$TWLO
Twilio Inc Stock $twlo

$twlo Overview Financials Valuation SEC Filings Company Website

2019 Form 10-K Financial Statement

#000144766920000045 Filed on March 02, 2020

Income Statement

Concept	2019	2018 Q4	2018
Revenue	$1.134B	$204.3M	$650.1M
YoY Change	74.52%	77.34%	62.92%
Cost Of Revenue	$525.6M	$96.30M	$300.8M
YoY Change	74.69%	75.09%	64.49%
Gross Profit	$608.9M	$108.0M	$349.2M
YoY Change	74.36%	79.4%	61.59%
Gross Profit Margin	53.67%	52.86%	53.72%
Selling, General & Admin	$587.3M	$92.60M	$293.1M
YoY Change	100.39%	99.57%	81.53%
% of Gross Profit	96.46%	85.74%	83.93%
Research & Development	$391.4M	$51.60M	$171.4M
YoY Change	128.38%	57.32%	41.92%
% of Gross Profit	64.27%	47.78%	49.07%
Depreciation & Amortization	$110.4M	$7.850M	$26.10M
YoY Change	323.18%	46.73%	39.07%
% of Gross Profit	18.14%	7.27%	7.47%
Operating Expenses	$978.7M	$152.0M	$464.5M
YoY Change	110.72%	88.82%	64.59%
Operating Profit	-$369.8M	-$44.00M	-$115.2M
YoY Change	220.9%	116.75%	74.4%
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net	$7.569M	-$2.800M	-$5.923M
YoY Change	-227.79%	-354.55%	-292.87%
Pretax Income	-$362.2M	-$46.70M	-$121.2M
YoY Change	198.96%	144.5%	92.31%
Income Tax	-$55.15M	$400.0K	$791.0K
% Of Pretax Income
Net Earnings	-$307.1M	-$47.20M	-$121.9M
YoY Change	151.8%	149.74%	91.42%
Net Earnings / Revenue	-27.07%	-23.1%	-18.76%
Basic Earnings Per Share	-$2.36
Diluted Earnings Per Share	-$2.36	-$474.8K	-$1.255M
COMMON SHARES
Basic Shares Outstanding	130.1M shares
Diluted Shares Outstanding	130.1M shares

Balance Sheet

Concept	2019	2018 Q4	2018
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.853B	$748.3M	$748.3M
YoY Change	147.59%	157.16%	157.24%
Cash & Equivalents	$253.7M	$487.2M	$487.2M
Short-Term Investments	$1.599B	$261.1M	$261.1M
Other Short-Term Assets	$54.60M	$27.00M	$26.90M
YoY Change	102.97%	42.11%	39.38%
Inventory
Prepaid Expenses
Receivables	$154.1M	$97.71M	$97.70M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$2.061B	$872.9M	$872.9M
YoY Change	136.14%	147.29%	147.07%
LONG-TERM ASSETS
Property, Plant & Equipment	$298.0M	$63.53M	$63.50M
YoY Change	369.29%	24.58%	25.74%
Goodwill		$38.17M
YoY Change		113.8%
Intangibles		$27.56M
YoY Change
Long-Term Investments
YoY Change
Other Assets	$33.60M	$8.386M	$26.50M
YoY Change	26.79%	4.83%	227.16%
Total Long-Term Assets	$3.089B	$155.8M	$155.8M
YoY Change	1882.8%	60.58%	61.45%
TOTAL ASSETS
Total Short-Term Assets	$2.061B	$872.9M	$872.9M
Total Long-Term Assets	$3.089B	$155.8M	$155.8M
Total Assets	$5.151B	$1.029B	$1.029B
YoY Change	400.68%	128.6%	128.7%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$39.10M	$18.50M	$18.50M
YoY Change	111.35%	68.14%	66.67%
Accrued Expenses	$174.8M	$100.0M	$99.80M
YoY Change	75.15%	85.19%	86.19%
Deferred Revenue		$22.97M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$6.900M
YoY Change
Total Short-Term Liabilities	$247.2M	$137.8M	$137.8M
YoY Change	79.39%	74.44%	75.54%
LONG-TERM LIABILITIES
Long-Term Debt	$466.9M	$437.0M	$436.7M
YoY Change	6.92%
Other Long-Term Liabilities	$149.4M	$18.17M	$10.80M
YoY Change	1283.33%	101.88%	20.0%
Total Long-Term Liabilities	$616.3M	$18.17M	$447.5M
YoY Change	37.72%	101.88%	4872.22%
TOTAL LIABILITIES
Total Short-Term Liabilities	$247.2M	$137.8M	$137.8M
Total Long-Term Liabilities	$616.3M	$18.17M	$447.5M
Total Liabilities	$871.1M	$590.5M	$590.5M
YoY Change	47.52%	556.08%	556.84%
SHAREHOLDERS EQUITY
Retained Earnings		-$371.7M
YoY Change
Common Stock		$808.6M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.279B	$438.2M	$438.2M
YoY Change
Total Liabilities & Shareholders Equity	$5.151B	$1.029B	$1.029B
YoY Change	400.68%	128.6%	128.7%

