$TWLO
Twilio Inc Stock $twlo

$twlo Overview Financials Valuation SEC Filings Company Website

2021 Q3 Form 10-Q Financial Statement

#000144766921000266 Filed on October 28, 2021

Income Statement

Concept	2021 Q3	2020 Q4	2020 Q3
Revenue	$740.2M	$548.1M	$448.0M
YoY Change	65.23%	65.49%	51.82%
Cost Of Revenue	$375.6M	$266.0M	$217.1M
YoY Change	72.99%	69.97%	58.57%
Gross Profit	$364.6M	$282.1M	$230.9M
YoY Change	57.93%	61.48%	45.97%
Gross Profit Margin	49.26%	51.47%	51.54%
Selling, General & Admin	$387.1M	$286.7M	$206.5M
YoY Change	87.45%	90.25%	39.2%
% of Gross Profit	106.16%	101.63%	89.44%
Research & Development	$209.9M	$158.9M	$136.7M
YoY Change	53.59%	44.19%	30.79%
% of Gross Profit	57.56%	56.33%	59.19%
Depreciation & Amortization	$14.55M	$51.59M	$12.84M
YoY Change	13.26%	65.72%	32.4%
% of Gross Profit	3.99%	18.29%	5.56%
Operating Expenses	$597.0M	$460.8M	$343.1M
YoY Change	73.97%	71.62%	35.72%
Operating Profit	-$232.3M	-$178.7M	-$112.3M
YoY Change	106.95%	90.51%	18.6%
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net	-$6.613M	-$9.400M	-$3.996M
YoY Change	65.49%	-300.0%	-191.3%
Pretax Income	-$239.0M	-$194.7M	-$116.3M
YoY Change	105.53%	118.52%	28.77%
Income Tax	-$14.80M	-$15.40M	$600.0K
% Of Pretax Income
Net Earnings	-$224.1M	-$179.4M	-$116.9M
YoY Change	91.69%	98.89%	33.26%
Net Earnings / Revenue	-30.28%	-32.73%	-26.1%
Basic Earnings Per Share	-$1.26		-$0.79
Diluted Earnings Per Share	-$1.26	-$1.133M	-$0.79
COMMON SHARES
Basic Shares Outstanding	177.2M shares		147.5M shares
Diluted Shares Outstanding	177.2M shares		147.5M shares

Balance Sheet

Concept	2021 Q3	2020 Q4	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$5.394B	$3.040B	$3.299B
YoY Change	63.53%	64.07%	75.3%
Cash & Equivalents	$1.497B	$933.9M	$1.127B
Short-Term Investments	$3.897B	$2.106B	$2.172B
Other Short-Term Assets	$165.8M	$81.00M	$66.00M
YoY Change	151.15%	47.27%	20.0%
Inventory
Prepaid Expenses
Receivables	$345.8M	$251.2M	$203.8M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$5.906B	$3.372B	$3.569B
YoY Change	65.47%	63.6%	72.55%
LONG-TERM ASSETS
Property, Plant & Equipment	$485.8M	$442.0M	$366.0M
YoY Change	32.74%	212.91%	208.91%
Goodwill	$5.263B	$4.595B	$2.292B
YoY Change	129.67%	100.08%	0.36%
Intangibles	$1.103B	$966.6M	$404.4M
YoY Change	172.64%	109.74%	-13.08%
Long-Term Investments
YoY Change
Other Assets	$219.6M	$111.3M	$92.64M
YoY Change	137.02%	231.64%	249.88%
Total Long-Term Assets	$7.071B	$6.115B	$3.155B
YoY Change	124.14%	97.95%	3.71%
TOTAL ASSETS
Total Short-Term Assets	$5.906B	$3.372B	$3.569B
Total Long-Term Assets	$7.071B	$6.115B	$3.155B
Total Assets	$12.98B	$9.487B	$6.724B
YoY Change	93.0%	84.2%	31.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$76.29M	$60.04M	$39.88M
YoY Change	91.31%	53.56%	53.69%
Accrued Expenses	$409.3M	$292.0M	$244.0M
YoY Change	67.74%	66.86%	54.43%
Deferred Revenue	$121.3M	$87.03M	$33.92M
YoY Change	257.76%	230.14%	30.37%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$10.15M	$9.000M	$9.000M
YoY Change	12.78%	28.57%	28.57%
Total Short-Term Liabilities	$617.1M	$448.3M	$326.3M
YoY Change	89.08%	81.34%	50.93%
LONG-TERM LIABILITIES
Long-Term Debt	$1.006B	$320.0M	$449.0M
YoY Change	124.01%	-31.48%	-2.39%
Other Long-Term Liabilities	$49.19M	$36.63M	$19.96M
YoY Change	146.48%	106.42%	39.16%
Total Long-Term Liabilities	$49.19M	$36.63M	$19.96M
YoY Change	146.48%	106.42%	39.16%
TOTAL LIABILITIES
Total Short-Term Liabilities	$617.1M	$448.3M	$326.3M
Total Long-Term Liabilities	$49.19M	$36.63M	$19.96M
Total Liabilities	$1.895B	$1.035B	$961.4M
YoY Change	97.11%	18.79%	16.44%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.828B	-$1.170B	-$990.4M
YoY Change	84.59%	72.33%	68.3%
Common Stock	$12.91B	$9.613B	$6.742B
YoY Change	91.49%	94.09%	38.49%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$11.08B	$8.453B	$5.762B
YoY Change
Total Liabilities & Shareholders Equity	$12.98B	$9.487B	$6.724B
YoY Change	93.0%	84.2%	31.57%

