Summary of Significant Accounting Policies - Rollforward of Allowance For Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Feb. 29, 2024
AZZ Infrastructure Solutions
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 1,700
Balance at end of year(3)		$ 1,700
Allowance for Credit Losses
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	419	2,347	$ 5,752
Adjustment based on aged receivables analysis	(78)	5,058	(67)
Charge-offs, net of recoveries(1)	(197)	(5,287)	338
Other(2)	0	1,699	3,676
Balance at end of year(3)	144	419	$ 2,347
Allowance for Credit Losses | AZZ Infrastructure Solutions
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Other(2)	$ 1,700	$ 3,700