Discontinued Operations - Narrative (Q) (Details) $ in Thousands	12 Months Ended
	Feb. 28, 2023 USD ($)	Feb. 28, 2022 USD ($)	Feb. 29, 2024	Sep. 30, 2022
Discontinued Operations, Disposed of by Sale | AZZ Infrastructure Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal	$ 159,910	$ 0
AIS Joint Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage of investment			40.00%	40.00%
AIS Joint Venture | Discontinued Operations, Disposed of by Sale | AZZ Infrastructure Solutions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of investment sold				0.60