Borrowings (Details 3) (USD $)	3 Months Ended		9 Months Ended			9 Months Ended			9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014 Credit facilities	Jul. 31, 2014 Credit facility expiring March 2017	Sep. 30, 2012 Credit facility expiring March 2017 Euro	Sep. 30, 2012 Credit facility expiring March 2017 GBP	Jul. 31, 2014 Credit facility expiring April 2019	Jul. 31, 2014 Credit facility expiring February 2015	Jul. 31, 2014 Commercial paper item	Jul. 31, 2014 Commercial paper U.S. program	Sep. 30, 2012 Commercial paper Euro program	Jul. 31, 2014 Hewlett-Packard International Bank PLC Commercial paper Euro Commercial Paper/Certificate of Deposit Programme
Debt instruments
Number of commercial paper programs											2
Commercial paper authorization by HP							$ 2,200,000,000	$ 300,000,000			$ 16,000,000,000	$ 16,000,000,000	$ 3,000,000,000	$ 500,000,000
Amount of additional commercial paper authorization for subsidiaries											1,000,000,000
Amount available under credit facility					7,500,000,000	3,000,000,000			4,500,000,000	4,500,000,000
Term of credit facility						5 years			5 years	5 years
Available borrowing resources, other than 2012 Shelf Registration	17,500,000,000		17,500,000,000		1,300,000,000						16,200,000,000
Interest expense on borrowings recognized in Consolidated Condensed Statements of Earnings
Financing interest	70,000,000	77,000,000	211,000,000	238,000,000
Interest expense	80,000,000	107,000,000	270,000,000	332,000,000
Total interest expense	$ 150,000,000	$ 184,000,000	$ 481,000,000	$ 570,000,000