XML 107 R92.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Stock-Based Compensation - 2016 Stock Option Plan (Details) - shares |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 01, 2023 | Jan. 01, 2022 | Dec. 31, 2023 | Jun. 22, 2016
Stock Based Compensation |  |  |  |
Vesting period |  |  | 4 years |
Stock Options |  |  |  |
Stock Based Compensation |  |  |  |
Expiration term |  |  | 10 years |
Stock-based awards available for grant under 2016 Plan |  |  |  |
Stock Based Compensation |  |  |  |
Maximum automatic annual increase as a percentage of outstanding common shares |  |  | 5.00% |
Increase in shares available for grant (in shares) | 9,298,785 | 9,023,405 |  |
Stock-based awards available for grant under 2016 Plan | Stock Options |  |  |  |
Stock Based Compensation |  |  |  |
Minimum grant price as a percentage of fair market value per share of the underlying common stock on the date of grant (as a percent) |  |  | 100.00% |
Stock-based awards available for grant under 2016 Plan | Common Stock Class A |  |  |  |
Stock Based Compensation |  |  |  |
Shares reserved for issuance (in shares) |  |  |  | 11,500,000

X
- Definition For a share-based compensation arrangement, the minimum grant price per share as a percentage of the underlying value of common stock on the date of grant. + References No definition available. + Details
Name: | twlo_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantPriceAsPercentageOfFairMarketValueOfCommonStockMinimum
Namespace Prefix: | twlo_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum automatic annual increase in the number of shares (or other type of equity) approved for awards under the equity-based compensation plan, as a percentage of the outstanding shares of the entity's common stock at the end of the prior fiscal year. + References No definition available. + Details
Name: | twlo_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumAnnualIncreaseInAuthorizationPercentageOfOutstandingShares
Namespace Prefix: | twlo_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of additional shares authorized for issuance under share-based payment arrangement. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=twlo_EmployeeAndNonemployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=twlo_StockOptionAndIncentivePlan2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |