Summary of Significant Accounting Policies and Related Information - Inventory and Cost of Goods Sold (Details) - USD ($) $ in Millions	12 Months Ended
Feb. 28, 2026	Feb. 28, 2025	Feb. 29, 2024
Summary of significant accounting policies
General and administrative expenses charged to inventory	$ 28.6	$ 23.6	$ 23.4
General and administrative expenses directly attributable to the procurement of inventory included in inventory balances	$ 10.6	$ 9.7
Cost of goods sold manufactured by vendors \| Supplier concentration risk \| Vendors in Far East
Summary of significant accounting policies
Concentration risk percentage	83.00%	79.00%	79.00%
Cost of goods sold manufactured by vendors \| Supplier concentration risk \| Vendors Located in China
Summary of significant accounting policies
Concentration risk percentage	57.00%	63.00%	62.00%
Cost of goods sold manufactured by vendors \| Supplier concentration risk \| Vendor located in Mexico
Summary of significant accounting policies
Concentration risk percentage		14.00%	12.00%
Cost of goods sold manufactured by vendors \| Supplier concentration risk \| Top two manufacturers
Summary of significant accounting policies
Concentration risk percentage	15.00%	21.00%	19.00%
Cost of goods sold manufactured by vendors \| Supplier concentration risk \| Top five suppliers
Summary of significant accounting policies
Concentration risk percentage	27.00%	36.00%	33.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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