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Percentage of revenues attributed to a client.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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The cash outflow from construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service.

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SEGMENT INFORMATION (Details) (USD $)	3 Months Ended								12 Months Ended
SEGMENT INFORMATION (Details) (USD $)	Mar. 31, 2015 Country	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015 Customer Business_Units Segments Country	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Number of operating segments									1us-gaap_NumberOfOperatingSegments
Number of reportable segments									5us-gaap_NumberOfReportableSegments
Revenues	$ 450,355,000us-gaap_Revenues	$ 460,140,000us-gaap_Revenues	$ 475,636,000us-gaap_Revenues	$ 472,538,000us-gaap_Revenues	$ 440,925,000us-gaap_Revenues	$ 412,335,000us-gaap_Revenues	$ 417,328,000us-gaap_Revenues	$ 398,994,000us-gaap_Revenues	$ 1,858,669,000us-gaap_Revenues	$ 1,669,582,000us-gaap_Revenues	$ 1,508,473,000us-gaap_Revenues
Income (Loss) from Equity Method Investments									(3,839,000)	8,666,000	25,042,000
Operating income	27,702,000	8,916,000	44,064,000	65,192,000	47,421,000	29,502,000	53,935,000	56,119,000	145,874,000	186,977,000	224,144,000
Gain (loss) on disposal of assets	(10,300,000)	(26,300,000)	100,000	600,000	100,000	4,000,000	(3,100,000)	(1,700,000)	(35,849,000)	(722,000)	8,068,000
Capital expenditures									601,834,000	628,613,000	571,425,000
Total depreciation and amortization									114,293,000	95,977,000	96,284,000
Total identifiable assets	3,230,720,000us-gaap_Assets				3,398,257,000us-gaap_Assets				3,230,720,000us-gaap_Assets	3,398,257,000us-gaap_Assets
Total investments in unconsolidated affiliates - equity method	210,090,000us-gaap_EquityMethodInvestments				256,329,000us-gaap_EquityMethodInvestments				210,090,000us-gaap_EquityMethodInvestments	256,329,000us-gaap_EquityMethodInvestments
Long-lived assets	2,157,101,000us-gaap_NoncurrentAssets				2,268,751,000us-gaap_NoncurrentAssets				2,157,101,000us-gaap_NoncurrentAssets	2,268,751,000us-gaap_NoncurrentAssets
Construction in progress payments not allocated									232,300,000	494,500,000	140,100,000
Construction in progress within property and equipment	306,000,000us-gaap_ConstructionInProgressGross				477,900,000us-gaap_ConstructionInProgressGross				306,000,000us-gaap_ConstructionInProgressGross	477,900,000us-gaap_ConstructionInProgressGross
Number of countries in which entity operates	20								20
Percentage to client over ten percent									12.00%brs_PercentageToClientOverTenPercent	13.00%brs_PercentageToClientOverTenPercent	13.00%brs_PercentageToClientOverTenPercent
Number of clients over ten percent									1brs_NumberOfClientsOverTenPercent
Top ten clients percentage									58.10%brs_TopTenClientsPercentage
U.K. [Member]
Segment Reporting Information [Line Items]
Revenues									616,191,000	526,149,000	383,398,000
Long-lived assets	462,667,000				544,113,000				462,667,000	544,113,000
Nigeria [Member]
Segment Reporting Information [Line Items]
Revenues									327,164,000	328,793,000	296,933,000
Long-lived assets	235,914,000				256,239,000				235,914,000	256,239,000
Norway [Member]
Segment Reporting Information [Line Items]
Revenues									266,186,000	253,651,000	249,023,000
Long-lived assets	197,165,000				155,690,000				197,165,000	155,690,000
Australia [Member]
Segment Reporting Information [Line Items]
Revenues									228,774,000	168,424,000	186,752,000
Long-lived assets	241,149,000				188,370,000				241,149,000	188,370,000
United States [Member]
Segment Reporting Information [Line Items]
Revenues									222,661,000	225,650,000	237,311,000
Long-lived assets	235,434,000				128,124,000				235,434,000	128,124,000
Canada [Member]
Segment Reporting Information [Line Items]
Revenues									61,713,000	32,895,000	16,447,000
Long-lived assets	215,245,000				199,861,000				215,245,000	199,861,000
Trinidad [Member]
Segment Reporting Information [Line Items]
Revenues									59,073,000	51,770,000	43,763,000
Long-lived assets	109,248,000				64,520,000				109,248,000	64,520,000
Malaysia [Member]
Segment Reporting Information [Line Items]
Revenues									3,677,000	14,316,000	25,284,000
Long-lived assets	0				61,104,000				0	61,104,000
Brazil [Member]
Segment Reporting Information [Line Items]
Long-lived assets	80,540,000				123,439,000				80,540,000	123,439,000
Tanzania [Member]
Segment Reporting Information [Line Items]
Long-lived assets	54,845,000				42,589,000				54,845,000	42,589,000
Other countries [Member]
Segment Reporting Information [Line Items]
Revenues									73,230,000	67,934,000	69,562,000
Long-lived assets	18,882,000				26,769,000				18,882,000	26,769,000
Construction in progress attributable to aircraft [Member]
Segment Reporting Information [Line Items]
Long-lived assets	306,012,000				477,933,000				306,012,000	477,933,000
