%		1.8	%
Other assets	11.4	%		10.6	%		11.8	%		2.6	%
Total	100	%		100	%		100	%		100	%
The following table summarizes, by level within the fair value hierarchy, the plan assets we had as of March 31, 2014, which are valued at fair value (in thousands):
	Quoted Prices				Significant				Significant				Balance as of
	in Active				Other				Unobservable				March 31,
	Markets for				Observable				Inputs				2014
	Identical				Inputs				(Level 3)
	Assets				(Level 2)
	(Level 1)
Cash and cash equivalents	$	48,685			$	—			$	—			$	48,685
Equity investments - U.K.	—				118,712				—				118,712
Equity investments - Non-U.K.	—				96,537				—				96,537
Diversified growth (absolute return) funds	—				105,207				—				105,207
Government debt securities	—				51,853				—				51,853
Corporate debt securities	—				68,526				—				68,526
Insurance policies	—				—				61,298				61,298
Total investments	$	48,685			$	440,835			$	61,298			$	550,818
The following table summarizes, by level within the fair value hierarchy, the plan assets we had as of March 31, 2013, which are valued at fair value (in thousands):
	Quoted Prices				Significant				Significant				Balance as of
	in Active				Other				Unobservable				March 31,
	Markets for				Observable				Inputs				2013
	Identical				Inputs				(Level 3)
	Assets				(Level 2)
	(Level 1)
Cash and cash equivalents	$	1,973			$	—			$	—			$	1,973
Equity investments - U.K.	—				119,626				—				119,626
Equity investments - Non-U.K.	—				89,720				—				89,720
Diversified growth (absolute return) funds	—				94,426				—				94,426
Government debt securities	—				61,028				—				61,028
Corporate debt securities	—				63,304				—				63,304
Insurance policies	—				—				49,589				49,589
Total investments	$	1,973			$	428,104			$	49,589			$	479,666
The investments’ fair value measurement level within the fair value hierarchy is classified in its entirety based on the lowest level of input that is significant to the measurement. The fair value of assets using Level 2 inputs is determined based on the fair value of the underlying investment using quoted prices in active markets or other significant inputs that are deemed observable. Our Norway pension plan is vested in an insurance policy which is designated as Level 3 within the valuation hierarchy and the fair value is based on the estimated value provided by the insurer.
The following table summarizes the changes in the Level 3 plan assets for fiscal year 2014 (in thousands):
March 31, 2013	$	49,589
Actual return on assets	7,514
Net purchases, sales and settlements	5,479
Effect of exchange rate changes	(1,284		)
31-Mar-14	$	61,298
Estimated future benefit payments over each of the next five fiscal years from March 31, 2014 and in aggregate for the following five fiscal years after fiscal year 2019, including life assurance premiums, are as follows (in thousands):
Projected Benefit Payments by the Plans for Fiscal Years Ending March 31,	Payments
2015	$	27,229
2016	28,464
2017	29,381
2018	30,305
2019	31,230
Aggregate 2020 - 2024	167,674
We expect to fund these payments with our cash contributions to the plans, plan assets and earnings on plan assets. We pre-funded our contributions of £12.5 million ($20.8 million) to the main U.K. plan for the fiscal year ending March 31, 2015 in fiscal year 2014. Our contributions to the U.K pension plans and Norwegian plan and the BIAGL plan for the fiscal year ending March 31, 2015 are expected to be $21.2 million and $7.9 million, respectively.
Incentive Compensation
Incentive and Stock Option Plans — Stock–based awards are currently made under the Bristow Group Inc. 2007 Long-Term Incentive Plan (the “2007 Plan”). As of March 31, 2014, a maximum of 5,400,000 shares of Common Stock are reserved, including 2,992,841 shares available for incentive awards under the 2007 Plan. 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.
In addition, we have the following incentive and stock plans which have awards outstanding as of March 31, 2014 but under which we no longer make grants:
•	The 2004 Stock Incentive Plan (the “2004 Plan”), which provided for awards to officers and key employees in the form of stock options, stock appreciation rights, restricted stock, other stock-based awards or any combination thereof. Options become exercisable at such time or times as determined at the date of grant and expire no more than ten years after the date of grant.
•	The 2003 Non-qualified Stock Option Plan for Non-employee Directors (the “2003 Director Plan”), which provided for a maximum of 250,000 shares of Common Stock to be issued pursuant to such plan. As of the date of each annual meeting, each non-employee director who met certain attendance criteria was automatically granted an option to purchase 5,000 shares of our Common Stock. The exercise price of the options granted was equal to the fair market value of the Common Stock on the date of grant, and the options were exercisable not earlier than six months after the date of grant and expire no more than ten years after the date of grant.
In June 2013, May 2012 and June 2011, the Compensation Committee of our board of directors authorized the grant of stock options, time vested restricted stock and long-term performance cash awards to participating employees. Each of the stock options has a ten-year term and has an exercise price equal to the fair market value (as defined in the 2007 Plan) of the Common Stock on the grant date of $62.66, $43.38 and $43.79 per share for the June 2013, May 2012 and June 2011 awards, respectively. The options will vest in annual installments of one-third each, beginning on the first anniversary of the grant date. Restricted stock grants vest at the end of three years. Performance cash awards allow the recipient to receive from 0 to 200% of the target amount at the end of three years depending on whether our total shareholder return meets the minimum return requirements and how our total shareholder return ranks among a peer group over the performance period. The value of the performance cash awards is calculated on a quarterly basis by comparing the performance of our Common Stock, including any dividends paid since the award date, against the peer group and has a maximum potential payout of $14.0 million, $9.3 million and $8.0 million for the June 2013, May 2012 and June 2011 awards, respectively. The total value of the awards is recognized as compensation expense over a three-year vesting period with the recognition amount being adjusted quarterly. Compensation expense related to the performance cash awards during fiscal years 2014, 2013 and 2012 was $8.7 million, $10.2 million and $4.1 million, respectively. Performance cash compensation expense has been allocated to our various business units.
In 2007, we established a program to allow vesting of outstanding stock options and restricted stock grants and to waive forfeitures of outstanding performance restricted stock units upon retirement if the employee has achieved no less than five consecutive years of employment with the Company, voluntarily terminates employment after the age of 62 and enters into a noncompetition/nonsolicitation agreement in the form approved and provided by the Company. Subsequently, in 2010, we authorized an amendment to allow vesting of outstanding stock options and restricted stock grants, to continue the right to vest in performance cash awards and to waive forfeitures of outstanding performance restricted stock units upon retirement if the employee has accumulated a combined total of age and years of service with the Company of 80, voluntarily terminates employment and enters into a noncompetition/nonsolicitation agreement in the form approved and provided by the Company. Upon retirement, any unexercised options to purchase Common Stock and shares of restricted stock under the 2004 and 2007 Plans will automatically vest and options will remain exercisable for the remainder of the term specified in the applicable award document and any outstanding performance restricted stock units granted under the 2004 or 2007 Plans will not be forfeited solely due to termination of employment, so that the right remains to receive shares of Common Stock if the applicable performance measures are achieved in accordance with the 2004 or 2007 Plans.
On August 3, 2011, we amended our director compensation scheme to allow non-employee directors to elect to receive up to 50 percent of their annual restricted stock unit award in cash. As this election was made prior to the actual award, the cash portion of the award is accounted for separate from the stock portion. The cash award is accounted for as a liability award with compensation expense being recognized for the eventual cash payout at the end of the six month terms over the six month service periods. One non-employee director made this election and we recognized expense of $0.1 million for fiscal year 2012.
On November 4, 2013, the compensation committee of our board of directors authorized an amendment to all outstanding awards under the 2004 and 2007 Plans. The amendment modified the provisions of the awards with respect to vesting and exercise of such awards upon the involuntary termination by the Company of the recipient’s employment other than for “Cause” as defined in the recipient’s employment agreement, if any, or as defined in the amendment. The amendment is effective with respect to outstanding awards held by employees who are employed on or after November 4, 2013. The compensation committee retains the discretion to modify or revoke the amendment prospectively and retroactively to the extent such revocation or modification does not have a detrimental impact on an award granted prior to the date of such modification or revocation. If the terms of the amendment conflict with the provisions of an award recipient’s employment agreement, the provisions that are more favorable to the recipient apply. The treatment of awards under the plans pursuant to the amendment is similar to the treatment of awards pursuant to our policy for the treatment of awards upon retirement as described above.  Upon retirement, however, vested stock options will be exercisable for the remainder of their original term, and performance-based restricted stock units will continue to vest on the original time and performance schedule.
Total share-based compensation expense, which includes stock options, restricted stock and restricted stock units, was $15.4 million, $11.9 million and $11.5 million for fiscal years 2014, 2013 and 2012, respectively. Stock-based compensation expense is included in general and administrative expense in the consolidated statements of income and has been allocated to our various business units.
On May 14, 2013, our board of directors approved an amendment and restatement of the 2007 Plan, which was subsequently approved by our stockholders, to (1) increase the number of shares authorized for issuance thereunder from 2,400,000 shares to 5,400,000 shares, (2) change the way shares are counted such that for each full-value share granted after stockholder approval of the amended and restated 2007 Plan, the available shares will be reduced by two shares whereas for each option and stock appreciation right granted thereafter the available shares will be reduced by only one share, (3) reapprove and update the material terms of the 2007 Plan applicable to performance-based awards, (4) increase the maximum share and cash based individual award limits, (5) remove the ten-year term of the 2007 Plan, and (6) make other administrative and updating changes.
A summary of our stock option activity for fiscal year 2014 is presented below:
	Weighted Average Exercise Prices				Number of Shares			Weighted Average Remaining Contractual Life			Aggregate Intrinsic Value
											(in thousands)
Outstanding at March 31, 2013	$	40.03			1,150,519
Granted	62.66				302,678
Exercised	35.51				(433,608	)
Expired or forfeited	51.49				(17,433	)
Outstanding at March 31, 2014	48.62				1,002,156			6.95			$	15,228
Exercisable at March 31, 2014	43.22				471,431			5.13			$	26,956
Stock options granted to employees under the 2004 and 2007 Plans vest ratably over three years on each anniversary from the date of grant and expire ten years from the date of grant. Stock options granted to non-employee directors under the 2003 Director Plans vest after six months.
We use a Black-Scholes option pricing model to estimate the fair value of share-based awards. The Black-Scholes option pricing model incorporates various assumptions, including the risk-free interest rate, volatility, dividend yield and the expected term of the options.
The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for a period equal to the expected term of the option. Expected volatilities are based on the historical volatility of shares of our Common Stock, which has not been adjusted for any expectation of future volatility given uncertainty related to the future performance of our Common Stock at this time. We also use historical data to estimate the expected term of the options within the option pricing model; groups of employees that have similar historical exercise behavior are considered separately for valuation purposes. The expected term of the options represents the period of time that the options granted are expected to be outstanding. Additionally, we estimate pre-vesting option forfeitures at the time of grant and periodically revise those estimates in subsequent periods if actual pre-vesting forfeitures differ from those estimates. We record stock-based compensation expense only for those awards expected to vest using an estimated forfeiture rate based on our historical forfeiture data.
The following table shows the assumptions we used to compute the stock-based compensation expense for stock option grants issued during fiscal years 2014, 2013 and 2012.
	Fiscal Year Ended
	March 31,
	2014				2013				2012
Risk free interest rate	1.01		%		0.75		%		1.5		%
Expected life (years)	5				5				6
Volatility	48.7		%		50.2		%		47.1		%
Dividend yield	1.6		%		1.83		%		1.37		%
Weighted average grant-date fair value of options granted	$	23.77			$	16.73			$	17.32
Unrecognized stock-based compensation expense related to nonvested stock options was approximately $5.0 million as of March 31, 2014, relating to a total of 530,725 unvested stock options under our stock option plans. We expect to recognize this stock-based compensation expense over a weighted average period of approximately 1.7 years. The total fair value of options vested during fiscal years 2014, 2013 and 2012 was approximately $5.1 million, $3.9 million and $3.1 million, respectively.
The total intrinsic value, determined as of the date of exercise, of options exercised during fiscal years 2014, 2013 and 2012 was $15.5 million, $6.3 million and $2.2 million, respectively. The total amount of cash we received from option exercises during fiscal years 2014, 2013 and 2012 was $15.4 million, $15.3 million and $5.3 million, respectively. The total tax benefit attributable to options exercised during fiscal years 2014, 2013 and 2012 was $5.4 million, $1.9 million and $0.5 million, respectively.
The excess tax benefits from stock-based compensation for fiscal years 2014, 2013 and 2012 of $5.7 million, $0.5 million and $0.4 million, respectively, are reported on our consolidated statements of cash flows in financing activities. This represents the reduction in the provision for income taxes otherwise payable during the period attributable to the actual gross tax benefits in excess of the expected tax benefits for options exercised in current and prior periods.
We have two forms of restricted stock units that vest under different conditions. The first form is a performance restricted stock unit which fully vests on the third anniversary from the date of grant if the “Cumulative Annual Shareholder Return” as defined in the restricted stock unit agreement (“CASR”) equals or exceeds 15%, or partially vests if the CASR is less than 15% but greater than or equal to 10%. Any unvested performance restricted stock units will vest on the fourth anniversary from the date of grant under the same conditions as outline above, or on the fifth anniversary from the date of grant if the CASR equals or exceeds 3%. Any performance restricted stock units that do not vest on the fifth anniversary from the date of grant will expire.
The second form of performance restricted stock units fully vest on the third anniversary from the date of grant if the CASR equals or exceeds 3%. Any unvested performance restricted stock units will vest on the fifth anniversary date from the date of grant if the CASR equals or exceeds 3%. Any performance restricted stock units that do not vest on the fifth anniversary from the date of grant will expire. As of March 31, 2014, there were no non-vested restricted stock units.
Additionally, we have restricted stock awards that cliff vest on the third anniversary from the date of grant provided the grantee is still employed by the Company, subject to the Company’s retirement policy.
We record compensation expense for restricted stock units based on an estimate of the service period related to the awards, which is tied to the future performance of our stock over certain time periods under the terms of the award agreements. The estimated service period is reassessed quarterly. Changes in this estimate may cause the timing of expense recognized in future periods to accelerate. Compensation expense related to awards of restricted stock and restricted stock units for fiscal years 2014, 2013 and 2012 was $9.4 million, $7.4 million and $7.2 million, respectively.
The following is a summary of non-vested restricted stock and restricted stock units as of March 31, 2014 and 2013 and changes during fiscal year 2014:
	Units			Weighted
				Average
				Grant Date Fair
				Value per Unit
Non-vested as of March 31, 2013	500,029			$	38.63
Granted	232,364			64.99
Forfeited	(34,554	)		57.3
Vested	(238,122	)		35.59
Non-vested as of March 31, 2014	459,717			52.13
Unrecognized stock-based compensation expense related to non-vested restricted stock and restricted stock units was approximately $10.0 million as of March 31, 2014, relating to a total of 459,717 unvested restricted stock and restricted stock units. We expect to recognize this stock-based compensation expense over a weighted average period of approximately 2.0 years.
The Annual Incentive Compensation Plan provides for an annual award of cash bonuses to key employees based primarily on pre-established objective measures of performance. The bonuses related to this plan were $17.2 million, $12.2 million and $9.7 million for fiscal years 2014, 2013 and 2012, respectively. Also, management awarded a one-time bonus to all non-officer employees meeting certain service criteria in March 2013 totaling $3.3 million in the aggregate.
Additionally, we have a non-qualified deferred compensation plan for our senior executives. Under the terms of the plan, participants can elect to defer a portion of their compensation for distribution at a later date. In addition, we have the discretion to make annual tax deferred contributions to the plan on the participants’ behalf. We contributed $0.9 million, $0.7 million and $0.6 million to this plan in each of fiscal years 2014, 2013 and 2012, respectively. The assets of the plan are held in a rabbi trust and are subject to our general creditors. As of March 31, 2014, the amount held in trust was $6.6 million.
Retirement of President and Chief Executive Officer — On February 3, 2014, we announced that William E. Chiles will 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, and he has elected not to run for re-election and will not continue to serve as a director after that meeting. Following his resignation as an officer, Mr. Chiles will remain an employee of the Company and will provide consulting services to the Company.
Jonathan E. Baliff has been appointed President and Chief Executive Officer to succeed Mr. Chiles effective immediately following the resignation of Mr. Chiles as an officer of the Company. We expect to nominate Mr. Baliff as a member of our Board of Directors effective for the term beginning upon the conclusion of the 2014 annual meeting of the stockholders of the Company.
Mr. Chiles and the Company have 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, Mr. Chiles will be entitled to a lump sum cash payment of $3.8 million, which is equivalent to the amount that would be 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 will fully vest. Under the terms of the Agreement, following his resignation as an officer 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 compensation expense, included in general and administrative expense, of $1.9 million during fiscal year 2014 related to the Agreement.
Retention awards of restricted stock units were granted on February 3, 2014 to Jeremy Akel, Mark B. Duncan, Hilary S. Ware and E. Chipman Earle in the amount of 12,784 shares, 14,330 shares, 13,206 shares and 12,223 shares, respectively, at a grant date fair value of $71.18. These retention awards will vest on February 3, 2017, subject to continued service through that date by the applicable executive, or if earlier upon the executive’s death or disability or a change of control of the Company.
Other officer separation costs — On March 3, 2014, Mark B. Duncan announced his resignation as Senior Vice President, Commercial of the Company effective March 8, 2014. Mr. Duncan and the Company have entered into a Separation Agreement and Release, dated March 31, 2014 (the “Separation Agreement”) to specify the terms of his resignation from the Company, pursuant to which he will receive benefits generally consistent with the termination without cause terms set forth in his Amended and Restated Employment Agreement dated June 6, 2006, as amended March 10, 2008, and under our Executive Severance Benefits Plan dated November 3, 2010 and Vesting of Awards Upon Involuntary Termination Without Cause Policy dated November 6, 2013. During fiscal year 2014, we recorded compensation expense of $2.9 million (including expense recorded for the acceleration of unvested stock options and restricted stock), included in general and administrative expense related to the Separation Agreement. As part of the Separation Agreement, Mr. Duncan forfeited the retention award granted on February 3, 2014.

EMPLOYEE_BENEFIT_PLANS_SAP

EMPLOYEE BENEFIT PLANS (SAP)	12 Months Ended
	Mar. 31, 2014
Employee Benefit Plans Policy [Abstract]	'
Pension and Other Postretirement Plans, Policy [Policy Text Block]	'
	The defined benefit pension plans of Bristow Helicopters and BIAGL replaced by the defined contribution plans described above covered all full-time employees of Bristow Aviation and BIAGL employed on or before December 31, 1997. Both plans were closed to future accrual from February 1, 2004. The defined benefits for employee members were based on the employee’s annualized average last three years’ pensionable salaries up to February 1, 2004, increasing thereafter in line with retail price inflation (prior to 2011) and consumer price inflation (from 2011 onwards), and subject to maximum increases of 5% per year over the period to retirement. Any valuation deficits are funded by contributions by Bristow Helicopters and BIAGL. Plan assets are held in separate funds administered by the plans’ trustee (the “Trustee”), which are primarily invested in equities and debt securities. For members of the two closed defined benefit pension plans, since January 2005, Bristow Helicopters contributes a maximum of 7% of a participant’s non-variable salary, and since April 2006, the maximum employer contribution into the plan has been 7.35% for pilots. Each member is required to contribute a minimum of 5% of non-variable salary for Bristow Helicopters to match the contribution. In addition, there are three defined contribution plans for staff who were not members of the original defined benefit plans, two of which are closed to new members.
	Bristow Norway has a final salary defined benefit pension plan. Pilots may retire from age 58 and other employees from age 62 (after meeting certain criteria). Bristow Norway also participates in the standard Norwegian Avtalefestet pension (contractual pension or “AFP”) early retirement system, which is only applicable for non-pilots due to the higher retirement age. The pension benefit is a percentage of final salary in excess of a deductible. The maximum pension is available to those with 30 or more years of service as of the date of retirement. Additionally, there are associated death and disability benefits. Plan assets are held in an insurance policy with an insurance company and contributions follow Norwegian rules, which are based on an individual actuarial calculation for each plan member.
	The following tables provide a rollforward of the projected benefit obligation and the fair value of plan assets, set forth the defined benefit retirement plans’ funded status and provide detail of the components of net periodic pension cost calculated for the U.K. and Norway pension plans. The measurement date adopted is March 31. For the purposes of amortizing gains and losses, the 10% corridor approach has been adopted and assets are taken at fair market value. Any such gains or losses are amortized over the average remaining life expectancy of the plan members.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	'
	We use a Black-Scholes option pricing model to estimate the fair value of share-based awards. The Black-Scholes option pricing model incorporates various assumptions, including the risk-free interest rate, volatility, dividend yield and the expected term of the options.
	The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for a period equal to the expected term of the option. Expected volatilities are based on the historical volatility of shares of our Common Stock, which has not been adjusted for any expectation of future volatility given uncertainty related to the future performance of our Common Stock at this time. We also use historical data to estimate the expected term of the options within the option pricing model; groups of employees that have similar historical exercise behavior are considered separately for valuation purposes. The expected term of the options represents the period of time that the options granted are expected to be outstanding. Additionally, we estimate pre-vesting option forfeitures at the time of grant and periodically revise those estimates in subsequent periods if actual pre-vesting forfeitures differ from those estimates. We record stock-based compensation expense only for those awards expected to vest using an estimated forfeiture rate based on our historical forfeiture data.

STOCKHOLDERS_INVESTMENT_EARNIN

STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME	12 Months Ended
	Mar. 31, 2014
Stockholders' Investment, Earnings Per Share and Accumulated Other Comprehensive Income [Abstract]	'
STOCKHOLDERS' INVESTMENT AND COMPREHENSIVE INCOME	'
	Note 11 — STOCKHOLDERS’ INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME
	Stockholders’ Investment
	Common Stock — The total number of authorized shares of Common Stock reserved as of March 31, 2014 was 4,454,714. These shares are reserved in connection with our stock-based compensation plans.
	The following is a summary of changes in outstanding shares of Common Stock for the years ended March 31, 2014 and 2013:
			Shares			Weighted Average
						Price Per Share
	Outstanding as of March 31, 2012		35,755,317
	Exercise of stock options		416,936			$	36.67
	Issuance of restricted stock and restricted stock units		29,667			51.79
	Repurchases of common stock		(24,709	)		49.3
	Other		(26,572	)		39.63
	Outstanding as of March 31, 2013		36,150,639
	Exercise of stock options		433,608			35.51
	Issuance of restricted stock		167,797			67.27
	Repurchases of common stock		(1,043,875	)		74.4
	Other		300			65.09
	Outstanding as of March 31, 2014		35,708,469
	Restrictions on Foreign Ownership of Common Stock — Under the Federal Aviation Act, it is unlawful to operate certain aircraft for hire within the U.S. unless such aircraft are registered with the Federal Aviation Administration (the “FAA”) and the FAA has issued an operating certificate to the operator. As a general rule, aircraft may be registered under the Federal Aviation Act only if the aircraft are owned or controlled by one or more citizens of the U.S. and an operating certificate may be granted only to a citizen of the U.S. For purposes of these requirements, a corporation is deemed to be a citizen of the U.S. only if, among other things, at least 75% of its voting interests are owned or controlled by U.S. citizens. If persons other than U.S. citizens should come to own or control more than 25% of our voting interest or if any other requirements are not met, we have been advised that our aircraft may be subject to deregistration under the Federal Aviation Act, and we may lose our ability to operate within the U.S. Deregistration of our aircraft for any reason, including foreign ownership in excess of permitted levels, would have a material adverse effect on our ability to conduct operations within our North America and Bristow Academy business units. Therefore, our organizational documents currently provide for the automatic suspension of voting rights of shares of our Common Stock owned or controlled by non-U.S. citizens, and our right to redeem those shares, to the extent necessary to comply with these requirements. As of March 31, 2014, approximately 2,891,000 shares of our Common Stock were held by persons with foreign addresses. These shares represented approximately 8% of our total outstanding common shares as of March 31, 2014. Our foreign ownership may fluctuate on each trading day because our Common Stock and our 3% Convertible Senior notes are publicly traded.
	Dividends — We paid quarterly dividends of $0.25 per share during each quarter of fiscal year 2014, $0.20 per share during each quarter of fiscal year 2013 and $0.15 per share during each quarter of fiscal year 2012. On May 16, 2014, our board of directors approved a dividend of $0.32 per share of Common Stock, payable on June 19, 2014 to shareholders of record on June 5, 2014. For fiscal years 2014, 2013 and 2012, we paid dividends totaling $36.3 million, $28.7 million and $21.6 million, respectively, to our stockholders. 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 — On November 2, 2011, our board of directors authorized the expenditure of up to $100 million to repurchase shares of our Common Stock 12 months from that date. 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.
	On December 15, 2011, we entered into an accelerated share repurchase agreement with a financial institution under which we paid $25.1 million to purchase 526,895 shares of our Common Stock. The effective per share purchase prices were based generally on the average of the daily volume weighted average prices per share of our Common Stock, less a discount, calculated during an averaging period which began December 20, 2011 and was finalized March 20, 2012.
	On November 2, 2012, our board of directors extended the date to repurchase shares of our Common Stock by 12 months and increased the remaining repurchase amount to $100 million. During the last two quarters of fiscal year 2013, we spent $1.2 million to repurchase 24,709 shares of our Common Stock.
	On November 5, 2013, our board of directors extended the date to repurchase up to $100 million of shares of our Common Stock by another 12 months. During December 2013 and January 2014, we spent $33.5 million to repurchase 445,800 shares of our Common Stock. In February 2014, our board of directors increased the remaining repurchase authority amount to $100 million through November 4, 2014. During February and March 2014, we spent an additional $44.2 million to repurchase 598,075 shares of our Common Stock. Subsequently, from April 1, 2014 through May 16, 2014, we spent another $9.4 million to repurchase 125,983 additional shares of our Common Stock. As of May 16, 2014, we had $46.5 million of remaining repurchase authority, subject to expiration on November 4, 2014.
	We recorded the $77.7 million and $1.2 million payments as treasury stock on our consolidated balance sheets as of March 31, 2014 and 2013, respectively. Shares outstanding used to calculate earnings per share during fiscal years 2014, 2013 and 2012 reflect the repurchase of shares when they were delivered.
	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, restricted stock units and restricted stock awards, which were outstanding during the period but were anti-dilutive, as follows:
			Fiscal Year Ended March 31,
			2014				2013			2012
	Options:
	Outstanding		297,595				469,289			267,669
	Weighted average exercise price		$	43.59			$	43.88		$	30.16
	Restricted stock units:
	Outstanding		—				—			80,978
	Weighted average price		$	—			$	—		$	46.82
	Restricted stock awards:
	Outstanding		7,416				171			—
	Weighted average price		$	70.9			$	48.14		$	—
	The following table sets forth the computation of basic and diluted earnings per share:
			Fiscal Year Ended March 31,
			2014				2013			2012
	Earnings (in thousands):
	Income available to common stockholders – basic		$	186,737			$	130,102		$	63,530
	Interest expense on assumed conversion of 3% Convertible Senior Notes, net of tax (1)		—				—			—
	Income available to common stockholders – diluted		$	186,737			$	130,102		$	63,530
	Shares:
	Weighted average number of common shares outstanding – basic		36,283,853				36,010,191			36,068,884
	Assumed conversion of 3% Convertible Senior Notes outstanding during the period (1)		—				—			—
	Net effect of dilutive stock options, restricted stock units and restricted stock awards based on the treasury stock method		412,911				479,821			698,537
	Weighted average number of common shares outstanding – diluted		36,696,764				36,490,012			36,767,421
	Basic earnings per common share		$	5.15			$	3.61		$	1.76
	Diluted earnings per common share		$	5.09			$	3.57		$	1.73
	_________________
	(1)	Diluted earnings per common share for fiscal years 2014, 2013 and 2012 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 March 31, 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 fiscal years 2014, 2013 and 2012 as our average stock price during these periods did not meet or exceed the conversion requirements. See Note 5 for further details.
	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)			Unrealized loss on cash flow hedges			Total
	Balance as of March 31, 2011		$	35,543			$	(167,810	)	$	2,150		$	(130,117	)
	Other comprehensive income before reclassification		905				(32,099		)	(2,150		)	(33,344		)
	Reclassified from accumulated other comprehensive income		—				4,222			—			4,222
	Net current period other comprehensive income		905				(27,877		)	(2,150		)	(29,122		)
	Foreign exchange rate impact		(6,098		)		6,098			—			—
	Balance at March 31, 2012		30,350				(189,589		)	—			(159,239		)
	Other comprehensive income before reclassification		(11,982		)		(33,418		)	—			(45,400		)
Reclassified from accumulated other comprehensive income		—				4,956			—			4,956
Net current period other comprehensive income		(11,982		)		(28,462		)	—			(40,444		)
Foreign exchange rate impact		(3,679		)		3,679			—			—
Balance at March 31, 2013		14,689				(214,372		)	—			(199,683		)
Other comprehensive income before reclassification		19,810				17,063			—			36,873
Reclassified from accumulated other comprehensive income		—				6,304			—			6,304
Net current period other comprehensive income		19,810				23,367			—			43,177
Foreign exchange rate impact		23,313				(23,313		)	—			—
Balance at March 31, 2014		$	57,812			$	(214,318	)	$	—		$	(156,506	)
_________________
(1) Reclassification of amounts related to pension liability adjustments are included as a component of net periodic pension cost.

SEGMENT_INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
SEGMENT INFORMATION	'
	Note 12 — 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 also 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 fiscal years 2014, 2013 and 2012, and as of March 31, 2014 and 2013, reconciled to consolidated totals, and prepared on the same basis as our consolidated financial statements (in thousands):
			Fiscal Year Ended March 31,
			2014			2013			2012
	Business unit gross revenue from external clients:
	Europe		$	740,316		$	619,480		$	559,306
	West Africa		328,793			296,933			258,258
	North America		230,337			226,114			176,797
	Australia		168,424			186,752			162,727
	Other International		134,021			132,662			145,593
	Corporate and other		67,691			46,532			39,122
	Total business unit gross revenue		$	1,669,582		$	1,508,473		$	1,341,803
	Intra-business unit gross revenue:
	Europe		$	—		$	65		$	391
	North America		3			283			1,020
	Australia		—			—			462
	Corporate and other		4,452			1,989			(133		)
	Total intra-business unit gross revenue		$	4,455		$	2,337		$	1,740
	Consolidated gross revenue reconciliation:
	Europe		$	740,316		$	619,545		$	559,697
	West Africa		328,793			296,933			258,258
	North America		230,340			226,397			177,817
	Australia		168,424			186,752			163,189
	Other International		134,021			132,662			145,593
	Corporate and other		72,143			48,521			38,989
	Intra-business unit eliminations		(4,455		)	(2,337		)	(1,740		)
	Total consolidated gross revenue		$	1,669,582		$	1,508,473		$	1,341,803
			Fiscal Year Ended March 31,
			2014			2013			2012
	Earnings from unconsolidated affiliates, net of losses – equity method investments:
	Europe (1)		$	4,446		$	10,517		$	11,014
	North America		1,053			(736		)	—
	Other International		3,167			15,261			(2,732		)
	Total earnings from unconsolidated affiliates, net of losses – equity method investments		$	8,666		$	25,042		$	8,282
	Consolidated operating income (loss) reconciliation:
	Europe		$	114,729		$	111,785		$	94,277
	West Africa		80,053			70,315			63,768
	North America		32,255			27,538			8,378
	Australia		5,523			25,283			19,840
	Other International		33,769			45,201			36,343
	Corporate and other		(78,630		)	(64,046		)	(75,170		)
	Gain (loss) on disposal of assets		(722		)	8,068			(31,670		)
	Total consolidated operating income		$	186,977		$	224,144		$	115,766
	Capital expenditures:
	Europe		$	38,294		$	175,270		$	66,016
	West Africa		24,324			11,501			13,375
	North America		24,427			201,439			53,367
	Australia		7,058			3,736			2,421
	Other International		28,136			33,147			48,498
	Corporate and other (2)		506,374			146,332			142,743
	Total capital expenditures		$	628,613		$	571,425		$	326,420
	Depreciation and amortization:
	Europe		$	32,383		$	33,101		$	34,345
	West Africa		13,923			13,077			12,805
	North America		23,505			20,193			16,243
	Australia		8,728			9,995			11,352
	Other International		15,024			17,018			16,660
	Corporate and other		2,414			2,900			4,739
	Total depreciation and amortization		$	95,977		$	96,284		$	96,144
			March 31,
			2014			2013
	Identifiable assets:
Europe		$	932,803		$	808,568
West Africa		454,161			390,402
North America		487,659			527,710
Australia		260,483			245,757
Other International		579,571			589,361
Corporate and other (3)		683,580			388,894
Total identifiable assets		$	3,398,257		$	2,950,692
		March 31,
		2014			2013
Investments in unconsolidated affiliates – equity method investments:
Europe		$	1,067		$	8,569
North America		61,570			60,517
Other International		193,692			196,751
Total investments in unconsolidated affiliates – equity method investments		$	256,329		$	265,837
___________
(1)	On July 14, 2013, we sold our 50% interest in the FB Entities. See Note 3 for further discussion.
(2)	Includes $494.5 million, $140.1 million and $111.9 million of construction in progress payments that were not allocated to business units in fiscal years 2014, 2013 and 2012, respectively.
(3)	Includes $477.9 million and $222.8 million of construction in progress within property and equipment on our consolidated balance sheets as of March 31, 2014 and 2013, respectively, which primarily represents progress payments on aircraft to be delivered in future periods.
We attribute revenue to various countries based on the location where helicopter services are actually performed. Long-lived assets consist primarily of helicopters and are attributed to various countries based on the physical location of the asset at a given fiscal year-end. Entity-wide information by geographic area is as follows (in thousands):
			Fiscal Year Ended March 31,
			2014			2013			2012
	Gross revenue:
	United Kingdom		$	526,149		$	383,398		$	345,405
	Nigeria		328,793			296,933			258,258
	Norway		253,651			249,023			200,926
	United States		225,650			237,311			208,931
	Australia		168,424			186,752			162,727
	Trinidad		51,770			43,763			39,478
	Canada		32,895			16,447			—
	Malaysia		14,316			25,284			26,416
	Other countries		67,934			69,562			99,662
			$	1,669,582		$	1,508,473		$	1,341,803
		March 31,
		2014			2013
Long-lived assets:
United Kingdom		$	544,113		$	394,557
Nigeria		256,239			242,095
Canada		199,861			211,316
Australia		188,370			180,914
Norway		155,690			162,591
United States		128,124			183,890
Brazil		123,439			113,562
Malaysia		61,104			101,764
Trinidad		64,520			51,004
Tanzania		42,589			—
Other countries		26,769			56,562
Construction in progress attributable to aircraft (1)		477,933			222,817
		$	2,268,751		$	1,921,072
___________
(1)	These costs have been disclosed separately as the physical location where the aircraft will ultimately be operated is subject to change.
During fiscal year 2014, we conducted operations in over 20 countries. Due to the nature of our principal assets, aircraft are regularly and routinely moved between operating areas (both domestic and foreign) to meet changes in market and operating conditions. During fiscal years 2014, 2013 and 2012 the aggregate activities of one major integrated oil and gas company accounted for 13%, 13% and 12%, respectively, of our consolidated gross revenue. No other client accounted for 10% or more of our consolidated gross revenue during those periods. During fiscal year 2014, our top ten clients accounted for 61.3% of consolidated gross revenue.

QUARTERLY_FINANCIAL_INFORMATIO

QUARTERLY FINANCIAL INFORMATION (Unaudited)	12 Months Ended
	Mar. 31, 2014
Quarterly Financial Data [Abstract]	'
QUARTERLY FINANCIAL INFORMATION (Unaudited)	'
	Note 13 — QUARTERLY FINANCIAL INFORMATION (Unaudited)
			Fiscal Quarter Ended
			June 30(1)(2)		September 30  (3)(4)		December 31  (5)(6)		March 31  (7)(8)
			(In thousands, except per share amounts)
	Fiscal Year 2014
	Gross revenue		$	398,994	$	417,328	$	412,335	$	440,925
	Operating income (9)		56,119		53,935		29,502		47,421
	Net income attributable to Bristow Group (9)		26,886		110,606		18,927		30,318
	Earnings per share:
	Basic		$	0.74	$	3.04	$	0.52	$	0.84
	Diluted		$	0.74	$	3.01	$	0.51	$	0.83
	Fiscal Year 2013
	Gross revenue		$	362,608	$	365,754	$	388,469	$	391,642
	Operating income (9)		39,993		47,328		74,120		62,703
	Net income attributable to Bristow Group (9)		23,662		29,668		36,392		40,380
	Earnings per share:
	Basic		$	0.66	$	0.83	$	1.01	$	1.12
	Diluted		$	0.65	$	0.82	$	1	$	1.11
	__________
	(1)	Net income and diluted earnings per share for the fiscal quarter ended June 30, 2013 included a decrease of $8.3 million and $0.23 per share, respectively, as a result of the cancellation of a potential financing. Operating income, net income and diluted earnings per share for the fiscal quarter ended June 30, 2013 included a decrease of $0.8 million, $0.5 million and $0.01, respectively, due to an impairment of inventories.
	(2)	Operating income, net income and diluted earnings per share for the fiscal quarter ended June 30, 2012 included a decrease of $2.2 million, $1.7 million, and $0.05, respectively, as a result of severance costs recorded relating to the termination of a contract in the Southern North Sea.
	(3)	Operating income, net income and diluted earnings per share for the fiscal quarter ended September 30, 2013 included: (a) a decrease of $1.5 million, $1.0 million and $0.03, respectively, due to the impairment of inventories as a result of our review of excess inventory on aircraft model types we ceased ownership of or classified all or a significant portion as held for sale and (b) a decrease of $0.5 million, $0.4 million and $0.01, respectively, related to the planned closure of our Alaska operations (primarily severance and retention expense included in direct costs and general and administrative expense).
	(4)	Operating income, net income and diluted earnings per share for the fiscal quarter ended September 30, 2012 included an increase of $2.3 million, $1.5 million, and $0.04, respectively, as a result of the correction of a calculation error related to foreign currency derivative transactions impacting our earnings from Líder.
	(5)	Operating income, net income and diluted earnings per share for the fiscal quarter ended December 31, 2013 included: (a) a decrease of $2.1 million, $1.4 million and $0.04, respectively, from North America restructuring, (b) a decrease of $2.1 million, $1.6 million and $0.04, respectively, for severance costs as a result of a termination of a contract in the Southern North Sea and (c) a decrease of $19.3 million, $12.6 million and $0.34, respectively, in lower earnings from Líder for additional tax charges resulting primarily from a tax amnesty payment Líder made to the Brazilian government.
	(6)	Net income and diluted earnings per share for the fiscal quarter ended December 31, 2012 included: (a) a decrease of $11.4 million and $0.31, respectively, from the early retirement of the 7  ½% Senior Notes resulting from a $14.9 million early redemption premium and fees (included in extinguishment of debt) and the write-off of $2.6 million of unamortized debt issuance costs (included in interest expense) and (b) a decrease of $1.0 million and $0.03, respectively, due to the write-off of deferred financing fees related to the early payments made on the 364-Day Term Loan.
	(7)	Operating income, net income and diluted earnings per share for the fiscal quarter ended March 31, 2014 included: (a) a decrease of $0.8 million, $0.5 million and $0.01 per share, respectively, from North America restructuring, (b) a decrease of $4.8 million, $3.1 million and $0.09 per share, respectively, for CEO succession and officer separation costs, (c) a decrease of $8.6 million, $6.6 million and $0.18 per share, respectively, for higher insurance premiums due to a fire in Nigeria, (d) a decrease of $0.6 million, $0.4 million and $0.01 per share, respectively, for Mexico goodwill impairment, (e) an increase of $4.2 million, $2.8 million and $0.08 per share, respectively, for higher earnings from Líder an adjustment to tax charges recorded during the three months ended December 31, 2013 and a tax indemnity payment resulting from a tax amnesty payment Líder made to the Brazilian government and (f) a decrease of $10.5 million, $8.4 million and $0.23 per share, respectively, due to the impairment of inventories as a result of our review of excess inventory on aircraft model types we ceased ownership of or plan to dispose of over the next two fiscal years.
	(8)	Net income and diluted earnings per share for the fiscal quarter ended March 31, 2013 included a decrease of $0.6 million and $0.01, respectively, from the write-off of deferred financing fees related to the payoff of the 364-Day Term Loan. Operating income, net income and diluted earnings per share for the fiscal quarter ended March 31, 2013 included (a) an increase of $0.9 million, $0.7 million and $0.02, respectively, for the reversal of direct costs for a sale transaction executed in fiscal year 2012 to sell large aircraft where the costs were not ultimately incurred and (b) a decrease of $2.8 million, $2.2 million and $0.06, respectively, for an additional inventory allowance as a component of direct costs resulting from the sale of ten medium aircraft.
	(9)	The fiscal quarters ended June 30, September 30 and December 31, 2013, and March 31, 2014 included $(1.7) million, $(3.1) million, $4.0 million and $0.1 million, respectively in gain (loss) on disposal of assets included in operating income which also increased (decreased) net income by $(1.3) million, $(2.4) million, $3.1 million and $0.1 million, respectively, and diluted earnings per share by $(0.04), $(0.07), $0.09 and zero, respectively. The fiscal quarters ended June 30, September 30 and December 31, 2012, and March 31, 2013 included $(5.3) million, $(1.3) million, $7.4 million and $7.2 million, respectively, in gains (loss) on disposal of assets included in operating income which also increased (decreased) net income by $(4.2) million, $(1.0) million, $6.1 million and $5.5 million, respectively, and diluted earnings per share by $(0.12), $(0.03), $0.17 and $0.15, respectively.

SUPPLEMENTAL_CONDENSED_CONSOLI

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION	12 Months Ended
	Mar. 31, 2014
Supplemental Condensed Consolidating Financial Information [Abstract]	'
SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION	'
	Note 14 — SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION
	In connection with the issuance of the 7  1/2% Senior Notes (which we tendered and redeemed during fiscal year 2013), the 6  1/4% 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 sheets, statements of income, statements of comprehensive income and statements of cash flows 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
	Fiscal Year Ended March 31, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
		(In thousands)
	Revenue:
	Gross revenue	$	—		$	303,878		$	1,365,704		$	—		$	1,669,582
	Intercompany revenue	14,754			78,576			—			(93,330		)	—
		14,754			382,454			1,365,704			(93,330		)	1,669,582
	Operating expense:
	Direct cost and reimbursable expense	—			219,873			966,259			—			1,186,132
	Intercompany expenses	—			—			93,330			(93,330		)	—
	Impairment of inventories	—			6,988			5,681			—			12,669
	Depreciation and amortization	2,835			43,052			50,090			—			95,977
	General and administrative	64,891			33,925			100,998			—			199,814
		67,726			303,838			1,216,358			(93,330		)	1,494,592
	Gain (loss) on disposal of assets	(45		)	4,312			(4,989		)	—			(722		)
	Earnings from unconsolidated affiliates, net of losses	189,209			—			12,666			(189,166		)	12,709
	Operating income	136,192			82,928			157,023			(189,166		)	186,977
	Interest income	127,142			3			1,710			(127,135		)	1,720
	Interest expense	(47,170		)	(4,788		)	(120,115		)	127,135			(44,938		)
	Gain on sale of unconsolidated affiliate	—			—			103,924			—			103,924
	Other income (expense), net	(174		)	(342		)	(2,176		)	—			(2,692		)
	Income from continuing operations before provision for income taxes	215,990			77,801			140,366			(189,166		)	244,991
	Allocation of consolidated income taxes	(29,193		)	(6,292		)	(21,727		)	—			(57,212		)
	Net income	186,797			71,509			118,639			(189,166		)	187,779
	Net income attributable to noncontrolling interests	(60		)	—			(982		)	—			(1,042		)
	Net income attributable to Bristow Group	$	186,737		$	71,509		$	117,657		$	(189,166	)	$	186,737
	Supplemental Condensed Consolidating Statement of Comprehensive Income
	Fiscal Year Ended March 31, 2014
		Parent			Guarantor			Non-			Eliminations			Consolidated
		Company			Subsidiaries			Guarantor
		Only						Subsidiaries
					(In thousands)
	Net income	$	186,797		$	71,509		$	118,639		$	(189,166	)	$	187,779
	Other comprehensive income (loss):
	Currency translation adjustments	8,173			—			(40,402		)	50,958			18,729
	Pension liability adjustment	—			—			23,367			—			23,367
	Total comprehensive income	194,970			71,509			101,604			(138,208		)	229,875
	Net (income) loss attributable to noncontrolling interests	(60		)	—			(982		)	—			(1,042		)
	Currency translation adjustments attributable to noncontrolling interests	—			—			1,081			—			1,081
	Total comprehensive income attributable to noncontrolling interests	(60		)	—			99			—			39
	Total comprehensive income attributable to Bristow Group	$	194,910		$	71,509		$	101,703		$	(138,208	)	$	229,914
	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
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 advance	—			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 stock	(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
Fiscal Year Ended March 31, 2014
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net cash provided by (used in) operating activities	$	(48,173	)	$	107,059		$	173,654		$	(446	)	$	232,094
Cash flows from investing activities:
Capital expenditures	(33,197		)	(482,786		)	(246,868		)	134,238			(628,613		)
Acquisitions, net of cash received	—			—			(39,850		)	—			(39,850		)
Proceeds from sale of unconsolidated affiliate	—			—			112,210			—			112,210
Proceeds from asset dispositions	—			284,042			140,147			(134,238		)	289,951
Net cash used in investing activities	(33,197		)	(198,744		)	(34,361		)	—			(266,302		)
Cash flows from financing activities:
Proceeds from borrowings	528,600			—			4,464			—			533,064
Payment of contingent consideration	—			—			(6,000		)	—			(6,000		)
Debt issuance costs	(15,523		)	—			—			—			(15,523		)
Repayment of debt and debt redemption	(508,060		)	—			(4,432		)	—			(512,492		)
premiums
Proceeds from assignment of aircraft purchase agreements	—			106,113			—			—			106,113
Partial prepayment of put/call obligation	(57		)	—			—			—			(57		)
Acquisition of noncontrolling interest	—			—			(2,078		)	—			(2,078		)
Repurchase of Common Stock	(77,661		)	—			—			—			(77,661		)
Dividends paid	(33,254		)	34			(3,100		)	—			(36,320		)
Increases (decreases) in cash related to intercompany advances and debt	138,991			(19,832		)	(119,159		)	—			—
Issuance of Common Stock	15,398			—			—			—			15,398
Tax benefit related to stock-based compensation	5,723			—			—			—			5,723
Net cash provided by (used in) financing activities	54,157			86,315			(130,305		)	—			10,167
Effect of exchange rate changes on cash and cash equivalents	—			—			12,759			—			12,759
Net increase (decrease) in cash and cash equivalents	(27,213		)	(5,370		)	21,747			(446		)	(11,282		)
Cash and cash equivalents at beginning of period	31,853			5,370			178,400			—			215,623
Cash and cash equivalents at end of period	$	4,640		$	—		$	200,147		$	(446	)	$	204,341
Supplemental Condensed Consolidating Statement of Income
Fiscal Year Ended March 31, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Revenue:
Gross revenue	$	—		$	300,731		$	1,207,742		$	—		$	1,508,473
Intercompany revenue	12,537			66,625			—			(79,162		)	—
	12,537			367,356			1,207,742			(79,162		)	1,508,473
Operating expense:
Direct cost and reimbursable expense	—			208,995			848,799			—			1,057,794
Intercompany expenses	—			—			79,162			(79,162		)	—
Depreciation and amortization	4,588			38,851			52,845			—			96,284
General and administrative	52,968			29,252			81,169			—			163,389
	57,556			277,098			1,061,975			(79,162		)	1,317,467
Gain on disposal of assets	—			2,474			5,594			—			8,068
Earnings from unconsolidated affiliates, net of losses	123,586			—			25,070			(123,586		)	25,070
Operating income	78,567			92,732			176,431			(123,586		)	224,144
Interest income	115,276			17			704			(115,209		)	788
Interest expense	(44,844		)	—			(112,811		)	115,209			(42,446		)
Extinguishment of debt	(14,932		)	—			—			—			(14,932		)
Other income (expense), net	94			103			(1,074		)	—			(877		)
Income before provision for income taxes	134,161			92,852			63,250			(123,586		)	166,677
Allocation of consolidated income taxes	(3,996		)	(6,070		)	(24,936		)	—			(35,002		)
Net income	130,165			86,782			38,314			(123,586		)	131,675
Net income attributable to noncontrolling interests	(63		)	—			(1,510		)	—			(1,573		)
Net income attributable to Bristow Group	$	130,102		$	86,782		$	36,804		$	(123,586	)	$	130,102
Supplemental Condensed Consolidating Statement of Comprehensive Income
Fiscal Year Ended March 31, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
				(In thousands)
Net income	$	130,165		$	86,782		$	38,314		$	(123,586	)	$	131,675
Other comprehensive income (loss):
Currency translation adjustments	(1,186		)	—			(6,383		)	(4,413		)	(11,982		)
Pension liability adjustment	—			—			(28,462		)	—			(28,462		)
Total comprehensive income (loss)	128,979			86,782			3,469			(127,999		)	91,231
Net (income) loss attributable to noncontrolling interests	(63		)	—			(1,510		)	—			(1,573		)
Total comprehensive (income) loss attributable to noncontrolling interests	(63		)	—			(1,510		)	—			(1,573		)
Total comprehensive income (loss) attributable to Bristow Group	$	128,916		$	86,782		$	1,959		$	(127,999	)	$	89,658
Supplemental Condensed Consolidating Balance Sheet
As of March 31, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	31,853		$	5,370		$	178,400		$	—		$	215,623
Accounts receivable	18,498			80,615			246,612			(82,944		)	262,781
Inventories	—			51,970			101,999			—			153,969
Assets held for sale	—			1,268			7,022			—			8,290
Prepaid expenses and other current assets	16,071			12,415			23,263			(16,654		)	35,095
Total current assets	66,422			151,638			557,296			(99,598		)	675,758
Intercompany investment	1,163,935			111,435			—			(1,275,370		)	—
Investment in unconsolidated affiliates	—			150			271,973			—			272,123
Intercompany notes receivable	1,401,680			—			—			(1,401,680		)	—
Property and equipment - at cost:
Land and buildings	939			48,907			58,747			—			108,593
Aircraft and equipment	31,310			1,170,531			1,104,213			—			2,306,054
	32,249			1,219,438			1,162,960			—			2,414,647
Less: Accumulated depreciation and amortization	(10,680		)	(205,746		)	(277,149		)	—			(493,575		)
	21,569			1,013,692			885,811			—			1,921,072
Goodwill	—			4,756			24,141			—			28,897
Other assets	40,877			1,341			149,544			(138,920		)	52,842
Total assets	$	2,694,483		$	1,283,012		$	1,888,765		$	(2,915,568	)	$	2,950,692
LIABILITIES AND STOCKHOLDERS’ INVESTMENT
Current liabilities:
Accounts payable	$	4,049		$	44,017		$	101,021		$	(79,266	)	$	69,821
Accrued liabilities	29,534			22,404			115,112			(19,369		)	147,681
Deferred taxes	(4,184		)	115			4,069			—			—
Short-term borrowings and current maturities of long-term debt	21,875			—			448			—			22,323
Total current liabilities	51,274			66,536			220,650			(98,635		)	239,825
Long-term debt, less current maturities	764,946			—			—			—			764,946
Intercompany notes payable	—			463,184			963,687			(1,426,871		)	—
Accrued pension liabilities	—			—			126,647			—			126,647
Other liabilities and deferred credits	10,761			8,530			178,525			(140,620		)	57,196
Deferred taxes	128,153			8,328			14,640			—			151,121
Stockholders’ investment:
Common stock	367			4,996			22,876			(27,872		)	367
Additional paid-in-capital	731,883			9,291			270,905			(280,196		)	731,883
Retained earnings	1,094,803			722,147			62,602			(784,749		)	1,094,803
Accumulated other comprehensive income (loss)	(62,892		)	—			19,834			(156,625		)	(199,683		)
Treasury shares	(26,304		)	—			—			—			(26,304		)
Total Bristow Group stockholders’ investment	1,737,857			736,434			376,217			(1,249,442		)	1,601,066
Noncontrolling interests	1,492			—			8,399			—			9,891
Total stockholders’ investment	1,739,349			736,434			384,616			(1,249,442		)	1,610,957
Total liabilities and stockholders’ investment	$	2,694,483		$	1,283,012		$	1,888,765		$	(2,915,568	)	$	2,950,692
Supplemental Condensed Consolidating Statement of Cash Flows
Fiscal Year Ended March 31, 2013
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net cash provided by (used in) operating activities	$	(45,184	)	$	156,371		$	155,577		$	—		$	266,764
Cash flows from investing activities:
Capital expenditures	(17,532		)	(503,120		)	(202,633		)	151,860			(571,425		)
Proceeds from asset dispositions	—			185,876			280,831			(151,860		)	314,847
Investment in unconsolidated affiliates	—			—			(51,179		)	—			(51,179		)
Net cash used in investing activities	(17,532		)	(317,244		)	27,019			—			(307,757		)
Cash flows from financing activities:
Proceeds from borrowings	675,000			—			449			—			675,449
Debt issuance costs	(10,344		)	—			—			—			(10,344		)
Repayment of debt and debt redemption premiums	(663,921		)	—			—			—			(663,921		)
Dividends paid	(11,242		)	(12,955		)	(4,537		)	—			(28,734		)
Increases (decreases) in cash related to intercompany advances and debt	13,960			176,043			(190,003		)	—			—
Partial prepayment of put/call obligation	(63		)	—			—			—			(63		)
Repurchase of Common Stock	(1,219		)	—			—			—			(1,219		)
Tax benefit related to exercise of stock options	500			—			—						500
Issuance of Common Stock	15,289			—			—			—			15,289
Net cash provided by (used in) financing activities	17,960			163,088			(194,091		)	—			(13,043		)
Effect of exchange rate changes on cash and cash equivalents	—			—			8,109			—			8,109
Net increase (decrease) in cash and cash equivalents	(44,756		)	2,215			(3,386		)	—			(45,927		)
Cash and cash equivalents at beginning of period	76,609			3,155			181,786			—			261,550
Cash and cash equivalents at end of period	$	31,853		$	5,370		$	178,400		$	—		$	215,623
Supplemental Condensed Consolidating Statement of Income
Fiscal Year Ended March 31, 2012
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Revenue:
Gross revenue	$	—		$	258,525		$	1,083,278		$	—		$	1,341,803
Intercompany revenue	4,981			59,708			—			(64,689		)	—
	4,981			318,233			1,083,278			(64,689		)	1,341,803
Operating expense:
Direct cost and reimbursable expense	—			184,258			763,392			—			947,650
Intercompany expenses	—			—			64,689			(64,689		)	—
Impairment of inventories	—			9,212			16,707			—			25,919
Depreciation and amortization	3,687			36,185			56,272			—			96,144
General and administrative	39,747			20,595			74,991			—			135,333
	43,434			250,250			976,051			(64,689		)	1,205,046
Gain on disposal of assets	(6		)	1,705			(33,369		)	—			(31,670		)
Earnings from unconsolidated affiliates, net of losses	43,626			—			8,679			(41,626		)	10,679
Operating income	5,167			69,688			82,537			(41,626		)	115,766
Interest income	96,792			200			517			(96,949		)	560
Interest expense	(37,856		)	—			(97,223		)	96,949			(38,130		)
Other income (expense), net	25			100			1,121			—			1,246
Income from continuing operations before provision for income taxes	64,128			69,988			(13,048		)	(41,626		)	79,442
Allocation of consolidated income taxes	(533		)	(7,887		)	(5,781		)	—			(14,201		)
Net income	63,595			62,101			(18,829		)	(41,626		)	65,241
Net income attributable to noncontrolling interests	(65		)	—			(1,646		)	—			(1,711		)
Net income attributable to Bristow Group	$	63,530		$	62,101		$	(20,475	)	$	(41,626	)	$	63,530
Supplemental Condensed Consolidating Statement of Comprehensive Income
Fiscal Year Ended March 31, 2012
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
				(In thousands)
Net income	$	63,595		$	62,101		$	(18,829	)	$	(41,626	)	$	65,241
Other comprehensive income (loss):
Currency translation adjustments	1,480			—			(13,037		)	12,462			905
Pension liability adjustment	—			—			(27,877		)	—			(27,877		)
Unrealized gain on cash flow hedges	—			—			(2,150		)	—			(2,150		)
Total comprehensive income	65,075			62,101			(61,893		)	(29,164		)	36,119
Net (income) loss attributable to noncontrolling interests	(65		)	—			(1,646		)	—			(1,711		)
Total comprehensive (income) loss attributable to noncontrolling interests	(65		)	—			(1,646		)	—			(1,711		)
Total comprehensive income attributable to Bristow Group	$	65,010		$	62,101		$	(63,539	)	$	(29,164	)	$	34,408
Supplemental Condensed Consolidating Statement of Cash Flows
Fiscal Year Ended March 31, 2012
	Parent			Guarantor			Non-			Eliminations			Consolidated
	Company			Subsidiaries			Guarantor
	Only						Subsidiaries
	(In thousands)
Net cash provided by (used in) operating activities	$	(31,226	)	$	91,773		$	170,800		$	—		$	231,347
Cash flows from investing activities:
Capital expenditures	(2,710		)	(230,858		)	(92,852		)	—			(326,420		)
Deposits on assets held for sale	—			—			200			—			200
Proceeds from asset dispositions	—			173,603			66,240			—			239,843
Investment in unconsolidated affiliates	(2,378		)	—			—			—			(2,378		)
Net cash used in investing activities	(5,088		)	(57,255		)	(26,412		)	—			(88,755		)
Cash flows from financing activities:
Proceeds from borrowings	159,300			—			693			—			159,993
Debt issuance costs	(871		)	—			—			—			(871		)
Repayment of debt and debt redemption	(95,290		)	—			(18,129		)	—			(113,419		)
premiums
Increases (decreases) in cash related to intercompany advances and debt	15,429			(11,407		)	(4,022		)	—			—
Dividends paid	29,781			(24,927		)	(26,470		)	—			(21,616		)
Partial prepayment of put/call obligation	(63		)	—			—			—			(63		)
Acquisition of noncontrolling interest	—			(262		)	—			—			(262		)
Repurchase of Common Stock	(25,085		)	—			—			—			(25,085		)
Issuance of Common Stock	5,293			—			—			—			5,293
Tax benefit related to stock-based compensation	354			—			—			—			354
Net cash provided by (used in) financing activities	88,848			(36,596		)	(47,928		)	—			4,324
Effect of exchange rate changes on cash and cash equivalents	—			—			(1,727		)	—			(1,727		)
Net increase in cash and cash equivalents	52,534			(2,078		)	94,733			—			145,189
Cash and cash equivalents at beginning of period	24,075			5,233			87,053			—			116,361
Cash and cash equivalents at end of period	$	76,609		$	3,155		$	181,786		$	—		$	261,550

OPERATIONS_BASIS_OF_PRESENTATI2

OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Mar. 31, 2014
Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]	'
Rollforward schedule of allowance for doubtful accounts	'
		Fiscal Year Ended March 31,
		2014			2013			2012
	Balance – beginning of fiscal year	$	5,079		$	243		$	99
	Additional allowances	87			4,887			162
	Write-offs and collections	(92		)	(51		)	(18		)
	Balance – end of fiscal year	$	5,074		$	5,079		$	243
Rollforward schedule of inventory allowance	'
		Fiscal Year Ended March 31,
		2014			2013			2012
	Balance – beginning of fiscal year	$	31,504		$	34,364		$	16,018
	Impairment of inventories	12,669			—			25,919
	Additional allowances	6,807			8,479			3,124
	Inventory disposed and scrapped	(6,096		)	(10,053		)	(11,331		)
	Foreign currency effects	2,414			(1,286		)	634
	Balance – end of fiscal year	$	47,298		$	31,504		$	34,364
Schedule of Goodwill	'
		Europe			Bristow			West			Other			Total
					Academy			Africa			International
	March 31, 2012	$	12,554		$	10,260		$	6,254		$	576		$	29,644
	Foreign currency translation	(671		)	(48		)	(28		)	—			(747		)
	March 31, 2013	11,883			10,212			6,226			576			28,897
	Foreign currency translation	1,839			90			(49		)	—			1,880
	Eastern Airways acquisition	26,479			—			—			—			26,479
	Impairments	—			—			—			(576		)	(576		)
	March 31, 2014	$	40,201		$	10,302		$	6,177		$	—		$	56,680
Schedule of Other Intangible Assets	'
		Client			Client			Trade name and trademarks			Internally developed software			Licenses			Total
		contracts			relationships
		Gross Carrying Amount
	March 31, 2012	$	7,251		$	1,746		$	—		$	—		$	840		$	9,837
	Foreign currency translation	(64		)	(16		)	—			—			(7		)	(87		)
	March 31, 2013	7,187			1,730			—			—			833			9,750
	Foreign currency translation	(58		)	(14		)	—			—			(6		)	(78		)
	Eastern Airways acquisition	—			10,291			5,326			1,339			—			16,956
	March 31, 2014	$	7,129		$	12,007		$	5,326		$	1,339		$	827		$	26,628
		Accumulated Amortization
	March 31, 2012	$	(4,345	)	$	(582	)	$	—		$	—		$	(304	)	$	(5,231	)
	Amortization expense	(1,317		)	(176		)	—			—			(84		)	(1,577		)
	March 31, 2013	(5,662		)	(758		)	—			—			(388		)	(6,808		)
	Amortization expense	(1,270		)	(170		)	—			—			(81		)	(1,521		)
	March 31, 2014	$	(6,932	)	$	(928	)	$	—		$	—		$	(469	)	$	(8,329	)
	Weighted average remaining contractual life, in years	0.2			20			15			5			4.4			12
Schedule of Expected Amortization Expense	'
		2015	$	1,586
		2016	1,389
		2017	1,389
		2018	1,389
		2019	1,279
		Thereafter	11,267
			$	18,299

ACQUISITIONS_ACQUISITIONS_Tabl

ACQUISITIONS ACQUISITIONS (Tables)	12 Months Ended
	Mar. 31, 2014
Business Acquisition [Line Items]	'
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	'
	Current assets		$	21,117
	Property and equipment		63,391
	Goodwill		26,479
	Prepaid expenses and other assets		20,474
	Total assets		131,461
	Current liabilities, including debt		(37,644		)
	Long-term debt, less current maturities		(20,400		)
	Other long-term liabilities		(8,239		)
	Total liabilities		(66,283		)
	Temporary equity		(21,139		)
	Net assets		$	44,039
Temporary Equity [Table Text Block]	'
	Acquisition of Eastern Airways		$	21,139
	Noncontrolling interest expense		671
	Currency translation		473
	Balance – end of fiscal year		$	22,283
Business Acquisition, Pro Forma Information [Table Text Block]	'
		Fiscal Year Ended March 31,
		2014				2013
		(in thousands)
		(unaudited)
	Gross revenue	$	1,761,390			$	1,625,832
	Net income	188,921				144,136

VARIABLE_INTEREST_ENTITIES_AND2

VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (TABLES)	12 Months Ended
	Mar. 31, 2014
Variable Interest Entities and Other Investments in Significant Affiliates [Abstract]	'
Noncontrolling Interest Bristow Aviation [Table Text Block]	'
		Fiscal Year Ended March 31,
		2014				2013				2012
	Balance – beginning of fiscal year	$	1,492			$	1,577			$	1,582
	Payments to noncontrolling interest shareholders	(57		)		(63		)		(63		)
	Noncontrolling interest expense	57				60				62
	Currency translation	153				(82		)		(4		)
	Balance – end of fiscal year	$	1,645			$	1,492			$	1,577
Primary Beneficiary Variable Interest Balance Sheet [Table Text Block]	'
		March 31,
		2014				2013
	Assets
	Cash and cash equivalents	$	173,490			$	93,227
	Accounts receivable	311,641				240,861
	Inventories	94,288				100,115
	Prepaid expenses and other current assets	45,791				20,575
	Total current assets	625,210				454,778
	Investment in unconsolidated affiliates	1,414				9,092
	Property and equipment, net	217,969				157,066
	Goodwill	41,218				12,810
	Other assets	45,477				26,575
	Total assets	$	931,288			$	660,321
	Liabilities
	Accounts payable	$	182,892			$	128,591
	Accrued liabilities	1,405,401				1,214,209
	Deferred taxes	3,588				7,907
	Current maturities of long-term debt	9,664				448
	Total current liabilities	1,601,545				1,351,155
	Long-term debt, less current maturities	172,391				138,147
	Accrued pension liabilities	86,824				126,647
	Other liabilities and deferred credits	2,252				1,755
	Deferred taxes	13,062				—
	Temporary equity	22,283				—
	Total liabilities	$	1,898,357			$	1,617,704
Primary Beneficiary Variable Interest Income Statement Items [Table Text Block]	'
		Fiscal Year Ended March 31,
		2014				2013				2012
	Revenue	$	1,324,483			$	1,161,988			$	1,044,060
	Operating income (loss)	49,061				58,587				(16,543		)
	Net income (loss) (1)	113,974				(115,281		)		(151,707		)
Equity And Cost Method Investments [Table Text Block]	'
		March 31,
		2014			2013			2014				2013
								(In thousands)
	Cost Method:
	PAS	25	%		25	%		$	6,286			$	6,286
	Equity Method:
	Cougar (1)	40	%		40	%		61,570				60,517
	FB Entities (2)	—	%		50	%		—				8,569
	Líder (1)	42.5	%		42.5	%		193,345				196,078
	Other							1,414				673
	Total							$	262,615			$	272,123
Schedule Of Earnings From Unconsolidated Affiliates [Table Text Block]	'
		Fiscal Year Ended March 31,
		2014				2013				2012
	Dividends from entities accounted for under the cost method:
	PAS	$	4,043			$	28			$	2,060
	Other	—				—				337
		4,043				28				2,397
	Earnings, net of losses, from entities accounted for under the equity method:
	Cougar	1,053				(736		)		—
	FB Entities	3,217				10,517				11,014
	Líder	2,898				14,762				(3,280		)
	Other	1,498				499				548
		8,666				25,042				8,282
	Total	$	12,709			$	25,070			$	10,679
Schedule Of Combined Financial Information For Unconsolidated Affiliates [Table Text Block]	'
		March 31,
		2014				2013
		(Unaudited)				(Unaudited)
	Current assets	$	216,345			$	262,741
	Non-current assets	440,470				553,562
	Total assets	$	656,815			$	816,303
	Current liabilities	$	171,604			$	197,121
	Non-current liabilities	274,907				369,059
	Equity	210,304				250,123
	Total liabilities and equity	$	656,815			$	816,303
		Fiscal Year Ended March 31,
		2014				2013				2012
		(Unaudited)				(Unaudited)				(Unaudited)
	Revenue	$	632,832			$	578,175			$	526,216
	Gross profit	$	132,760			$	126,007			$	95,508
	Net income	$	21,728			$	57,712			$	23,926

PROPERTY_AND_EQUIPMENT_PROPERT

PROPERTY AND EQUIPMENT PROPERTY AND EQUIPMENT (Tables)	12 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Capital expenditures [Table Text Block]	'
			Fiscal Year Ended March 31,
			2014			2013			2012
		Number of aircraft delivered:
		Medium	10			2			1
		Large	11			17			9
		Fixed Wing	—			—			1
		Total aircraft	21			19			11
		Capital expenditures (in thousands):
		Aircraft and related equipment (1)	$	563,724		$	504,329		$	304,484
		Other	64,889			67,096			21,936
		Total capital expenditures (2)	$	628,613		$	571,425		$	326,420
PROPERTY SOLD AND DISPOSED [Table Text Block]	'
			Fiscal Year Ended March 31,
			2014			2013			2012
			(In thousands, except for number of aircraft)
		Number of aircraft sold or disposed of (1)	46			27			38
		Proceeds from sale or disposal of assets (1)	$	289,951		$	314,847		$	239,843
		Gain (loss) from sale or disposal of assets (2)	$	6,092		$	3,708		$	(5,392	)
		Number of aircraft impaired	11			10			19
		Impairment charges on aircraft held for sale (3)	$	(6,814	)	$	(4,362	)	$	(26,278	)

DEBT_Tables

DEBT (Tables)	12 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Schedule of debt	'
		March 31,
		2014			2013
	6 ¼% Senior Notes due 2022	$	450,000		$	450,000
	Term Loan	226,604			230,625
	3% Convertible Senior Notes due 2038, including $5.1 million and $8.8 million of unamortized discount, respectively	109,904			106,196
	Revolving Credit Facility	24,000			—
	Eastern Airways debt	29,911			—
	Other debt	883			448
	Total debt	841,302			787,269
	Less short-term borrowings and current maturities of long-term debt	(14,207		)	(22,323		)
	Total long-term debt	$	827,095		$	764,946
Schedule of convertible debt	'
		March 31,			March 31,
		2014			2013
	Equity component – net carrying value	$	14,905		$	14,905
	Debt component:
	Face amount due at maturity	$	115,000		$	115,000
	Unamortized discount	(5,096		)	(8,804		)
	Debt component – net carrying value	$	109,904		$	106,196
Schedule of convertible debt interest expense	'
		Fiscal Year Ended
		March  31,
		2014			2013			2012
	Contractual coupon interest	$	3,450		$	3,450		$	3,450
	Amortization of debt discount	3,708			3,597			3,380
	Total interest expense	$	7,158		$	7,047		$	6,830
Schedule of maturities of debt	'
	Fiscal year ending March 31
	2015	$	14,207
	2016	16,721
	2017	25,176
	2018	26,623
	2019	30,191
	Thereafter	734,042
		$	846,960

FAIR_VALUE_DISCLOSURES_Tables

FAIR VALUE DISCLOSURES (Tables)	12 Months Ended
	Mar. 31, 2014													Mar. 31, 2013
Fair Value Disclosures [Abstract]	'													'
Schedule of fair value assets measured on non-recurring basis	'													'
		Quoted Prices			Significant		Significant		Balance as of March 31, 2014		Total Loss for				Quoted Prices		Significant		Significant		Balance as of		Total Gain
		in Active			Other		Unobservable				Fiscal Year				in Active		Other		Unobservable		March 31, 2013		(Loss) for
		Markets for			Observable		Inputs				2014				Markets for		Observable		Inputs				Fiscal Year
		Identical			Inputs		(Level 3)								Identical		Inputs		(Level 3)				2013
		Assets			(Level 2)										Assets		(Level 2)
		(Level 1)													(Level 1)
	Inventories	$	—		$	50,505	$	—	$	50,505	$	(12,669	)	Aircraft and equipment	$	—	$	14,385	$	—	$	14,385	$	8,722
	Assets held for sale	—			16,050		—		16,050		(6,814		)	Assets held for sale	—		1,600		—		1,600		(4,362		)
	Total assets	$	—		$	66,555	$	—	$	66,555	$	(19,483	)	Total assets	$	—	$	15,985	$	—	$	15,985	$	4,360
Schedule of fair value assets measured on recurring basis	'													'
		Quoted Prices			Significant		Significant		Balance as of March 31, 2014		Balance Sheet				Quoted Prices		Significant		Significant		Balance as of		Balance Sheet
		in Active			Other		Unobservable				Classification				in Active		Other		Unobservable		March 31, 2013		Classification
		Markets for			Observable		Inputs								Markets for		Observable		Inputs
		Identical			Inputs		(Level 3)								Identical		Inputs		(Level 3)
		Assets			(Level 2)										Assets		(Level 2)
		(Level 1)													(Level 1)
	Rabbi Trust investments	$	6,599		$	—	$	—	$	—	Other assets			Rabbi Trust investments	$	4,837	$	—	$	—	$	4,837	Other assets
	Total assets	$	6,599		$	—	$	—	$	—				Total assets	$	4,837	$	—	$	—	$	4,837
	Contingent consideration (1)	$	—		$	—	$	31,322	$	31,322	Other liabilities			Contingent consideration (1)	$	—	$	—	$	35,625	$	35,625	Other liabilities
											and deferred credits												and deferred credits
	Total liabilities	$	—		$	—	$	31,322	$	31,322				Total liabilities	$	—	$	—	$	35,625	$	35,625
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	'													'
		Significant
		Unobservable
		Inputs (Level 3)
	Contingent consideration:
	Balance as of March 31, 2013	$	35,625
	Change in fair value of contingent consideration	1,697
	Payment of Cougar first year earn-out	(6,000		)
	Balance as of March 31, 2014	$	31,322
Schedule of fair value of debt	'													'
		March 31,
		2014					2013
		Carrying			Fair Value		Carrying		Fair Value
		Value					Value
	6 ¼% Senior Notes	$	450,000		$	477,000	$	450,000	$	484,875
	Term Loan	226,604			226,604		230,625		230,625
	3% Convertible Senior Notes	109,904			142,382		106,196		131,819
	Revolving Credit Facility	24,000			24,000		—		—
	Eastern Airways debt	29,911			29,911		—		—
	Other debt	883			883		448		448
		$	841,302		$	900,780	$	787,269	$	847,767

DERIVATIVE_FINANCIAL_INSTRUMEN2

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Mar. 31, 2012
Summary of Derivative Instruments [Abstract]	'
Schedule of derivative gains and losses	'
	Derivatives in Cash Flow	Amount of			Location of Gain (Loss)	Amount of		Location of Gain (Loss)	Amount of
	Hedging Relationships	Gain (Loss)			Reclassified from	Gain (Loss)		Recognized in Income on	Gain (Loss)
		Recognized in			Accumulated OCI into	Reclassified		Derivative (Ineffective	Recognized in
		Other			Income (Effective	from		Portion and Amount	Income on
		Comprehensive			Portion)	Accumulated		Excluded from	Derivative
		Income				OCI into		Effectiveness Testing)	(Ineffective
		(“OCI”) on				Income			Portion and
		Derivative				(Effective			Amount
		(Effective				Portion)			Excluded from
		Portion)							Effectiveness
									Testing)
	Foreign currency forward contracts	$	(2,150	)	Other income (expense), net	$	—	Other income (expense), net	$	—
		$	(2,150	)		$	—		$	—

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Aircraft Purchase Contracts Table	'
		Fiscal Year Ending March 31,
		2015			2016				2017			2018 and			Total
												beyond
	Commitments as of March 31, 2014: (1)
	Number of aircraft:
	Medium	10			—				—			—			10
	Large (2)	13			6				3			—			22
	SAR configured	5			6				—			—			11
		28			12				3			—			43
	Related expenditures (in thousands)(3)
	Medium and large	$	373,755		$	89,741			$	37,587		$	—		$	501,083
	SAR configured	106,704			99,690				—			—			206,394
		$	480,459		$	189,431			$	37,587		$	—		$	707,477
	Options as of March 31, 2014: (2)
	Number of aircraft:
	Medium	—			7				7			7			21
	Large (2)	—			8				14			12			34
		—			15				21			19			55
	Related expenditures (in thousands)(3)	$	88,831		$	350,145			$	422,100		$	263,043		$	1,124,119
Rollforward schedule of aircraft purchase orders and options	'
		Fiscal Year Ended March 31,
		2014					2013					2012
		Orders		Options			Orders			Options		Orders		Options
	Beginning of fiscal year	45		70			15			40		6		31
	Aircraft delivered	(21	)	—			(8	)		—		(9	)	—
	Aircraft ordered	18		—			26			—		13		—
	New options	—		—			—			42		—		31
	Exercised options	8		(8	)		12			(12	)	7		(7	)
	Expired options	—		(7	)		—			—		—		(15	)
	Orders assigned subject to leaseback (1)	(7	)	—			—			—		(2	)	—
	End of fiscal year	43		55			45			70		15		40
Schedule of future minimum payments for operating leases	'
		Aircraft			Other				Total
	Fiscal year ending March 31,
	2015	$	94,796		$	9,482			$	104,278
	2016	87,937			7,711				95,648
	2017	83,372			6,675				90,047
	2018	66,071			5,596				71,667
	2019	44,149			5,343				49,492
	Thereafter	44,376			39,899				84,275
		$	420,701		$	74,706			$	495,407
Aircraft Lease Table	'
	:
	End of Lease Term	Number		Monthly Lease Payment
		of Aircraft		(in thousands)
	Fiscal year 2015 to fiscal year 2016	9		$	1,023
	Fiscal year 2017 to fiscal year 2019	26		4,264
	Fiscal year 2020 to fiscal year 2024	26		2,751
		61		$	8,038

TAXES_Tables

TAXES (Tables)	12 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Schedule of deferred tax assets and liabilities	'
		March 31,
		2014				2013
	Deferred tax assets:
	Foreign tax credits	$	17,628			$	10,483
	Net operating losses	15,627				—
	Accrued pension liability	18,531				29,951
	Maintenance and repair	12,674				10,291
	Accrued equity compensation	11,627				11,607
	Deferred revenue	2,124				2,212
	Employee award programs	6,289				4,237
	Employee payroll accruals	4,845				4,494
	Other	3,188				6,348
	Valuation allowance	(6,896		)		—
	Total deferred tax assets	$	85,637			$	79,623
	Deferred tax liabilities:
	Property and equipment	$	(205,104	)		$	(189,482	)
	Inventories	(6,956		)		(11,068		)
	Investment in unconsolidated affiliates	(8,985		)		(11,681		)
	Employee programs	(1,895		)		—
	Other	(9,195		)		(6,912		)
	Total deferred tax liabilities	$	(232,135	)		$	(219,143	)
	Net deferred tax liabilities	$	(146,498	)		$	(139,520	)
Schedule of income before income tax, domestic and foreign	'
		Fiscal Year Ended March 31,
		2014				2013				2012
	Domestic	$	(14,357	)		$	2,472			$	(1,100	)
	Foreign	259,348				164,205				80,542
	Total	$	244,991			$	166,677			$	79,442
Schedule of components of income tax expense (benefit)	'
		Fiscal Year Ended March 31,
		2014				2013				2012
	Current:
	Domestic	$	36,872			$	1,638			$	27
	Foreign	33,939				26,275				23,059
		$	70,811			$	27,913			$	23,086
	Deferred:
	Domestic	$	(6,646	)		$	1,619			$	1,658
	Foreign	(6,953		)		5,470				(10,543		)
		$	(13,599	)		$	7,089			$	(8,885	)
	Total	$	57,212			$	35,002			$	14,201
Schedule of effective income tax rate reconciliation	'
		Fiscal Year Ended March 31,
		2014			2013			2012
	Statutory rate	35	%		35	%		35	%
	Net foreign tax on non-U.S. earnings	11.8	%		14.4	%		20.4	%
	Foreign earnings indefinitely reinvested abroad	(18.9	)%		(28.4	)%		(26.3	)%
	Change in valuation allowance	1.8	%		—	%		—	%
	Foreign earnings that are currently taxed in the U.S.	4.1	%		4.6	%		5.9	%
	Effect of reduction in U.K. corporate income tax rate	(1.2	)%		(1.7	)%		(2.3	)%
	Dividend inclusion as a result of internal realignment	1.1	%		—	%		16.6	%
	Benefit of prior year foreign tax credits	—	%		—	%		(5.3	)%
	Benefit of current year foreign tax credits	(5.2	)%		(5.5	)%		(9.8	)%
	Tax reserve release	(0.7	)%		—	%		(7.7	)%
	Other, net	(4.4	)%		2.6	%		(8.6	)%
	Effective tax rate	23.4	%		21	%		17.9	%
Schedule of years open by jurisdiction	'
	Jurisdiction	Years Open
	U.S.	Fiscal year 2012 to present
	U.K.	Fiscal year 2012 to present
	Nigeria	Fiscal year 2005 to present
	Trinidad	Fiscal year 2005 to present
Rollforward of unrecognized tax benefits	'
		Fiscal Year Ended
		March 31,
		2014				2013
	Unrecognized tax benefits – beginning of fiscal year	$	1,710			$	1,523
	Increases for tax positions taken in prior years	129				348
	Decreases for tax positions taken in prior years	(1,434		)		(161		)
	Decrease related to settlements with authorities	(218		)		—
	Unrecognized tax benefits – end of fiscal year	$	187			$	1,710