Cashflow Statement

Concept	2021 Q3	2020 Q4	2020 Q3
OPERATING ACTIVITIES
Net Income	-$224.1M	-$179.4M	-$116.9M
YoY Change	91.69%	98.89%	33.26%
Depreciation, Depletion And Amortization	$14.55M	$51.59M	$12.84M
YoY Change	13.26%	65.72%	32.4%
Cash From Operating Activities	-$46.17M	$14.90M	$3.840M
YoY Change	-1302.37%	23.86%	-75.76%
INVESTING ACTIVITIES
Capital Expenditures	-$35.52M	-$13.76M	-$14.92M
YoY Change	138.08%	-56.3%	-14.25%
Acquisitions
YoY Change
Other Investing Activities	-$234.7M	-$211.1M	-$750.8M
YoY Change	-68.74%	194.93%	269.03%
Cash From Investing Activities	-$270.2M	-$224.9M	-$765.7M
YoY Change	-64.71%	118.19%	246.71%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	14.44M	16.75M	1.413B
YoY Change	-98.98%	18.63%	-129757.8%
NET CHANGE
Cash From Operating Activities	-46.17M	14.90M	3.840M
Cash From Investing Activities	-270.2M	-224.9M	-765.7M
Cash From Financing Activities	14.44M	16.75M	1.413B
Net Change In Cash	-302.0M	-193.3M	651.4M
YoY Change	-146.36%	151.22%	-416.06%
FREE CASH FLOW
Cash From Operating Activities	-$46.17M	$14.90M	$3.840M
Capital Expenditures	-$35.52M	-$13.76M	-$14.92M
Free Cash Flow	-$10.65M	$28.66M	$18.76M
YoY Change	-156.76%	-34.15%	-43.56%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001447669
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	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
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CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-37806
	dei	Entity Registrant Name EntityRegistrantName	TWILIO INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	26-2574840
	dei	Entity Address Address Line1 EntityAddressAddressLine1	101 Spear Street
	dei	Entity Address Address Line2 EntityAddressAddressLine2	First Floor
	dei	Entity Address City Or Town EntityAddressCityOrTown	San Francisco
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	94105
	dei	City Area Code CityAreaCode	415
	dei	Local Phone Number LocalPhoneNumber	390-2337
	dei	Security12b Title Security12bTitle	Class A Common Stock, par value $0.001 per share
	dei	Trading Symbol TradingSymbol	TWLO
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2021Q3	us-gaap	Goodwill Goodwill	5263051000	USD
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CY2021Q3	us-gaap	Assets Assets	12976847000	USD
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CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	60042000	USD
CY2021Q3	twlo	Accrued Liabilities And Other Liabilities Current AccruedLiabilitiesAndOtherLiabilitiesCurrent	368683000	USD
CY2020Q4	twlo	Accrued Liabilities And Other Liabilities Current AccruedLiabilitiesAndOtherLiabilitiesCurrent	252895000	USD
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CY2021Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	20254000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	17856000	USD
CY2021Q3	us-gaap	Long Term Debt LongTermDebt	985547000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	302068000	USD
CY2021Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	49191000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	36633000	USD
CY2021Q3	us-gaap	Liabilities Liabilities	1895098000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	1034768000	USD
CY2021Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2021Q3	us-gaap	Common Stock Value CommonStockValue	178000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	164000	USD
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CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	9046000	USD
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CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	11081749000	USD
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	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1999095000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1213686000	USD
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	us-gaap	Operating Expenses OperatingExpenses	1626124000	USD
	us-gaap	Operating Expenses OperatingExpenses	941150000	USD
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CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-112270000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-631958000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-307610000	USD
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	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-39219000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2099000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-238958000	USD
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	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-671177000	USD
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	us-gaap	Net Income Loss NetIncomeLoss	-658504000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-311628000	USD
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CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147501075	shares
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	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-3069000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	0	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1112000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3021000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-9451000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	5499000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-225221000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-119935000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-667955000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-306129000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	8452665000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	-206542000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	11564000	USD
CY2021Q1	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2774000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	80049000	USD
CY2021Q1	twlo	Stock Issued During Period Value Donor Advised Fund StockIssuedDuringPeriodValueDonorAdvisedFund	9405000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1766400000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	727000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-4176000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-210000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	141542000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	10247196000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	-227853000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	20351000	USD
CY2021Q2	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1882000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	255594000	USD
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	225233000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	23699000	USD
