EARNINGS PER SHARE - Weighted Average Shares used to Calculate EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Basic earnings per share:
Net income	$ 613	$ 88	$ 93
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	499	509	527
Basic earnings per share (in dollars per share)	$ 1.23	$ 0.17	$ 0.18
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	499	509	527
Weighted-average ordinary share equivalents from stock options and awards (in shares)	7	3	3
Weighted-average ordinary shares and ordinary share equivalents outstanding (in shares)	506	512	530
Diluted earnings per share (in dollars per share)	$ 1.21	$ 0.17	$ 0.18