XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.20.2

Convertible Senior Notes - Net Carrying Amount (Details) - Senior Notes - USD ($) | Sep. 30, 2020 | Aug. 31, 2020 | Dec. 31, 2019 | Apr. 30, 2019 | Mar. 31, 2019 | Apr. 30, 2018
--- | --- | --- | --- | --- | --- | ---
0% Convertible Senior Notes Due 2026 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal | $ 1,000,000,000 | $ 1,000,000,000.0 |  |  |  |
Unamortized debt discount | (236,809,000) |  |  |  |  |
Unamortized issuance costs | (11,842,000) | (15,900,000) |  |  |  |
Debt discount for conversion option | 241,300,000 |  |  |  |  |
Issuance costs | (3,838,000) |  |  |  |  |
Net carrying amount (equity) | 237,462,000 | 241,300,000 |  |  |  |
0.125% Convertible Senior Notes Due 2025 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal | 800,000,000 |  | $ 800,000,000 | $ 100,000,000 | $ 700,000,000 |
Unamortized debt discount | (158,077,000) |  | (184,698,000) |  |  |
Unamortized issuance costs | (10,862,000) |  | (12,691,000) | (19,800,000) |  |
Debt discount for conversion option | 212,000,000 |  | 212,000,000 |  |  |
Issuance costs | (5,253,000) |  | (5,253,000) |  |  |
Net carrying amount (equity) | 206,747,000 |  | 206,747,000 | 212,000,000.0 |  |
0.25% Convertible Senior Notes Due 2023 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal | 173,018,000 |  | 345,000,000 |  |  | $ 345,000,000
Unamortized debt discount | (16,484,000) |  | (42,280,000) |  |  |
Unamortized issuance costs | (1,960,000) |  | (5,028,000) |  |  | (9,400,000)
Net carrying amount (liability) |  | 156,100,000 |  |  |  |
Debt discount for conversion option | 32,193,000 |  | 64,193,000 |  |  |
Issuance costs | (877,000) |  | (1,749,000) |  |  |
Net carrying amount (equity) | 31,316,000 | 345,600,000 | 62,444,000 |  |  | 64,200,000
Carrying Amount | 0% Convertible Senior Notes Due 2026 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net carrying amount (liability) |  | $ 758,700,000 |  |  |  |
Carrying Amount | 0.125% Convertible Senior Notes Due 2025 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net carrying amount (liability) |  |  |  | $ 588,000,000.0 |  |
Carrying Amount | 0.25% Convertible Senior Notes Due 2023 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net carrying amount (liability) |  |  |  |  |  | $ 280,800,000
Carrying Amount | Fair Value, Measurements, Nonrecurring |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net carrying amount (liability) | 1,536,984,000 |  | 900,303,000 |  |  |
Carrying Amount | Fair Value, Measurements, Nonrecurring | 0% Convertible Senior Notes Due 2026 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net carrying amount (liability) | 751,349,000 |  | 0 |  |  |
Carrying Amount | Fair Value, Measurements, Nonrecurring | 0.125% Convertible Senior Notes Due 2025 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net carrying amount (liability) | 631,061,000 |  | 602,611,000 |  |  |
Carrying Amount | Fair Value, Measurements, Nonrecurring | 0.25% Convertible Senior Notes Due 2023 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Net carrying amount (liability) | $ 154,574,000 |  | $ 297,692,000 |  |  |

X
- Definition Debt Instrument, Convertible, Discount For Conversion Option + References No definition available. + Details
Name: | chgg_DebtInstrumentConvertibleDiscountForConversionOption
Namespace Prefix: | chgg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Convertible, Issuance Costs + References No definition available. + Details
Name: | chgg_DebtInstrumentConvertibleIssuanceCosts
Namespace Prefix: | chgg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 + Details
Name: | us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 Amount, after accumulated amortization, of debt discount (premium). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28567-108399 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
Name: | us-gaap_LongTermDebtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_A0ConvertibleSeniorNotesDue2026Member
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: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |