v2.4.1.9

GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill Roll forward (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 31, 2015
Goodwill [Roll Forward]
Goodwill beginning balance	$ 392us-gaap_Goodwill
Foreign currency translation impact	(11)us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments
Goodwill arising from acquisitions/adjustments	0us-gaap_GoodwillAcquiredDuringPeriod
Goodwill ending balance	381us-gaap_Goodwill
Customer support & services [Member] [Member]
Goodwill [Roll Forward]
Goodwill beginning balance	55us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = keys_CustomersupportservicesMemberMember
Foreign currency translation impact	(1)us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = keys_CustomersupportservicesMemberMember
Goodwill ending balance	54us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = keys_CustomersupportservicesMemberMember
Measurement Solutions [Member]
Goodwill [Roll Forward]
Goodwill beginning balance	337us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = keys_MeasurementSolutionsMember
Foreign currency translation impact	(10)us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = keys_MeasurementSolutionsMember
Goodwill ending balance	$ 327us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = keys_MeasurementSolutionsMember

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

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

X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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

X

- Definition

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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: