Stock-Based Compensation - Summary of Stock Option Activity (Details) - Stock Options - $ / shares shares in Millions	3 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period, Number of Shares	4.8	4.9
Exercised, Number of Shares	0.3	0.1
Outstanding at end of period, Number of Shares	4.5	4.8
Excercisable at end of the period, Number of Shares	3.5	3.7
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	$ 71.91	$ 66.00
Exercised, Weighted-Average Exercise Price	54.84	63.75
Outstanding at end of period, Weighted-Average Exercise Price	73.04	66.04
Exercisable at end of the period, Weighted-Average Exercise Price	$ 66.37	$ 59.93