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Investments in Unconsolidated Entity - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Feb. 29, 2024	Feb. 29, 2024	Feb. 28, 2023	Feb. 28, 2022	Sep. 30, 2022
Schedule of Equity Method Investments [Line Items]
Equity in earnings of unconsolidated subsidiaries	$ (15,407)	$ (15,407)	$ (2,597)	$ 0
Accounts receivable	142,246	142,246	156,443
Total	$ 68,651	$ 68,651	70,047
Equity Method Investee
Schedule of Equity Method Investments [Line Items]
Accounts receivable			8,400
Total			6,300
AIS Joint Venture
Schedule of Equity Method Investments [Line Items]
Ownership percentage of investment	40.00%	40.00%			40.00%
Investment in joint venture	$ 98,169	$ 98,169	$ 84,760
Excess of equity method investment from carrying amount	$ 10,200	10,200
AIS Joint Venture \| AZZ Infrastructure Solutions
Schedule of Equity Method Investments [Line Items]
Equity in earnings of unconsolidated subsidiaries		$ 15,400
AIS Joint Venture \| AZZ Infrastructure Solutions \| Discontinued Operations, Disposed of by Sale
Schedule of Equity Method Investments [Line Items]
Investment in joint venture					$ 98,200