CY2021Q2	twlo	Stock Issued During Period Value Donor Advised Fund StockIssuedDuringPeriodValueDonorAdvisedFund	6789000	USD
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	50000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-979000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-66000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-2908000	USD
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	148988000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	10694112000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	10694112000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	-224109000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	15993000	USD
CY2021Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1896000	USD
CY2021Q3	twlo	Stock Issued During Period Value Donor Advised Fund StockIssuedDuringPeriodValueDonorAdvisedFund	8389000	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	-90000	USD
CY2021Q3	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	1116390	shares
CY2021Q3	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	419037000	USD
CY2021Q3	twlo	Equity Awards Assumed During Period Value EquityAwardsAssumedDuringPeriodValue	1511000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-982000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	31000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-161000	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	169734000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	11081749000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4279411000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-94791000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	8231000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1000	USD
CY2020Q1	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1674000	USD
CY2020Q1	twlo	Stock Issued During Period Value Donor Advised Fund StockIssuedDuringPeriodValueDonorAdvisedFund	2701000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-9375000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	72021000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	4256525000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-99923000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	45232000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1000	USD
CY2020Q2	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1144000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	16473000	USD
CY2020Q2	twlo	Stock Issued During Period Value Donor Advised Fund StockIssuedDuringPeriodValueDonorAdvisedFund	3972000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	17895000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	82559000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	4321590000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-116914000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1408750000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	541000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	9221000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1000	USD
CY2020Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1409000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	46155000	USD
CY2020Q3	twlo	Stock Issued During Period Value Donor Advised Fund StockIssuedDuringPeriodValueDonorAdvisedFund	5757000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-3021000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	92679000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	5762268000	USD
	us-gaap	Profit Loss ProfitLoss	-658504000	USD
	us-gaap	Profit Loss ProfitLoss	-311628000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	189669000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	98070000	USD
	twlo	Leases Right Of Use Asset Amortization LeasesRightOfUseAssetAmortization	36249000	USD
	twlo	Leases Right Of Use Asset Amortization LeasesRightOfUseAssetAmortization	27240000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-24880000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2909000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5457000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	18432000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	445366000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	237822000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	20798000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	8556000	USD
	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	15569000	USD
	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	716000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	11371000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	8417000	USD
	twlo	Common Stock Donor Advised Fund Value CommonStockDonorAdvisedFundValue	24583000	USD
	twlo	Common Stock Donor Advised Fund Value CommonStockDonorAdvisedFundValue	12430000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-28965000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3155000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	8626000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-142000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	81186000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	58340000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	59929000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	8733000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	66501000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	64777000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-8665000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	86000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	84730000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	59594000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	27004000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	7799000	USD
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-36274000	USD
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-25161000	USD
	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-1019000	USD
	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	2740000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-19949000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	17753000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	490880000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2786000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	3225799000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1465158000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1334444000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	892365000	USD
	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	35926000	USD