EMPLOYEE_BENEFIT_PLANS_Tables

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Mar. 31, 2014															Mar. 31, 2013
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'															'
Schedule of Accumulated and Projected Benefit Obligations	'															'
		Fiscal Year Ended
		March 31,
		2014				2013
		(In thousands)
	Change in benefit obligation:
	Projected benefit obligation (PBO) at beginning of period	$	606,313			$	561,633
	Service cost	7,886				8,209
	Interest cost	26,861				25,683
	Actuarial loss	(29,313		)		63,393
	Benefit payments and expenses	(23,234		)		(23,652		)
	Effect of exchange rate changes	49,128				(28,953		)
	Projected benefit obligation (PBO) at end of period	$	637,641			$	606,313
Schedule of Change in Plan Assets	'															'
	Change in plan assets:
	Market value of assets at beginning of period	$	479,666			$	449,891
	Actual return on assets	23,630				47,974
	Employer contributions	28,974				28,607
	Benefit payments and expenses	(23,234		)		(23,652		)
	Effect of exchange rate changes	41,782				(23,154		)
	Market value of assets at end of period	$	550,818			$	479,666
Schedule of Net Funded Status	'															'
	Reconciliation of funded status:
	Accumulated benefit obligation (ABO)	$	611,782			$	582,047
	Projected benefit obligation (PBO)	$	637,641			$	606,313
	Fair value of assets	(550,818		)		(479,666		)
	Net recognized pension liability	$	86,823			$	126,647
	Amounts recognized in accumulated other comprehensive loss	$	232,848			$	244,322
Schedule of components of net periodic pension cost	'															'
		Fiscal Year Ended March 31,
		2014				2013				2012
		(In thousands)
	Components of net periodic pension cost:
	Service cost for benefits earned during the period	$	7,886			$	8,209			$	6,332
	Interest cost on PBO	26,861				25,683				28,208
	Expected return on assets	(29,282		)		(29,068		)		(29,639		)
	Amortization of unrecognized losses	7,705				6,612				5,386
	Net periodic pension cost	$	13,170			$	11,436			$	10,287
Schedule of Assumptions	'															'
		Fiscal Year Ended March 31,
		2014			2013			2012
	Discount rate	4.4	%		4.9	%		5.6	%
	Expected long-term rate of return on assets	6.29	%		6.9	%		7.2	%
	Pension increase rate	3.3	%		3	%		3.5	%
	Actuarial assumptions used to develop the components of the Norway plan were as follows:
		Fiscal Year Ended March 31,
		2014			2013			2012
	Discount rate	4	%		3.5	%		4.75	%
	Rate of compensation increase	4.25	%		4.25	%		4.5	%
	Social Security increase amount	4	%		4	%		4.25	%
	Expected return on plan assets	3.25	%		4.5	%		4.75	%
	Pension increase rate	1.25	%		0.75	%		1.75	%
Schedule of Investment Strategy	'															'
		Target Allocation						Actual Allocation
		as of March 31,						as of March 31,
	Asset Category	2014			2013			2014			2013
	Equity securities	57.8	%		58.3	%		59.1	%		64.6	%
	Debt securities	30.8	%		31.1	%		27.6	%		31	%
	Property	—	%		—	%		1.5	%		1.8	%
	Other assets	11.4	%		10.6	%		11.8	%		2.6	%
	Total	100	%		100	%		100	%		100	%
Schedule of Fair Value Hierarchy	'															'
		Quoted Prices				Significant				Significant				Balance as of			Quoted Prices		Significant		Significant		Balance as of
		in Active				Other				Unobservable				March 31,			in Active		Other		Unobservable		March 31,
		Markets for				Observable				Inputs				2014			Markets for		Observable		Inputs		2013
		Identical				Inputs				(Level 3)							Identical		Inputs		(Level 3)
		Assets				(Level 2)											Assets		(Level 2)
		(Level 1)															(Level 1)
	Cash and cash equivalents	$	48,685			$	—			$	—			$	48,685	Cash and cash equivalents	$	1,973	$	—	$	—	$	1,973
	Equity investments - U.K.	—				118,712				—				118,712		Equity investments - U.K.	—		119,626		—		119,626
	Equity investments - Non-U.K.	—				96,537				—				96,537		Equity investments - Non-U.K.	—		89,720		—		89,720
	Diversified growth (absolute return) funds	—				105,207				—				105,207		Diversified growth (absolute return) funds	—		94,426		—		94,426
	Government debt securities	—				51,853				—				51,853		Government debt securities	—		61,028		—		61,028
	Corporate debt securities	—				68,526				—				68,526		Corporate debt securities	—		63,304		—		63,304
	Insurance policies	—				—				61,298				61,298		Insurance policies	—		—		49,589		49,589
	Total investments	$	48,685			$	440,835			$	61,298			$	550,818	Total investments	$	1,973	$	428,104	$	49,589	$	479,666
Rollforward of Level 3 Fair Value Changes	'															'
	March 31, 2013	$	49,589
	Actual return on assets	7,514
	Net purchases, sales and settlements	5,479
	Effect of exchange rate changes	(1,284		)
	31-Mar-14	$	61,298
Future benefit payments	'															'
	Projected Benefit Payments by the Plans for Fiscal Years Ending March 31,	Payments
	2015	$	27,229
	2016	28,464
	2017	29,381
	2018	30,305
	2019	31,230
	Aggregate 2020 - 2024	167,674
Schedule of Stock Option Activity	'															'
		Weighted Average Exercise Prices				Number of Shares			Weighted Average Remaining Contractual Life			Aggregate Intrinsic Value
												(in thousands)
	Outstanding at March 31, 2013	$	40.03			1,150,519
	Granted	62.66				302,678
	Exercised	35.51				(433,608	)
	Expired or forfeited	51.49				(17,433	)
	Outstanding at March 31, 2014	48.62				1,002,156			6.95			$	15,228
	Exercisable at March 31, 2014	43.22				471,431			5.13			$	26,956
Schedule of Black Scholes Assumptions [Table Text Block]	'															'
		Fiscal Year Ended
		March 31,
		2014				2013				2012
	Risk free interest rate	1.01		%		0.75		%		1.5		%
	Expected life (years)	5				5				6
	Volatility	48.7		%		50.2		%		47.1		%
	Dividend yield	1.6		%		1.83		%		1.37		%
	Weighted average grant-date fair value of options granted	$	23.77			$	16.73			$	17.32
Schedule of Non-Vested Restricted Stock and Restricted Stock Units	'															'
		Units			Weighted
					Average
					Grant Date Fair
					Value per Unit
	Non-vested as of March 31, 2013	500,029			$	38.63
	Granted	232,364			64.99
	Forfeited	(34,554	)		57.3
	Vested	(238,122	)		35.59
	Non-vested as of March 31, 2014	459,717			52.13

STOCKHOLDERS_INVESTMENT_EARNIN1

STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME (TABLES)	12 Months Ended
	Mar. 31, 2014
Stockholders' Investment, Earnings Per Share and Accumulated Other Comprehensive Income [Abstract]	'
Rollforward schedule of Common Stock	'
		Shares			Weighted Average
					Price Per Share
	Outstanding as of March 31, 2012	35,755,317
	Exercise of stock options	416,936			$	36.67
	Issuance of restricted stock and restricted stock units	29,667			51.79
	Repurchases of common stock	(24,709	)		49.3
	Other	(26,572	)		39.63
	Outstanding as of March 31, 2013	36,150,639
	Exercise of stock options	433,608			35.51
	Issuance of restricted stock	167,797			67.27
	Repurchases of common stock	(1,043,875	)		74.4
	Other	300			65.09
	Outstanding as of March 31, 2014	35,708,469
Schedule of antidilutive securities	'
		Fiscal Year Ended March 31,
		2014				2013			2012
	Options:
	Outstanding	297,595				469,289			267,669
	Weighted average exercise price	$	43.59			$	43.88		$	30.16
	Restricted stock units:
	Outstanding	—				—			80,978
	Weighted average price	$	—			$	—		$	46.82
	Restricted stock awards:
	Outstanding	7,416				171			—
	Weighted average price	$	70.9			$	48.14		$	—
Schedule of earnings per share	'
		Fiscal Year Ended March 31,
		2014				2013			2012
	Earnings (in thousands):
	Income available to common stockholders – basic	$	186,737			$	130,102		$	63,530
	Interest expense on assumed conversion of 3% Convertible Senior Notes, net of tax (1)	—				—			—
	Income available to common stockholders – diluted	$	186,737			$	130,102		$	63,530
	Shares:
	Weighted average number of common shares outstanding – basic	36,283,853				36,010,191			36,068,884
	Assumed conversion of 3% Convertible Senior Notes outstanding during the period (1)	—				—			—
	Net effect of dilutive stock options, restricted stock units and restricted stock awards based on the treasury stock method	412,911				479,821			698,537
	Weighted average number of common shares outstanding – diluted	36,696,764				36,490,012			36,767,421
	Basic earnings per common share	$	5.15			$	3.61		$	1.76
	Diluted earnings per common share	$	5.09			$	3.57		$	1.73
Schedule of accumulated other comprehensive income	'
		Currency Translation Adjustments				Pension Liability Adjustments (1)			Unrealized loss on cash flow hedges			Total
	Balance as of March 31, 2011	$	35,543			$	(167,810	)	$	2,150		$	(130,117	)
	Other comprehensive income before reclassification	905				(32,099		)	(2,150		)	(33,344		)
	Reclassified from accumulated other comprehensive income	—				4,222			—			4,222
	Net current period other comprehensive income	905				(27,877		)	(2,150		)	(29,122		)
	Foreign exchange rate impact	(6,098		)		6,098			—			—
	Balance at March 31, 2012	30,350				(189,589		)	—			(159,239		)
	Other comprehensive income before reclassification	(11,982		)		(33,418		)	—			(45,400		)
	Reclassified from accumulated other comprehensive income	—				4,956			—			4,956
	Net current period other comprehensive income	(11,982		)		(28,462		)	—			(40,444		)
	Foreign exchange rate impact	(3,679		)		3,679			—			—
	Balance at March 31, 2013	14,689				(214,372		)	—			(199,683		)
	Other comprehensive income before reclassification	19,810				17,063			—			36,873
	Reclassified from accumulated other comprehensive income	—				6,304			—			6,304
	Net current period other comprehensive income	19,810				23,367			—			43,177
	Foreign exchange rate impact	23,313				(23,313		)	—			—
	Balance at March 31, 2014	$	57,812			$	(214,318	)	$	—		$	(156,506	)

SEGMENT_INFORMATION_Tables

SEGMENT INFORMATION (Tables)	12 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Schedule of revenue by segment	'
			Fiscal Year Ended March 31,
			2014			2013			2012
	Business unit gross revenue from external clients:
	Europe		$	740,316		$	619,480		$	559,306
	West Africa		328,793			296,933			258,258
	North America		230,337			226,114			176,797
	Australia		168,424			186,752			162,727
	Other International		134,021			132,662			145,593
	Corporate and other		67,691			46,532			39,122
	Total business unit gross revenue		$	1,669,582		$	1,508,473		$	1,341,803
	Intra-business unit gross revenue:
	Europe		$	—		$	65		$	391
	North America		3			283			1,020
	Australia		—			—			462
	Corporate and other		4,452			1,989			(133		)
	Total intra-business unit gross revenue		$	4,455		$	2,337		$	1,740
	Consolidated gross revenue reconciliation:
	Europe		$	740,316		$	619,545		$	559,697
	West Africa		328,793			296,933			258,258
	North America		230,340			226,397			177,817
	Australia		168,424			186,752			163,189
	Other International		134,021			132,662			145,593
	Corporate and other		72,143			48,521			38,989
	Intra-business unit eliminations		(4,455		)	(2,337		)	(1,740		)
	Total consolidated gross revenue		$	1,669,582		$	1,508,473		$	1,341,803
Schedule of earnings from unconsolidated affiliates- equity method investments by segment	'
			Fiscal Year Ended March 31,
			2014			2013			2012
	Earnings from unconsolidated affiliates, net of losses – equity method investments:
	Europe (1)		$	4,446		$	10,517		$	11,014
	North America		1,053			(736		)	—
	Other International		3,167			15,261			(2,732		)
	Total earnings from unconsolidated affiliates, net of losses – equity method investments		$	8,666		$	25,042		$	8,282
Schedule of consolidated operating income loss	'
	Consolidated operating income (loss) reconciliation:
	Europe		$	114,729		$	111,785		$	94,277
	West Africa		80,053			70,315			63,768
	North America		32,255			27,538			8,378
	Australia		5,523			25,283			19,840
	Other International		33,769			45,201			36,343
	Corporate and other		(78,630		)	(64,046		)	(75,170		)
	Gain (loss) on disposal of assets		(722		)	8,068			(31,670		)
	Total consolidated operating income		$	186,977		$	224,144		$	115,766
Schedule of capital expenditures by segment	'
	Capital expenditures:
	Europe		$	38,294		$	175,270		$	66,016
	West Africa		24,324			11,501			13,375
	North America		24,427			201,439			53,367
	Australia		7,058			3,736			2,421
	Other International		28,136			33,147			48,498
	Corporate and other (2)		506,374			146,332			142,743
	Total capital expenditures		$	(628,613	)	$	571,425		$	326,420
Schedule of depreciation and amortization	'
	Depreciation and amortization:
	Europe		$	32,383		$	33,101		$	34,345
	West Africa		13,923			13,077			12,805
	North America		23,505			20,193			16,243
	Australia		8,728			9,995			11,352
	Other International		15,024			17,018			16,660
	Corporate and other		2,414			2,900			4,739
	Total depreciation and amortization		$	95,977		$	96,284		$	96,144
Schedule of identifiable assets	'
			March 31,
			2014			2013
	Identifiable assets:
	Europe		$	932,803		$	808,568
	West Africa		454,161			390,402
	North America		487,659			527,710
	Australia		260,483			245,757
	Other International		579,571			589,361
	Corporate and other (3)		683,580			388,894
	Total identifiable assets		$	3,398,257		$	2,950,692
Schedule Of Equity Method Investments	'
			March 31,
			2014			2013
	Investments in unconsolidated affiliates – equity method investments:
	Europe		$	1,067		$	8,569
	North America		61,570			60,517
	Other International		193,692			196,751
	Total investments in unconsolidated affiliates – equity method investments		$	256,329		$	265,837
	___________
	(1)	On July 14, 2013, we sold our 50% interest in the FB Entities. See Note 3 for further discussion.
	(2)	Includes $494.5 million, $140.1 million and $111.9 million of construction in progress payments that were not allocated to business units in fiscal years 2014, 2013 and 2012, respectively.
	(3)	Includes $477.9 million and $222.8 million of construction in progress within property and equipment on our consolidated balance sheets as of March 31, 2014 and 2013, respectively, which primarily represents progress payments on aircraft to be delivered in future periods.
Schedule of revenue by country	'
				Fiscal Year Ended March 31,
				2014			2013			2012
		Gross revenue:
		United Kingdom		$	526,149		$	383,398		$	345,405
		Nigeria		328,793			296,933			258,258
		Norway		253,651			249,023			200,926
		United States		225,650			237,311			208,931
		Australia		168,424			186,752			162,727
		Trinidad		51,770			43,763			39,478
		Canada		32,895			16,447			—
		Malaysia		14,316			25,284			26,416
		Other countries		67,934			69,562			99,662
				$	1,669,582		$	1,508,473		$	1,341,803
Schedule of long-lived assets by country	'
			March 31,
			2014			2013
	Long-lived assets:
	United Kingdom		$	544,113		$	394,557
	Nigeria		256,239			242,095
	Canada		199,861			211,316
	Australia		188,370			180,914
	Norway		155,690			162,591
	United States		128,124			183,890
	Brazil		123,439			113,562
	Malaysia		61,104			101,764
	Trinidad		64,520			51,004
	Tanzania		42,589			—
	Other countries		26,769			56,562
	Construction in progress attributable to aircraft (1)		477,933			222,817
			$	2,268,751		$	1,921,072

QUARTERLY_FINANCIAL_INFORMATIO1

QUARTERLY FINANCIAL INFORMATION (Unaudited) (Tables)	12 Months Ended
	Mar. 31, 2014
Quarterly Financial Data [Abstract]	'
Schedule of Quarterly Financial Information	'
		Fiscal Quarter Ended
		June 30(1)(2)		September 30  (3)(4)		December 31  (5)(6)		March 31  (7)(8)
		(In thousands, except per share amounts)
	Fiscal Year 2014
	Gross revenue	$	398,994	$	417,328	$	412,335	$	440,925
	Operating income (9)	56,119		53,935		29,502		47,421
	Net income attributable to Bristow Group (9)	26,886		110,606		18,927		30,318
	Earnings per share:
	Basic	$	0.74	$	3.04	$	0.52	$	0.84
	Diluted	$	0.74	$	3.01	$	0.51	$	0.83
	Fiscal Year 2013
	Gross revenue	$	362,608	$	365,754	$	388,469	$	391,642
	Operating income (9)	39,993		47,328		74,120		62,703
	Net income attributable to Bristow Group (9)	23,662		29,668		36,392		40,380
	Earnings per share:
	Basic	$	0.66	$	0.83	$	1.01	$	1.12
	Diluted	$	0.65	$	0.82	$	1	$	1.11

OPERATIONS_BASIS_OF_PRESENTATI3

OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)

3 Months Ended

12 Months Ended

12 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2011

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2012

Mar. 31, 2012

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Unconsolidated Affiliates [Member]

Credit Facility [Member]

First Amendment [Member]

First Amendment [Member]

Second Amendment [Member]

FB Entities [Member]

Client Contracts [Member]

Client Contracts [Member]

Client Relationships [Member]

Client Relationships [Member]

Trade Names and Trademarks [Member]

Trade Names and Trademarks [Member]

Internally developed software [Member]

Internally developed software [Member]

Licenses [Member]

Licenses [Member]

Europe [Member]

Europe [Member]

Bristow Academy [Member]

Bristow Academy [Member]

West Africa [Member]

West Africa [Member]

Other International [Member]

Other International [Member]

Assets Held For Sale [Member]

Assets Held For Sale [Member]

Assets Held For Sale [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Aircraft [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Damage from Fire, Explosion or Other Hazard [Member]

MEXICO

AS332L Aircraft [Member]

AS332L Aircraft [Member]

AS332L Aircraft [Member]

Fixed Wing Aircraft [Member]

Medium Aircraft [Member]

ATP Oil And Gas Corporation [Member]

UK SAR [Member]

Allowance for Doubtful Accounts [Member] Member

Allowance for Doubtful Accounts [Member] Member

Allowance for Doubtful Accounts [Member] Member

Inventory Valuation Reserve [Member]

Inventory Valuation Reserve [Member]

Inventory Valuation Reserve [Member]

Credit Facility [Member]

Credit Facility [Member]

Credit Facility [Member]

Assets Held For Sale [Member]

Assets Held For Sale [Member]

Assets Held For Sale [Member]

Aircraft [Member]

Building [Member]

Other Depreciable Assets [Member]

Aircraft [Member]

Building [Member]

Other Depreciable Assets [Member]

Assets Held For Sale [Member]

Valuation and Qualifying Accounts Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance- beginning of fiscal year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$5,079,000

$243,000

$99,000

$31,504,000

$34,364,000

$16,018,000

Impairment of inventories

'

'

'

'

'

'

'

'

12,669,000

0

25,919,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,669,000

0

25,919,000

Additional allowances

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,900,000

'

87,000

4,887,000

162,000

6,807,000

8,479,000

3,124,000

Write-offs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-92,000

-51,000

-18,000

-6,096,000

-10,053,000

-11,331,000

Foreign currency effects

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,414,000

-1,286,000

634,000

Balance- end of fiscal year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,074,000

5,079,000

243,000

47,298,000

31,504,000

34,364,000

Gain (loss) on disposal of assets

100,000

4,000,000

-3,100,000

-1,700,000

7,200,000

7,400,000

-1,300,000

-5,300,000

-722,000

8,068,000

-31,670,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,092,000

3,708,000

-5,392,000

'

'

'

'

'

'

'

'

'

-11,100,000

-1,000,000

'

-5,600,000

'

-1,100,000

'

'

'

'

'

'

'

'

'

Dormant, obsolete and excess inventory

50,500,000

'

'

'

'

'

'

'

50,500,000

'

48,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Insurance Recoveries

'

'

'

'

'

'

'

'

'

4,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepaid expenses and other current assets

53,084,000

'

'

'

35,095,000

'

'

'

53,084,000

35,095,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,500,000

'

'

'

'

'

'

Interest Expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,700,000

'

'

'

'

'

'

Property, Plant and Equipment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Construction in progress within property and equipment

477,900,000

'

'

'

222,800,000

'

'

'

477,900,000

222,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property Plant And Equipment Useful Life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'15 years

'40 years

'15 years

'5 years

'15 years

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, Plant and Equipment salvage value percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

30.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment of Long-Lived Assets to be Disposed of

'

'

'

'

'

'

'

'

6,800,000

4,400,000

26,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,814,000

4,362,000

26,278,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,300,000

'

2,700,000

'

'

'

'

'

'

'

'

Impairment Number

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11

10

19

'

'

'

'

'

'

'

'

'

'

5

1

2

'

'

'

'

'

'

'

'

Number of aircraft reclassed held for sale to property and equipment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

'

'

'

Gain from aircraft reclassed from held for sale to property and eqiupment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,700,000

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, Beginning Balance

'

'

'

28,897,000

'

'

'

29,644,000

28,897,000

29,644,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,883,000

12,554,000

10,212,000

10,260,000

6,226,000

6,254,000

576,000

576,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, Translation Adjustments

'

'

'

'

'

'

'

'

1,880,000

-747,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,839,000

-671,000

90,000

-48,000

-49,000

-28,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, Acquired During Period

'

'

'

'

'

'

'

'

26,479,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26,479,000

'

0

'

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, Impairment Loss

'

'

'

'

'

'

'

'

-576,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

0

'

0

'

-576,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, Ending Balance

56,680,000

'

'

'

28,897,000

'

'

'

56,680,000

28,897,000

29,644,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40,201,000

11,883,000

10,302,000

10,212,000

6,177,000

6,226,000

0

576,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount

4,800,000

'

'

'

'

'

'

'

4,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible Assets, Gross Beginning Balance

'

'

'

9,750,000

'

'

'

9,837,000

9,750,000

9,837,000

'

'

'

'

'

'

'

7,187,000

7,251,000

1,730,000

1,746,000

0

0

0

0

833,000

840,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets, Translation Adjustments

'

'

'

'

'

'

'

'

-78,000

-87,000

'

'

'

'

'

'

'

-58,000

-64,000

-14,000

-16,000

0

0

0

0

-6,000

-7,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-lived Intangible Assets Acquired

'

'

'

'

'

'

'

'

16,956,000

'

'

'

'

'

'

'

'

0

'

10,291,000

'

5,326,000

'

1,339,000

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible Assets, Gross Ending Balance

26,628,000

'

'

'

9,750,000

'

'

'

26,628,000

9,750,000

9,837,000

'

'

'

'

'

'

7,129,000

7,187,000

12,007,000

1,730,000

5,326,000

0

1,339,000

0

827,000

833,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization of Intangible Assets- Beginning Balance

'

'

'

-6,808,000

'

'

'

-5,231,000

-6,808,000

-5,231,000

'

'

'

'

'

'

'

-5,662,000

-4,345,000

-758,000

-582,000

0

0

0

0

-388,000

-304,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of Intangible Assets

'

'

'

'

'

'

'

'

-1,521,000

-1,577,000

'

'

'

'

'

'

'

-1,270,000

-1,317,000

-170,000

-176,000

0

0

0

0

-81,000

-84,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization of Intangible Assets- Ending Balance

-8,329,000

'

'

'

-6,808,000

'

'

'

-8,329,000

-6,808,000

-5,231,000

'

'

'

'

'

'

-6,932,000

-5,662,000

-928,000

-758,000

0

0

0

0

-469,000

-388,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Remaining Contractual Life, in Years

'

'

'

'

'

'

'

'

'12 years 0 months 0 days

'

'

'

'

'

'

'

'

'0 years 0 months 73 days

'

'20 years

'

'15 years

'

'5 years

'

'4 years 0 months 146 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future Amortization Expense, Year One

1,586,000

'

'

'

'

'

'

'

1,586,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future Amortization Expense, Year Two

1,389,000

'

'

'

'

'

'

'

1,389,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future Amortization Expense, Year Three

1,389,000

'

'

'

'

'

'

'

1,389,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future Amortization Expense, Year Four

1,389,000

'

'

'

'

'

'

'

1,389,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future Amortization Expense, Year Five

1,279,000

'

'

'

'

'

'

'

1,279,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future Amortization Expense, After Year Five

11,267,000

'

'

'

'

'

'

'

11,267,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future Amortization Expense, Total

18,299,000

'

'

'

'

'

'

'

18,299,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft operated

'

'

'

'

'

'

'

'

494

'

'

131

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepaid expenses and other current assets

53,084,000

'

'

'

35,095,000

'

'

'

53,084,000

35,095,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,500,000

'

'

'

'

'

'

Interest Expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,700,000

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

175,000,000

200,000,000

200,000,000

350,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unamortized debt issuance expense

11,400,000

'

'

'

11,200,000

'

'

'

11,400,000

11,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Tax Assets, Net, Noncurrent

17,600,000

'

'

'

11,600,000

'

'

'

17,600,000

11,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Contract Acquisition Cost, Non Current

15,200,000

'

'

'

9,700,000

'

'

'

15,200,000

9,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Sale Leaseback Advance Total

166,300,000

'

'

'

'

'

'

'

166,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred sale leaseback advance - current

136,930,000

'

'

'

0

'

'

'

136,930,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Sale Leaseback Advance - Long-term

29,400,000

'

'

'

'

'

'

'

29,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from assignment of aircraft purchase agreements

'

'

'

'

'

'

'

'

106,113,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Aircraft Assigned Future Payments

'

'

'

'

'

'

'

'

7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Sale Leaseback Progress Payments

'

'

'

'

'

'

'

'

60,194,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign currency transaction gain/loss

'

'

'

'

'

'

'

'

-3,700,000

-1,100,000

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impact of Foreign Exchange Rates on Unconsolidated affiliates

'

'

'

'

'

'

'

'

-3,900,000

-3,900,000

-8,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Extinguishment of debt

'

'

'

'

'

'

'

'

0

14,932,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Income (Expense)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

ACQUISITIONS_Details

ACQUISITIONS (Details)

3 Months Ended

12 Months Ended

12 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Feb. 06, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Eastern Airways International Limited

