CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 613	$ 88	$ 93
Other comprehensive income (loss):
Foreign currency translation adjustments, net of zero tax	56	(24)	(59)
Unrealized gain (loss) on derivative instruments and other, net of tax	40	(40)	(6)
Comprehensive income	$ 709	$ 24	$ 28