Investments in Unconsolidated Entity	12 Months Ended
	Feb. 28, 2023
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Entity	Following the sale of its 60% controlling interest in the AIS JV to Fernweh, AIS is deconsolidated and the Company's retained 40% interest in the AIS JV is accounted for under the equity method of accounting. As a change of control occurred with the transaction, a new basis of accounting will occur at the AIS JV when AVAIL completes its business combination accounting for the transaction. AZZ has not presented summarized financial statements, as those statements are incomplete at this time and do not include adjustments to asset values, depreciation, or amortization that may be required once AVAIL completes its business combination accounting. We record our interest in the joint venture on a one-month lag to allow sufficient time to review and assess the joint venture’s effect on our reported results. Our investment in the AIS JV is $84.8 million, which includes an excess of $12.8 million over the underlying value of the net assets of the AIS JV. The difference will be amortized through equity in earnings of unconsolidated subsidiaries for a period of seven years. The excess basis amount may change once AVAIL completes its business combination accounting. Since the transaction closed on September 30, 2022, we recorded $2.6 million of equity in earnings during fiscal 2023. Once AVAIL completes the business combination accounting, the reported results will reflect the effects of the business combination accounting as though such values were recorded at the time the transaction closed.