Summary of Significant Accounting Policies (Details 2)	12 Months Ended
Oct. 31, 2013 Item
Segment Reporting Information
Number of changes to reporting units	2
Enterprise Group
Segment Reporting Information
Number of reporting units	2
Enterprise Services
Segment Reporting Information
Number of reporting units	2

Represents the number of changes made to reporting units within a segment, during the reporting period.

No definition available.

Name:	hpq_NumberOfChangesMadeInReportingUnitsWithinSegment
Namespace Prefix:	hpq_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration