Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 564,746	$ 296,243	$ 268,775
Net actuarial gain (loss) arising during the period	2,664	(8,412)	(10,268)
Amortization of net actuarial loss	1,575	963	218
Amortization of prior service cost	86	425	1,556
Settlement loss	0	0	356
Other comprehensive income (loss) before tax	4,325	(7,024)	(8,138)
Income tax benefit (expense) related to items of other comprehensive income (loss)	(1,168)	1,897	2,197
Other comprehensive income (loss), net of tax	3,157	(5,127)	(5,941)
Comprehensive income	$ 567,903	$ 291,116	$ 262,834