Eastern Airways International Limited

Eastern Airways International Limited

Eastern Airways International Limited

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

Bristow Aviation Holdings Limited [Member]

USD ($)

GBP (£)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership percentage in Variable Interest Entity

'

'

'

'

'

'

'

'

'

'

'

60.00%

60.00%

'

'

49.00%

49.00%

'

Acquisition cost

'

'

'

'

'

'

'

'

'

'

'

$44,000,000

£ 27,000,000

'

'

'

'

'

Potential earn-out payments

0

'

'

'

34,245,000

'

'

'

0

34,245,000

0

10,000,000

6,000,000

'

'

'

'

'

Potential earn-out payment period

'

'

'

'

'

'

'

'

'

'

'

'three

'three

'

'

'

'

'

Assets, Current

721,607,000

'

'

'

675,758,000

'

'

'

721,607,000

675,758,000

'

'

'

'

21,117,000

625,210,000

454,778,000

'

Total property and equipment, net

2,268,751,000

'

'

'

1,921,072,000

'

'

'

2,268,751,000

1,921,072,000

'

'

'

'

63,391,000

217,969,000

157,066,000

'

Goodwill

56,680,000

'

'

'

28,897,000

'

'

'

56,680,000

28,897,000

29,644,000

'

'

'

26,479,000

41,218,000

12,810,000

'

Other Assets, Noncurrent

88,604,000

'

'

'

52,842,000

'

'

'

88,604,000

52,842,000

'

'

'

'

20,474,000

45,477,000

26,575,000

'

Total assets

3,398,257,000

'

'

'

2,950,692,000

'

'

'

3,398,257,000

2,950,692,000

'

'

'

'

131,461,000

931,288,000

660,321,000

'

Liabilities, Current

-457,825,000

'

'

'

-239,825,000

'

'

'

-457,825,000

-239,825,000

'

'

'

'

-37,644,000

-1,601,545,000

-1,351,155,000

'

Total long-term debt

-827,095,000

'

'

'

-764,946,000

'

'

'

-827,095,000

-764,946,000

'

'

'

'

-20,400,000

-172,391,000

-138,147,000

'

Other liabilities and deferred credits

-78,126,000

'

'

'

-57,196,000

'

'

'

-78,126,000

-57,196,000

'

'

'

'

-8,239,000

-2,252,000

-1,755,000

'

Total Liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-66,283,000

-1,898,357,000

-1,617,704,000

'

Temporary Equity

-22,283,000

'

'

'

0

'

'

'

-22,283,000

0

'

-22,283,000

'

'

-21,139,000

-22,283,000

0

'

Assets, Net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

44,039,000

'

'

'

Revenues

440,925,000

412,335,000

417,328,000

398,994,000

391,642,000

388,469,000

365,754,000

362,608,000

1,669,582,000

1,508,473,000

1,341,803,000

21,200,000

'

'

'

1,324,483,000

1,161,988,000

1,044,060,000

Temporary Equity, Carrying Amount, Attributable to Noncontrolling Interest [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Temporary Equity, Period Start

'

'

'

0

'

'

'

'

0

'

'

'

'

'

21,139,000

0

'

'

Temporary Equity, Net Income

'

'

'

'

'

'

'

'

700,000

'

'

671,000

'

'

'

'

'

'

Temporary Equity, Foreign Currency Translation Adjustments

'

'

'

'

'

'

'

'

500,000

'

'

473,000

'

'

'

'

'

'

Temporary Equity, Period End

22,283,000

'

'

'

0

'

'

'

22,283,000

0

'

22,283,000

'

'

21,139,000

22,283,000

0

'

Business Acquisition, Pro Forma Revenue

'

'

'

'

'

'

'

'

'

'

'

1,761,390,000

'

1,625,832,000

'

'

'

'

Business Acquisition, Pro Forma Net Income (Loss)

'

'

'

'

'

'

'

'

'

'

'

$188,921,000

'

$144,136,000

'

'

'

'

VARIABLE_INTEREST_ENTITIES_AND3

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

3 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

8 Months Ended

12 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2011

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

31-May-04

Mar. 31, 2014

31-May-04

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Dec. 31, 2013

Mar. 31, 2014

Nov. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

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]

Pan African Airlines Nigeria Ltd [Member]

Aviashelf Aviation Co. [Member]

Bristow Helicopter Leasing [Member]

Sakhalin Bristow Air Services [Member]

Petroleum Air Services [Member]

Petroleum Air Services [Member]

Petroleum Air Services [Member]

FB Entities [Member]

FB Entities [Member]

FB Entities [Member]

FB Entities [Member]

FB Entities [Member]

Lider [Member]

Lider [Member]

Lider [Member]

Lider [Member]

Lider [Member]

Lider [Member]

Lider [Member]

Lider [Member]

Cougar [Member]

Cougar [Member]

Cougar [Member]

Other Unconsolidated Significant Affiliates [Member]

Other Unconsolidated Significant Affiliates [Member]

Other Unconsolidated Significant Affiliates [Member]

USD ($)

USD ($)

USD ($)

GBP (£)

USD ($)

United Kingdom, Pounds

United Kingdom, Pounds

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

United States of America, Dollars

United Kingdom, Pounds

USD ($)

USD ($)

USD ($)

Tax Amnesty [Member]

Tax Amnesty [Member]

Tax Amnesty [Member]

Tax Amnesty [Member]

Tax Amnesty [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

GBP (£)

GBP (£)

USD ($)

GBP (£)

USD ($)

USD ($)

USD ($)

USD ($)

BRL

Variable Interest Entity [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership percentage in Variable Interest Entity

'

'

'

'

'

'

'

'

'

'

'

'

49.00%

49.00%

'

'

'

'

'

40.00%

50.17%

48.50%

51.00%

51.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase of deferred stock shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition, Share Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

£ 1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total amount paid for deferred shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$14,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount of subordinated unsecured loan stock

'

'

'

'

'

'

'

'

'

'

'

'

151,700,000

'

'

'

'

91,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate on unsecured loan

'

'

'

'

'

'

'

'

'

'

'

'

13.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred interest cost

'

'

'

'

'

'

'

'

'

'

'

'

1,300,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Call option price held by noncontrolling interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual guaranteed rate of return

'

'

'

'

'

'

'

'

'

'

'

'

'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 consolidated statements of income, with a corresponding increase in noncontrolling interest on our consolidated balance sheets. Prepayments of the guaranteed return element of the call option are reflected as a reduction in noncontrolling interest on our 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%B per annum.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Noncontrolling interests- beginning balance

'

'

'

9,891,000

'

'

'

'

9,891,000

'

'

'

1,492,000

1,577,000

1,582,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments to non-controlling interest shareholders

'

'

'

'

'

'

'

'

-57,000

-63,000

'

'

-57,000

-63,000

-63,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income attributable to noncontrolling interests

'

'

'

'

'

'

'

'

1,042,000

1,573,000

1,711,000

'

57,000

60,000

62,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Currency translation adjustments

'

'

'

'

'

'

'

'

18,729,000

-11,982,000

905,000

'

153,000

-82,000

-4,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Noncontrolling interests- ending balance

8,651,000

'

'

'

9,891,000

'

'

'

8,651,000

9,891,000

'

'

1,645,000

1,492,000

1,577,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

VIE Financial Information

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

204,341,000

'

'

'

215,623,000

'

'

'

204,341,000

215,623,000

261,550,000

116,361,000

173,490,000

93,227,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accounts Receivable Net Current

297,443,000

'

'

'

262,781,000

'

'

'

297,443,000

262,781,000

'

'

311,641,000

240,861,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventories

137,463,000

'

'

'

153,969,000

'

'

'

137,463,000

153,969,000

'

'

94,288,000

100,115,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepaid expenses and other current assets

53,084,000

'

'

'

35,095,000

'

'

'

53,084,000

35,095,000

'

'

45,791,000

20,575,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total current assets

721,607,000

'

'

'

675,758,000

'

'

'

721,607,000

675,758,000

'

'

625,210,000

454,778,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment in unconsolidated affiliates

262,615,000

'

'

'

272,123,000

'

'

'

262,615,000

272,123,000

'

'

1,414,000

9,092,000

'

'

'

'

'

'

'

'

'

'

6,286,000

6,286,000

'

0

8,569,000

'

'

'

193,345,000

196,078,000

'

'

'

'

'

'

61,570,000

60,517,000

'

1,414,000

673,000

'

Total property and equipment, net

2,268,751,000

'

'

'

1,921,072,000

'

'

'

2,268,751,000

1,921,072,000

'

'

217,969,000

157,066,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

56,680,000

'

'

'

28,897,000

'

'

'

56,680,000

28,897,000

29,644,000

'

41,218,000

12,810,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other assets

88,604,000

'

'

'

52,842,000

'

'

'

88,604,000

52,842,000

'

'

45,477,000

26,575,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total assets

3,398,257,000

'

'

'

2,950,692,000

'

'

'

3,398,257,000

2,950,692,000

'

'

931,288,000

660,321,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accounts payable current

89,818,000

'

'

'

69,821,000

'

'

'

89,818,000

69,821,000

'

'

182,892,000

128,591,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued Liabilities Current

204,498,000

'

'

'

147,681,000

'

'

'

204,498,000

147,681,000

'

'

1,405,401,000

1,214,209,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Tax Liabilities Current

12,372,000

'

'

'

0

'

'

'

12,372,000

0

'

'

3,588,000

7,907,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Short-term borrowings and current maturities of long-term debt

14,207,000

'

'

'

22,323,000

'

'

'

14,207,000

22,323,000

'

'

9,664,000

448,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total current liabilities

457,825,000

'

'

'

239,825,000

'

'

'

457,825,000

239,825,000

'

'

1,601,545,000

1,351,155,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total long-term debt

827,095,000

'

'

'

764,946,000

'

'

'

827,095,000

764,946,000

'

'

172,391,000

138,147,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued pension liabilities

86,823,000

'

'

'

126,647,000

'

'

'

86,823,000

126,647,000

'

'

86,824,000

126,647,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other liabilities and deferred credits

78,126,000

'

'

'

57,196,000

'

'

'

78,126,000

57,196,000

'

'

2,252,000

1,755,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred taxes

169,519,000

'

'

'

151,121,000

'

'

'

169,519,000

151,121,000

'

'

13,062,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity

210,304,000

'

'

'

250,123,000

'

'

'

210,304,000

250,123,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total Liabilities

'

'

'

'

'

'

'

'

'

'

'

'

1,898,357,000

1,617,704,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

440,925,000

412,335,000

417,328,000

398,994,000

391,642,000

388,469,000

365,754,000

362,608,000

1,669,582,000

1,508,473,000

1,341,803,000

'

1,324,483,000

1,161,988,000

1,044,060,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating income (loss)

'

'

'

'

'

'

'

'

'

'

'

'

49,061,000

58,587,000

-16,543,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

'

'

'

'

'

'

'

'

187,779,000

131,675,000

65,241,000

'

113,974,000

-115,281,000

-151,707,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft owned

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

45

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of helicopters in fleet

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

57

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft operated

'

'

'

'

'

'

'

'

494

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of fixed wing aircraft in fleet

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

29

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft leased from affiliates

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11

'

'

'

'

'

'

'

'

'

'

'

'

'

Option to acquire additional interest in affiliate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition equity interests issued or issuable number of shares issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40

'

'

'

'

Purchase price of interest in Equity Method Investment

'

'

'

'

'

'

'

'

0

51,179,000

2,378,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

250,000,000

'

'

'

'

Purchase price of interest in Equity Method investment previously paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,800,000

'

'

'

'

Net cash of outlay of equity method investment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

226,200,000

'

'

'

'

Payments For Contingent Consideration

'

'

'

'

'

'

'

'

6,000,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,000,000

'

'

'

'

'

Number of aircraft purchased to be operated

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8

'

'

'

'

Percentage of voting power acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20.00%

20.00%

'

'

'

'

'

'

25.00%

25.00%

'

'

'

'

Equity investment ownership percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25.00%

25.00%

'

0.00%

50.00%

'

'

'

42.50%

42.50%

'

'

'

'

'

'

40.00%

40.00%

'

'

'

'

Purchase price and transaction cost of equity method investment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

257,800,000

'

'

'

'

Proceeds from sales of joint ventures

'

'

'

'

'

'

'

'

112,210,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

112,200,000

74,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition transaction costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,800,000

'

'

'

'

Potential earn-out payments

0

'

'

'

34,245,000

'

'

'

0

34,245,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40,000,000

'

'

'

'

Potential earn-out payment period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3

'

'

'

'

Fair value of earn-out

31,322,000

'

'

'

35,625,000

'

'

'

31,322,000

35,625,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31,300,000

35,600,000

'

'

'

'

Income Taxes Paid

'

'

'

'

'

'

'

'

59,100,000

24,100,000

19,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

27,000,000

62,700,000

'

'

'

'

'

'

Tax Adjustments, Settlements, and Unusual Provisions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40,200,000

93,300,000

'

'

'

'

'

'

Reduction In Tax Assessment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

13,200,000

30,600,000

'

'

'

'

'

'

Cost Method Investment Dividends Or Distributions

'

'

'

'

'

'

'

'

4,043,000

28,000

2,397,000

'

'

'

'

'

'

'

'

'

'

'

'

'

4,043,000

28,000

2,060,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

337,000

Income (Loss) from Equity Method Investments

'

'

'

'

'

'

'

'

8,666,000

25,042,000

8,282,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,217,000

10,517,000

11,014,000

'

'

2,898,000

14,762,000

-3,280,000

-2,200,000

1,700,000

-17,100,000

-13,600,000

'

1,053,000

-736,000

0

1,498,000

499,000

548,000

Dividends from Equity Method Investments

'

'

'

'

'

'

'

'

10,300,000

16,200,000

14,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Earnings from unconsolidated affiliates, net of losses

'

'

'

'

'

'

'

'

12,709,000

25,070,000

10,679,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment in unconsolidated affiliates

262,615,000

'

'

'

272,123,000

'

'

'

262,615,000

272,123,000

'

'

1,414,000

9,092,000

'

'

'

'

'

'

'

'

'

'

6,286,000

6,286,000

'

0

8,569,000

'

'

'

193,345,000

196,078,000

'

'

'

'

'

'

61,570,000

60,517,000

'

1,414,000

673,000

'

Gain on sale of unconsolidated affiliate

'

'

'

'

'

'

'

'

103,924,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

103,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceed from indemnity due to tax assessment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,500,000

'

'

'

'

'

'

'

Summary of Combined Financial Information Equity Method Investments [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current Assets

216,345,000

'

'

'

262,741,000

'

'

'

216,345,000

262,741,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-current Assets

440,470,000

'

'

'

553,562,000

'

'

'

440,470,000

553,562,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total assets

656,815,000

'

'

'

816,303,000

'

'

'

656,815,000

816,303,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current Liabilities

171,604,000

'

'

'

197,121,000

'

'

'

171,604,000

197,121,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-current Liabilities

274,907,000

'

'

'

369,059,000

'

'

'

274,907,000

369,059,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Temporary Equity

22,283,000

'

'

'

0

'

'

'

22,283,000

0

'

'

22,283,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total liabilities and equity

656,815,000

'

'

'

816,303,000

'

'

'

656,815,000

816,303,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue

'

'

'

'

'

'

'

'

632,832,000

578,175,000

526,216,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

'

'

'

'

'

'

132,760,000

126,007,000

95,508,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

'

'

'

'

'

'

'

'

21,728,000

57,712,000

23,926,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Method Investment Realized Gain Loss On Disposal Net Of Tax

'

'

'

'

'

'

'

'

$67,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

PROPERTY_AND_EQUIPMENT_Details

PROPERTY AND EQUIPMENT (Details) (USD $)	3 Months Ended								12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Number of aircraft added	'	'	'	'	'	'	'	'	21	19	11
Capital expenditures	'	'	'	'	'	'	'	'	$628,613,000	$571,425,000	$326,420,000
Number of aircraft sold or disposed of	'	'	'	'	10	'	'	'	46	27	38
Proceeds from asset dispositions	'	'	'	'	'	'	'	'	289,951,000	314,847,000	239,843,000
Gain (loss) on disposal of assets	100,000	4,000,000	-3,100,000	-1,700,000	7,200,000	7,400,000	-1,300,000	-5,300,000	-722,000	8,068,000	-31,670,000
Insurance Recoveries	'	'	'	'	'	'	'	'	'	4,700,000	'
Sale price of the aircraft leaseback	'	'	'	'	'	'	'	'	246,400,000	255,800,000	171,200,000
Number of aircraft sale leaseback	'	'	'	'	'	'	'	'	14	11	9
Sale Leaseback Progress Payments	'	'	'	'	'	'	'	'	'	'	23,400,000
Sale Leaseback Progress Payments Number Of Aircraft	'	'	'	'	'	'	'	'	'	'	2
Proceeds from assignment of aircraft purchase agreements	'	'	'	'	'	'	'	'	106,113,000	0	0
Number Of Aircraft Assigned Future Payments	'	'	'	'	'	'	'	'	7	'	'
Deferred Sale Leaseback Progress Payments	'	'	'	'	'	'	'	'	60,194,000	0	0
Impairment of inventories	'	'	'	'	'	'	'	'	12,669,000	0	25,919,000
Impairment of Long-Lived Assets to be Disposed of	'	'	'	'	'	'	'	'	6,800,000	4,400,000	26,300,000
Number of aircraft transferred to held for sale	36	'	'	'	16	'	'	'	36	16	21
Increase (decrease) in property and equipment	'	'	'	'	'	'	'	'	-51,600,000	-13,900,000	-30,200,000
Assets held for sale	29,300,000	'	'	'	8,300,000	'	'	'	29,300,000	8,300,000	'
Cougar [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Capital expenditures	'	'	'	'	'	'	'	'	'	190,900,000	'
Damage from Fire, Explosion or Other Hazard [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Number of aircraft sold or disposed of	'	'	'	'	'	'	'	'	2	'	'
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	-11,100,000	'	'
Insurance Recoveries	'	'	'	'	'	'	'	'	11,100,000	'	'
Insurance Settlement [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	'	2,800,000	'
Creole, Louisiana [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Impairment from abandonment of certain assets	'	'	'	'	'	'	'	'	'	'	2,700,000
Assets Held For Sale [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Impairment of Long-Lived Assets to be Disposed of	'	'	'	'	'	'	'	'	6,814,000	4,362,000	26,278,000
Number of aircraft	'	'	'	'	'	'	'	'	16	7	'
Medium Aircraft [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Number of aircraft added	'	'	'	'	'	'	'	'	10	2	1
Impairment of Long-Lived Assets to be Disposed of	'	'	'	'	'	'	'	'	'	'	2,700,000
Impairment Number	'	'	'	'	'	'	'	'	'	'	2
Large Aircraft [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Number of aircraft added	'	'	'	'	'	'	'	'	11	17	9
Fixed Wing Aircraft [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Number of aircraft added	'	'	'	'	'	'	'	'	0	0	1
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	'	'	-1,100,000
Impairment Number	'	'	'	'	'	'	'	'	'	'	1
AS332L Aircraft [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Number of aircraft sold or disposed of	'	'	'	'	'	'	'	'	'	'	9
Proceeds from asset dispositions	'	'	'	'	'	'	'	'	'	'	28,900,000
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	'	'	-5,600,000
Number of aircraft reclassed held for sale to property and equipment	'	'	'	'	'	'	'	'	'	4	'
Gain from aircraft reclassed from held for sale to property and eqiupment	'	'	'	'	'	'	'	'	'	8,700,000	'
AS332L Aircraft [Member] | Assets Held For Sale [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Impairment of Long-Lived Assets to be Disposed of	'	'	'	'	'	'	'	'	'	'	23,300,000
Impairment Number	'	'	'	'	'	'	'	'	'	'	5
Impairment Number Title Transfer After	'	'	'	'	'	'	'	'	'	'	2
Aircraft and related equipment [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Capital expenditures	'	'	'	'	'	'	'	'	563,724,000	504,329,000	304,484,000
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	6,092,000	3,708,000	-5,392,000
Aircraft and related equipment [Member] | Assets Held For Sale [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Impairment Number	'	'	'	'	'	'	'	'	11	10	19
Other Depreciable Assets [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Capital expenditures	'	'	'	'	'	'	'	'	64,889,000	67,096,000	21,936,000
Construction in Progress [Member]	'	'	'	'	'	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Capital expenditures	'	'	'	'	'	'	'	'	$529,400,000	$312,700,000	$260,600,000

DEBT_Details

DEBT (Details) (USD $)

3 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

Dec. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2011

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2011

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2011

Mar. 31, 2011

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

16-May-14

Jun. 30, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Dec. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Sep. 30, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Term Loan And Revolving Credit Facility [Member]

Term Loan And Revolving Credit Facility [Member]

Term Loan And Revolving Credit Facility [Member]

Credit Facility [Member]

Credit Facility [Member]

Credit Facility [Member]

Credit Facility [Member]

Credit Facility [Member]

Letters Of Credit [Member]

Letters Of Credit [Member]

Five Year Term Loan [Member]

Five Year Term Loan [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Term Loan [Member]

Term Loan [Member]

Convertible Senior Notes Due 2038 [Member]

Convertible Senior Notes Due 2038 [Member]

Convertible Senior Notes Due 2038 [Member]

Senior Notes Due 2017 [Member]

Senior Notes Due 2017 [Member]

Senior Notes Due 2017 [Member]

Senior Notes Due 2017 [Member]

Senior Notes Due 2017 [Member]

Senior Notes Due 2017 [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Eastern Airways

Eastern Airways

Eastern Airways

Eastern Airways

Other Debt [Member]

Other Debt [Member]

Three Hundred Sixty Four Day Term Loan And Credit Facility [Member]

Three Hundred Sixty Four Day Term Loan And Credit Facility [Member]

First Amendment [Member]

Third Amendment [Member]

First Amendment [Member]

First Amendment [Member]

Second Amendment [Member]

Third Amendment [Member]

First Amendment [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Debt Portion With Premium [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total debt

'

$841,302,000

$787,269,000

'

'

'

'

'

'

'

'

'

'

'

'

'

$450,000,000

$450,000,000

'

'

$226,604,000

$230,625,000

$109,904,000

$106,196,000

'

'

'

'

'

'

'

$24,000,000

$0

'

'

$29,911,000

$0

'

'

$883,000

$448,000

'

'

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

'

-14,207,000

-22,323,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total long-term debt

'

827,095,000

764,946,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.25%

6.25%

'

'

'

'

3.00%

'

'

'

7.50%

7.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Convertible, Conversion Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$74.05

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior Notes Due 2022 [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument Issuance Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Jun-08

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1-Oct-12

'

Debt instrument, priority

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'The 6 B

FAIR_VALUE_DISCLOSURES_Details

FAIR VALUE DISCLOSURES (Details)

12 Months Ended

12 Months Ended

12 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

USD ($)

USD ($)

USD ($)

Cougar [Member]

Cougar [Member]

Eastern Airways International Limited

Eastern Airways International Limited

Fair Value Measurements Nonrecurring [Member]

Fair Value Measurements Nonrecurring [Member]

Assets Held For Sale [Member]

Assets Held For Sale [Member]

Assets Held For Sale [Member]

Medium Aircraft [Member]

AS332L Aircraft [Member]

AS332L Aircraft [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Term Loan [Member]

Term Loan [Member]

Convertible Notes Payable [Member]

Convertible Notes Payable [Member]

Senior Notes Due 2017 [Member]

Senior Notes Due 2017 [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Eastern Airways International Limited

Eastern Airways International Limited

Other Debt [Member]

Other Debt [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [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 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [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]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Estimate Of Fair Value, Fair Value Disclosure [Member]

Estimate Of Fair Value, Fair Value Disclosure [Member]

Estimate Of Fair Value, Fair Value Disclosure [Member]

Estimate Of Fair Value, Fair Value Disclosure [Member]

Estimate Of Fair Value, Fair Value Disclosure [Member]

Estimate Of Fair Value, Fair Value Disclosure [Member]

Estimate Of Fair Value, Fair Value Disclosure [Member]

Estimate Of Fair Value, Fair Value Disclosure [Member]

USD ($)

GBP (£)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Assets Held For Sale [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Fair Value Measurements Nonrecurring [Member]

Fair Value Measurements Nonrecurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

FV Other Assets [Member]

FV Other Liabilities And Deferred Credits [Member]

FV Other Liabilities And Deferred Credits [Member]

Fair Value Measurements Nonrecurring [Member]

Fair Value Measurements Nonrecurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

FV Other Assets [Member]

FV Other Assets [Member]

FV Other Liabilities And Deferred Credits [Member]

FV Other Liabilities And Deferred Credits [Member]

Fair Value Measurements Nonrecurring [Member]

Fair Value Measurements Nonrecurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

FV Other Assets [Member]

FV Other Assets [Member]

FV Other Liabilities And Deferred Credits [Member]

FV Other Liabilities And Deferred Credits [Member]

Fair Value Measurements Nonrecurring [Member]

Fair Value Measurements Nonrecurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

FV Other Assets [Member]

FV Other Assets [Member]

FV Other Liabilities And Deferred Credits [Member]

FV Other Liabilities And Deferred Credits [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Fair Value [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventories

$137,463,000

$153,969,000

'

'

'

'

'

($12,669,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0

'

'

'

'

'

'

$50,505,000

'

'

'

'

'

'

'

$0

'

'

'

'

'

'

'

$50,505,000

'

'

'

'

'

'

'

Aircraft and equipment

'

'

'

'

'

'

'

'

8,722,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

14,385,000

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

14,385,000

'

'

'

'

'

'

Assets held for sale

29,276,000

8,290,000

'

'

'

'

'

'

-4,362,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

16,050,000

1,600,000

'

'

'

'

'

'

0

0

'

'

'

'

'

'

16,050,000

1,600,000

'

'

'

'

'

'

Total assets

'

'

'

'

'

'

'

'

4,360,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

66,555,000

15,985,000

'

'

'

'

'

'

0

0

'

'

'

'

'

'

66,555,000

15,985,000

'

'

'

'

'

'

Rabbi Trust investments

6,599,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,837,000

'

'

'

'

'

'

0

0

'

'

'

'

'

'

0

0

'

'

'

'

'

'

0

4,837,000

'

'

Total assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,599,000

4,837,000

'

'

'

'

'

0

0

'

'

'

'

'

'

0

0

'

'

'

'

'

'

0

4,837,000

'

'

'

'

Contingent consideration

31,322,000

35,625,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

0

0

'

'

'

'

'

'

31,322,000

35,625,000

'

'

'

'

'

'

31,322,000

35,625,000

Total liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

0

0

'

'

'

'

'

'

31,322,000

35,625,000

'

'

'

'

'

'

31,322,000

35,625,000

'

'

'

'

Impairment of Long-Lived Assets to be Disposed of

6,800,000

4,400,000

26,300,000

'

