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v3.26.1

Segment Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2026 | May 31, 2025 | May 31, 2024
Segment Reporting Information [Line Items] |  |  |  |
Operating Expenses |  | $ 430.1 | $ 1,482.4 | $ 405.3
Operating Income (Loss) |  | (21.6) | (1,061.0) | 58.6
Depreciation and Amortization |  | 116.3 | 119.5 | 116.7
Interest Expense |  | 57.6 | 68.5 | 67.0
Total Assets |  | 3,346.0 | 3,443.8 |
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues |  | 899.9 | 927.0 | 936.0
Net Revenue |  | 870.4 | 894.7 | 924.2
Total Cost of Revenues |  | 461.9 | 473.3 | 460.3
Operating Expenses |  | 430.1 | 1,482.4 | 405.3
Operating Income (Loss) |  | (21.6) | (1,061.0) | 58.6
Depreciation and Amortization |  | 116.3 | 119.5 | 116.7
Interest Expense |  | 60.4 | 71.6 | 73.4
Total Assets |  | 3,346.0 | 3,443.8 | 4,548.8
Expenditures for long-lived assets |  | 51.3 | 104.6 | 111.4
Operating Segments | Food Safety |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues |  | 662.6 | 660.0 | 658.3
Net Revenue |  | 641.1 | 638.1 | 655.3
Total Cost of Revenues |  | 317.1 | 308.7 | 301.6
Operating Expenses |  | 260.6 | 1,315.1 | 271.3
Operating Income (Loss) |  | 63.4 | (985.7) | 82.4
Depreciation and Amortization |  | 104.8 | 105.0 | 102.3
Interest Expense |  | 0.0 | 0.0 | 0.0
Total Assets |  | 2,875.4 | 2,991.7 | 4,035.3
Expenditures for long-lived assets |  | 47.8 | 96.7 | 93.0
Operating Segments | Animal Safety |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues |  | 237.3 | 267.0 | 277.7
Net Revenue |  | 229.3 | 256.6 | 268.9
Total Cost of Revenues |  | 144.8 | 164.6 | 158.7
Operating Expenses |  | 60.0 | 84.7 | 70.9
Operating Income (Loss) |  | 24.5 | 7.3 | 39.3
Depreciation and Amortization |  | 11.5 | 14.5 | 14.4
Interest Expense |  | 0.0 | 0.0 | 0.0
Total Assets |  | 285.1 | 323.1 | 342.6
Expenditures for long-lived assets |  | 3.5 | 7.9 | 18.4
Intersegment Revenue |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues |  | (29.5) | (32.3) | (11.8)
Intersegment Revenue | Food Safety |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues |  | (21.5) | (21.9) | (3.0)
Intersegment Revenue | Animal Safety |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues |  | (8.0) | (10.4) | (8.8)
Corporate and Eliminations | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | [1] | 0.0 | 0.0 | 0.0
Net Revenue | [1] | 0.0 | 0.0 | 0.0
Total Cost of Revenues | [1] | 0.0 | 0.0 | 0.0
Operating Expenses | [1] | 109.5 | 82.6 | 63.1
Operating Income (Loss) | [1] | (109.5) | (82.6) | (63.1)
Depreciation and Amortization | [1] | 0.0 | 0.0 | 0.0
Interest Expense | [1] | 60.4 | 71.6 | 73.4
Total Assets | [1] | 185.5 | 129.0 | 170.9
Expenditures for long-lived assets | [1] | 0.0 | 0.0 | 0.0
Corporate and Eliminations | Intersegment Revenue |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenues | [1] | $ 0.0 | $ 0.0 | $ 0.0
[1] | Includes corporate assets, including cash and cash equivalents, marketable securities, current and deferred tax accounts, and overhead expenses not allocated to specific business segments. Also includes the elimination of intersegment transactions.

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