Consolidated Condensed Statements of Stockholders Deficit (Unaudited) - USD ($) shares in Thousands, $ in Millions	Total	Adjustment for adoption of accounting standards	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Deficit Adjustment for adoption of accounting standards	Accumulated Other Comprehensive Loss
Balance (in shares) at Oct. 31, 2018			1,560,270
Balance at Oct. 31, 2018	$ (639)	$ (494)	$ 16	$ 663	$ (473)	$ (494)	$ (845)
Increase (Decrease) in Stockholders' Equity
Net earnings	2,764				2,764
Other comprehensive income (loss), net of taxes	(18)						(18)
Comprehensive income	2,746
Issuance of common stock in connection with employee stock plans and other (in shares)			13,827
Issuance of common stock in connection with employee stock plans and other	$ (69)			(69)
Repurchases of common stock (in shares)	(92,000)		(92,183)
Repurchases of common stock	$ (1,936)		$ (1)	(41)	(1,894)
Cash dividends declared	(971)				(971)
Stock-based compensation expense	232			232
Balance (in shares) at Jul. 31, 2019			1,481,914
Balance at Jul. 31, 2019	(1,131)		$ 15	785	(1,068)		(863)
Balance (in shares) at Apr. 30, 2019			1,506,292
Balance at Apr. 30, 2019	(1,487)	69	$ 15	723	(1,325)	69	(900)
Increase (Decrease) in Stockholders' Equity
Net earnings	1,179				1,179
Other comprehensive income (loss), net of taxes	37						37
Comprehensive income	1,216
Issuance of common stock in connection with employee stock plans and other (in shares)			1,683
Issuance of common stock in connection with employee stock plans and other	$ 17			17
Repurchases of common stock (in shares)	(26,000)		(26,061)
Repurchases of common stock	$ (527)			(14)	(513)
Cash dividends declared	(478)				(478)
Stock-based compensation expense	59			59
Balance (in shares) at Jul. 31, 2019			1,481,914
Balance at Jul. 31, 2019	$ (1,131)		$ 15	785	(1,068)		(863)
Balance (in shares) at Oct. 31, 2019	1,458,000		1,457,719
Balance at Oct. 31, 2019	$ (1,193)	$ 27	$ 15	835	(818)	$ 27	(1,225)
Increase (Decrease) in Stockholders' Equity
Net earnings	2,176				2,176
Other comprehensive income (loss), net of taxes	(380)						(380)
Comprehensive income	1,796
Issuance of common stock in connection with employee stock plans and other (in shares)			13,143
Issuance of common stock in connection with employee stock plans and other	$ (35)			(35)
Repurchases of common stock (in shares)	(97,000)		(97,365)
Repurchases of common stock	$ (1,801)		$ (1)	(63)	(1,737)
Cash dividends declared	(1,001)				(1,001)
Stock-based compensation expense	$ 221			221
Balance (in shares) at Jul. 31, 2020	1,373,000		1,373,497
Balance at Jul. 31, 2020	$ (1,986)		$ 14	958	(1,353)		(1,605)
Balance (in shares) at Apr. 30, 2020			1,429,957
Balance at Apr. 30, 2020	(743)		$ 14	926	(633)		(1,050)
Increase (Decrease) in Stockholders' Equity
Net earnings	734				734
Other comprehensive income (loss), net of taxes	(555)						(555)
Comprehensive income	179
Issuance of common stock in connection with employee stock plans and other (in shares)			2,379
Issuance of common stock in connection with employee stock plans and other	$ 23			23
Repurchases of common stock (in shares)	(59,000)		(58,839)
Repurchases of common stock	$ (1,001)			(40)	(961)
Cash dividends declared	(493)				(493)
Stock-based compensation expense	$ 49			49
Balance (in shares) at Jul. 31, 2020	1,373,000		1,373,497
Balance at Jul. 31, 2020	$ (1,986)		$ 14	$ 958	$ (1,353)		$ (1,605)