Acquisitions - Narrative (Details) $ in Thousands			12 Months Ended
	May 13, 2022 USD ($)	Feb. 28, 2022 USD ($)	Feb. 28, 2025 USD ($)	Feb. 29, 2024 USD ($)	Feb. 28, 2023 USD ($)
Business Acquisition [Line Items]
Goodwill			$ 703,863	$ 705,468	$ 702,512
Precoat Metals Business Division
Business Acquisition [Line Items]
Consideration transferred	$ 1,300,000
Goodwill	$ 524,816
DAAM Galvanizing Co. Ltd.
Business Acquisition [Line Items]
Consideration transferred		$ 35,500
Goodwill, expected deductible amount (as a percent)		0.50
Working capital adjustment			$ 700
Goodwill		$ 13,691