Earnings Per Share - Basic and Diluted Earnings Per Share Computation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Earnings Per Share [Abstract]
Net income for basic and diluted earnings per share	$ 391	$ 352
Weighted-average shares outstanding (in shares)	717	725
Dilutive effect of equity plans (in shares)	2	3
Diluted weighted-average shares outstanding (in shares)	719	728
Basic earnings per share (in dollars per share)	$ 0.54	$ 0.48
Diluted earnings per share (in dollars per share)	$ 0.54	$ 0.48