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		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2021
NET LOSS PER SHARE
Stock dividends declared	$ 0		$ 0	$ 0	$ 0
Net income (loss) on which basic and diluted earnings per share is calculated	$ (229)	$ (494)	$ (340)	$ (1,374)	$ (2,304)
Number of shares on which basic earnings per share is calculated	224.4	224.1	229.2	226.7	224.1
Number of shares on which diluted earnings per share is calculated	224.4	224.1	229.2	226.7	224.1
Basic earnings (loss) per share	$ (1.02)	$ (2.20)	$ (1.48)	$ (6.06)	$ (10.28)
Diluted earnings (loss) per share	$ (1.02)	$ (2.20)	$ (1.48)	$ (6.06)	$ (10.28)