Stock-Based Compensation-Summary of Stock Option Activity (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at end of period, Number of Shares	4.3	4.6
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period, Number of Shares	4.6	5.1
Exercised, Number of Shares	0.3	0.5
Excercisable at end of the period, Number of Shares	2.4	2.2
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding at beginning of period, Weighted-Average Exercise Price	$ 47.73	$ 40.06
Exercised, Weighted-Average Exercise Price	$ 32.19	$ 29.96
Outstanding at end of period, Weighted-Average Exercise Price	$ 48.87	$ 41.15
Exercisable at end of the period, Weighted-Average Exercise Price	$ 40.98	$ 36.10