'

'

'

-6,814,000

'

6,814,000

4,362,000

26,278,000

2,700,000

'

23,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of impairment of long lived assets to be disposed of

11

10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft reclassed held for sale to property and eqiupment

'

'

'

'

'

'

'

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain from aircraft reclassed from held for sale to property and eqiupment

'

'

'

'

'

'

'

'

'

'

'

'

'

8,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

FV Gain (Loss) Total

'

'

'

'

'

'

'

-19,483,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.25%

6.25%

'

'

3.00%

'

7.50%

7.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value starting balance

35,625,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

0

0

'

'

'

'

'

'

31,322,000

35,625,000

'

'

'

'

'

'

31,322,000

35,625,000

Contingent liability for investment in unconsolidated affiliate

0

34,245,000

0

'

'

10,000,000

6,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in fair value of contingent consideration

1,697,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Earn out payment

-6,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value ending balance

31,322,000

35,625,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

0

0

'

'

'

'

'

'

31,322,000

35,625,000

'

'

'

'

'

'

31,322,000

35,625,000

Carrying value of total debt

841,302,000

787,269,000

'

'

'

'

'

'

'

'

'

'

'

'

'

450,000,000

450,000,000

226,604,000

230,625,000

109,904,000

106,196,000

'

'

24,000,000

0

29,911,000

0

883,000

448,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of total debt

$900,780,000

$847,767,000

'

'

'

'

'

'

'

'

'

'

'

'

'

$477,000,000

$484,875,000

$226,604,000

$230,625,000

$142,382,000

$131,819,000

'

'

$24,000,000

$0

$29,911,000

$0

$883,000

$448,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value Inputs, Discount Rate

'

'

'

4.00%

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

DERIVATIVE_FINANCIAL_INSTRUMEN3

DERIVATIVE FINANCIAL INSTRUMENTS (Details)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2012	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2013	Jun. 30, 2011	Mar. 31, 2011	Mar. 31, 2011	Mar. 31, 2011
	USD ($)	USD ($)	USD ($)	Other Income[Member]	Foreign Exchange Forward [Member]	Foreign Exchange Forward [Member]	Foreign Exchange Forward [Member]	Foreign Exchange Forward [Member]	Foreign Exchange Forward [Member]	Foreign Exchange Forward [Member]	Foreign Exchange Forward [Member]
				USD ($)	USD ($)	USD ($)		EUR (€)	EUR (€)	Maximum [Member]	Minimum [Member]
										EUR (€)	EUR (€)
Derivative [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Number of Open Forward Contracts	0	0	'	'	'	'	0	'	6	'	'
Derivative Foreign Currency Option Strike Price	'	'	'	'	'	'	'	1.418	'	1.3267	1.3153
Underlying nominal value of open forward contracts	'	'	'	'	'	'	'	'	'	€ 7,000,000	€ 5,000,000
Notional value of open forward contracts	'	'	'	'	'	'	'	13,826,241	34,300,871	'	'
Unrecognized gain/loss in other comprehensive income	'	'	'	'	'	2,200,000	'	'	'	'	'
Realized gain/loss on forward contracts	0	0	0	'	'	'	'	'	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Amount of Gain/Loss in OCI	'	'	-2,150,000	'	-2,150,000	'	'	'	'	'	'
Amount of Gain/Loss Reclassified from OCI	'	'	0	0	'	'	'	'	'	'	'
Amount of Gain/Loss Recognized in Income	'	'	$0	$0	'	'	'	'	'	'	'

COMMITMENTS_AND_CONTINGENCIES_1

COMMITMENTS AND CONTINGENCIES (Details) (USD $)

3 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Jun. 30, 2014

Mar. 31, 2014

Mar. 31, 2014

Jun. 30, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Damage from Fire, Explosion or Other Hazard [Member]

Aircraft Operating Lease [Member]

Aircraft Operating Lease [Member]

Aircraft Operating Lease [Member]

Other Operating Lease [Member]

Fiscal Year 2015 To Fiscal Year 2016 [Member]

Fiscal Year 2017 To Fiscal Year 2019 [Member]

Fiscal Year 2020 To Fiscal Year 2024 [Member]

Medium Aircraft [Member]

Large Aircraft [Member]

U.K. SAR [Member]

Medium And Large [Member]

Other Purchase Commitments [Member]

EC225 Affected Aircraft [Member]

EC225 Affected Aircraft [Member]

U.K.

U.K.

U.K.

NORWAY

AUSTRALIA

AUSTRALIA

Alaska [Member]

Southern North Sea [Member]

Southern North Sea [Member]

Commitments [Member]

Commitments [Member]

Commitments [Member]

Options [Member]

Options [Member]

Options [Member]

Year One [Member]

Year One [Member]

Year One [Member]

Year One [Member]

Year One [Member]

Year Two [Member]

Year Two [Member]

Year Two [Member]

Year Two [Member]

Year Two [Member]

Year Three [Member]

Year Three [Member]

Year Three [Member]

Year Three [Member]

Year Three [Member]

Year Four and Thereafter [Member]

Year Four and Thereafter [Member]

Year Four and Thereafter [Member]

Year Four and Thereafter [Member]

Year Four and Thereafter [Member]

EC225 Affected Aircraft [Member]

EC225 Affected Aircraft [Member]

EC225 Affected Aircraft [Member]

EC225 Affected Aircraft [Member]

EC225 Affected Aircraft [Member]

EC225 Affected Aircraft [Member]

Medium Aircraft [Member]

Large Aircraft [Member]

U.K. SAR [Member]

Medium And Large [Member]

Medium Aircraft [Member]

Large Aircraft [Member]

U.K. SAR [Member]

Medium And Large [Member]

Medium Aircraft [Member]

Large Aircraft [Member]

U.K. SAR [Member]

Medium And Large [Member]

Medium Aircraft [Member]

Large Aircraft [Member]

U.K. SAR [Member]

Medium And Large [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Aircraft Purchase Contracts [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase Commitments - Total

$707,477,000

'

'

'

'

'

'

'

$707,477,000

'

'

'

'

'

'

'

'

'

'

'

'

$206,394,000

$501,083,000

$55,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$480,459,000

'

'

$106,704,000

$373,755,000

$189,431,000

'

'

$99,690,000

$89,741,000

$37,587,000

'

'

$0

$37,587,000

$0

'

'

$0

$0

Purchase Options - Total

1,124,119,000

'

'

'

'

'

'

'

1,124,119,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

88,831,000

'

'

'

'

350,145,000

'

'

'

'

422,100,000

'

'

'

'

263,043,000

'

'

'

'

Work force reductions costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,900,000

2,100,000

2,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Analysis Of Aircraft Orders And Options [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning of period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

45

15

6

70

40

31

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aircraft delivered

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-21

-8

-9

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aircraft ordered

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

18

26

13

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

New options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

0

42

31

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercised options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8

12

7

-8

-12

-7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expired options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

-7

0

-15

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Orders transferred

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-7

0

-2

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

End of period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

43

45

15

55

70

40

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Aircraft Purchase Commitments

43

'

'

'

'

'

'

'

43

'

'

'

'

'

'

'

'

'

'

10

22

11

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

28

10

13

5

'

12

0

6

6

'

3

0

3

0

'

0

0

0

0

'

Number Of Aircraft Options

55

'

'

'

'

'

'

'

55

'

'

'

'

'

'

'

'

'

'

21

34

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

'

'

15

7

8

'

'

21

7

14

'

'

19

7

12

'

'

Number of signed client contracts

19

'

'

'

'

'

'

'

19

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Aircraft Orders Subject To Successful Development

5

'

'

'

'

'

'

'

5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Aircraft Under Option Subject To Successful Development

7

'

'

'

'

'

'

'

7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft suspend operations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

16

'

11

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft owned

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Leased Aircraft

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft returned to service

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9

'

'

3

5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft expected to return to service

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale Leaseback Transaction [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating leases rental expense

'

'

'

'

'

'

'

'

105,800,000

67,400,000

46,000,000

'

83,500,000

46,800,000

27,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating Leases, Future Minimum Payments Due, Current

104,278,000

'

'

'

'

'

'

'

104,278,000

'

'

'

94,796,000

'

'

9,482,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating Leases, Future Minimum Payments, Due in Two Years

95,648,000

'

'

'

'

'

'

'

95,648,000

'

'

'

87,937,000

'

'

7,711,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating Leases, Future Minimum Payments, Due in Three Years

90,047,000

'

'

'

'

'

'

'

90,047,000

'

'

'

83,372,000

'

'

6,675,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating Leases, Future Minimum Payments, Due in Four Years

71,667,000

'

'

'

'

'

'

'

71,667,000

'

'

'

66,071,000

'

'

5,596,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating Leases, Future Minimum Payments, Due in Five Years

49,492,000

'

'

'

'

'

'

'

49,492,000

'

'

'

44,149,000

'

'

5,343,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating Leases, Future Minimum Payments, Due Thereafter

84,275,000

'

'

'

'

'

'

'

84,275,000

'

'

'

44,376,000

'

'

39,899,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operating Leases, Future Minimum Payments Due

495,407,000

'

'

'

'

'

'

'

495,407,000

'

'

'

420,701,000

'

'

74,706,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of aircraft sale leaseback

'

'

'

'

'

'

'

'

14

11

9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from assignment of aircraft purchase agreements

'

'

'

'

'

'

'

'

106,113,000

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Aircraft Assigned Future Payments

'

'

'

'

'

'

'

'

7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale price of the aircraft leaseback

'

'

'

'

'

'

'

'

246,400,000

255,800,000

171,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale Leaseback Progress Payments

'

'

'

'

'

'

'

'

'

'

23,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale Leaseback Progress Payments Number Of Aircraft

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of operating lease

'

'

'

'

'

'

'

'

61

'

'

'

'

'

'

'

9

26

26

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Monthly Rent payment

'

'

'

'

'

'

'

'

8,038,000

'

'

'

'

'

'

'

1,023,000

4,264,000

2,751,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Lease term of the aircraft

'

'

'

'

'

'

'

'

'The aircraft leases range from base terms of five to 84 months with renewal options of up to 108 months in some cases, include purchase options upon expiration and some include early purchase options.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Insurance Recoveries

'

'

'

'

'

'

'

'

'

4,700,000

'

11,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collective Bargaining Agreements and/or Unions

52.00%

'

'

'

'

'

'

'

52.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employee Agreement Escalation Rate

'

'

'

'

'

'

'

'

'up to 12%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Officer Compensation Expense

'

'

'

'

'

'

'

'

2,900,000

2,000,000

2,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Possible litigation damages from early termination of agreement

'

'

'

'

'

'

'

'

'The claimants allege that an agreement between the parties was terminated without justification and seek damages of $16.3 million. We responded to this claim in early 2006. There has been minimal activity on this claim since then.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment of inventories

'

'

'

'

'

'

'

'

12,669,000

0

25,919,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (loss) on disposal of assets

$100,000

$4,000,000

($3,100,000)

($1,700,000)

$7,200,000

$7,400,000

($1,300,000)

($5,300,000)

($722,000)

$8,068,000

($31,670,000)

($11,100,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

TAXES_Details

TAXES (Details) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]	'	'	'
Domestic	($14,357,000)	$2,472,000	($1,100,000)
Foreign	259,348,000	164,205,000	80,542,000
Income before provision for income taxes	244,991,000	166,677,000	79,442,000
Effective Income Tax Rate Reconciliation, Amount [Abstract]	'	'	'
Current domestic provision for income taxes	36,872,000	1,638,000	27,000
Current foreign provision for income taxes	33,939,000	26,275,000	23,059,000
Current provision for income taxes total	70,811,000	27,913,000	23,086,000
Deferred domestic provision for income taxes	-6,646,000	1,619,000	1,658,000
Deferred foreign provision for income taxes	-6,953,000	5,470,000	-10,543,000
Deferred Income Tax Expense (Benefit), Total	-13,599,000	7,089,000	-8,885,000
Income Tax Expense (Benefit)	57,212,000	35,002,000	14,201,000
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent [Abstract]	'	'	'
Statutory rate	35.00%	35.00%	35.00%
Net foreign taxes on non-U.S. earnings	11.80%	14.40%	20.40%
Change in Valuation Allowance	1.80%	0.00%	0.00%
Foreign earnings indefinitely reinvested abroad	-18.90%	-28.40%	-26.30%
Foreign earnings that are currently taxed in the U.S.	4.10%	4.60%	5.90%
Effect of reduction in U.K. corporate income tax rate	-1.20%	-1.70%	-2.30%
Dividend inclusion	1.10%	0.00%	16.60%
Benefit of prior year foreign tax credits	0.00%	0.00%	-5.30%
Benefit of current year foreign tax credits	-5.20%	-5.50%	-9.80%
Tax reserve release	-0.70%	0.00%	-7.70%
Other, net	-4.40%	2.60%	-8.60%
Effective Tax Rate Total	23.40%	21.00%	17.90%
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Deferred tax assets - foreign tax credits	17,628,000	10,483,000	'
Deferred Tax Assets, Net operating loss	15,627,000	0	'
Deferred tax assets - accrued pension liability	18,531,000	29,951,000	'
Deferred tax assets - maintenance and repair	12,674,000	10,291,000	'
Deferred tax assets - equity compensation	11,627,000	11,607,000	'
Deferred tax assets - deferred revenues	2,124,000	2,212,000	'
Deferred tax assets - employee award programs	6,289,000	4,237,000	'
Deferred tax assets - employee payroll accruals	4,845,000	4,494,000	'
Deferred tax assets - other	3,188,000	6,348,000	'
Deferred Tax Assets, Valuation Allowance	-6,896,000	0	'
Total deferred tax assets	85,637,000	79,623,000	'
Deferred Tax Liabilities- property and equipment	-205,104,000	-189,482,000	'
Deferred Tax Liabilities- inventories	-6,956,000	-11,068,000	'
Deferred Tax Liabilities- investments in unconsolidated affiliates	-8,985,000	-11,681,000	'
Deferred tax liabilities - employee programs	-1,895,000	0	'
Deferred Tax Liabilities- other	-9,195,000	-6,912,000	'
Total deferred tax liabilities	-232,135,000	-219,143,000	'
Net deferred tax liabilities	-146,498,000	-139,520,000	'
Dividend inclusion as a result of internal realignment	'	'	13,200,000
Foreign Tax Credits	'	'	11,500,000
Decrease in Tax Reserve Foreign Ruling	'	'	12,600,000
UK Corporate Tax Rate Benefit	2,900,000	2,900,000	1,800,000
Number of aircraft involved in intercompany leasing transaction	11	'	'
Remaining Useful Life of an intercompany leasing transaction	'13 years	'	'
Tax Benefit from intercompany leasing transaction	2,900,000	2,900,000	2,900,000
Unrecognized Tax Benefits Period Increase Decrease	-1,500,000	100,000	-10,400,000
Interest and Penalties	100,000	100,000	200,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	'	'	'
Unrecognized Tax Benefits- beginning balance	1,710,000	1,523,000	'
Increase in Tax Reserve	129,000	348,000	'
Decrease in Tax Reserve	-1,434,000	-161,000	'
Decrease Resulting from Settlements with Taxing Authorities	-218,000	0	'
Unrecognized Tax Benefits- ending balance	187,000	1,710,000	1,523,000
Unremitted foreign earnings reinvested abroad	679,300,000	553,800,000	'
Tax benefit attributable to options exercised	5,700,000	500,000	400,000
Income Taxes Paid	59,100,000	24,100,000	19,000,000
UNITED STATES	'	'	'
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Open tax years by jurisdiction	'2012	'	'
U.K.	'	'	'
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Open tax years by jurisdiction	'2012	'	'
NIGERIA	'	'	'
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Open tax years by jurisdiction	'2005	'	'
TRINIDAD	'	'	'
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Open tax years by jurisdiction	'2005	'	'
Year 2021 [Member]	'	'	'
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Deferred tax assets - foreign tax credits	6,600,000	'	'
Year 2022 [Member]	'	'	'
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Deferred tax assets - foreign tax credits	3,900,000	'	'
Year 2023 [Member]	'	'	'
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Deferred tax assets - foreign tax credits	200,000	'	'
Year 2024 [Member]	'	'	'
Components of Deferred Tax Assets and Liabilities [Line Items]	'	'	'
Deferred tax assets - foreign tax credits	$6,900,000	'	'

EMPLOYEE_BENEFIT_PLANS_Details

EMPLOYEE BENEFIT PLANS (Details)

0 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

Feb. 03, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2011

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Feb. 03, 2014

Feb. 03, 2014

Feb. 03, 2014

Feb. 03, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

USD ($)

USD ($)

USD ($)

USD ($)

Restricted Stock And Restricted Stock Units [Member]

Restricted Stock And Restricted Stock Units [Member]

Restricted Stock And Restricted Stock Units [Member]

Restricted Stock And Restricted Stock Units [Member]

Non Employee Grants [Member]

Non Employee Grants [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Plan 2007 [Member]

Plan 2007 [Member]

Plan 2007 [Member]

Plan 2007 [Member]

Plan 2007 [Member]

Plan 2003 [Member]

Chief Executive Officer [Member]

Senior Vice President, Operations [Member]

Senior Vice President, Commercial [Member]

Senior Vice President, Administration [Member]

Senior Vice President, General Counsel [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]

Equity Securities [Member]

Equity Securities [Member]

Debt Securities [Member]

Debt Securities [Member]

Real Estate [Member]

Real Estate [Member]

Other Plan Assets [Member]

Other Plan Assets [Member]

Cash and cash equivalents [Member]

Cash and cash equivalents [Member]

Cash and cash equivalents [Member]

Cash and cash equivalents [Member]

Cash and cash equivalents [Member]

Cash and cash equivalents [Member]

Cash and cash equivalents [Member]

Cash and cash equivalents [Member]

Equity Investments UK [Member]

Equity Investments UK [Member]

Equity Investments UK [Member]

Equity Investments UK [Member]

Equity Investments UK [Member]

Equity Investments UK [Member]

Equity Investments UK [Member]

Equity Investments UK [Member]

Equity Investments Non UK [Member]

Equity Investments Non UK [Member]

Equity Investments Non UK [Member]

Equity Investments Non UK [Member]

Equity Investments Non UK [Member]

Equity Investments Non UK [Member]

Equity Investments Non UK [Member]

Equity Investments Non UK [Member]

Diviersified Growth Funds [Member]

Diviersified Growth Funds [Member]

Diviersified Growth Funds [Member]

Diviersified Growth Funds [Member]

Diviersified Growth Funds [Member]

Diviersified Growth Funds [Member]

Diviersified Growth Funds [Member]

Diviersified Growth Funds [Member]

Government debt securities [Member]

Government debt securities [Member]

Government debt securities [Member]

Government debt securities [Member]

Government debt securities [Member]

Government debt securities [Member]

Government debt securities [Member]

Government debt securities [Member]

Corporate Debt Securities [Member]

Corporate Debt Securities [Member]

Corporate Debt Securities [Member]

Corporate Debt Securities [Member]

Corporate Debt Securities [Member]

Corporate Debt Securities [Member]

Corporate Debt Securities [Member]

Corporate Debt Securities [Member]

Group Insurance Policies [Member]

Group Insurance Policies [Member]

Group Insurance Policies [Member]

Group Insurance Policies [Member]

Group Insurance Policies [Member]

Group Insurance Policies [Member]

Group Insurance Policies [Member]

Group Insurance Policies [Member]

UK Pension Plan [Member]

UK Pension Plan [Member]

UK Pension Plan [Member]

UK Pension Plan [Member]

UK Pension Plan [Member]

UK Pension Plan [Member]

Norway pension plan [Member]

Norway pension plan [Member]

Norway pension plan [Member]

Norway pension plan [Member]

Norway pension plan [Member]

Norway pension plan [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Employee Stock Option [Member]

Employee Stock Option [Member]

Employee Stock Option [Member]

Retirement Agreement [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

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]

USD ($)

USD ($)

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]

USD ($)

USD ($)

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]

USD ($)

USD ($)

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]

USD ($)

USD ($)

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]

USD ($)

USD ($)

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]

USD ($)

USD ($)

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]

USD ($)

GBP (£)

Pilot [Member]

Other Employee [Member]

USD ($)

Pilot [Member]

Other Employee [Member]

Minimum [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Compensation Related Costs [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Contribution Pension Match

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Contribution Pension

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Contribution Amount

'

$12,700,000

$10,900,000

$10,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual Rate Increase Limit

'

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

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'

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'

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Closed Plan Maximum Contribution

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

'

'

7.35%

7.00%

'

'

'

'

'

'

Minimum Contribution Match

'

'

'

'

'

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'

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'

'

'

'

'

'

5.00%

5.00%

'

'

'

'

'

'

'

'

'

'

Retirement Age

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

58

62

'

Years of Service For Maximum Pension

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30

Change in Benefit Obligation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Projected benefit obligation (PBO)- beginning balance

'

606,313,000

561,633,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

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'

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'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service cost

'

7,886,000

8,209,000

6,332,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest cost

'

26,861,000

25,683,000

28,208,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Actuarial loss

'

-29,313,000

63,393,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Benefit payments and expenses

'

-23,234,000

-23,652,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Effect of exchange rate changes

'

-49,128,000

28,953,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Projected benefit obligation (PBO)- ending balance

'

637,641,000

606,313,000

561,633,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in Plan Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Market value of assets - beginning balance

'

479,666,000

449,891,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

48,685,000

1,973,000

440,835,000

428,104,000

49,589,000

'

'

'

'

'

'

'

'

48,685,000

1,973,000

48,685,000

1,973,000

0

0

0

0

118,712,000

119,626,000

0

0

118,712,000

119,626,000

0

0

96,537,000

89,720,000

0

0

96,537,000

89,720,000

0

0

105,207,000

94,426,000

0

0

105,207,000

94,426,000

0

0

51,853,000

61,028,000

0

0

51,853,000

61,028,000

0

0

68,526,000

63,304,000

0

0

68,526,000

63,304,000

0

0

61,298,000

49,589,000

0

0

0

0

61,298,000

49,589,000

'

'

'

'

'

'

'

'

'

'

'

'

Actual return on assets

'

23,630,000

47,974,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,514,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employer Contributions

'

28,974,000

28,607,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,800,000

12,500,000

'

'

'

'

'

'

'

'

'

'

Effect of exchange rate changes on plan assets

'

-41,782,000

23,154,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-1,284,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued pension liabilities

'

86,823,000

126,647,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated benefit obligation (ABO)

'

611,782,000

582,047,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amounts recognized in accumulated other comprehensive loss

'

232,848,000

244,322,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Market value of assets - ending balance

'

550,818,000

479,666,000

449,891,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

48,685,000

1,973,000

440,835,000

428,104,000

61,298,000

'

'

'

'

'

'

'

'

48,685,000

1,973,000

48,685,000

1,973,000

0

0

0

0

118,712,000

119,626,000

0

0

118,712,000

119,626,000

0

0

96,537,000

89,720,000

0

0

96,537,000

89,720,000

0

0

105,207,000

94,426,000

0

0

105,207,000

94,426,000

0

0

51,853,000

61,028,000

0

0

51,853,000

61,028,000

0

0

68,526,000

63,304,000

0

0

68,526,000

63,304,000

0

0

61,298,000

49,589,000

0

0

0

0

61,298,000

49,589,000

'

'

'

'

'

'

'

'

'

'

'

'

Components of net periodic pension cost

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected return on assets

'

-29,282,000

-29,068,000

-29,639,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of unrecognized losses

'

7,705,000

6,612,000

5,386,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net periodic pension cost

'

13,170,000

11,436,000

10,287,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount in Accumulated OCI expected to be recognized in following fiscal year

'

4,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Assumptions Used [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.40%

4.40%

4.90%

5.60%

'

'

4.00%

3.50%

4.75%

'

'

'

Expected long-term rate of return on assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.29%

6.29%

6.90%

7.20%

'

'

3.25%

4.50%

4.75%

'

'

'

Rate of compensation increase

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.30%

3.30%

3.00%

3.50%

'

'

1.25%

0.75%

1.75%

'

'

'

Salary escalation rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.25%

4.25%

4.50%

'

'

'

Social Security base rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.00%

4.00%

4.25%

'

'

'

Defined Benefit Plan, Assets, Target Allocations [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Actual allocation of plan assets

'

100.00%

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

59.10%

64.60%

27.60%

31.00%

1.50%

1.80%

11.80%

2.60%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Target allocation of plan assets

'

100.00%

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

57.80%

58.30%

30.80%

31.10%

0.00%

0.00%

11.40%

10.60%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated cash contributions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,200,000

'

'

'

'

'

7,900,000

'

'

'

'

'

Net purchases, sales and settlements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,479,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Projected benefit payments by year [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2015

'

27,229,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2016

'

28,464,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2017

'

29,381,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2018

'

30,305,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2019

'

31,230,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate 2020 - 2024

'

167,674,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rabbi Trust investments

'

6,599,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Incentive Compensation [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock Shares reserved

'

4,454,714

'

'

'

'

'

'

'

'

'

'

'

5,400,000

2,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares available for grant

'

2,992,841

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

250,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Performance Cash Maximum Potential Payout

'

14,000,000

9,300,000

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Performance Cash Compensation Expense

'

8,700,000

10,200,000

4,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional compensation expense

'

'

'

'

'

'

'

'

'

100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock based compensation expense

'

15,433,000

11,869,000

11,510,000

'

9,400,000

7,400,000

7,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares Outstanding

'

1,002,156

1,150,519

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock option grants- shares

'

302,678

'

'

'

'

'

'

5,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise of stock options

'

-433,608

-416,936

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options expired or forfeited- shares

'

-17,433

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options exercisable- shares

'

471,431

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price of options oustanding

'

$48.62

$40.03

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price of options granted

'

$62.66

'

'

'

'

'

'

'

'

'

'

'

'

'

$62.66

$43.38

$43.79

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price of options exercised

'

$35.51

$36.67

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price of options expired or forfeited

'

$51.49

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price of options exercisable

'

$43.22

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average remaining contractual life of options outstanding

'

'6 years 11 months 13 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average remaining contractual life of options exercisable

'

'5 years 1 month 17 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate intrinsic value options outstanding

'

15,228,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate intrinsic value options exercisable

'

26,956,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Risk free interest rate

'

'

'

'

'

'

'

'

'

'

1.01%

0.75%

1.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected life (years)

'

'

'

'

'

'

'

'

'

'

'5 years

'5 years

'6 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Volatility

'

'

'

'

'

'

'

'

'

'

48.70%

50.20%

47.10%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividend yield

'

'

'

'

'

'

'

'

'

'

1.60%

1.83%

1.37%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average grant-date fair value of options granted

'

'

'

'

'

'

'

'

'

'

$23.77

$16.73

$17.32

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrecognized stock-based compensation expense

