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Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2024	Aug. 31, 2023	Nov. 30, 2023
Income Tax Disclosure [Abstract]
Tax benefits from share-based compensation		$ 1,900,000	$ 6,500,000	$ 5,700,000
Income tax credits and adjustments	$ 3,900,000	6,900,000	12,800,000	19,400,000
Nondeductible expense	2,400,000	$ 2,600,000	7,900,000	$ 9,200,000
Deferred tax assets	130,700,000		130,700,000		$ 136,400,000
Deferred tax assets, valuation allowance	16,900,000		16,900,000		$ 16,900,000
Adjustments to deferred tax valuation allowance			0
State and Local Jurisdiction
Effective Income Tax Rate Reconciliation [Line Items]
Decrease in income taxes	$ 2,400,000		$ 5,300,000

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