Earnings Per Share - Basic and Diluted Earnings Per Share Computations (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2021	May 31, 2020
Earnings Per Share [Abstract]
Net income (loss) for basic and diluted earnings per share	$ (2,072)	$ (4,374)	$ (4,045)	$ (5,155)
Weighted-average shares outstanding (in shares)	1,132	721	1,113	702
Dilutive effect of equity plans (in shares)	0	0	0	0
Diluted weighted-average shares outstanding (in shares)	1,132	721	1,113	702
Basic earnings per share (in dollars per share)	$ (1.83)	$ (6.07)	$ (3.63)	$ (7.34)
Diluted earnings per share (in dollars per share)	$ (1.83)	$ (6.07)	$ (3.63)	$ (7.34)