Cashflow Statement

Concept	2019	2018 Q4	2018
OPERATING ACTIVITIES
Net Income	-$307.1M	-$47.20M	-$121.9M
YoY Change	151.8%	149.74%	91.42%
Depreciation, Depletion And Amortization	$110.4M	$7.850M	$26.10M
YoY Change	323.18%	46.73%	39.07%
Cash From Operating Activities	$14.05M	-$4.850M	$7.983M
YoY Change	75.97%	-227.97%	-345.25%
INVESTING ACTIVITIES
Capital Expenditures	$45.37M	-$5.960M	$5.109M
YoY Change	788.0%	4.2%	-119.05%
Acquisitions	-$122.7M		$30.57M
YoY Change	-501.48%		35.16%
Other Investing Activities	-$1.219B	$14.94M	-$114.8M
YoY Change	961.78%	-6.27%	-42.6%
Cash From Investing Activities	-$1.286B	$8.980M	-$139.4M
YoY Change	822.25%	-12.13%	-38.51%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$0.00		$0.00
YoY Change			-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$1.020B	11.83M	$515.8M
YoY Change	97.77%	59.01%	1315.65%
NET CHANGE
Cash From Operating Activities	$14.05M	-4.850M	$7.983M
Cash From Investing Activities	-$1.286B	8.980M	-$139.4M
Cash From Financing Activities	$1.020B	11.83M	$515.8M
Net Change In Cash	-$251.6M	15.96M	$384.5M
YoY Change	-165.43%	-25.59%	-298.74%
FREE CASH FLOW
Cash From Operating Activities	$14.05M	-$4.850M	$7.983M
Capital Expenditures	$45.37M	-$5.960M	$5.109M
Free Cash Flow	-$31.32M	$1.110M	$2.874M
YoY Change	-1189.77%	-88.33%	-87.8%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019	dei	Document Type DocumentType	10-K
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CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
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CY2019	dei	Entity File Number EntityFileNumber	001-37806
CY2019	dei	Entity Registrant Name EntityRegistrantName	TWILIO INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
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CY2019	dei	Security12b Title Security12bTitle	Class A Common Stock, par value $0.001 per share
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CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
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CY2017	twlo	Stock Issued During Period Value Donor Advised Fund StockIssuedDuringPeriodValueDonorAdvisedFund	1172000	USD
CY2017	twlo	Stock Repurchased During Period Value Unvested Stock Options StockRepurchasedDuringPeriodValueUnvestedStockOptions	100000	USD
CY2017	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-598000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	2623000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	53795000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	359846000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-121949000	USD
CY2018	us-gaap	Cumulative Effect On Retained Earnings Net Of Tax1 CumulativeEffectOnRetainedEarningsNetOfTax1	713000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	29736000	USD
CY2018	twlo	Adjustment To Additional Paid In Capital Vesting Of Early Exercised Stock Options AdjustmentToAdditionalPaidInCapitalVestingOfEarlyExercisedStockOptions	36000	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2000	USD
CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2654000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	10122000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	119435000	USD
CY2018	twlo	Adjustments To Additional Paid In Capital Debt Conversion Option Issuance Costs AdjustmentsToAdditionalPaidInCapitalDebtConversionOptionIssuanceCosts	2819000	USD
CY2018	twlo	Adjustments To Additional Paid In Capital Capped Call Option Issuance Costs AdjustmentsToAdditionalPaidInCapitalCappedCallOptionIssuanceCosts	58465000	USD
CY2018	twlo	Stock Issued During Period Value Donor Advised Fund StockIssuedDuringPeriodValueDonorAdvisedFund	5996000	USD
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	258000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-1001000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	98979000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	438235000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-307063000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	26095000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	18764000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-307063000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	37742000	USD
CY2019	twlo	Recapitalization Of Subsidiaries RecapitalizationOfSubsidiaries	0	USD
CY2019	twlo	Adjustment To Additional Paid In Capital Vesting Of Early Exercised Stock Options AdjustmentToAdditionalPaidInCapitalVestingOfEarlyExercisedStockOptions	21000	USD
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	3000	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	5412000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	19738000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	953000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	953000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2658898000	USD
CY2019	twlo	Equity Awards Assumed During Period Value EquityAwardsAssumedDuringPeriodValue	182554000	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	3804000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	271844000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4279411000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	-121949000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-63708000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110430000	USD
CY2019	twlo	Leases Right Of Use Asset Amortization LeasesRightOfUseAssetAmortization	23193000	USD
CY2018	twlo	Leases Right Of Use Asset Amortization LeasesRightOfUseAssetAmortization	0	USD
CY2017	twlo	Leases Right Of Use Asset Amortization LeasesRightOfUseAssetAmortization	0	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	4501000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	1496000	USD
CY2017	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-262000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	23696000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	14053000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	0	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	264318000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	93273000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	49619000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	55745000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	7676000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	12824000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	2018000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	51357000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	58234000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	15280000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	20316000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	8739000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2214000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	18021000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	5305000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	1984000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	17255000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	6980000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5433000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	46154000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	45120000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-3312000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	2968000	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	5958000	USD
CY2017	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	3560000	USD
CY2019	twlo	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-21138000	USD
CY2018	twlo	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	0	USD
CY2017	twlo	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	0	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-3501000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-597000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-841000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	14048000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	7983000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-3255000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-122749000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	30574000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	22621000	USD
