Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019
Statement of Comprehensive Income [Abstract]
NET EARNINGS	$ 296,696	$ 233,599	$ 301,674	$ 500,343
Other comprehensive income (loss), net of taxes:
Net change in retirement benefit plan unrecognized actuarial losses	728	356	1,456	711
Net change in cash flow hedge unrecognized losses	4,251	(10,780)	(11,811)	(24,331)
Other comprehensive income (loss), net of taxes	4,979	(10,424)	(10,355)	(23,620)
TOTAL COMPREHENSIVE INCOME	$ 301,675	$ 223,175	$ 291,319	$ 476,723