Consolidated Statements of Stockholders’ Equity (Deficit) - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Loss	Total HP Stockholders’ Equity (Deficit)	Non- controlling Interests of Discontinued Operations
Balance (in shares) at Oct. 31, 2015		1,803,719
Balance at Oct. 31, 2015	$ 28,151	$ 18	$ 1,963	$ 32,089	$ (6,302)	$ 27,768	$ 383
Increase (Decrease) in Stockholders' Equity
Separation of Hewlett Packard Enterprise	(32,527)			(37,225)	5,081	(32,144)	(383)
Net earnings	2,496			2,496		2,496
Other comprehensive (loss) income, net of taxes	(217)				(217)	(217)
Comprehensive income	2,279					2,279
Issuance of common stock in connection with employee stock plans and other (in shares)		8,227
Issuance of common stock in connection with employee stock plans and other	$ 29		29			29
Repurchases of common stock (in shares)	(100,000)	(99,855)
Repurchases of common stock	$ (1,145)	$ (1)	(1,144)			(1,145)
Cash dividends declared	(858)			(858)		(858)
Stock-based compensation expense	182		182			182
Balance (in shares) at Oct. 31, 2016		1,712,091
Balance at Oct. 31, 2016	(3,889)	$ 17	1,030	(3,498)	(1,438)	(3,889)	0
Increase (Decrease) in Stockholders' Equity
Net earnings	2,526			2,526		2,526
Other comprehensive (loss) income, net of taxes	20				20	20
Comprehensive income	2,546					2,546
Issuance of common stock in connection with employee stock plans and other (in shares)		18,532
Issuance of common stock in connection with employee stock plans and other	$ 52		52			52
Repurchases of common stock (in shares)	(80,000)	(81,043)
Repurchases of common stock	$ (1,447)	$ (1)	(926)	(520)		(1,447)
Cash dividends declared	(894)			(894)		(894)
Stock-based compensation expense	$ 224		224			224
Balance (in shares) at Oct. 31, 2017	1,650,000	1,649,580
Balance at Oct. 31, 2017	$ (3,408)	$ 16	380	(2,386)	(1,418)	(3,408)	0
Increase (Decrease) in Stockholders' Equity
Net earnings	5,327			5,327		5,327
Other comprehensive (loss) income, net of taxes	573				573	573
Comprehensive income	5,900					5,900
Issuance of common stock in connection with employee stock plans and other (in shares)		21,728
Issuance of common stock in connection with employee stock plans and other	$ 47		47			47
Repurchases of common stock (in shares)	(111,000)	(111,038)
Repurchases of common stock	$ (2,547)		(32)	(2,515)		(2,547)
Cash dividends declared	(899)			(899)		(899)
Stock-based compensation expense	$ 268		268			268
Balance (in shares) at Oct. 31, 2018	1,560,000	1,560,270
Balance at Oct. 31, 2018	$ (639)	$ 16	$ 663	$ (473)	$ (845)	$ (639)	$ 0