Income Taxes (Reconciliation of Expected Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2021
Increase (decrease) resulting from
Income tax expense computed at statutory rate	$ (161,982)	$ (225,121)	$ (146,023)
Income tax benefit computed at statutory rate (percent)	(21.00%)	(21.00%)	(21.00%)
Tax credits	$ 25,218	$ 22,565	$ 49,522
Tax credits (percent)	3.30%	2.10%	7.10%
Depreciation and amortization	$ 4,443	$ 1,444	$ 5,872
Depreciation and amortization (Percent)	0.60%	0.20%	0.80%
Valuation allowance for deferred tax assets	$ 200	$ 300	$ 600
Valuation allowance for deferred tax assets (percent)	0.00%	0.00%	0.10%
Non-deductible compensation	$ (9,975)	$ (7,905)	$ (9,241)
Non-deductible compensation (percent)	(1.30%)	(0.70%)	(1.30%)
State taxes, net of federal income tax benefit	$ (39,307)	$ (46,139)	$ (31,378)
State taxes, net of federal income tax benefit (percent)	(5.10%)	(4.30%)	(4.50%)
Other, net	$ 303	$ (544)	$ 48
Other, net (percent)	0.00%	(0.10%)	0.00%
Income tax expense	$ (181,100)	$ (255,400)	$ (130,600)
Income tax expense (percent)	(23.50%)	(23.80%)	(18.80%)