Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

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- Definition

Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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Balance Type:	credit
Period Type:	instant

- Definition

The estimated minimum amount of possible loss from the contingency.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

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Balance Type:	debit
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- Definition

Value of the general accounts corresponding to the specified product, guarantee type and subset of the guarantee.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 80

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6484115&loc=d3e19393-158473

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Period Type:	instant

- Details

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- Details

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- Details

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Contingencies (Detail) - USD ($) $ in Millions	Oct. 31, 2015	Sep. 30, 2015
Loss Contingencies [Line Items]
Value of the service guarantee		$ 1.0
Unfavorable regulatory action \| Pending litigation \| Lifelock vs. Ebarle, Stamm and Litton
Loss Contingencies [Line Items]
Accrued liability for legal settlement		113.0
Unfavorable regulatory action \| Pending litigation \| Lifelock vs. Etan Goldman
Loss Contingencies [Line Items]
Accrued liability for legal settlement		$ 2.5
Subsequent Event \| Unfavorable regulatory action \| Pending litigation \| Lifelock vs. FTC
Loss Contingencies [Line Items]
Accrued liability for legal settlement	$ 3.0
Loss minimum in unresolved settlement	$ 3.0