	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	26114000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	33575000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	19252000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2451736000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-620945000	USD
	twlo	Proceeds From A Public Equity Offering ProceedsFromAPublicEquityOffering	1766400000	USD
	twlo	Proceeds From A Public Equity Offering ProceedsFromAPublicEquityOffering	1408750000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	464000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	433000	USD
	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	987500000	USD
	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2751000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	228412000	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	4852000	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	6688000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	71607000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	79157000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6552000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4227000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3039300000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1476559000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-157000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	0	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	567458000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	873367000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	933885000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	253735000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1501343000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1127102000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4439000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1962000	USD
	twlo	Cash Paid On Finance Leases CashPaidOnFinanceLeases	19545000	USD
	twlo	Cash Paid On Finance Leases CashPaidOnFinanceLeases	1290000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	6758000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1261000	USD
	twlo	Purchases Of Property Equipment Through Financing Lease PurchasesOfPropertyEquipmentThroughFinancingLease	11876000	USD
	twlo	Purchases Of Property Equipment Through Financing Lease PurchasesOfPropertyEquipmentThroughFinancingLease	15047000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	420548000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	0	USD
	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	1704969000	USD
	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	171840000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	14938000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	10711000	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1497498000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1127102000	USD
CY2021Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	2733000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2021Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1112000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	0	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1501343000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1127102000	USD
	us-gaap	Nature Of Operations NatureOfOperations	Organization and Description of Business<div style="margin-top:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Twilio Inc. (the “Company”) was incorporated in the state of Delaware on March 13, 2008. The Company is the leading cloud communications platform and enables developers to build, scale and operate real-time customer engagement within their software applications via simple-to-use Application Programming Interfaces (“API”). The power, flexibility and reliability offered by the Company’s software building blocks empower entities of virtually every shape and size to build world-class engagement into their customer experience.</span></div><div style="margin-top:12pt;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company’s headquarters are located in San Francisco, California, and the Company has subsidiaries in Australia, Bermuda, Brazil, Canada, Colombia, Czech Republic, Estonia, France, Germany, Hong Kong, India, Ireland, Japan, Mexico, the Netherlands, Poland, Serbia, Singapore, Spain, Sweden, the United Kingdom and the United States.</span></div>
	us-gaap	Use Of Estimates UseOfEstimates	Use of EstimatesThe preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. These estimates are used for, but not limited to, allowances for doubtful accounts and customer credit reserves; recoverability of long-lived and intangible assets; capitalization and useful life of the Company’s capitalized internal-use software development costs; fair value of acquired intangible assets and goodwill; accruals and contingencies. Estimates are based on historical experience and on various assumptions that the Company believes are reasonable under current circumstances. However, future events are subject to change and best estimates and judgments may require further adjustments; therefore, actual results could differ materially from those estimates. Management periodically evaluates such estimates and they are adjusted prospectively based upon such periodic evaluation.
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	Concentration of Credit RiskFinancial instruments that potentially expose the Company to a concentration of credit risk consist primarily of cash, cash equivalents, marketable securities and accounts receivable. The Company maintains cash, cash equivalents and marketable securities with financial institutions that management believes are financially sound and have minimal credit risk exposure although the balances will exceed insured limits.The Company sells its services to a wide variety of customers. If the financial condition or results of operations of any significant customer deteriorates substantially, the Company’s results of operations could be adversely affected. To reduce credit risk, management performs credit evaluations of the financial condition of significant customers. The Company does not require collateral from its credit customers and maintains reserves for estimated credit losses on customer accounts when considered necessary. Actual credit losses may differ from the Company’s estimates.
CY2021Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	1161477000	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	1161477000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3894518000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	4218000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1982000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3896754000	USD
