v2.4.1.9

SEGMENT INFORMATION Segment Assets (Details) (USD $) In Millions, unless otherwise specified	Jan. 31, 2015	Oct. 31, 2014
Segment Reporting Information [Line Items]
Assets	$ 3,029us-gaap_Assets	$ 3,050us-gaap_Assets
Measurement Solutions [Member]
Segment Reporting Information [Line Items]
Assets	1,577us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = keys_MeasurementSolutionsMember	1,740us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = keys_MeasurementSolutionsMember
Customer support & services [Member] [Member]
Segment Reporting Information [Line Items]
Assets	214us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = keys_CustomersupportservicesMemberMember	236us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = keys_CustomersupportservicesMemberMember
Segment Total [Member]
Segment Reporting Information [Line Items]
Assets	$ 1,791us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = keys_SegmentTotalMember	$ 1,976us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = keys_SegmentTotalMember

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.18)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 18

-Article 5

+ Details

Name:	us-gaap_Assets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=keys_CustomersupportservicesMemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=keys_MeasurementSolutionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=keys_SegmentTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: