Borrowings (Details 3) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended			6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014 Credit facilities	Apr. 30, 2014 Credit facility expiring March 2017	Sep. 30, 2012 Credit facility expiring March 2017 Euro	Sep. 30, 2012 Credit facility expiring March 2017 GBP	Apr. 30, 2014 Credit facility expired April 2019	Apr. 30, 2014 Credit facility expired February 2015	Apr. 30, 2014 Commercial paper item	Apr. 30, 2014 Commercial paper U.S. program	Sep. 30, 2012 Commercial paper Euro program	Apr. 30, 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	17,400,000,000		17,400,000,000		1,300,000,000						16,100,000,000
Interest expense on borrowings recognized in Consolidated Condensed Statements of Earnings
Financing interest	69,000,000	81,000,000	141,000,000	161,000,000
Interest expense	91,000,000	103,000,000	190,000,000	225,000,000
Total interest expense	$ 160,000,000	$ 184,000,000	$ 331,000,000	$ 386,000,000