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Investments in Unconsolidated Entity - Narrative (Details)
$ in Thousands
12 Months Ended
Feb. 28, 2023
USD ($)
Feb. 28, 2022
USD ($)
Feb. 28, 2021
USD ($)
Sep. 30, 2022
USD ($)
Schedule of Equity Method Investments [Line Items]        
Investment in joint venture $ 84,800      
Period of amortization (in years) 7 years      
Equity in (earnings) loss of unconsolidated subsidiaries $ (2,597) $ 0 $ 0  
AIS Joint Venture        
Schedule of Equity Method Investments [Line Items]        
Ownership percentage of investment       40.00%
Investment in joint venture 84,760 $ 0    
Excess of equity method investment from carrying amount 12,800      
AIS Joint Venture | AZZ Infrastructure Solutions        
Schedule of Equity Method Investments [Line Items]        
Equity in (earnings) loss of unconsolidated subsidiaries $ (2,600)      
AIS Joint Venture | AZZ Infrastructure Solutions | Discontinued Operations, Disposed of by Sale        
Schedule of Equity Method Investments [Line Items]        
Percentage of investment sold       0.60
Investment in joint venture       $ 84,800