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Taxes (Details) - Schedule of effective income tax rate reconciliation - USD ($) $ in Millions	12 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2019
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Computed federal statutory provision	21.00%	21.00%	21.00%
State income tax provision, net of federal income tax benefit	(10.40%)	2.00%	25.70%
Difference in effective tax rates on earnings of foreign subsidiaries	7.00%	1.80%	(2.40%)
Rate differential on net operating loss carrybacks	19.30%	34.20%	0.00%
GILTI inclusion	(2.70%)	(2.40%)	3.40%
Various tax credits	6.50%	0.80%	(3.10%)
Valuation allowances	25.70%	(1.10%)	2.30%
Uncertain positions	(14.60%)	(2.30%)	(6.30%)
Equity and other compensation	(8.70%)	(0.60%)	2.40%
Other, net	(3.00%)	(2.10%)	(3.00%)
Effective tax rates	40.10%	51.30%	40.00%
Total provision (benefit) for income taxes	$ (7.3)	$ (46.0)	$ 10.4

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Effective Income Tax Rate Reconciliation, Equity and Other Compensation, Percent

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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