VARIABLE INTEREST ENTITIES AND OTHER INVESTMENTS IN SIGNIFICANT AFFILIATES (Details)	3 Months Ended				3 Months Ended						3 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Mar. 31, 2014 USD ($)	Mar. 31, 2013 USD ($)	Jun. 30, 2014 Bristow Aviation Holdings Limited [Member] USD ($)	Jun. 30, 2013 Bristow Aviation Holdings Limited [Member] USD ($)	Jun. 30, 2014 Bristow Aviation Holdings Limited [Member] GBP (£)	Mar. 31, 2014 Bristow Aviation Holdings Limited [Member] USD ($)	May 31, 2004 Bristow Aviation Holdings Limited [Member] GBP (£)	Apr. 30, 2004 Bristow Aviation Holdings Limited [Member]	Jun. 30, 2014 Bristow Helicopters Nigeria Ltd [Member]	Jun. 30, 2014 Pan African Airlines Nigeria Ltd [Member]	Jun. 30, 2014 Lider Taxi Aereo S.A. [Member]	Mar. 31, 2014 Lider Taxi Aereo S.A. [Member]
Variable Interest Entities And Other Investments [Line Items]
Number of variable interest entities	4
Ownership percentage in Variable Interest Entity					49.00%						40.00%	50.17%
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					155,600,000		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
Call Option Rate Over LIBOR					3.00%
Call Option Guaranteed Rate									12.00%
Put Option Guaranteed Rate										10.00%
Cash and cash equivalents	133,804,000	159,992,000	204,341,000	215,623,000	103,927,000			173,490,000
Accounts Receivable, Net, Current	310,598,000		297,443,000		358,920,000			311,641,000
Inventories	150,913,000		137,463,000		105,382,000			94,288,000
Prepaid expenses and other current assets	54,787,000		53,084,000		98,992,000			45,791,000
Assets, Current	680,395,000		721,607,000		667,221,000			625,210,000
Investment in unconsolidated affiliates	265,955,000		262,615,000		845,000			1,414,000
Property, Plant and Equipment, Net	2,442,382,000		2,268,751,000		233,078,000			217,969,000
Goodwill	57,771,000		56,680,000		42,288,000			41,218,000
Other assets	94,215,000		88,604,000		48,416,000			45,477,000
Total assets	3,540,718,000		3,398,257,000		991,848,000			931,288,000
Accounts Payable, Current	102,278,000		89,818,000		214,142,000			182,892,000
Accrued Liabilities, Current	187,790,000		204,498,000		1,468,520,000			1,405,401,000
Current deferred taxes	14,090,000		12,372,000		2,455,000			3,588,000
Long-term Debt, Current Maturities	13,851,000		14,207,000		8,172,000			9,664,000
Liabilities, Current	470,356,000		457,825,000		1,693,289,000			1,601,545,000
Total long-term debt	941,257,000		827,095,000		175,346,000			172,391,000
Accrued pension liabilities	82,365,000		86,823,000		82,365,000			86,824,000
Other liabilities and deferred credits	59,876,000		78,126,000		2,290,000			2,252,000
Deferred taxes	179,232,000		169,519,000		13,913,000			13,062,000
Temporary equity	24,245,000		22,283,000		24,245,000			22,283,000
Liabilities					1,991,448,000			1,898,357,000
Revenues	472,538,000	398,994,000			383,817,000	311,801,000
Operating Income (Loss)					16,700,000	9,131,000
Net income	$ 45,003,000	$ 26,912,000			$ (37,581,000)	$ (32,350,000)
Equity Method Investment, Ownership Percentage													41.90%	42.50%