CY2021Q3	twlo	Financial Assets Amortized Cost Or Carrying Value FinancialAssetsAmortizedCostOrCarryingValue	5055995000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	4218000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	1982000	USD
CY2021Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	5058231000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	23700000	USD
CY2021Q3	twlo	Financial Liabilities Amortized Cost Or Carrying Value FinancialLiabilitiesAmortizedCostOrCarryingValue	0	USD
CY2021Q3	twlo	Financial Liability Accumulated Gross Unrealized Gain Before Tax FinancialLiabilityAccumulatedGrossUnrealizedGainBeforeTax	0	USD
CY2021Q3	twlo	Financial Liability Accumulated Gross Unrealized Loss Before Tax FinancialLiabilityAccumulatedGrossUnrealizedLossBeforeTax	3069000	USD
CY2021Q3	us-gaap	Financial Liabilities Fair Value Disclosure FinancialLiabilitiesFairValueDisclosure	3069000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	658749000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	658749000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	2097504000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	8538000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	136000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2105906000	USD
CY2020Q4	twlo	Financial Assets Amortized Cost Or Carrying Value FinancialAssetsAmortizedCostOrCarryingValue	2756253000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	8538000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	136000	USD
CY2020Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	2764655000	USD
CY2021Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	16200000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	39500000	USD
CY2020Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	7100000	USD
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	9300000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	1119954000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	1121537000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	1126091000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	1128927000	USD
CY2021Q3	twlo	Available For Sale Securities Debt Maturities Rolling Year Two Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoAmortizedCostBasis	2774564000	USD
CY2021Q3	twlo	Available For Sale Securities Debt Maturities Rolling Year Two Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoFairValue	2775217000	USD
CY2020Q4	twlo	Available For Sale Securities Debt Maturities Rolling Year Two Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoAmortizedCostBasis	971413000	USD
CY2020Q4	twlo	Available For Sale Securities Debt Maturities Rolling Year Two Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoFairValue	976979000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3894518000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3896754000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	2097504000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2105906000	USD
CY2021Q3	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	66300000	USD
CY2021Q3	us-gaap	Depreciation Depreciation	14546000	USD
CY2021Q3	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020Q3	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	3100000	USD
CY2021Q3	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	412466000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	313323000	USD
CY2021Q3	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	175225000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	130084000	USD
CY2021Q3	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	237241000	USD
CY2020Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	183239000	USD
CY2020Q3	us-gaap	Depreciation Depreciation	12843000	USD
	us-gaap	Depreciation Depreciation	43198000	USD
	us-gaap	Depreciation Depreciation	36674000	USD
CY2021Q3	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	17999000	USD
CY2020Q3	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	12172000	USD
	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	49527000	USD
	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	36738000	USD
CY2021Q3	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	5198000	USD
CY2020Q3	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	3696000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	14938000	USD
	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	10711000	USD
CY2021Q3	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	4419000	USD
CY2020Q3	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	4380000	USD
	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	13270000	USD
	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	13389000	USD
CY2021Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	802000	USD
CY2020Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1195000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3340000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	3698000	USD
CY2021Q3	us-gaap	Variable Lease Cost VariableLeaseCost	2389000	USD
CY2020Q3	us-gaap	Variable Lease Cost VariableLeaseCost	2066000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	7322000	USD
	twlo	Lessee Operating Lease Number Of Contracts LesseeOperatingLeaseNumberOfContracts	32	property
CY2021Q3	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2021Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	16141000	USD
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	12127000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	45519000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	35048000	USD
CY2021Q3	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2905000	USD
CY2020Q3	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2384000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	8389000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	6118000	USD
CY2021Q3	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	282000	USD
CY2020Q3	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	212000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	805000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	604000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	5246000	USD
CY2021Q3	twlo	Lease Right Of Use Asset LeaseRightOfUseAsset	277609000	USD
CY2020Q4	twlo	Lease Right Of Use Asset LeaseRightOfUseAsset	284381000	USD
CY2021Q3	us-gaap	Lease Cost LeaseCost	22519000	USD
CY2020Q3	us-gaap	Lease Cost LeaseCost	17984000	USD
	us-gaap	Lease Cost LeaseCost	65375000	USD
	us-gaap	Lease Cost LeaseCost	50714000	USD
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	248582000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	258610000	USD
CY2021Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	29027000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	25771000	USD
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	50760000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	48338000	USD
