CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 208,000	$ 111,000	$ 373,000	$ 39,000
Other comprehensive income:
Foreign currency translation adjustments, net of zero tax	42,000	10,000	87,000	(11,000)
Unrealized gain (loss) on derivative instruments and other, net of zero tax	29,000	14,000	66,000	(3,000)
Comprehensive income	$ 279,000	$ 135,000	$ 526,000	$ 25,000