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Investments in Unconsolidated Entity - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Feb. 28, 2026
Nov. 30, 2025
Aug. 31, 2025
Feb. 28, 2026
Feb. 28, 2025
Feb. 29, 2024
Schedule of Equity Method Investments [Line Items]            
Equity in earnings of unconsolidated subsidiaries       $ 209,733 $ 16,163 $ 15,407
Distribution on investment in AVAIL joint venture       273,223 12,565 3,113
Loss on impairment       (45,900)    
Proceeds from return of investment on the AVAIL JV       $ 13,611 0 $ 0
AIS Joint Venture            
Schedule of Equity Method Investments [Line Items]            
Ownership percentage of investment 40.00% 40.00%   40.00%    
Equity Method Investment, Aggregate Cost     $ 13,600      
Equity in earnings of unconsolidated subsidiaries       $ 209,700    
Distribution on investment in AVAIL joint venture       204,500    
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions       286,800    
Proceeds from Equity Method Investment, Distribution, Return of Capital     273,200 273,200    
Loss on impairment   $ (45,900) $ (45,900)      
Investment in AVAIL joint venture $ 19,960     19,960 99,379  
Proceeds from return of investment on the AVAIL JV       13,600    
Income (Loss) From Equity Method Investments, Net Of Sale       3,400    
AIS Joint Venture | Revision of Prior Period, Error Correction, Adjustment            
Schedule of Equity Method Investments [Line Items]            
Equity in earnings of unconsolidated subsidiaries (9,600)     1,200 $ 8,400  
AIS Joint Venture | Discontinued Operations, Disposed of by Sale | AZZ Infrastructure Solutions            
Schedule of Equity Method Investments [Line Items]            
Investment in AVAIL joint venture $ 20,000     20,000    
Electrical Products Group            
Schedule of Equity Method Investments [Line Items]            
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions       $ 261,800