NET LOSS PER SHARE - Computation of basic and diluted earnings per share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
NET LOSS PER SHARE
Stock dividends declared	$ 0	$ 0	$ 0	$ 0
Net income (loss) on which basic and diluted earnings per share is calculated	$ (142)	$ (281)	$ (283)	$ (531)
Weighted-average shares outstanding during period
Number of shares on which basic earnings per share is calculated	229.1	226.8	228.5	226.0
Number of shares on which diluted earnings per share is calculated	229.1	226.8	228.5	226.0
Basic earnings (loss) per share	$ (0.62)	$ (1.24)	$ (1.24)	$ (2.35)
Diluted earnings (loss) per share	$ (0.62)	$ (1.24)	$ (1.24)	$ (2.35)