SUPPLEMENTAL GUARANTOR AND NON-GUARANTOR CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Condensed consolidating statements of comprehensive income (loss)
Net income (loss)	$ 152,899	$ 145,157	$ 465,689	$ 322,619
Other comprehensive income (loss):
Foreign currency translation adjustments, net of zero tax	(15,154)	(13,960)	(24,982)	(43,457)
Unrealized gain (loss) on derivative instruments and other, net of zero tax	(22,797)	1,097	(14,505)	516
Comprehensive income	114,948	132,294	426,202	279,678
Parent | Reportable legal entities
Condensed consolidating statements of comprehensive income (loss)
Net income (loss)	152,899	145,157	465,689	322,619
Other comprehensive income (loss):
Foreign currency translation adjustments, net of zero tax	(15,154)	(13,960)	(24,982)	(43,457)
Unrealized gain (loss) on derivative instruments and other, net of zero tax	(22,797)	1,097	(14,505)	516
Comprehensive income	114,948	132,294	426,202	279,678
Guarantor Subsidiaries | Reportable legal entities
Condensed consolidating statements of comprehensive income (loss)
Net income (loss)	57,020	(27,646)	72,987	(99,978)
Other comprehensive income (loss):
Foreign currency translation adjustments, net of zero tax	42,655	(23,210)	134,273	(87,375)
Unrealized gain (loss) on derivative instruments and other, net of zero tax	(5,936)	1	(6,164)	3,425
Comprehensive income	93,739	(50,855)	201,096	(183,928)
Non-Guarantor Subsidiaries | Reportable legal entities
Condensed consolidating statements of comprehensive income (loss)
Net income (loss)	125,578	(30,345)	467,182	(57,998)
Other comprehensive income (loss):
Foreign currency translation adjustments, net of zero tax	37,167	(28,137)	108,504	(94,550)
Unrealized gain (loss) on derivative instruments and other, net of zero tax	(22,797)	1,097	(14,505)	515
Comprehensive income	139,948	(57,385)	561,181	(152,033)
Eliminations
Condensed consolidating statements of comprehensive income (loss)
Net income (loss)	(182,598)	57,991	(540,169)	157,976
Other comprehensive income (loss):
Foreign currency translation adjustments, net of zero tax	(79,822)	51,347	(242,777)	181,925
Unrealized gain (loss) on derivative instruments and other, net of zero tax	28,733	(1,098)	20,669	(3,940)
Comprehensive income	$ (233,687)	$ 108,240	$ (762,277)	$ 335,961