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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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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Balance Type:	debit
Period Type:	duration

- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12021-110248

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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- Details

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- Details

Name:	srt_LitigationCaseAxis=chgg_IngramHostingHoldingsLLCvs.CheggMember
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Data Type:	na
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- Details

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Commitments and Contingencies (Details) $ in Thousands	Aug. 12, 2020 numberOfPlaintiffs	Jul. 01, 2020 numberOfPlaintiffs	May 12, 2020 USD ($) numberOfPlaintiffs	Mar. 03, 2020 USD ($)	Jul. 21, 2020 USD ($)
2018 Data Incident, Arbitration Demands
Loss Contingencies [Line Items]
Number of arbitration demands filed \| numberOfPlaintiffs	577
2018 Data Incident, Arbitration Demands \| Pending Litigation
Loss Contingencies [Line Items]
Number of arbitration demands filed \| numberOfPlaintiffs		1,007	15,107
Damages sought, value			$ 25
Ingram Hosting Holdings LLC vs. Chegg \| Pending Litigation
Loss Contingencies [Line Items]
Damages sought, value				$ 17,000
VitalSource Technologies LLC (VST) vs. Chegg \| Pending Litigation
Loss Contingencies [Line Items]
Estimate of possible loss					$ 75