Summary of Additional Information Pertaining to Stock-Based Compensation from Stock Options and Stock Awards (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
May 31, 2012	May 31, 2011	May 31, 2012	May 31, 2011
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, Weighted-average grant-date fair value	$ 11.60	$ 11.61	$ 9.83	$ 11.11
Stock options, Options granted	1	1,453	173	1,784
Stock options, Options exercised	(629)	(1,634)	(1,637)	(3,742)
Stock options, Total intrinsic value of stock options exercised	$ 14,605	$ 34,010	$ 31,864	$ 63,122
Total unrecognized compensation expense	22,927	29,036	22,927	29,036
Weighted-average remaining recognition period	2 years 146 days	2 years 256 days	2 years 146 days	2 years 256 days
Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, Weighted-average grant-date fair value	$ 32.37	$ 29.44	$ 29.99	$ 26.71
Stock awards, Stock awards granted	179	1,189	964	1,752
Stock awards, Stock awards vested	(1,241)	(1,316)	(1,688)	(1,846)
Total unrecognized compensation expense	$ 84,540	$ 105,551	$ 84,540	$ 105,551
Weighted-average remaining recognition period	2 years	2 years 219 days	2 years	2 years 219 days

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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- Definition

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

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

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

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