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Common Stock Activity (Detail) (Common Stock) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2012	May 31, 2011	May 31, 2012	May 31, 2011
Stock Options And Restricted Stock Units
Employee Stock Purchase Plan [Line Items]
Shares issued under stock option, employee stock purchase plans and RSUs	0.5	0.5	1.0	1.1
Share Repurchase Program
Employee Stock Purchase Plan [Line Items]
Shares repurchased in connection with stock repurchase program	0.5	0.8	1.3	1.9

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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