Stock-Based Compensation (Outstanding and Exercisable Stock Options) (Details) (USD $)	3 Months Ended
Feb. 28, 2015
Options
Options outstanding at beginning of period, options	11,735,042
Granted, options	0
Exercised, options	0
Cancelled, options	(20,780)
Options outstanding at end of period, options	11,714,262
Options exercisable at end of period	10,108,073
Weighted Average Exercise Price in dollars per share
Options outstanding at beginning of period, weighted average exercise price in dollars per share	$ 20.45
Granted, weighted average exercise price in dollars per share	$ 0.00
Exercised, weighted average exercise price in dollars per share	$ 0.00
Cancelled, weighted average exercise price in dollars per share	$ 16.13
Options outstanding at end of period, weighted average exercise price in dollars per share	$ 20.46
Options exercisable at end of period	$ 21.32

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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Number of options outstanding, including both vested and non-vested options.

+ References

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

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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