CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 111,388	$ (45,169)	$ 39,320	$ 157,751
Other comprehensive income (loss):
Foreign currency translation adjustments, net of zero tax	9,997	(7,777)	(11,506)	(58,485)
Unrealized gain (loss) on derivative instruments and other, net of zero tax	13,242		(3,856)
Unrealized gain (loss) on derivative instruments and other, net of zero tax		4,635		(15,193)
Comprehensive income (loss)	$ 134,627	$ (48,311)	$ 23,958	$ 84,073