Income Taxes (Reconciliation Of The U.S. Federal Statutory Rate To The Effective Tax Rate) (Details)	12 Months Ended
Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012
Income Tax Disclosure [Abstract]
Tax at U.S. federal statutory rate	35.00%	35.00%	35.00%
Foreign rate differences	1.70%	1.50%	(1.00%)
Effects of foreign operations included in U.S. Federal provision	(2.30%)	(0.70%)	0.00%
State income taxes, net	1.60%	2.10%	0.90%
Research credits	(0.10%)	(1.50%)	0.00%
Domestic production activities deduction	(1.40%)	(2.10%)	(2.20%)
Tax-exempt interest	(0.10%)	(0.20%)	(0.30%)
Nondeductible stock-based compensation	2.80%	2.30%	3.00%
Other	(0.80%)	0.20%	(1.50%)
Total	36.40%	36.60%	33.90%

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

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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 applicable to statutory income tax expense (benefit) outside of the country of domicile.

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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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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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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