Discontinued Operations - Discontinued Operations in Consolidated Statements of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations	$ 0	$ 0	$ (119,313)
Loss per common share from discontinued operations:
Earnings (loss) per common share from discontinued operations (in dollars per share)	$ 0	$ 0	$ (4.81)
Earnings (loss) per common share from discontinued operations (in dollars per share)	$ 0	$ 0	$ (4.78)
Discontinued Operations, Disposed of by Sale \| AZZ Infrastructure Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales			$ 256,224
Cost of sales			202,707
Gross margin			53,517
Selling, general and administrative			26,186
Loss on disposal			159,910
Operating income (loss) from discontinued operations			(132,579)
Interest expense			8
Other (income) expense, net			6,270
Income (loss) from discontinued operations before income tax			(138,857)
Income tax (benefit) expense			(19,544)
Net income (loss) from discontinued operations			$ (119,313)
Loss per common share from discontinued operations:
Earnings (loss) per common share from discontinued operations (in dollars per share)			$ (4.81)
Earnings (loss) per common share from discontinued operations (in dollars per share)			$ (4.78)

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