Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2024
Earnings Per Share [Abstract]
Net earnings/(loss)	$ (101.0)	$ (227.0)	$ (1,066.0)	$ (146.0)	$ (1,066.0)
Weighted Average Number of Shares Outstanding, Basic	182	181	181	180
Dilutive securities issuable-stock plans	0	0	0	0
Total weighted average diluted shares outstanding	182	181	181	180
Earnings Per Share, Basic	$ (0.56)	$ (1.26)	$ (5.87)	$ (0.81)
Earnings Per Share, Diluted	$ (0.56)	$ (1.26)	$ (5.87)	$ (0.81)