Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment		Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjustment	[1]	Equity Attributable to the Company	Equity Attributable to the Company Cumulative Effect, Period of Adoption, Adjustment	[2]	Non-controlling Interests	Total Equity	Total Equity Cumulative Effect, Period of Adoption, Adjustment	[2]
Balance at beginning of period (in shares) at Oct. 31, 2019		1,294,369
Balance at beginning of period at Oct. 31, 2019		$ 13	$ 28,444	$ (7,632)	$ 43	[1]	$ (3,727)	$ (43)		$ 17,098			$ 51	$ 17,149
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)				(479)						(479)			7	(472)
Other comprehensive income	$ 14						14			14				14
Comprehensive income (loss)										(465)			7	(458)
Stock-based compensation expense			216							216				216
Tax withholding related to vesting of employee stock plans			(85)							(85)				(85)
Issuance of common stock in connection with employee stock plans and other (in shares)		16,393
Issuance of common stock in connection with employee stock plans and other			46							46			1	47
Repurchases of common stock (in shares)		(24,756)
Repurchases of common stock			(346)							(346)				(346)
Cash dividends declared				(309)						(309)			(8)	(317)
Balance at beginning of period (in shares) at Jul. 31, 2020		1,286,006
Balance at end of period at Jul. 31, 2020		$ 13	28,275	(8,377)			(3,756)			16,155			51	16,206
Balance at beginning of period (in shares) at Apr. 30, 2020		1,282,253
Balance at beginning of period at Apr. 30, 2020		$ 13	28,207	(8,385)			(3,625)			16,210			48	16,258
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)				9						9			3	12
Other comprehensive income	$ (131)						(131)			(131)				(131)
Comprehensive income (loss)										(122)			3	(119)
Stock-based compensation expense			55							55				55
Tax withholding related to vesting of employee stock plans			(7)							(7)				(7)
Issuance of common stock in connection with employee stock plans and other (in shares)		3,753
Issuance of common stock in connection with employee stock plans and other			20	(1)						19				19
Balance at beginning of period (in shares) at Jul. 31, 2020		1,286,006
Balance at end of period at Jul. 31, 2020		$ 13	28,275	(8,377)			(3,756)			16,155			51	16,206
Balance at beginning of period (in shares) at Oct. 31, 2020	1,287,000	1,287,010
Balance at beginning of period at Oct. 31, 2020	$ 16,096	$ 13	28,350	(8,375)	$ (25)	[2]	(3,939)			16,049	$ (25)		47	16,096	$ (25)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)				874						874			6	880
Other comprehensive income	$ 308						308			308				308
Comprehensive income (loss)										1,182			6	1,188
Stock-based compensation expense			304							304				304
Tax withholding related to vesting of employee stock plans			(72)							(72)				(72)
Issuance of common stock in connection with employee stock plans and other (in shares)		20,053
Issuance of common stock in connection with employee stock plans and other			50							50				50
Cash dividends declared				(468)						(468)				(468)
Balance at beginning of period (in shares) at Jul. 31, 2021	1,307,000	1,307,063
Balance at end of period at Jul. 31, 2021	$ 17,073	$ 13	28,632	(7,994)			(3,631)			17,020			53	17,073
Balance at beginning of period (in shares) at Apr. 30, 2021		1,304,138
Balance at beginning of period at Apr. 30, 2021		$ 13	28,538	(8,229)			(3,762)			16,560			51	16,611
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)				392						392			2	394
Other comprehensive income	$ 131						131			131				131
Comprehensive income (loss)										523			2	525
Stock-based compensation expense			86							86				86
Tax withholding related to vesting of employee stock plans			(11)							(11)				(11)
Issuance of common stock in connection with employee stock plans and other (in shares)		2,925
Issuance of common stock in connection with employee stock plans and other			19							19				19
Cash dividends declared				(157)						(157)				(157)
Balance at beginning of period (in shares) at Jul. 31, 2021	1,307,000	1,307,063
Balance at end of period at Jul. 31, 2021	$ 17,073	$ 13	$ 28,632	$ (7,994)			$ (3,631)			$ 17,020			$ 53	$ 17,073

[1] Represents the impact of the adoption of an accounting standard update that allows for the reclassification of stranded tax effects from accumulated other comprehensive loss toaccumulated deficit.

[2] Represents the impact of the adoption of the accounting standard on the measurement of credit losses on financial assets.