CY2021Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	10150000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	9062000	USD
CY2021Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	223033000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	10681000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	229905000	USD
CY2021Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	20254000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	17856000	USD
CY2021Q3	twlo	Lease Liability LeaseLiability	304197000	USD
CY2020Q4	twlo	Lease Liability LeaseLiability	305161000	USD
CY2021Q3	twlo	Lessee Operating Lease Accumulated Amortization LesseeOperatingLeaseAccumulatedAmortization	88900000	USD
CY2020Q4	twlo	Lessee Operating Lease Accumulated Amortization LesseeOperatingLeaseAccumulatedAmortization	57100000	USD
CY2021Q3	twlo	Lessee Finance Lease Accumulated Depreciation LesseeFinanceLeaseAccumulatedDepreciation	23400000	USD
CY2020Q4	twlo	Lessee Finance Lease Accumulated Depreciation LesseeFinanceLeaseAccumulatedDepreciation	15000000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	44551000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	34124000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	788000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	604000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	8343000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	5721000	USD
CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y8M12D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y7M6D
CY2021Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y1M6D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y4M24D
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.045
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.053
CY2021Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.035
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.041
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	14742000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	2920000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	63245000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	55476000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	9934000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	50857000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	6693000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	37706000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1394000	USD
CY2021Q3	twlo	Lessee Operating Lease Liability Payments Due After Year Four LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour	89223000	USD
CY2021Q3	twlo	Finance Lease Liability Payments Due After Year Four FinanceLeaseLiabilityPaymentsDueAfterYearFour	518000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	311249000	USD
CY2021Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	32140000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	37456000	USD
CY2021Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1736000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	273793000	USD
CY2021Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	30404000	USD
CY2021Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	50760000	USD
CY2021Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	10150000	USD
CY2021Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	223033000	USD
CY2021Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	20254000	USD
CY2021Q3	twlo	Lessee Operating Lease Lease Not Yet Commenced Liability LesseeOperatingLeaseLeaseNotYetCommencedLiability	11000000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Lease Not Yet Commenced Term Of Contract1 LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1	P6Y2M12D
CY2021Q3	twlo	Lessee Finance Lease Lease Not Yet Commenced Liability LesseeFinanceLeaseLeaseNotYetCommencedLiability	10500000	USD
CY2021Q3	us-gaap	Lessee Finance Lease Lease Not Yet Commenced Term Of Contract1 LesseeFinanceLeaseLeaseNotYetCommencedTermOfContract1	P4Y
CY2020Q4	us-gaap	Goodwill Goodwill	4595394000	USD
	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	667657000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	5263051000	USD
CY2021Q3	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	36155000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1429506000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	332122000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1097384000	USD
CY2021Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	1434721000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	332122000	USD
CY2021Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1102599000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1147219000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	185861000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	961358000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	1152434000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	185861000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	966573000	USD
CY2021Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	55700000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	146300000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	20400000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	61300000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	52554000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	204832000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	201522000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	195948000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	192374000	USD
CY2021Q3	twlo	Finite Lived Intangible Asset Expected Amortization After Year Four FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	250154000	USD
CY2021Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1097384000	USD
CY2021Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	66094000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	54683000	USD
CY2020Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	25341000	USD
CY2021Q3	twlo	Accrued Cost Of Revenue Current AccruedCostOfRevenueCurrent	115996000	USD
CY2020Q4	twlo	Accrued Cost Of Revenue Current AccruedCostOfRevenueCurrent	80620000	USD
CY2021Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	63660000	USD
CY2020Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	48390000	USD
CY2021Q3	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	19354000	USD
CY2020Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	6272000	USD
CY2021Q3	us-gaap	Deferred Rent Credit Current DeferredRentCreditCurrent	10150000	USD
CY2020Q4	us-gaap	Deferred Rent Credit Current DeferredRentCreditCurrent	9062000	USD
CY2021Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	57274000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	28527000	USD
