SEGMENT INFORMATION (Tables)

6 Months Ended

Sep. 30, 2013

Segments [Abstract]

Schedule of revenue by segment

	Three Months Ended   September 30,						Six Months Ended   September 30,
	2013			2012			2013			2012
Business unit gross revenue from external clients:
Europe	$	185,743		$	154,111		$	352,452		$	308,068
West Africa	79,488			68,217			158,869			138,671
North America	60,718			57,321			119,300			110,031
Australia	40,466			44,839			84,464			89,341
Other International	32,247			32,139			65,222			65,614
Corporate and other	18,666			9,127			36,015			16,637
Total business unit gross revenue	$	417,328		$	365,754		$	816,322		$	728,362
Intra-business unit gross revenue:
Europe	$	—		$	2		$	—		$	65
West Africa	—			—			—			—
North America	9			54			(7		)	250
Australia	—			—			—			—
Other International	—			—			—			—
Corporate and other	1,210			591			2,073			711
Total intra-business unit gross revenue	$	1,219		$	647		$	2,066		$	1,026
Consolidated gross revenue reconciliation:
Europe	$	185,743		$	154,113		$	352,452		$	308,133
West Africa	79,488			68,217			158,869			138,671
North America	60,727			57,375			119,293			110,281
Australia	40,466			44,839			84,464			89,341
Other International	32,247			32,139			65,222			65,614
Corporate and other	19,876			9,718			38,088			17,348
Intra-business unit eliminations	(1,219		)	(647		)	(2,066		)	(1,026		)
Total consolidated gross revenue	$	417,328		$	365,754		$	816,322		$	728,362

Schedule of earnings from unconsolidated affiliates

	Three Months Ended   September 30,		Six Months Ended   September 30,
	2013	2012	2013	2012
Earnings from unconsolidated affiliates, net of losses – equity method investments:
Europe	873	2,368	3,913	4,374
North America	112	—	104	—
Other International	2,103	4,626	11,043	4,609
Total earnings from unconsolidated affiliates, net of losses – equity method investments	3,088	6,994	15,060	8,983

Schedule of consolidated operating income loss

	Three Months Ended   September 30,				Six Months Ended   September 30,
	2013		2012		2013		2012
Consolidated operating income (loss) reconciliation:
Europe	32,958		27,008		52,979		48,884
West Africa	18,231		13,430		37,484		29,561
North America	9,164		6,130		17,287		12,605
Australia	2,508		6,829		5,788		13,338
Other International	8,654		10,354		27,096		17,741
Corporate and other	(14,516	)	(15,161	)	(25,795	)	(28,231	)
Gain (loss) on disposal of assets	(3,064	)	(1,262	)	(4,785	)	(6,577	)
Total consolidated operating income	53,935		47,328		110,054		87,321

Schedule of depreciation and amortization

	Three Months Ended   September 30,		Six Months Ended   September 30,
	2013	2012	2013	2012
Depreciation and amortization:
Europe	8,206	8,444	15,454	16,008
West Africa	3,435	3,051	6,695	6,193
North America	6,057	3,107	12,196	6,373
Australia	1,908	2,504	3,797	4,987
Other International	3,586	5,300	7,216	9,333
Corporate and other	666	915	1,319	1,799
Total depreciation and amortization	23,858	23,321	46,677	44,693

Schedule of identifiable assets

	September 30,   2013		March 31,    2013
Identifiable assets:
Europe	$	933,274	$	808,568
West Africa	425,553		390,402
North America	513,223		527,710
Australia	214,234		245,757
Other International	581,738		589,361
Corporate and other	497,970		388,894
Total identifiable assets (2)	$	3,165,992	$	2,950,692

Schedule of equity method investments

Investments in unconsolidated affiliates – equity method investments:
Europe (1)	$	—	$	8,569
North America	60,621		60,517
Other International	204,527		196,751
Total investments in unconsolidated affiliates – equity method investments	$	265,148	$	265,837