Accumulated Other Comprehensive Loss (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2021	May 31, 2020
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance	$ (118,691)
Other comprehensive loss before reclassifications	(1,478)
Amounts reclassified from accumulated other comprehensive loss	4,415
Other comprehensive income (loss), net of taxes	2,937	$ (15,334)
Ending balance	(115,754)
Net Unrecognized Actuarial Losses
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance	(92,662)
Other comprehensive loss before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	659
Other comprehensive income (loss), net of taxes	659
Ending balance	(92,003)
Net Unrecognized Hedge Gains (Losses)
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance	(26,029)
Other comprehensive loss before reclassifications	(1,478)
Amounts reclassified from accumulated other comprehensive loss	3,756
Other comprehensive income (loss), net of taxes	2,278
Ending balance	$ (23,751)