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, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Earnings Per Share [Abstract]
Net income for basic and diluted earnings per share	$ 1,780	$ 1,707	$ 2,567	$ 2,659
Weighted-average shares outstanding (in shares)	689	706	691	712
Dilutive effect of equity plans (in shares)	2	2	2	2
Diluted weighted-average shares outstanding (in shares)	691	707	693	714
Basic earnings per share (in dollars per share)	$ 2.58	$ 2.42	$ 3.72	$ 3.73
Diluted earnings per share (in dollars per share)	$ 2.58	$ 2.41	$ 3.71	$ 3.72