Earnings Per Share - Basic and Diluted Earnings Per Share Computations (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020
Earnings Per Share [Abstract]
Net income (loss) for basic and diluted earnings per share	$ (2,836)	$ (2,858)	$ (6,881)	$ (8,014)
Weighted-average shares outstanding (in shares)	1,133	775	1,120	727
Dilutive effect of equity plans (in shares)	0	0	0	0
Diluted weighted-average shares outstanding (in shares)	1,133	775	1,120	727
Basic earnings per share (in dollars per share)	$ (2.50)	$ (3.69)	$ (6.14)	$ (11.03)
Diluted earnings per share (in dollars per share)	$ (2.50)	$ (3.69)	$ (6.14)	$ (11.03)