Benefit Plans (Benefit Plan Information) (Details) - USD ($) $ in Thousands	Feb. 28, 2022	Feb. 28, 2021
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 214,928	$ 209,773
Projected benefit obligation	284,291	307,992
Funded status recognized	(69,363)	(98,219)
Current liability	(630)	(639)
Noncurrent liability	(68,733)	(97,580)
Net amount recognized	(69,363)	(98,219)
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets	214,928	209,773
Projected benefit obligation	273,257	295,930
Funded status recognized	(58,329)	(86,157)
Current liability	0	0
Noncurrent liability	(58,329)	(86,157)
Net amount recognized	(58,329)	(86,157)
Restoration Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Projected benefit obligation	11,034	12,062
Funded status recognized	(11,034)	(12,062)
Current liability	(630)	(639)
Noncurrent liability	(10,404)	(11,423)
Net amount recognized	$ (11,034)	$ (12,062)