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Income Taxes (Reconciliation Of Statutory Rate And Effective Tax Rate) (Details)	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%	21.00%
State income taxes, net of federal income tax benefit	4.03%	4.00%	4.17%
Tax credits	(1.73%)	(4.46%)	(1.49%)
Nondeductible compensation	0.49%	0.57%	0.45%
Tax reserves and interest expense, net	0.03%	0.00%	(0.03%)
Deferred tax asset valuation allowance, net	(0.01%)	0.00%	(0.02%)
Other	(0.29%)	(0.09%)	0.18%
Effective rate	23.52%	21.02%	24.26%

X

- Definition

Effective Income Tax Rate Reconciliation, Tax Reserves and Interest Expense, Percent

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for share-based payment arrangement.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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