Earnings Per Share - Basic and Diluted Earnings Per Share Computation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016
Earnings Per Share [Abstract]
Net income for basic and diluted earnings per share	$ 1,329	$ 1,424	$ 2,060	$ 2,171
Weighted-average shares outstanding (in shares)	723	737	724	751
Dilutive effect of equity plans (in shares)	3	2	3	3
Diluted weighted-average shares outstanding (in shares)	726	739	727	754
Basic earnings per share (in dollars per share)	$ 1.84	$ 1.93	$ 2.85	$ 2.89
Diluted earnings per share (in dollars per share)	$ 1.83	$ 1.93	$ 2.84	$ 2.88