Stock-Based Compensation (Tables)

3 Months Ended

Feb. 28, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Outstanding and Exercisable Stock Options

The following table summarizes the stock options outstanding and stock options exercisable as of February 28, 2013:

	Options	Weighted Average Exercise Price
Options outstanding at beginning and end of period	10,105,546	$	21.27
Options exercisable at end of period	8,538,707	$	23.76