Goodwill and Other Intangible Assets, Net - Intangible assets (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Amortizable intangible assets:
Gross carrying amount	$ 241.5	$ 62.5
Intangible assets, accumulated amortization	(13.3)	(6.0)
Unamortized balance of the license	228.2	56.5
Unamortized intangible assets:
Unamortized intangible assets, Gross	248.7	69.7
Intangible assets, net	235.4	63.7
Amortization expense	$ 7.3	1.3	$ 1.1
Minimum
Unamortized intangible assets:
Useful life	12 years
Maximum
Unamortized intangible assets:
Useful life	20 years
Trademarks
Unamortized intangible assets:
Unamortized intangible assets, Gross	$ 7.2	7.2
Intangible assets, net	7.2	7.2
Customer relationships
Amortizable intangible assets:
Gross carrying amount	136.2	40.5
Intangible assets, accumulated amortization	(11.0)	(5.8)
Unamortized balance of the license	125.2	34.7
Developed technology
Amortizable intangible assets:
Gross carrying amount	105.3	22.0
Intangible assets, accumulated amortization	(2.3)	(0.2)
Unamortized balance of the license	$ 103.0	$ 21.8