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v3.25.2

Taxes - Schedule for components for deferred income taxes (Details) - USD ($) $ in Millions | May 31, 2025 | May 31, 2024
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Deferred tax assets: |  |
Tax uniform capitalization | $ 12.2 | $ 8.9
Prepublication expenses | 3.0 | 2.0
Inventory reserves | 21.8 | 22.7
Allowance for credit losses | 1.8 | 1.8
Deferred revenue | 6.2 | 5.7
Stock based compensation | 5.9 | 4.8
Other reserves | 4.4 | 5.4
Postretirement, post employment and pension obligations | 1.6 | 1.9
Tax carryforwards | 32.4 | 30.1
Lease liabilities | 27.7 | 28.7
Other | 15.0 | 15.9
Gross deferred tax assets | 132.0 | 127.9
Valuation allowance | (17.1) | (19.9)
Total deferred tax assets | 114.9 | 108.0
Deferred tax liabilities: |  |
Depreciation and amortization | (53.9) | (41.1)
Lease right-of-use assets | (24.4) | (25.5)
Research and development costs capitalized | (8.3) | (14.2)
Other | (3.7) | (4.1)
Total deferred tax liability | (90.3) | (84.9)
Total net deferred tax assets | 24.6 | $ 23.1
Foreign jurisdictions unable to be netted | $ 10.1 |

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