EARNINGS (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Basic earnings (loss) per share:
Net income	$ 111,388	$ (45,169)	$ 39,320	$ 157,751
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	506,938	524,876	511,198	528,528
Basic earnings (losses) per share (in dollars per share)	$ 0.22	$ (0.09)	$ 0.08	$ 0.30
Diluted earnings (loss) per share:
Net income	$ 111,388	$ (45,169)	$ 39,320	$ 157,751
Shares used in computation:
Weighted-average ordinary shares outstanding (in shares)	506,938	524,876	511,198	528,528
Weighted-average ordinary share equivalents from stock options and restricted share unit awards (in shares)	3,401	0	3,351	3,780
Weighted-average ordinary shares and ordinary share equivalents outstanding (in shares)	510,339	524,876	514,549	532,308
Diluted earnings (losses) per share (in dollars per share)	$ 0.22	$ (0.09)	$ 0.08	$ 0.30
Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Restricted share unit awards excluded from computation of diluted earnings per share due to their anti-dilutive impact (in shares)	3,700		4,000	6,600