'

'

'

'

10,000,000

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average period to recognize unrecognized stock-based compensation expense

'

'

'

'

'2 years

'

'

'

'

'

'1 year 8 months 13 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unvested stock options - shares

'

'

'

'

459,717

'

'

'

'

'

530,725

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value option vested

'

'

'

'

'

'

'

'

'

'

5,100,000

3,900,000

3,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intrinsic value options exercised

'

'

'

'

'

'

'

'

'

'

15,500,000

6,300,000

2,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash received from options exercised

'

'

'

'

'

'

'

'

'

'

15,400,000

15,300,000

5,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tax benefit attributable to options exercised

'

5,700,000

500,000

400,000

'

'

'

'

'

'

5,400,000

1,900,000

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tax benefit related to stock-based compensation

'

5,723,000

500,000

354,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock and restricted stock units [rollforward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested restricted stock and restricted stock units

'

459,717

500,029

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock grants- shares

'

232,364

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,784

14,330

13,206

12,223

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock forfeited- shares

'

-34,554

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock vested- shares

'

-238,122

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested weighted average grant date fair value per unit

'

$52.13

$38.63

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock grants- fair value

$71.18

$64.99

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock forfeited- fair value

'

$57.30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted stock vested- fair value

'

$35.59

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Bonus

'

17,200,000

12,200,000

9,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

One Time Bonus

'

'

3,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contributions to deferred compensation plan

'

900,000

700,000

600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Lump Sum Cash Payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compensation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Officer Compensation Expense

'

$2,900,000

$2,000,000

$2,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

STOCKHOLDERS_INVESTMENT_EARNIN2

STOCKHOLDERS' INVESTMENT, EARNINGS PER SHARE AND ACCUMULATED COMPREHENSIVE INCOME (Details) (USD $)

2 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

1 Months Ended

12 Months Ended

Mar. 31, 2014

Jan. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2011

Sep. 30, 2011

Jun. 30, 2011

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Jun. 30, 2014

16-May-14

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

Currency translation adjustment [Member]

Currency translation adjustment [Member]

Currency translation adjustment [Member]

Pension liability adjustment [Member]

Pension liability adjustment [Member]

Pension liability adjustment [Member]

Unrealized loss on cash flow hedges [Member]

Unrealized loss on cash flow hedges [Member]

Unrealized loss on cash flow hedges [Member]

Dividend Declared [Member]

Subsequent Event [Member]

Stock Options [Member]

Stock Options [Member]

Stock Options [Member]

Restricted Stock Units [Member]

Restricted Stock Units [Member]

Restricted Stock Units [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

Restricted Stock Awards [Member]

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock Shares reserved

4,454,714

'

4,454,714

'

'

'

'

'

'

'

'

'

'

'

4,454,714

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares outstanding

35,708,469

'

35,708,469

'

'

'

36,150,639

'

'

'

35,755,317

'

'

'

35,708,469

36,150,639

35,755,317

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise of stock options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

433,608

416,936

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exercise price of options exercised

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$35.51

$36.67

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Issuance of restricted stock and restricted stock units

'

'

'

'

'

'

'

'

'

'

'

'

'

'

167,797

29,667

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average price per share of issued restricted stock and restricted stock units

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$67.27

$51.79

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repurchases of common stock, shares

-598,075

-445,800

'

'

'

'

'

'

'

'

'

'

'

'

-1,043,875

-24,709

-526,895

'

'

'

'

'

'

'

'

'

'

-125,983

'

'

'

'

'

'

'

'

'

Weighted average price per share of treasury stock purchased

$74.40

'

$74.40

'

'

'

$49.30

'

'

'

'

'

'

'

$74.40

$49.30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Issuance of Common Stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300

-26,572

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average price per share of other issuances

$65.09

'

$65.09

'

'

'

$39.63

'

'

'

'

'

'

'

$65.09

$39.63

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of stock owned by U.S. citizens requirement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

75.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of stock owned by other than U.S. citizens requirement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common shares owned by foreign addresses

2,891,000

'

2,891,000

'

'

'

'

'

'

'

'

'

'

'

2,891,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of total outstanding common shares owned by foreign addresses

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash dividends declared per common share

'

'

$0.25

$0.25

$0.25

$0.25

$0.20

$0.20

$0.20

$0.20

$0.15

$0.15

$0.15

$0.15

$1

$0.80

$0.60

'

'

'

'

'

'

'

'

'

$0.32

'

'

'

'

'

'

'

'

'

'

Dividends paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$36,320,000

$28,734,000

$21,616,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock repurchase authorized amount

'

'

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

100,000,000

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repurchase of common stock

-44,200,000

-33,500,000

'

'

'

'

'

'

'

'

'

'

'

'

-77,661,000

-1,219,000

-25,085,000

'

'

'

'

'

'

'

'

'

'

-9,400,000

'

'

'

'

'

'

'

'

'

Stock Repurchase Program, Remaining Authorized Repurchase Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

46,500,000

'

'

'

'

'

'

'

'

'

Outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

297,595

469,289

267,669

0

0

80,978

7,416

171

0

Weighted average exercise price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$43.59

$43.88

$30.16

$0

$0

$46.82

$70.90

$48.14

$0

Income available to common stockholders - basic

'

'

'

'

'

'

'

'

'

'

'

'

'

'

186,737,000

130,102,000

63,530,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income available to common stockholders - diluted

'

'

'

'

'

'

'

'

'

'

'

'

'

'

186,737,000

130,102,000

63,530,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average number of common shares outstanding - basic

'

'

'

'

'

'

'

'

'

'

'

'

'

'

36,283,853

36,010,191

36,068,884

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

412,911

479,821

698,537

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average number of common shares outstanding - diluted

'

'

'

'

'

'

'

'

'

'

'

'

'

'

36,696,764

36,490,012

36,767,421

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Earnings Per Share, Basic

'

'

$0.84

$0.52

$3.04

$0.74

$1.12

$1.01

$0.83

$0.66

'

'

'

'

$5.15

$3.61

$1.76

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Diluted earnings per share

'

'

$0.83

$0.51

$3.01

$0.74

$1.11

$1

$0.82

$0.65

'

'

'

'

$5.09

$3.57

$1.73

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument Convertible Terms Of Conversion Feature

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'As of MarchB 31, 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 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.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Net of Tax Beginning Balance

'

'

'

'

'

-199,683,000

'

'

'

-159,239,000

'

'

'

-130,117,000

-199,683,000

-159,239,000

-130,117,000

14,689,000

30,350,000

35,543,000

-214,372,000

-189,589,000

-167,810,000

0

0

2,150,000

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

36,873,000

-45,400,000

-33,344,000

19,810,000

-11,982,000

905,000

17,063,000

-33,418,000

-32,099,000

0

0

-2,150,000

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,304,000

4,956,000

4,222,000

0

0

0

6,304,000

4,956,000

4,222,000

0

0

0

'

'

'

'

'

'

'

'

'

'

'

Other comprehensive income

'

'

'

'

'

'

'

'

'

'

'

'

'

'

43,177,000

-40,444,000

-29,122,000

19,810,000

-11,982,000

905,000

23,367,000

-28,462,000

-27,877,000

0

0

-2,150,000

'

'

'

'

'

'

'

'

'

'

'

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

0

'

0

'

'

'

0

'

'

'

0

'

'

'

0

0

0

23,313,000

-3,679,000

-6,098,000

-23,313,000

3,679,000

6,098,000

0

0

0

'

'

'

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Net of Tax Ending Balance

($156,506,000)

'

($156,506,000)

'

'

'

($199,683,000)

'

'

'

($159,239,000)

'

'

'

($156,506,000)

($199,683,000)

($159,239,000)

$57,812,000

$14,689,000

$30,350,000

($214,318,000)

($214,372,000)

($189,589,000)

$0

$0

$0

'

'

'

'

'

'

'

'

'

'

'

SEGMENT_INFORMATION_Details

SEGMENT INFORMATION (Details) (USD $)	3 Months Ended								12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	$440,925,000	$412,335,000	$417,328,000	$398,994,000	$391,642,000	$388,469,000	$365,754,000	$362,608,000	$1,669,582,000	$1,508,473,000	$1,341,803,000
Income (Loss) from Equity Method Investments	'	'	'	'	'	'	'	'	8,666,000	25,042,000	8,282,000
Operating income	47,421,000	29,502,000	53,935,000	56,119,000	62,703,000	74,120,000	47,328,000	39,993,000	186,977,000	224,144,000	115,766,000
Gain (loss) on disposal of assets	100,000	4,000,000	-3,100,000	-1,700,000	7,200,000	7,400,000	-1,300,000	-5,300,000	-722,000	8,068,000	-31,670,000
Capital expenditures	'	'	'	'	'	'	'	'	628,613,000	571,425,000	326,420,000
Total depreciation and amortization	'	'	'	'	'	'	'	'	95,977,000	96,284,000	96,144,000
Total identifiable assets	3,398,257,000	'	'	'	2,950,692,000	'	'	'	3,398,257,000	2,950,692,000	'
Total investments in unconsolidated affiliates - equity method	256,329,000	'	'	'	265,837,000	'	'	'	256,329,000	265,837,000	'
Long-Lived Assets	2,268,751,000	'	'	'	1,921,072,000	'	'	'	2,268,751,000	1,921,072,000	'
Construction in progress payments not allocated	'	'	'	'	'	'	'	'	494,500,000	140,100,000	111,900,000
Construction in progress within property and equipment	477,900,000	'	'	'	222,800,000	'	'	'	477,900,000	222,800,000	'
Total property and equipment, net	2,268,751,000	'	'	'	1,921,072,000	'	'	'	2,268,751,000	1,921,072,000	'
Countries operated in	'	'	'	'	'	'	'	'	20	'	'
Top ten clients percentage	'	'	'	'	'	'	'	'	61.30%	'	'
One [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Percentage to client over ten percent	'	'	'	'	'	'	'	'	13.00%	13.00%	12.00%
External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	1,669,582,000	1,508,473,000	1,341,803,000
Intersegment Elimination [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	4,455,000	2,337,000	1,740,000
U.K.	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	526,149,000	383,398,000	345,405,000
Long-Lived Assets	544,113,000	'	'	'	394,557,000	'	'	'	544,113,000	394,557,000	'
NIGERIA	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	328,793,000	296,933,000	258,258,000
Long-Lived Assets	256,239,000	'	'	'	242,095,000	'	'	'	256,239,000	242,095,000	'
CANADA	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	32,895,000	16,447,000	0
Long-Lived Assets	199,861,000	'	'	'	211,316,000	'	'	'	199,861,000	211,316,000	'
NORWAY	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	253,651,000	249,023,000	200,926,000
Long-Lived Assets	155,690,000	'	'	'	162,591,000	'	'	'	155,690,000	162,591,000	'
UNITED STATES	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	225,650,000	237,311,000	208,931,000
Long-Lived Assets	128,124,000	'	'	'	183,890,000	'	'	'	128,124,000	183,890,000	'
AUSTRALIA	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	168,424,000	186,752,000	162,727,000
Long-Lived Assets	188,370,000	'	'	'	180,914,000	'	'	'	188,370,000	180,914,000	'
BRAZIL	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Long-Lived Assets	123,439,000	'	'	'	113,562,000	'	'	'	123,439,000	113,562,000	'
MALAYSIA	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	14,316,000	25,284,000	26,416,000
Long-Lived Assets	61,104,000	'	'	'	101,764,000	'	'	'	61,104,000	101,764,000	'
TRINIDAD	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	51,770,000	43,763,000	39,478,000
Long-Lived Assets	64,520,000	'	'	'	51,004,000	'	'	'	64,520,000	51,004,000	'
TANZANIA	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Long-Lived Assets	42,589,000	'	'	'	0	'	'	'	42,589,000	0	'
OTHER COUNTRIES	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	67,934,000	69,562,000	99,662,000
Long-Lived Assets	26,769,000	'	'	'	56,562,000	'	'	'	26,769,000	56,562,000	'
Construction in progress attributable to aircraft [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Long-Lived Assets	477,933,000	'	'	'	222,817,000	'	'	'	477,933,000	222,817,000	'
Europe [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	740,316,000	619,545,000	559,697,000
Income (Loss) from Equity Method Investments	'	'	'	'	'	'	'	'	4,446,000	10,517,000	11,014,000
Operating income	'	'	'	'	'	'	'	'	114,729,000	111,785,000	94,277,000
Capital expenditures	'	'	'	'	'	'	'	'	38,294,000	175,270,000	66,016,000
Total depreciation and amortization	'	'	'	'	'	'	'	'	32,383,000	33,101,000	34,345,000
Total identifiable assets	932,803,000	'	'	'	808,568,000	'	'	'	932,803,000	808,568,000	'
Total investments in unconsolidated affiliates - equity method	1,067,000	'	'	'	8,569,000	'	'	'	1,067,000	8,569,000	'
Europe [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	740,316,000	619,480,000	559,306,000
Europe [Member] | Intersegment Elimination [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	0	65,000	391,000
West Africa [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	328,793,000	296,933,000	258,258,000
Operating income	'	'	'	'	'	'	'	'	80,053,000	70,315,000	63,768,000
Capital expenditures	'	'	'	'	'	'	'	'	24,324,000	11,501,000	13,375,000
Total depreciation and amortization	'	'	'	'	'	'	'	'	13,923,000	13,077,000	12,805,000
Total identifiable assets	454,161,000	'	'	'	390,402,000	'	'	'	454,161,000	390,402,000	'
West Africa [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	328,793,000	296,933,000	258,258,000
North America [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	230,340,000	226,397,000	177,817,000
Income (Loss) from Equity Method Investments	'	'	'	'	'	'	'	'	1,053,000	-736,000	0
Operating income	'	'	'	'	'	'	'	'	32,255,000	27,538,000	8,378,000
Capital expenditures	'	'	'	'	'	'	'	'	24,427,000	201,439,000	53,367,000
Total depreciation and amortization	'	'	'	'	'	'	'	'	23,505,000	20,193,000	16,243,000
Total identifiable assets	487,659,000	'	'	'	527,710,000	'	'	'	487,659,000	527,710,000	'
Total investments in unconsolidated affiliates - equity method	61,570,000	'	'	'	60,517,000	'	'	'	61,570,000	60,517,000	'
North America [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	230,337,000	226,114,000	176,797,000
North America [Member] | Intersegment Elimination [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	3,000	283,000	1,020,000
Other International [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	134,021,000	132,662,000	145,593,000
Income (Loss) from Equity Method Investments	'	'	'	'	'	'	'	'	3,167,000	15,261,000	-2,732,000
Operating income	'	'	'	'	'	'	'	'	33,769,000	45,201,000	36,343,000
Capital expenditures	'	'	'	'	'	'	'	'	28,136,000	33,147,000	48,498,000
Total depreciation and amortization	'	'	'	'	'	'	'	'	15,024,000	17,018,000	16,660,000
Total identifiable assets	579,571,000	'	'	'	589,361,000	'	'	'	579,571,000	589,361,000	'
Total investments in unconsolidated affiliates - equity method	193,692,000	'	'	'	196,751,000	'	'	'	193,692,000	196,751,000	'
Other International [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	134,021,000	132,662,000	145,593,000
Australia [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	168,424,000	186,752,000	163,189,000
Operating income	'	'	'	'	'	'	'	'	5,523,000	25,283,000	19,840,000
Capital expenditures	'	'	'	'	'	'	'	'	7,058,000	3,736,000	2,421,000
Total depreciation and amortization	'	'	'	'	'	'	'	'	8,728,000	9,995,000	11,352,000
Total identifiable assets	260,483,000	'	'	'	245,757,000	'	'	'	260,483,000	245,757,000	'
Australia [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	168,424,000	186,752,000	162,727,000
Australia [Member] | Intersegment Elimination [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	0	0	462,000
Corporate and Other [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	72,143,000	48,521,000	38,989,000
Operating income	'	'	'	'	'	'	'	'	-78,630,000	-64,046,000	-75,170,000
Capital expenditures	'	'	'	'	'	'	'	'	506,374,000	146,332,000	142,743,000
Total depreciation and amortization	'	'	'	'	'	'	'	'	2,414,000	2,900,000	4,739,000
Total identifiable assets	683,580,000	'	'	'	388,894,000	'	'	'	683,580,000	388,894,000	'
Corporate and Other [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	67,691,000	46,532,000	39,122,000
Corporate and Other [Member] | Intersegment Elimination [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	$4,452,000	$1,989,000	($133,000)

QUARTERLY_FINANCIAL_INFORMATIO2

QUARTERLY FINANCIAL INFORMATION (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	$440,925,000	$412,335,000	$417,328,000	$398,994,000	$391,642,000	$388,469,000	$365,754,000	$362,608,000	$1,669,582,000	$1,508,473,000	$1,341,803,000
Operating income	47,421,000	29,502,000	53,935,000	56,119,000	62,703,000	74,120,000	47,328,000	39,993,000	186,977,000	224,144,000	115,766,000
Net income attributable to Bristow Group	30,318,000	18,927,000	110,606,000	26,886,000	40,380,000	36,392,000	29,668,000	23,662,000	186,737,000	130,102,000	63,530,000
Earnings Per Share, Basic	$0.84	$0.52	$3.04	$0.74	$1.12	$1.01	$0.83	$0.66	$5.15	$3.61	$1.76
Diluted earnings per share	$0.83	$0.51	$3.01	$0.74	$1.11	$1	$0.82	$0.65	$5.09	$3.57	$1.73
Extinguishment of debt	'	'	'	'	'	'	'	'	0	-14,932,000	0
Write off of deferred debt issuance cost	'	'	'	'	'	-2,600,000	'	'	-12,733,000	-4,642,000	0
Number of aircraft sold or disposed of	'	'	'	'	10	'	'	'	46	27	38
Gain (loss) on disposal of assets	100,000	4,000,000	-3,100,000	-1,700,000	7,200,000	7,400,000	-1,300,000	-5,300,000	-722,000	8,068,000	-31,670,000
Senior Notes Due 2017 [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Write off of deferred debt issuance cost	'	'	'	'	'	'	'	'	'	-2,600,000	'
Three Hundred Sixty Four Day Term Loan And Credit Facility [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Write off of deferred debt issuance cost	'	'	'	'	'	'	'	'	'	-2,100,000	'
North America [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	230,340,000	226,397,000	177,817,000
Operating income	'	'	'	'	'	'	'	'	32,255,000	27,538,000	8,378,000
Cancellation Of Potential Financing [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	'	'	'	-8,300,000	'	'	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	'	'	'	($0.23)	'	'	'	'	'	'	'
Inventory Valuation Reserve [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	-10,500,000	'	-1,500,000	-800,000	-2,800,000	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	-8,400,000	'	-1,000,000	-500,000	-2,200,000	'	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	($0.23)	'	($0.03)	($0.01)	($0.06)	'	'	'	'	'	'
Business Restructuring Reserves [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	-800,000	-2,100,000	-500,000	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	-500,000	-1,400,000	-400,000	'	'	'	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	($0.01)	($0.04)	($0.01)	'	'	'	'	'	'	'	'
Contract Termination [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	'	-2,100,000	'	'	'	'	'	-2,200,000	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	'	-1,600,000	'	'	'	'	'	-1,700,000	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	'	($0.04)	'	'	'	'	'	$0.05	'	'	'
Tax Amnesty [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	4,200,000	-19,300,000	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	2,800,000	-12,600,000	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	$0.08	($0.34)	'	'	'	'	'	'	'	'	'
Adjustments For Error Correction [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	'	'	'	'	'	'	2,300,000	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	'	'	'	'	'	'	1,500,000	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	'	'	'	'	'	'	$0.04	'	'	'	'
Early Retirement Of Debt [Member] | Senior Notes Due 2017 [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	'	'	'	'	'	-11,400,000	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	'	'	'	'	'	($0.31)	'	'	'	'	'
Early Retirement Of Debt [Member] | Three Hundred Sixty Four Day Term Loan And Credit Facility [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	'	'	'	'	-600,000	-1,000,000	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	'	'	'	'	($0.01)	($0.03)	'	'	'	'	'
Unexecuted Sale [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	'	'	'	'	900,000	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	'	'	'	'	700,000	'	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	'	'	'	'	$0.02	'	'	'	'	'	'
Disposal Of Assets Member [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	100,000	3,100,000	-2,400,000	-1,300,000	5,500,000	6,100,000	-1,000,000	-4,200,000	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	$0	$0.09	($0.07)	($0.04)	$0.15	$0.17	($0.03)	($0.12)	'	'	'
Employee Severance [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	-4,800,000	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	-3,100,000	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	($0.09)	'	'	'	'	'	'	'	'	'	'
Damage from Fire, Explosion or Other Hazard [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	-8,600,000	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	-6,600,000	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	($0.18)	'	'	'	'	'	'	'	'	'	'
Goodwill [Member]	'	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Operating Income Impact Net	-600,000	'	'	'	'	'	'	'	'	'	'
Unusual Or Infrequent Item Net Income Impact Net	($400,000)	'	'	'	'	'	'	'	'	'	'
Unusual or Infrequent Item, Earnings Per Share Impact, Net	($0.01)	'	'	'	'	'	'	'	'	'	'

SUPPLEMENTAL_CONDENSED_CONSOLI1

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION IS (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	$440,925	$412,335	$417,328	$398,994	$391,642	$388,469	$365,754	$362,608	$1,669,582	$1,508,473	$1,341,803
Direct cost and reimbursable expense	'	'	'	'	'	'	'	'	1,186,132	1,057,794	947,650
Intercompany expenses	'	'	'	'	'	'	'	'	0	0	0
Impairment of inventories	'	'	'	'	'	'	'	'	12,669	0	25,919
Depreciation and amortization	'	'	'	'	'	'	'	'	95,977	96,284	96,144
General and administrative	'	'	'	'	'	'	'	'	199,814	163,389	135,333
Total operating expense	'	'	'	'	'	'	'	'	1,494,592	1,317,467	1,205,046
Gain (loss) on disposal of assets	100	4,000	-3,100	-1,700	7,200	7,400	-1,300	-5,300	-722	8,068	-31,670
Earnings from unconsolidated affiliates, net of losses	'	'	'	'	'	'	'	'	12,709	25,070	10,679
Operating income	47,421	29,502	53,935	56,119	62,703	74,120	47,328	39,993	186,977	224,144	115,766
Interest income	'	'	'	'	'	'	'	'	1,720	788	560
Interest expense	'	'	'	'	'	'	'	'	-44,938	-42,446	-38,130
Extinguishment of debt	'	'	'	'	'	'	'	'	0	14,932	0
Gain on sale of unconsolidated affiliate	'	'	'	'	'	'	'	'	103,924	0	0
Other income (expense), net	'	'	'	'	'	'	'	'	-2,692	-877	1,246
Income before provision for income taxes	'	'	'	'	'	'	'	'	244,991	166,677	79,442
Provision for income taxes	'	'	'	'	'	'	'	'	-57,212	-35,002	-14,201
Net income	'	'	'	'	'	'	'	'	187,779	131,675	65,241
Net income attributable to noncontrolling interests	'	'	'	'	'	'	'	'	-1,042	-1,573	-1,711
Net income attributable to Bristow Group	30,318	18,927	110,606	26,886	40,380	36,392	29,668	23,662	186,737	130,102	63,530
External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	1,669,582	1,508,473	1,341,803
Intercompany Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	0	0	0
Parent Company [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	14,754	12,537	4,981
Direct cost and reimbursable expense	'	'	'	'	'	'	'	'	0	0	0
Intercompany expenses	'	'	'	'	'	'	'	'	0	0	0
Impairment of inventories	'	'	'	'	'	'	'	'	0	'	0
Depreciation and amortization	'	'	'	'	'	'	'	'	2,835	4,588	3,687
General and administrative	'	'	'	'	'	'	'	'	64,891	52,968	39,747
Total operating expense	'	'	'	'	'	'	'	'	67,726	57,556	43,434
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	-45	0	-6
Earnings from unconsolidated affiliates, net of losses	'	'	'	'	'	'	'	'	189,209	123,586	43,626
Operating income	'	'	'	'	'	'	'	'	136,192	78,567	5,167
Interest income	'	'	'	'	'	'	'	'	127,142	115,276	96,792
Interest expense	'	'	'	'	'	'	'	'	-47,170	-44,844	-37,856
Extinguishment of debt	'	'	'	'	'	'	'	'	'	14,932	'
Gain on sale of unconsolidated affiliate	'	'	'	'	'	'	'	'	0	'	'
Other income (expense), net	'	'	'	'	'	'	'	'	-174	94	25
Income before provision for income taxes	'	'	'	'	'	'	'	'	215,990	134,161	64,128
Provision for income taxes	'	'	'	'	'	'	'	'	-29,193	-3,996	-533
Net income	'	'	'	'	'	'	'	'	186,797	130,165	63,595
Net income attributable to noncontrolling interests	'	'	'	'	'	'	'	'	-60	-63	-65
Net income attributable to Bristow Group	'	'	'	'	'	'	'	'	186,737	130,102	63,530
Parent Company [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	0	0	0
Parent Company [Member] | Intercompany Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	14,754	12,537	4,981
Guarantor Subsidiaries [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	382,454	367,356	318,233
Direct cost and reimbursable expense	'	'	'	'	'	'	'	'	219,873	208,995	184,258
Intercompany expenses	'	'	'	'	'	'	'	'	0	0	0
Impairment of inventories	'	'	'	'	'	'	'	'	6,988	'	9,212
Depreciation and amortization	'	'	'	'	'	'	'	'	43,052	38,851	36,185
General and administrative	'	'	'	'	'	'	'	'	33,925	29,252	20,595
Total operating expense	'	'	'	'	'	'	'	'	303,838	277,098	250,250
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	4,312	2,474	1,705
Earnings from unconsolidated affiliates, net of losses	'	'	'	'	'	'	'	'	0	0	0
Operating income	'	'	'	'	'	'	'	'	82,928	92,732	69,688
Interest income	'	'	'	'	'	'	'	'	3	17	200
Interest expense	'	'	'	'	'	'	'	'	-4,788	0	0
Extinguishment of debt	'	'	'	'	'	'	'	'	'	0	'
Gain on sale of unconsolidated affiliate	'	'	'	'	'	'	'	'	0	'	'
Other income (expense), net	'	'	'	'	'	'	'	'	-342	103	100
Income before provision for income taxes	'	'	'	'	'	'	'	'	77,801	92,852	69,988
Provision for income taxes	'	'	'	'	'	'	'	'	-6,292	-6,070	-7,887
Net income	'	'	'	'	'	'	'	'	71,509	86,782	62,101
Net income attributable to noncontrolling interests	'	'	'	'	'	'	'	'	0	0	0
Net income attributable to Bristow Group	'	'	'	'	'	'	'	'	71,509	86,782	62,101
Guarantor Subsidiaries [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	303,878	300,731	258,525
Guarantor Subsidiaries [Member] | Intercompany Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	78,576	66,625	59,708
Non-Guarantor Subsidiaries [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	1,365,704	1,207,742	1,083,278
Direct cost and reimbursable expense	'	'	'	'	'	'	'	'	966,259	848,799	763,392
Intercompany expenses	'	'	'	'	'	'	'	'	93,330	79,162	64,689
Impairment of inventories	'	'	'	'	'	'	'	'	5,681	'	16,707
Depreciation and amortization	'	'	'	'	'	'	'	'	50,090	52,845	56,272
General and administrative	'	'	'	'	'	'	'	'	100,998	81,169	74,991
Total operating expense	'	'	'	'	'	'	'	'	1,216,358	1,061,975	976,051
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	-4,989	5,594	-33,369
Earnings from unconsolidated affiliates, net of losses	'	'	'	'	'	'	'	'	12,666	25,070	8,679
Operating income	'	'	'	'	'	'	'	'	157,023	176,431	82,537
Interest income	'	'	'	'	'	'	'	'	1,710	704	517
Interest expense	'	'	'	'	'	'	'	'	-120,115	-112,811	-97,223
Extinguishment of debt	'	'	'	'	'	'	'	'	'	0	'
Gain on sale of unconsolidated affiliate	'	'	'	'	'	'	'	'	103,924	'	'
Other income (expense), net	'	'	'	'	'	'	'	'	-2,176	-1,074	1,121
Income before provision for income taxes	'	'	'	'	'	'	'	'	140,366	63,250	-13,048
Provision for income taxes	'	'	'	'	'	'	'	'	-21,727	-24,936	-5,781
Net income	'	'	'	'	'	'	'	'	118,639	38,314	-18,829
Net income attributable to noncontrolling interests	'	'	'	'	'	'	'	'	-982	-1,510	-1,646
Net income attributable to Bristow Group	'	'	'	'	'	'	'	'	117,657	36,804	-20,475
Non-Guarantor Subsidiaries [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	1,365,704	1,207,742	1,083,278
Non-Guarantor Subsidiaries [Member] | Intercompany Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	0	0	0
Consolidations, Eliminations [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	-93,330	-79,162	-64,689
Direct cost and reimbursable expense	'	'	'	'	'	'	'	'	0	0	0
Intercompany expenses	'	'	'	'	'	'	'	'	-93,330	-79,162	-64,689
Impairment of inventories	'	'	'	'	'	'	'	'	0	'	0
Depreciation and amortization	'	'	'	'	'	'	'	'	0	0	0
General and administrative	'	'	'	'	'	'	'	'	0	0	0
Total operating expense	'	'	'	'	'	'	'	'	-93,330	-79,162	-64,689
Gain (loss) on disposal of assets	'	'	'	'	'	'	'	'	0	0	0
Earnings from unconsolidated affiliates, net of losses	'	'	'	'	'	'	'	'	-189,166	-123,586	-41,626
Operating income	'	'	'	'	'	'	'	'	-189,166	-123,586	-41,626
Interest income	'	'	'	'	'	'	'	'	-127,135	-115,209	-96,949
Interest expense	'	'	'	'	'	'	'	'	127,135	115,209	96,949
Extinguishment of debt	'	'	'	'	'	'	'	'	'	0	'
Gain on sale of unconsolidated affiliate	'	'	'	'	'	'	'	'	0	'	'
Other income (expense), net	'	'	'	'	'	'	'	'	0	0	0
Income before provision for income taxes	'	'	'	'	'	'	'	'	-189,166	-123,586	-41,626
Provision for income taxes	'	'	'	'	'	'	'	'	0	0	0
Net income	'	'	'	'	'	'	'	'	-189,166	-123,586	-41,626
Net income attributable to noncontrolling interests	'	'	'	'	'	'	'	'	0	0	0
Net income attributable to Bristow Group	'	'	'	'	'	'	'	'	-189,166	-123,586	-41,626
Consolidations, Eliminations [Member] | External Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	0	0	0
Consolidations, Eliminations [Member] | Intercompany Customer [Member]	'	'	'	'	'	'	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Total consolidated gross revenue	'	'	'	'	'	'	'	'	($93,330)	($79,162)	($64,689)

