Summary of Significant Accounting Policies (Details)	12 Months Ended
	Feb. 28, 2023 USD ($) segment	Sep. 30, 2022	Feb. 28, 2022 USD ($)
Business Acquisition [Line Items]
Number of operating segments | segment	3
Amount of cash uninsured	$ (9,300,000)
Contract liability	1,300,000		$ 0
Contract assets	79,273,000		2,866,000
Inventory reserves	(7,300,000)		$ (1,100,000)
Asset impairment charges	9,600,000
Notes receivable for related parties	8,400,000
Notes payable for related parties	$ 6,300,000
Lease improvements, term of contract (in years)	10 years
Sublease income	$ 800,000
Pension liability	31,300,000
Transition Services Agreement ("TSA")
Business Acquisition [Line Items]
Revenues with TSA	$ 3,400,000
AIS Joint Venture | Discontinued Operations, Disposed of by Sale | AZZ Infrastructure Solutions
Business Acquisition [Line Items]
Percentage of investment sold		0.60
Minimum
Business Acquisition [Line Items]
Useful life	3 years
Maximum
Business Acquisition [Line Items]
Useful life	30 years