Cash Flow and Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2025 |
Aug. 31, 2026 |
Aug. 31, 2025 |
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| Supplemental Cash Flow Information [Abstract] | ||||
| Interest paid during the period | $ 1.5 | $ 1.5 | $ 3.0 | $ 3.0 |
| Income taxes paid during the period | 14.0 | 16.4 | 15.7 | 18.1 |
| Income tax refunds received during the period | 4.5 | 0.2 | 4.7 | 0.2 |
| Property, plant and equipment included in accounts payable and accrued liabilities | 0.2 | 0.0 | 0.4 | 0.0 |
| Intangibles included in accounts payable and accrued liabilities | 0.5 | 0.0 | 0.5 | 0.0 |
| Sale of long-term investment included in other receivables | $ 2.3 | $ 0.0 | $ 2.3 | $ 0.0 |
| X | ||||||||||
- Definition Intangibles included in accounts payable and accrued liabilities No definition available.
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| X | ||||||||||
- Definition Sale of long-term investment included in other receivables No definition available.
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| X | ||||||||||
- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of income tax refund received from tax jurisdiction. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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