Earnings Per Share (Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2025	Aug. 31, 2024
Numerator:
Net income	$ 109,828	$ 157,329	$ 327,268	$ 464,413
Less: Distributed earnings allocated to participating securities	(113)	(143)	(339)	(406)
Less: Undistributed earnings allocated to participating securities	(633)	(1,062)	(1,779)	(3,137)
Numerator for basic earnings per share	109,082	156,124	325,150	460,870
Add: Undistributed earnings allocated to participating securities	633	1,062	1,779	3,137
Less: Undistributed earnings reallocated to participating securities	(620)	(1,032)	(1,745)	(3,047)
Numerator for diluted earnings per share	$ 109,095	$ 156,154	$ 325,184	$ 460,960
Denominator:
Weighted average shares outstanding — basic (in shares)	66,368	74,476	69,279	75,339
Effect of dilutive securities: Share-based payments (in shares)	1,369	2,154	1,364	2,226
Weighted average shares outstanding — diluted (in shares)	67,737	76,630	70,643	77,565
Basic earnings per share (in dollars per share)	$ 1.64	$ 2.10	$ 4.69	$ 6.12
Diluted earnings per share (in dollars per share)	$ 1.61	$ 2.04	$ 4.60	$ 5.94
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0	0	0