Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common stock	Ordinary shares	Additional paid-in capital	Retained earnings	AOCI	Treasury stock
Beginning balance at Nov. 30, 2019	$ 25,365	$ 7	$ 358	$ 8,807	$ 26,653	$ (2,066)	$ (8,394)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(5,155)				(5,155)
Other comprehensive income (loss)	103					103
Issuance of common stock through underwritten public offering (net of offering expenses and underwriters’ discount)	556	1		555
Cash dividends declared ($0.50 per share)	(342)				(342)
Equity component of Convertible Senior Notes	286			286
Purchases of treasury stock under the Repurchase Program and other	27		2	35			(10)
Ending balance at May. 31, 2020	20,840	7	360	9,683	21,155	(1,962)	(8,404)
Beginning balance at Feb. 29, 2020	24,290	7	358	8,829	25,527	(2,028)	(8,404)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(4,374)				(4,374)
Other comprehensive income (loss)	65					65
Issuance of common stock through underwritten public offering (net of offering expenses and underwriters’ discount)	556	1		555
Equity component of Convertible Senior Notes	286			286
Purchases of treasury stock under the Repurchase Program and other	16		2	12	2
Ending balance at May. 31, 2020	20,840	7	360	9,683	21,155	(1,962)	(8,404)
Beginning balance at Nov. 30, 2020	20,555	11	361	13,948	16,075	(1,436)	(8,404)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(4,045)				(4,045)
Other comprehensive income (loss)	310					310
Issuance of common stock through underwritten public offering (net of offering expenses and underwriters’ discount)	997			996
Other	60			60
Ending balance at May. 31, 2021	17,876	11	361	15,005	12,030	(1,126)	(8,404)
Beginning balance at Feb. 28, 2021	19,813	11	361	14,977	14,102	(1,233)	(8,404)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,072)				(2,072)
Other comprehensive income (loss)	107					107
Other	28			28
Ending balance at May. 31, 2021	$ 17,876	$ 11	$ 361	$ 15,005	$ 12,030	$ (1,126)	$ (8,404)