Consolidated Statements of Stockholders' (Deficit) Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained (Deficit) Earnings	Accumulated Other Comprehensive (Loss) Income	Total HP Stockholders’ (Deficit) Equity	Non- controlling Interests of Discontinued Operations
Balance (in shares) at Oct. 31, 2013		1,907,883
Balance at Oct. 31, 2013	$ 27,656	$ 19	$ 5,465	$ 25,563	$ (3,778)	$ 27,269	$ 387
Increase (Decrease) in Stockholders' Equity
Net earnings	5,013			5,013		5,013
Other comprehensive loss, net of taxes	(2,103)				(2,103)	(2,103)
Comprehensive income	2,910					2,910
Issuance of common stock in connection with employee stock plans and other (in shares)		23,785
Issuance of common stock in connection with employee stock plans and other	$ 143		142	1		143
Repurchases of common stock (in shares)	(92,000)	(92,380)
Repurchases of common stock	$ (2,957)	$ (1)	(2,694)	(262)		(2,957)
Tax benefit (deficiency) from employee stock plans	(43)		(43)			(43)
Cash dividends declared	(1,151)			(1,151)		(1,151)
Stock-based compensation expense	560		560			560
Changes in non-controlling interest	9						9
Balance (in shares) at Oct. 31, 2014		1,839,288
Balance at Oct. 31, 2014	27,127	$ 18	3,430	29,164	(5,881)	26,731	396
Increase (Decrease) in Stockholders' Equity
Net earnings	4,554			4,554		4,554
Other comprehensive loss, net of taxes	(421)				(421)	(421)
Comprehensive income	4,133					4,133
Issuance of common stock in connection with employee stock plans and other (in shares)		39,834
Issuance of common stock in connection with employee stock plans and other	$ (33)		(34)	1		(33)
Repurchases of common stock (in shares)	(75,000)	(75,403)
Repurchases of common stock	$ (2,648)		(2,237)	(411)		(2,648)
Assumption of equity awards in connection with acquisitions	31		31			31
Tax benefit (deficiency) from employee stock plans	64		64			64
Cash dividends declared	(1,219)			(1,219)		(1,219)
Stock-based compensation expense	709		709			709
Changes in non-controlling interest	$ (13)						(13)
Balance (in shares) at Oct. 31, 2015	1,804,000	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, 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)
Tax benefit (deficiency) from employee stock plans	0
Cash dividends declared	(858)			(858)		(858)
Stock-based compensation expense	$ 182		182			182
Balance (in shares) at Oct. 31, 2016	1,712,000	1,712,091
Balance at Oct. 31, 2016	$ (3,889)	$ 17	$ 1,030	$ (3,498)	$ (1,438)	$ (3,889)	$ 0