Consolidated Condensed Statements of Stockholders Deficit (Unaudited) - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity
Adjustment for adoption of accounting standards	$ (563)			$ (563)
Balance (in shares) at Oct. 31, 2018		1,560,270
Balance at Oct. 31, 2018	(639)	$ 16	$ 663	(473)	$ (845)
Increase (Decrease) in Stockholders' Equity
Net earnings	1,585			1,585
Other comprehensive income (loss), net of taxes	(55)				(55)
Comprehensive income	1,530
Issuance of common stock in connection with employee stock plans and other (in shares)		12,144
Issuance of common stock in connection with employee stock plans and other	$ (86)		(86)
Repurchases of common stock (in shares)	(66,000)	(66,122)
Repurchases of common stock	$ (1,409)	$ (1)	(27)	(1,381)
Cash dividends declared	(493)			(493)
Stock-based compensation expense	173		173
Balance (in shares) at Apr. 30, 2019		1,506,292
Balance at Apr. 30, 2019	(1,487)	$ 15	723	(1,325)	(900)
Balance (in shares) at Jan. 31, 2019		1,539,372
Balance at Jan. 31, 2019	(1,837)	$ 15	666	(1,431)	(1,087)
Increase (Decrease) in Stockholders' Equity
Net earnings	782			782
Other comprehensive income (loss), net of taxes	187				187
Comprehensive income	969
Issuance of common stock in connection with employee stock plans and other (in shares)		765
Issuance of common stock in connection with employee stock plans and other	$ 5		5
Repurchases of common stock (in shares)	(34,000)	(33,845)
Repurchases of common stock	$ (693)		(14)	(679)
Cash dividends declared	3			3
Stock-based compensation expense	66		66
Balance (in shares) at Apr. 30, 2019		1,506,292
Balance at Apr. 30, 2019	(1,487)	$ 15	723	(1,325)	(900)
Increase (Decrease) in Stockholders' Equity
Adjustment for adoption of accounting standards	$ 27			27
Balance (in shares) at Oct. 31, 2019	1,458,000	1,457,719
Balance at Oct. 31, 2019	$ (1,193)	$ 15	835	(818)	(1,225)
Increase (Decrease) in Stockholders' Equity
Net earnings	1,442			1,442
Other comprehensive income (loss), net of taxes	175				175
Comprehensive income	1,617
Issuance of common stock in connection with employee stock plans and other (in shares)		10,763
Issuance of common stock in connection with employee stock plans and other	$ (58)		(58)
Repurchases of common stock (in shares)	(39,000)	(38,525)
Repurchases of common stock	$ (800)	$ (1)	(23)	(776)
Cash dividends declared	(508)			(508)
Stock-based compensation expense	$ 172		172
Balance (in shares) at Apr. 30, 2020	1,430,000	1,429,957
Balance at Apr. 30, 2020	$ (743)	$ 14	926	(633)	(1,050)
Balance (in shares) at Jan. 31, 2020		1,433,346
Balance at Jan. 31, 2020	(1,634)	$ 14	866	(1,306)	(1,208)
Increase (Decrease) in Stockholders' Equity
Net earnings	764			764
Other comprehensive income (loss), net of taxes	158				158
Comprehensive income	922
Issuance of common stock in connection with employee stock plans and other (in shares)		954
Issuance of common stock in connection with employee stock plans and other	$ 0
Repurchases of common stock (in shares)	(4,000)	(4,343)
Repurchases of common stock	$ (97)		(3)	(94)
Cash dividends declared	3			3
Stock-based compensation expense	$ 63		63
Balance (in shares) at Apr. 30, 2020	1,430,000	1,429,957
Balance at Apr. 30, 2020	$ (743)	$ 14	$ 926	$ (633)	$ (1,050)