SUPPLEMENTAL_CONDENSED_CONSOLI2

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION OCI (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]	'	'	'
Net income	$187,779	$131,675	$65,241
Currency translation adjustments	18,729	-11,982	905
Pension liability adjustment, net of tax	23,367	-28,462	-27,877
Unrealized loss on cash flow hedges, net	0	0	-2,150
Other comprehensive income	229,875	91,231	36,119
Net income attributable to noncontrolling interests	-1,042	-1,573	-1,711
Currency Translation Adjustment Attributable to Noncontrolling Interest and Temporary Equity	-1,081	0	0
Total comprehensive (income) loss attributable to noncontrolling interests	39	-1,573	-1,711
Total comprehensive income attributable to Bristow Group	229,914	89,658	34,408
Parent Company [Member]	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Net income	186,797	130,165	63,595
Currency translation adjustments	8,173	-1,186	1,480
Pension liability adjustment, net of tax	0	0	0
Unrealized loss on cash flow hedges, net	'	'	0
Other comprehensive income	194,970	128,979	65,075
Net income attributable to noncontrolling interests	-60	-63	-65
Currency Translation Adjustment Attributable to Noncontrolling Interest and Temporary Equity	0	'	'
Total comprehensive (income) loss attributable to noncontrolling interests	-60	-63	-65
Total comprehensive income attributable to Bristow Group	194,910	128,916	65,010
Guarantor Subsidiaries [Member]	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Net income	71,509	86,782	62,101
Currency translation adjustments	0	0	0
Pension liability adjustment, net of tax	0	0	0
Unrealized loss on cash flow hedges, net	'	'	0
Other comprehensive income	71,509	86,782	62,101
Net income attributable to noncontrolling interests	0	0	0
Currency Translation Adjustment Attributable to Noncontrolling Interest and Temporary Equity	0	'	'
Total comprehensive (income) loss attributable to noncontrolling interests	0	0	0
Total comprehensive income attributable to Bristow Group	71,509	86,782	62,101
Non-Guarantor Subsidiaries [Member]	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Net income	118,639	38,314	-18,829
Currency translation adjustments	-40,402	-6,383	-13,037
Pension liability adjustment, net of tax	23,367	-28,462	-27,877
Unrealized loss on cash flow hedges, net	'	'	-2,150
Other comprehensive income	101,604	3,469	-61,893
Net income attributable to noncontrolling interests	-982	-1,510	-1,646
Currency Translation Adjustment Attributable to Noncontrolling Interest and Temporary Equity	-1,081	'	'
Total comprehensive (income) loss attributable to noncontrolling interests	99	-1,510	-1,646
Total comprehensive income attributable to Bristow Group	101,703	1,959	-63,539
Consolidations, Eliminations [Member]	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Net income	-189,166	-123,586	-41,626
Currency translation adjustments	50,958	-4,413	12,462
Pension liability adjustment, net of tax	0	0	0
Unrealized loss on cash flow hedges, net	'	'	0
Other comprehensive income	-138,208	-127,999	-29,164
Net income attributable to noncontrolling interests	0	0	0
Currency Translation Adjustment Attributable to Noncontrolling Interest and Temporary Equity	0	'	'
Total comprehensive (income) loss attributable to noncontrolling interests	0	0	0
Total comprehensive income attributable to Bristow Group	($138,208)	($127,999)	($29,164)

SUPPLEMENTAL_CONDENSED_CONSOLI3

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION BS (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
In Thousands, unless otherwise specified
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	$204,341	$215,623	$261,550	$116,361
Accounts receivable	297,443	262,781	'	'
Inventories	137,463	153,969	'	'
Assets held for sale	29,276	8,290	'	'
Prepaid expenses and other current assets	53,084	35,095	'	'
Total current assets	721,607	675,758	'	'
Intercompany investment	0	0	'	'
Investment in unconsolidated affiliates	262,615	272,123	'	'
Intercompany notes receivable	0	0	'	'
Total property and equipment, at cost	2,792,123	2,414,647	'	'
Less - Accumulated depreciation and amortization	-523,372	-493,575	'	'
Total property and equipment, net	2,268,751	1,921,072	'	'
Goodwill	56,680	28,897	29,644	'
Other assets	88,604	52,842	'	'
Total assets	3,398,257	2,950,692	'	'
Accounts payable	89,818	69,821	'	'
Accrued liabilities	204,498	147,681	'	'
Current deferred taxes	12,372	0	'	'
Short-term borrowings and current maturities of long-term debt	14,207	22,323	'	'
Deferred sale leaseback advance - current	136,930	0	'	'
Total current liabilities	457,825	239,825	'	'
Long-term debt, less current maturities	827,095	764,946	'	'
Intercompany notes payable	0	0	'	'
Accrued pension liabilities	86,823	126,647	'	'
Other liabilities and deferred credits	78,126	57,196	'	'
Deferred taxes	169,519	151,121	'	'
Temporary Equity	22,283	0	'	'
Common stock	373	367	'	'
Additional paid-in capital	762,813	731,883	'	'
Retained earnings	1,245,220	1,094,803	'	'
Accumulated other comprehensive income (loss)	-156,506	-199,683	-159,239	-130,117
Treasury shares	-103,965	-26,304	'	'
Stockholders' equity	1,747,935	1,601,066	'	'
Noncontrolling interests	8,651	9,891	'	'
Total stockholders' investment	1,756,586	1,610,957	1,521,824	1,518,775
Total liabilities and stockholders' investment	3,398,257	2,950,692	'	'
Land and Building [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	145,973	108,593	'	'
Aircraft and equipment [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	2,646,150	2,306,054	'	'
Parent Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	4,640	31,853	76,609	24,075
Accounts receivable	32,280	18,498	'	'
Inventories	0	0	'	'
Assets held for sale	0	0	'	'
Prepaid expenses and other current assets	3,882	16,071	'	'
Total current assets	40,802	66,422	'	'
Intercompany investment	1,273,337	1,163,935	'	'
Investment in unconsolidated affiliates	0	0	'	'
Intercompany notes receivable	1,286,354	1,401,680	'	'
Total property and equipment, at cost	65,071	32,249	'	'
Less - Accumulated depreciation and amortization	-13,057	-10,680	'	'
Total property and equipment, net	52,014	21,569	'	'
Goodwill	0	0	'	'
Other assets	204,679	40,877	'	'
Total assets	2,857,186	2,694,483	'	'
Accounts payable	8,298	4,049	'	'
Accrued liabilities	36,442	29,534	'	'
Current deferred taxes	-7,640	-4,184	'	'
Short-term borrowings and current maturities of long-term debt	4,543	21,875	'	'
Deferred sale leaseback advance - current	0	'	'	'
Total current liabilities	41,643	51,274	'	'
Long-term debt, less current maturities	805,965	764,946	'	'
Intercompany notes payable	0	0	'	'
Accrued pension liabilities	0	0	'	'
Other liabilities and deferred credits	13,750	10,761	'	'
Deferred taxes	144,461	128,153	'	'
Temporary Equity	0	'	'	'
Common stock	373	367	'	'
Additional paid-in capital	762,813	731,883	'	'
Retained earnings	1,245,220	1,094,803	'	'
Accumulated other comprehensive income (loss)	-54,719	-62,892	'	'
Treasury shares	-103,965	-26,304	'	'
Stockholders' equity	1,849,722	1,737,857	'	'
Noncontrolling interests	1,645	1,492	'	'
Total stockholders' investment	1,851,367	1,739,349	'	'
Total liabilities and stockholders' investment	2,857,186	2,694,483	'	'
Parent Company [Member] | Land and Building [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	977	939	'	'
Parent Company [Member] | Aircraft and equipment [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	64,094	31,310	'	'
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	0	5,370	3,155	5,233
Accounts receivable	104,155	80,615	'	'
Inventories	40,864	51,970	'	'
Assets held for sale	8,505	1,268	'	'
Prepaid expenses and other current assets	3,258	12,415	'	'
Total current assets	156,782	151,638	'	'
Intercompany investment	111,435	111,435	'	'
Investment in unconsolidated affiliates	0	150	'	'
Intercompany notes receivable	0	0	'	'
Total property and equipment, at cost	1,406,625	1,219,438	'	'
Less - Accumulated depreciation and amortization	-211,385	-205,746	'	'
Total property and equipment, net	1,195,240	1,013,692	'	'
Goodwill	4,755	4,756	'	'
Other assets	1,462	1,341	'	'
Total assets	1,469,674	1,283,012	'	'
Accounts payable	67,728	44,017	'	'
Accrued liabilities	32,084	22,404	'	'
Current deferred taxes	-1,342	115	'	'
Short-term borrowings and current maturities of long-term debt	0	0	'	'
Deferred sale leaseback advance - current	136,930	'	'	'
Total current liabilities	235,400	66,536	'	'
Long-term debt, less current maturities	0	0	'	'
Intercompany notes payable	378,983	463,184	'	'
Accrued pension liabilities	0	0	'	'
Other liabilities and deferred credits	37,876	8,530	'	'
Deferred taxes	9,472	8,328	'	'
Temporary Equity	0	'	'	'
Common stock	4,996	4,996	'	'
Additional paid-in capital	9,291	9,291	'	'
Retained earnings	793,656	722,147	'	'
Accumulated other comprehensive income (loss)	0	0	'	'
Treasury shares	0	0	'	'
Stockholders' equity	807,943	736,434	'	'
Noncontrolling interests	0	0	'	'
Total stockholders' investment	807,943	736,434	'	'
Total liabilities and stockholders' investment	1,469,674	1,283,012	'	'
Guarantor Subsidiaries [Member] | Land and Building [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	49,499	48,907	'	'
Guarantor Subsidiaries [Member] | Aircraft and equipment [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	1,357,126	1,170,531	'	'
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	200,147	178,400	181,786	87,053
Accounts receivable	310,288	246,612	'	'
Inventories	96,599	101,999	'	'
Assets held for sale	20,771	7,022	'	'
Prepaid expenses and other current assets	45,944	23,263	'	'
Total current assets	673,749	557,296	'	'
Intercompany investment	0	0	'	'
Investment in unconsolidated affiliates	262,615	271,973	'	'
Intercompany notes receivable	0	0	'	'
Total property and equipment, at cost	1,320,427	1,162,960	'	'
Less - Accumulated depreciation and amortization	-298,930	-277,149	'	'
Total property and equipment, net	1,021,497	885,811	'	'
Goodwill	51,925	24,141	'	'
Other assets	50,392	149,544	'	'
Total assets	2,060,178	1,888,765	'	'
Accounts payable	157,297	101,021	'	'
Accrued liabilities	141,423	115,112	'	'
Current deferred taxes	21,354	4,069	'	'
Short-term borrowings and current maturities of long-term debt	9,664	448	'	'
Deferred sale leaseback advance - current	0	'	'	'
Total current liabilities	329,738	220,650	'	'
Long-term debt, less current maturities	21,130	0	'	'
Intercompany notes payable	1,076,292	963,687	'	'
Accrued pension liabilities	86,823	126,647	'	'
Other liabilities and deferred credits	26,500	178,525	'	'
Deferred taxes	15,586	14,640	'	'
Temporary Equity	22,283	'	'	'
Common stock	22,876	22,876	'	'
Additional paid-in capital	270,905	270,905	'	'
Retained earnings	177,159	62,602	'	'
Accumulated other comprehensive income (loss)	3,880	19,834	'	'
Treasury shares	0	0	'	'
Stockholders' equity	474,820	376,217	'	'
Noncontrolling interests	7,006	8,399	'	'
Total stockholders' investment	481,826	384,616	'	'
Total liabilities and stockholders' investment	2,060,178	1,888,765	'	'
Non-Guarantor Subsidiaries [Member] | Land and Building [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	95,497	58,747	'	'
Non-Guarantor Subsidiaries [Member] | Aircraft and equipment [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	1,224,930	1,104,213	'	'
Consolidations, Eliminations [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	-446	0	0	0
Accounts receivable	-149,280	-82,944	'	'
Inventories	0	0	'	'
Assets held for sale	0	0	'	'
Prepaid expenses and other current assets	0	-16,654	'	'
Total current assets	-149,726	-99,598	'	'
Intercompany investment	-1,384,772	-1,275,370	'	'
Investment in unconsolidated affiliates	0	0	'	'
Intercompany notes receivable	-1,286,354	-1,401,680	'	'
Total property and equipment, at cost	0	0	'	'
Less - Accumulated depreciation and amortization	0	0	'	'
Total property and equipment, net	0	0	'	'
Goodwill	0	0	'	'
Other assets	-167,929	-138,920	'	'
Total assets	-2,988,781	-2,915,568	'	'
Accounts payable	-143,505	-79,266	'	'
Accrued liabilities	-5,451	-19,369	'	'
Current deferred taxes	0	0	'	'
Short-term borrowings and current maturities of long-term debt	0	0	'	'
Deferred sale leaseback advance - current	0	'	'	'
Total current liabilities	-148,956	-98,635	'	'
Long-term debt, less current maturities	0	0	'	'
Intercompany notes payable	-1,455,275	-1,426,871	'	'
Accrued pension liabilities	0	0	'	'
Other liabilities and deferred credits	0	-140,620	'	'
Deferred taxes	0	0	'	'
Temporary Equity	0	'	'	'
Common stock	-27,872	-27,872	'	'
Additional paid-in capital	-280,196	-280,196	'	'
Retained earnings	-970,815	-784,749	'	'
Accumulated other comprehensive income (loss)	-105,667	-156,625	'	'
Treasury shares	0	0	'	'
Stockholders' equity	-1,384,550	-1,249,442	'	'
Noncontrolling interests	0	0	'	'
Total stockholders' investment	-1,384,550	-1,249,442	'	'
Total liabilities and stockholders' investment	-2,988,781	-2,915,568	'	'
Consolidations, Eliminations [Member] | Land and Building [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	0	0	'	'
Consolidations, Eliminations [Member] | Aircraft and equipment [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Total property and equipment, at cost	$0	$0	'	'

SUPPLEMENTAL_CONDENSED_CONSOLI4

SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION CF (Details) (USD $)	2 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Jan. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'
Net cash provided by (used in) operating activities	'	'	$232,094	$266,764	$231,347
Capital expenditures	'	'	-628,613	-571,425	-326,420
Deposits on assets held for sale	'	'	0	0	200
Acquisitions, net of cash received	'	'	-39,850	0	0
Proceeds from sales of joint ventures	'	'	-112,210	0	0
Proceeds from asset dispositions	'	'	289,951	314,847	239,843
Investment in unconsolidated affiliate	'	'	0	-51,179	-2,378
Net cash used in investing activities	'	'	-266,302	-307,757	-88,755
Proceeds from borrowings	'	'	533,064	675,449	159,993
Payments for contingent consideration	'	'	-6,000	0	0
Debt issuance costs	'	'	-15,523	-10,344	-871
Repayment of debt and debt redemption premiums	'	'	-512,492	-663,921	-113,419
Proceeds from assignment of aircraft purchase agreements	'	'	106,113	0	0
Dividends paid	'	'	-36,320	-28,734	-21,616
Increases (decreases) in cash related to intercompany advances and debt	'	'	0	0	0
Partial prepayment of put/call obligation	'	'	-57	-63	-63
Acquisition of noncontrolling interest	'	'	-2,078	0	-262
Repurchase of common stock	-44,200	-33,500	-77,661	-1,219	-25,085
Issuance of Common Stock	'	'	15,398	15,289	5,293
Tax benefit related to stock-based compensation	'	'	5,723	500	354
Net cash provided by (used in) financing activities	'	'	10,167	-13,043	4,324
Effect of exchange rate changes on Cash and Cash Equivalents	'	'	12,759	8,109	-1,727
Net increase (decrease) in cash and cash equivalents	'	'	-11,282	-45,927	145,189
Cash and cash equivalents at beginning of period	'	'	215,623	261,550	116,361
Cash and cash equivalents at end of period	204,341	'	204,341	215,623	261,550
Parent Company [Member]	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'
Net cash provided by (used in) operating activities	'	'	-48,173	-45,184	-31,226
Capital expenditures	'	'	-33,197	-17,532	-2,710
Deposits on assets held for sale	'	'	'	'	0
Acquisitions, net of cash received	'	'	0	'	'
Proceeds from sales of joint ventures	'	'	0	'	'
Proceeds from asset dispositions	'	'	0	0	0
Investment in unconsolidated affiliate	'	'	'	0	-2,378
Net cash used in investing activities	'	'	-33,197	-17,532	-5,088
Proceeds from borrowings	'	'	528,600	675,000	159,300
Payments for contingent consideration	'	'	0	'	'
Debt issuance costs	'	'	-15,523	-10,344	-871
Repayment of debt and debt redemption premiums	'	'	-508,060	-663,921	-95,290
Proceeds from assignment of aircraft purchase agreements	'	'	0	'	'
Dividends paid	'	'	-33,254	-11,242	29,781
Increases (decreases) in cash related to intercompany advances and debt	'	'	138,991	13,960	15,429
Partial prepayment of put/call obligation	'	'	-57	-63	-63
Acquisition of noncontrolling interest	'	'	0	'	0
Repurchase of common stock	'	'	-77,661	-1,219	-25,085
Issuance of Common Stock	'	'	15,398	15,289	5,293
Tax benefit related to stock-based compensation	'	'	5,723	500	354
Net cash provided by (used in) financing activities	'	'	54,157	17,960	88,848
Effect of exchange rate changes on Cash and Cash Equivalents	'	'	0	0	0
Net increase (decrease) in cash and cash equivalents	'	'	-27,213	-44,756	52,534
Cash and cash equivalents at beginning of period	'	'	31,853	76,609	24,075
Cash and cash equivalents at end of period	4,640	'	4,640	31,853	76,609
Guarantor Subsidiaries [Member]	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'
Net cash provided by (used in) operating activities	'	'	107,059	156,371	91,773
Capital expenditures	'	'	-482,786	-503,120	-230,858
Deposits on assets held for sale	'	'	'	'	0
Acquisitions, net of cash received	'	'	0	'	'
Proceeds from sales of joint ventures	'	'	0	'	'
Proceeds from asset dispositions	'	'	284,042	185,876	173,603
Investment in unconsolidated affiliate	'	'	'	0	0
Net cash used in investing activities	'	'	-198,744	-317,244	-57,255
Proceeds from borrowings	'	'	0	0	0
Payments for contingent consideration	'	'	0	'	'
Debt issuance costs	'	'	0	0	0
Repayment of debt and debt redemption premiums	'	'	0	0	0
Proceeds from assignment of aircraft purchase agreements	'	'	106,113	'	'
Dividends paid	'	'	34	-12,955	-24,927
Increases (decreases) in cash related to intercompany advances and debt	'	'	-19,832	176,043	-11,407
Partial prepayment of put/call obligation	'	'	0	0	0
Acquisition of noncontrolling interest	'	'	0	'	-262
Repurchase of common stock	'	'	0	0	0
Issuance of Common Stock	'	'	0	0	0
Tax benefit related to stock-based compensation	'	'	0	0	0
Net cash provided by (used in) financing activities	'	'	86,315	163,088	-36,596
Effect of exchange rate changes on Cash and Cash Equivalents	'	'	0	0	0
Net increase (decrease) in cash and cash equivalents	'	'	-5,370	2,215	-2,078
Cash and cash equivalents at beginning of period	'	'	5,370	3,155	5,233
Cash and cash equivalents at end of period	0	'	0	5,370	3,155
Non-Guarantor Subsidiaries [Member]	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'
Net cash provided by (used in) operating activities	'	'	173,654	155,577	170,800
Capital expenditures	'	'	-246,868	-202,633	-92,852
Deposits on assets held for sale	'	'	'	'	200
Acquisitions, net of cash received	'	'	-39,850	'	'
Proceeds from sales of joint ventures	'	'	-112,210	'	'
Proceeds from asset dispositions	'	'	140,147	280,831	66,240
Investment in unconsolidated affiliate	'	'	'	-51,179	0
Net cash used in investing activities	'	'	-34,361	27,019	-26,412
Proceeds from borrowings	'	'	4,464	449	693
Payments for contingent consideration	'	'	-6,000	'	'
Debt issuance costs	'	'	0	0	0
Repayment of debt and debt redemption premiums	'	'	-4,432	0	-18,129
Proceeds from assignment of aircraft purchase agreements	'	'	0	'	'
Dividends paid	'	'	-3,100	-4,537	-26,470
Increases (decreases) in cash related to intercompany advances and debt	'	'	-119,159	-190,003	-4,022
Partial prepayment of put/call obligation	'	'	0	0	0
Acquisition of noncontrolling interest	'	'	-2,078	'	0
Repurchase of common stock	'	'	0	0	0
Issuance of Common Stock	'	'	0	0	0
Tax benefit related to stock-based compensation	'	'	0	0	0
Net cash provided by (used in) financing activities	'	'	-130,305	-194,091	-47,928
Effect of exchange rate changes on Cash and Cash Equivalents	'	'	12,759	8,109	-1,727
Net increase (decrease) in cash and cash equivalents	'	'	21,747	-3,386	94,733
Cash and cash equivalents at beginning of period	'	'	178,400	181,786	87,053
Cash and cash equivalents at end of period	200,147	'	200,147	178,400	181,786
Consolidations, Eliminations [Member]	'	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'
Net cash provided by (used in) operating activities	'	'	-446	0	0
Capital expenditures	'	'	134,238	151,860	0
Deposits on assets held for sale	'	'	'	'	0
Acquisitions, net of cash received	'	'	0	'	'
Proceeds from sales of joint ventures	'	'	0	'	'
Proceeds from asset dispositions	'	'	-134,238	-151,860	0
Investment in unconsolidated affiliate	'	'	'	0	0
Net cash used in investing activities	'	'	0	0	0
Proceeds from borrowings	'	'	0	0	0
Payments for contingent consideration	'	'	0	'	'
Debt issuance costs	'	'	0	0	0
Repayment of debt and debt redemption premiums	'	'	0	0	0
Proceeds from assignment of aircraft purchase agreements	'	'	0	'	'
Dividends paid	'	'	0	0	0
Increases (decreases) in cash related to intercompany advances and debt	'	'	0	0	0
Partial prepayment of put/call obligation	'	'	0	0	0
Acquisition of noncontrolling interest	'	'	0	'	0
Repurchase of common stock	'	'	0	0	0
Issuance of Common Stock	'	'	0	0	0
Tax benefit related to stock-based compensation	'	'	0	'	0
Net cash provided by (used in) financing activities	'	'	0	0	0
Effect of exchange rate changes on Cash and Cash Equivalents	'	'	0	0	0
Net increase (decrease) in cash and cash equivalents	'	'	-446	0	0
Cash and cash equivalents at beginning of period	'	'	0	0	0
Cash and cash equivalents at end of period	($446)	'	($446)	$0	$0