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v3.21.2

Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions | May 31, 2021 | May 31, 2020
--- | --- | ---
Income Taxes [Abstract] |  |
Compensation and employee benefit liabilities | $ 53.0 | $ 37.6
Other current liabilities | 19.8 | 8.0
Tax credit carry forward | 0.2 | 0.2
Stock-based compensation | 12.0 | 16.8
Leases | 29.0 | 34.2
Net operating loss ("NOL") carry forwards | 7.6 | 9.7
Tax benefit of uncertain tax positions | 5.3 | 7.0
Other |  | 0.5
Gross deferred tax assets | 126.9 | 114.0
Deferred contract costs | 127.5 | 122.8
Capitalized software | 49.0 | 45.7
Depreciation | 8.9 | 11.4
Goodwill and Intangible assets | 111.3 | 117.4
Operating lease right-of-use assets | 26.1 | 29.3
Revenue not subject to current taxes | 1.9 | 3.7
Unrealized gains on available-for-sale securities | 20.2 | 24.5
Gross deferred tax liabilities | 344.9 | 354.8
Net deferred tax liability | $ (218.0) | $ (240.8)

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