Earnings (Loss) Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Earnings Per Share, Basic and Diluted [Abstract]
Net income (loss) attributable to Class A and Common Shares	$ (24.2)	$ (39.8)
Weighted average Shares of Class A Stock and Common Stock outstanding for basic earnings (loss) per share	34.4	34.3
Earnings (loss) per share of Class A Stock and Common Stock:
Basic (in Dollars per share)	$ (0.70)	$ (1.16)
Diluted (in Dollars per share)	$ (0.70)	$ (1.16)
Weighted Average Number Diluted Shares Outstanding Adjustment	0.0	0.0
Weighted Average Number of Shares Outstanding, Diluted	34.4	34.3