Basis of Presentation (Details) (Aruba, Subsequent Event, USD $) In Billions, except Per Share data, unless otherwise specified	0 Months Ended
Mar. 02, 2015	Mar. 02, 2015
Aruba \| Subsequent Event
Subsequent Event.
Date when business acquisition agreement was executed	Mar. 02, 2015
Price payable per share	$ 24.67	$ 24.67
Equity value	$ 3.00
Equity value net of cash and debt acquired	$ 2.70

Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. net of the cash acquired and debt assumed.

No definition available.

+ Details

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Namespace Prefix:	hpq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)(1)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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- Details

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