Pension Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2020	Feb. 28, 2019
Defined Benefit Plan Disclosure [Line Items]
Employees covered under noncontributory Pension Plan	13.00%
Compensation period preceding retirement and termination	5 years
Expected rate of return	6.50%	7.00%		7.50%
Target asset allocation, historical period	10 years
Target asset allocation, expected returns	5 years
Company contributions	$ 0	$ 3,000,000
Matching contributions	$ 1,700,000		$ 2,100,000	$ 1,700,000
United States employees contribution	100.00%
Profit sharing contributions	$ 176,000	$ 194,000		$ 206,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contributions	1,000,000.0
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contributions	$ 3,000,000.0