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, 2018	Aug. 31, 2017	Aug. 31, 2018	Aug. 31, 2017
Earnings Per Share [Abstract]
Net income for basic and diluted earnings per share	$ 1,707	$ 1,329	$ 2,659	$ 2,060
Weighted-average shares outstanding (in shares)	706	723	712	724
Dilutive effect of equity plans (in shares)	2	3	2	3
Diluted weighted-average shares outstanding (in shares)	707	726	714	727
Basic earnings per share (in dollars per share)	$ 2.42	$ 1.84	$ 3.73	$ 2.85
Diluted earnings per share (in dollars per share)	$ 2.41	$ 1.83	$ 3.72	$ 2.84