Earnings Per Share - Basic and Diluted Earnings Per Share Computation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018
Earnings Per Share [Abstract]
Net income for basic and diluted earnings per share	$ 451	$ 561	$ 787	$ 951
Weighted-average shares outstanding (in shares)	691	714	692	715
Dilutive effect of equity plans (in shares)	2	1	2	2
Diluted weighted-average shares outstanding (in shares)	693	715	694	717
Basic earnings per share (in dollars per share)	$ 0.65	$ 0.79	$ 1.14	$ 1.33
Diluted earnings per share (in dollars per share)	$ 0.65	$ 0.78	$ 1.13	$ 1.33