Stock Benefit Plans and Stock-Based Compensation (Summary Of Stock Option Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Nov. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Shares Underlying Stock Options, Outstanding at November 30, 2012	12,199
Number of Shares Underlying Stock Options, Granted	24
Number of Shares Underlying Stock Options, Exercised	(3,473)
Number of Shares Underlying Stock Options, Forfeited or expired	(424)
Number of Shares Underlying Stock Options, Outstanding at November 30, 2013	8,326
Number of Shares Underlying Stock Options, Vested and expected to vest at November 30, 2013	8,298
Number of Shares Underlying Stock Options, Exercisable at November 30, 2013	7,644
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted-Average Exercise Price, Outstanding (usd per share) at November 30, 2012	$ 10.45
Weighted-Average Exercise Price, Granted (usd per share)	$ 22.61
Weighted-Average Exercise Price, Exercised (usd per share)	$ 7.40
Weighted-Average Exercise Price, Forfeited or expired (usd per share)	$ 22.10
Weighted-Average Exercise Price, Outstanding (usd per share) at November 30, 2013	$ 11.60
Weighted-Average Exercise Price, Vested and expected to vest (usd per share) at November 30, 2013	$ 11.55
Weighted-Average Exercise Price, Exercisable at Outstanding, Exercisable (usd per share) at November 30, 2013	$ 10.31
Weighted-Average Remaining Contractual Term, Outstanding at November 30, 2013	1 year 10 months 4 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest at November 30, 2013 (in years)	1 year 10 months 0 days
Weighted-Average Remaining Contractual Term, Exercisable at November 30, 2013 (in years)	1 year 7 months 5 days
Aggregate Intrinsic Value, Outstanding at November 30, 2013	$ 111,001
Aggregate Intrinsic Value, Vested and expected to vest at November 30, 2013	110,978
Aggregate Intrinsic Value, Exercisable at November 30, 2013	$ 109,990

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Net number of share options (or share units) granted during the period.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest options outstanding.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Number of share options (or share units) exercised during the current period.

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