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenues									6,358,000	4,455,000	2,337,000
External Customer [Member]
Segment Reporting Information [Line Items]
Revenues									1,858,669,000	1,669,582,000	1,508,473,000
Europe [Member]
Segment Reporting Information [Line Items]
Revenues									878,147,000	740,316,000	619,545,000
Income (Loss) from Equity Method Investments									887,000	4,446,000	10,517,000
Operating income									125,016,000	114,729,000	111,785,000
Capital expenditures									192,689,000	38,294,000	175,270,000
Total depreciation and amortization									37,535,000	32,383,000	33,101,000
Total identifiable assets	874,228,000				932,803,000				874,228,000	932,803,000
Total investments in unconsolidated affiliates - equity method	0				1,067,000				0	1,067,000
Europe [Member] \| Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenues									1,309,000	0	65,000
Europe [Member] \| External Customer [Member]
Segment Reporting Information [Line Items]
Revenues									876,838,000	740,316,000	619,480,000
West Africa [Member]
Segment Reporting Information [Line Items]
Revenues									327,164,000	328,793,000	296,933,000
Operating income									86,074,000	80,053,000	70,315,000
Capital expenditures									1,330,000	24,324,000	11,501,000
Total depreciation and amortization									15,815,000	13,923,000	13,077,000
Total identifiable assets	416,939,000				454,161,000				416,939,000	454,161,000
West Africa [Member] \| External Customer [Member]
Segment Reporting Information [Line Items]
Revenues									327,164,000	328,793,000	296,933,000
North America [Member]
Segment Reporting Information [Line Items]
Revenues									234,876,000	230,340,000	226,397,000
Income (Loss) from Equity Method Investments									(710,000)	1,053,000	(736,000)
Operating income									52,943,000	32,255,000	27,538,000
Capital expenditures									73,716,000	24,427,000	201,439,000
Total depreciation and amortization									22,093,000	23,505,000	20,193,000
Total identifiable assets	574,902,000				487,659,000				574,902,000	487,659,000
Total investments in unconsolidated affiliates - equity method	61,015,000				61,570,000				61,015,000	61,570,000
North America [Member] \| Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenues									20,000	3,000	283,000
North America [Member] \| External Customer [Member]
Segment Reporting Information [Line Items]
Revenues									234,856,000	230,337,000	226,114,000
Other International [Member]
Segment Reporting Information [Line Items]
Revenues									135,753,000	134,021,000	132,662,000
Income (Loss) from Equity Method Investments									(4,016,000)	3,167,000	15,261,000
Operating income									18,609,000	33,769,000	45,201,000
Capital expenditures									51,139,000	28,136,000	33,147,000
Total depreciation and amortization									15,591,000	15,024,000	17,018,000
Total identifiable assets	559,137,000				579,571,000				559,137,000	579,571,000
Total investments in unconsolidated affiliates - equity method	149,075,000				193,692,000				149,075,000	193,692,000
Other International [Member] \| Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenues									(227,000)	0	0
Other International [Member] \| External Customer [Member]
Segment Reporting Information [Line Items]
Revenues									135,980,000	134,021,000	132,662,000
Australia [Member]
Segment Reporting Information [Line Items]
Revenues									229,028,000	168,424,000	186,752,000
Operating income									6,017,000	5,523,000	25,283,000
Capital expenditures									23,077,000	7,058,000	3,736,000
Total depreciation and amortization									22,341,000	8,728,000	9,995,000
Total identifiable assets	391,852,000				260,483,000				391,852,000	260,483,000
Australia [Member] \| Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenues									254,000	0	0
Australia [Member] \| External Customer [Member]
Segment Reporting Information [Line Items]
Revenues									228,774,000	168,424,000	186,752,000
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues									60,059,000	72,143,000	48,521,000
Operating income									(106,936,000)	(78,630,000)	(64,046,000)
Capital expenditures									259,883,000	506,374,000	146,332,000
Total depreciation and amortization									918,000	2,414,000	2,900,000
Total identifiable assets	413,662,000				683,580,000				413,662,000	683,580,000
Corporate and Other [Member] \| Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenues									5,002,000	4,452,000	1,989,000
Corporate and Other [Member] \| External Customer [Member]
Segment Reporting Information [Line Items]
Revenues									55,057,000	67,691,000	46,532,000
FB Entities [Member]
Segment Reporting Information [Line Items]
Equity investment ownership percentage											50.00%
Income (Loss) from Equity Method Investments									$ 0	$ 3,217,000	$ 10,517,000
Helideck Certification Agency [Member]
Segment Reporting Information [Line Items]
Equity investment ownership percentage					50.00%					50.00%