SEGMENT INFORMATION (Tables)

3 Months Ended

Jun. 30, 2012

Segments [Abstract]

Schedule of revenue by segment

			Three Months Ended June 30,
			2012		2011
Segment gross revenue from external clients:
	Europe		$	153,957	$	134,280
	West Africa			70,454		54,507
	North America			52,710		44,167
	Australia			44,502		45,295
	Other International			33,475		35,467
	Corporate and other			7,510		7,389
		Total segment gross revenue	$	362,608	$	321,105
Intrasegment gross revenue:
	Europe		$	63	$	258
	West Africa			0		0
	North America			196		75
	Australia			0		118
	Other International			0		0
	Corporate and other			120		(444)
		Total intrasegment gross revenue	$	379	$	7
Consolidated gross revenue reconciliation:
	Europe		$	154,020	$	134,538
	West Africa			70,454		54,507
	North America			52,906		44,242
	Australia			44,502		45,413
	Other International			33,475		35,467
	Corporate and other			7,630		6,945
	Intrasegment eliminations			(379)		(7)
		Total consolidated gross revenue	$	362,608	$	321,105

Schedule of earnings from unconsolidated affiliates

				Three Months Ended June 30,
				2012		2011
Earnings from unconsolidated affiliates, net of losses – equity method
	investments:
		Europe		$	2,006	$	2,858
		Other International			(17)		3,135
			Total earnings from unconsolidated affiliates, net of losses – equity method investments	$	1,989	$	5,993

Schedule of consolidated operating income loss

			Three Months Ended June 30,
			2012		2011
Consolidated operating income (loss) reconciliation:
	Europe		$	21,876	$	23,249
	West Africa			16,131		11,231
	North America			6,475		1,584
	Australia			6,509		4,524
	Other International			7,387		11,910
	Corporate and other			(13,070)		(17,509)
	Gain (loss) on disposal of assets			(5,315)		1,416
		Total consolidated operating income	$	39,993	$	36,405

Schedule of depreciation and amortization

			Three Months Ended June 30,
			2012		2011
Depreciation and amortization:
	Europe		$	7,564	$	7,907
	West Africa			3,142		3,270
	North America			3,266		3,687
	Australia			2,483		3,122
	Other International			4,033		3,963
	Corporate and other			884		759
		Total depreciation and amortization	$	21,372	$	22,708

Schedule of identifiable assets

			June 30,		March 31,
			2012		2012
Identifiable assets:
	Europe		$	850,131	$	779,160
	West Africa			384,242		376,903
	North America			290,428		276,074
	Australia			263,813		295,895
	Other International			561,677		602,174
	Corporate and other			390,088		410,157
		Total identifiable assets (1)	$	2,740,379	$	2,740,363

Schedule of equity method investments

				June 30,		March 31,
				2012		2012
Investments in unconsolidated affiliates – equity method investments:
	Europe			$	6,889	$	11,410
	Other International				184,170		184,922
	Corporate and other				3,228		2,378
		Total investments in unconsolidated affiliates – equity method		$	194,287	$	198,710
			investments