XML 53 R42.htm IDEA: XBRL DOCUMENT
v3.21.1

Convertible Senior Notes - Capped Call (Details) - Senior Notes - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended |
--- | --- | ---
Aug. 31, 2020 | Apr. 30, 2019 | Apr. 30, 2018 | Mar. 31, 2021
0% Convertible Senior Notes Due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of convertible senior notes, net of issuance costs | $ 984,096 |  |  |
Conversion price |  |  |  | $ 107.55
0.125% Convertible Senior Notes Due 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of convertible senior notes, net of issuance costs |  | $ 780,180 |  |
Conversion price |  |  |  | 51.56
0.25% Convertible Senior Notes Due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of convertible senior notes, net of issuance costs |  |  | $ 335,618 |
Conversion price |  |  |  | $ 26.95
Capped Call | 0% Convertible Senior Notes Due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of convertible senior notes, net of issuance costs | $ 103,400 |  |  |
Debt instrument, convertible (in shares) |  |  |  | 9,297,800
Conversion price |  |  |  | $ 156.44
Capped Call | 0.125% Convertible Senior Notes Due 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of convertible senior notes, net of issuance costs |  | $ 97,200 |  |
Debt instrument, convertible (in shares) |  |  |  | 13,576,823
Conversion price |  |  |  | $ 79.32
Capped Call | 0.25% Convertible Senior Notes Due 2023 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of convertible senior notes, net of issuance costs |  |  | $ 39,200 |
Debt instrument, convertible (in shares) |  |  |  | 4,201,633
Conversion price |  |  |  | $ 40.68

X
- Definition Debt Instrument, Convertible, Shares + References No definition available. + Details
Name: | chgg_DebtInstrumentConvertibleShares
Namespace Prefix: | chgg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031898-161870 + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromDebtNetOfIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=chgg_A0ConvertibleSeniorNotesDue2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=chgg_A0.125PercentConvertibleSeniorNotesDue2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=chgg_A0.25PercentConvertibleSeniorNotesDue2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | chgg_DebtInstrumentTransactionAxis=chgg_CappedCallMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |