LOSS PER SHARE - Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Computation of Basic and diluted loss per share:
Net loss	$ (262.0)	$ (206.0)
Weighted average shares outstanding—basic (in shares)	172.3	169.4
Basic loss per share (in dollars per share)	$ (1.52)	$ (1.22)
Diluted loss per share (in dollars per share)	$ (1.52)	$ (1.22)