Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	[2]	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	[2]	Equity Attributable to the Company	Equity Attributable to the Company Cumulative Effect, Period of Adoption, Adjustment	[1]	Non-controlling Interests	Total Equity	Total Equity Cumulative Effect, Period of Adoption, Adjustment	[1]
Balance at beginning of period (in shares) at Oct. 31, 2018				1,423,303
Balance at beginning of period at Oct. 31, 2018				$ 14	$ 30,342	$ (5,899)			$ (3,218)			$ 21,239			$ 35	$ 21,274
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings						596						596			8	604
Other comprehensive income	$ 38								38			38				38
Comprehensive (loss) income												634			8	642
Stock-based compensation expense					151							151				151
Tax withholding related to vesting of employee stock plans					(50)							(50)				(50)
Issuance of common stock in connection with employee stock plans and other (in shares)				12,667
Issuance of common stock in connection with employee stock plans and other					57							57				57
Repurchases of common stock (in shares)				(89,738)
Repurchases of common stock				$ (1)	(1,370)							(1,371)				(1,371)
Cash dividends declared						(300)						(300)				(300)
Balance at beginning of period (in shares) at Apr. 30, 2019				1,346,232
Balance at end of period at Apr. 30, 2019				$ 13	29,130	(7,765)	$ (2,162)	[1]	(3,180)			18,198	$ (2,162)		43	18,241	$ (2,162)
Balance at beginning of period (in shares) at Jan. 31, 2019				1,378,105
Balance at beginning of period at Jan. 31, 2019				$ 14	29,607	(8,034)			(3,294)			18,293			42	18,335
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings						419						419			1	420
Other comprehensive income	$ 114								114			114				114
Comprehensive (loss) income												533			1	534
Stock-based compensation expense					74							74				74
Tax withholding related to vesting of employee stock plans					(5)							(5)				(5)
Issuance of common stock in connection with employee stock plans and other (in shares)				4,014
Issuance of common stock in connection with employee stock plans and other					29							29				29
Repurchases of common stock (in shares)				(35,887)
Repurchases of common stock				$ (1)	(575)							(576)				(576)
Cash dividends declared						(150)						(150)				(150)
Balance at beginning of period (in shares) at Apr. 30, 2019				1,346,232
Balance at end of period at Apr. 30, 2019				$ 13	29,130	(7,765)	(2,162)	[1]	(3,180)			18,198	$ (2,162)		43	18,241	$ (2,162)
Balance at beginning of period (in shares) at Oct. 31, 2019	1,294,000			1,294,369
Balance at beginning of period at Oct. 31, 2019	$ 17,149			$ 13	28,444	(7,632)			(3,727)			17,098			51	17,149
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings						(488)						(488)			4	(484)
Other comprehensive income	$ 145								145			145				145
Comprehensive (loss) income												(343)			4	(339)
Stock-based compensation expense					161							161				161
Tax withholding related to vesting of employee stock plans					(78)							(78)				(78)
Issuance of common stock in connection with employee stock plans and other (in shares)				12,640
Issuance of common stock in connection with employee stock plans and other					26	1						27			1	28
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 Apr. 30, 2020	1,282,000			1,282,253
Balance at end of period at Apr. 30, 2020	$ 16,258	$ 0		$ 13	28,207	(8,385)	43	[2]	(3,625)	$ (43)		16,210			48	16,258
Balance at beginning of period (in shares) at Jan. 31, 2020				1,292,903
Balance at beginning of period at Jan. 31, 2020				$ 13	28,287	(7,411)			(3,700)			17,189			54	17,243
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings						(821)						(821)			2	(819)
Other comprehensive income	$ 75								75			75				75
Comprehensive (loss) income												(746)			2	(744)
Stock-based compensation expense					68							68				68
Tax withholding related to vesting of employee stock plans					(6)							(6)				(6)
Issuance of common stock in connection with employee stock plans and other (in shares)				1,279
Issuance of common stock in connection with employee stock plans and other					0							0				0
Repurchases of common stock (in shares)				(11,929)
Repurchases of common stock					(142)							(142)				(142)
Cash dividends declared						(153)						(153)			(8)	(161)
Balance at beginning of period (in shares) at Apr. 30, 2020	1,282,000			1,282,253
Balance at end of period at Apr. 30, 2020	$ 16,258	$ 0		$ 13	$ 28,207	$ (8,385)	$ 43	[2]	$ (3,625)	$ (43)		$ 16,210			$ 48	$ 16,258

[1] $2.3 billion was related to a reduction to retained earnings as a result of the adoption of an accounting standard update for Income Taxes and $143 million was related to an addition to retained earnings as a result of the adoption of the new revenue accounting standard.

[2] 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 to accumulated deficit.