CY2021Q3	twlo	Accrued Liabilities And Other Liabilities Current AccruedLiabilitiesAndOtherLiabilitiesCurrent	368683000	USD
CY2020Q4	twlo	Accrued Liabilities And Other Liabilities Current AccruedLiabilitiesAndOtherLiabilitiesCurrent	252895000	USD
CY2021Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	9809000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	21882000	USD
CY2021Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	15413000	USD
CY2021Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	20446000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	13684000	USD
CY2021Q3	twlo	Business Combination Consideration Holdback Non Current BusinessCombinationConsiderationHoldbackNonCurrent	8502000	USD
CY2020Q4	twlo	Business Combination Consideration Holdback Non Current BusinessCombinationConsiderationHoldbackNonCurrent	8800000	USD
CY2021Q3	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	20243000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	14149000	USD
CY2021Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	49191000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	36633000	USD
CY2020Q3	twlo	Provision For Doubtful Accounts And Other ProvisionForDoubtfulAccountsAndOther	1312000	USD
CY2021Q3	us-gaap	Long Term Debt LongTermDebt	985547000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	302068000	USD
CY2020Q2	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10248000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	12046000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6287000	USD
CY2021Q3	twlo	Provision For Doubtful Accounts And Other ProvisionForDoubtfulAccountsAndOther	4122000	USD
	twlo	Provision For Doubtful Accounts And Other ProvisionForDoubtfulAccountsAndOther	13490000	USD
	twlo	Provision For Doubtful Accounts And Other ProvisionForDoubtfulAccountsAndOther	8472000	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	2703000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	832000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	8704000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	4031000	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16832000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10728000	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16832000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10728000	USD
CY2021Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	740176000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	447969000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1999095000	USD
CY2021Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q3	us-gaap	Unrecorded Unconditional Purchase Obligation Term UnrecordedUnconditionalPurchaseObligationTerm	P4Y
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1213686000	USD
	us-gaap	Unrecorded Unconditional Purchase Obligation Term UnrecordedUnconditionalPurchaseObligationTerm	P4Y
CY2021Q3	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	9000000	USD
CY2020Q3	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	447000000	USD
CY2021Q3	twlo	Taxes Payable Jurisdictional Estimate TaxesPayableJurisdictionalEstimate	38800000	USD
CY2021Q3	twlo	Taxes Payable Jurisdictional Estimate TaxesPayableJurisdictionalEstimate	38800000	USD
CY2021Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	11500000	USD
CY2021Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2021Q3	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	43692856	shares
CY2020Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	45310099	shares
	twlo	Share Based Compensation Arrangement By Share Based Payment Award Stock Plan Offering Period ShareBasedCompensationArrangementByShareBasedPaymentAwardStockPlanOfferingPeriod	P6M
CY2021Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	1495055000	USD
CY2021Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	164043000	USD
CY2020Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	89410000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	445366000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	237822000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-224109000	USD
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-224109000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-116914000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-116914000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-658504000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-658504000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-311628000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-311628000	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	177231285	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	177231285	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	147501075	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	147501075	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	172605371	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	172605371	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	142832021	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	142832021	shares
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.26
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.26
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.79
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.79
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.82
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.82
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.18
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.18
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	12145674	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	18819665	shares
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-14800000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12700000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	600000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1900000	USD

Files In Submission

Name	View Source	Status
0001447669-21-000266-index-headers.html	Edgar Link	pending
0001447669-21-000266-index.html	Edgar Link	pending
0001447669-21-000266.txt	Edgar Link	pending
0001447669-21-000266-xbrl.zip	Edgar Link	pending
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Financial_Report.xlsx	Edgar Link	pending
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twlo-20210930_pre.xml	Edgar Link	unprocessable

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$TWLO
Twilio Inc Stock $twlo

2021 Q3 Form 10-Q Financial Statement

#000144766921000266 Filed on October 28, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TWLO Twilio Inc Stock $twlo

2021 Q3 Form 10-Q Financial Statement

#000144766921000266 Filed on October 28, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TWLO
Twilio Inc Stock $twlo