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	2038422000	USD
CY2018	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	279687000	USD
CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	293186000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	697171000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	195497000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	115877000	USD
CY2019	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	21922000	USD
CY2018	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	19546000	USD
CY2017	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	17280000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	45368000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	5109000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	9538000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1285792000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-139419000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-226748000	USD
CY2019	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	980000000	USD
CY2018	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2017	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	877000	USD
CY2018	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2017	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	430000	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2018	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	550000000	USD
CY2017	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	12941000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2019	twlo	Payments For Capped Call Options PaymentsForCappedCallOptions	0	USD
CY2018	twlo	Payments For Capped Call Options PaymentsForCappedCallOptions	58465000	USD
CY2017	twlo	Payments For Capped Call Options PaymentsForCappedCallOptions	0	USD
CY2019	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	5400000	USD
CY2018	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2017	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2019	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	5646000	USD
CY2018	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	0	USD
CY2017	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	57480000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	23000000.0	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	39879000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	37645000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5412000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2654000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	678000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	100000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1020145000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	515819000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	36437000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	0	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	163000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	74000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-251599000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	384546000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-193492000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	505334000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120788000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	314280000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	253735000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	505334000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120788000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1368000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	564000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	605000	USD
CY2019	twlo	Cash Paid On Finance Leases CashPaidOnFinanceLeases	2290000	USD
CY2018	twlo	Cash Paid On Finance Leases CashPaidOnFinanceLeases	741000	USD
CY2017	twlo	Cash Paid On Finance Leases CashPaidOnFinanceLeases	0	USD
CY2019Q4	twlo	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Capital Lease Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseAssets	14173000	USD
CY2018Q4	twlo	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Capital Lease Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseAssets	0	USD
CY2017Q4	twlo	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Capital Lease Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseAssets	0	USD
CY2019	twlo	Purchases Of Property Equipment Through Financing Lease PurchasesOfPropertyEquipmentThroughFinancingLease	5848000	USD
CY2018	twlo	Purchases Of Property Equipment Through Financing Lease PurchasesOfPropertyEquipmentThroughFinancingLease	2478000	USD
CY2017	twlo	Purchases Of Property Equipment Through Financing Lease PurchasesOfPropertyEquipmentThroughFinancingLease	0	USD
CY2019	twlo	Business Combination Consideration Withheld BusinessCombinationConsiderationWithheld	7980000	USD
CY2018	twlo	Business Combination Consideration Withheld BusinessCombinationConsiderationWithheld	2290000	USD
CY2017	twlo	Business Combination Consideration Withheld BusinessCombinationConsiderationWithheld	0	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	2841452000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	0	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	0	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	7777000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	18700000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	5706000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	4176000	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	Organization and Description of Business<div style="line-height:120%;padding-top:16px;text-indent:36px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Twilio Inc. (the “Company”) was incorporated in the state of Delaware on March 13, 2008. The Company is the leader in the Cloud Communications Platform category and enables developers to build, scale and operate real-time communications 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="line-height:120%;padding-top:16px;text-align:left;text-indent:36px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The Company’s headquarters are located in San Francisco, California, and the Company has subsidiaries in Australia,</span></div><div style="line-height:120%;text-align:left;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Bermuda, Brazil, Colombia, Czech Republic, Estonia, France, Germany, Hong Kong, Ireland, India, Japan, the Netherlands, Singapore, Spain, Sweden, United Kingdom and the United States.</span></div>
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</span><div style="line-height:120%;padding-top:16px;text-indent:36px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The 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, revenue allowances and sales 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.</span></div>
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Concentration of Credit Risk</span><div style="line-height:120%;padding-top:16px;text-indent:36px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Financial 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.</span></div>The Company sells its services to a wide variety of customers. If the financial condition or results of operations of any significant customers deteriorate substantially, operating results 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.
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	26400000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	10600000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	30400000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	9400000	USD
CY2019	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	4500000	USD
CY2018	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1400000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	27000000.0	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	10600000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	4900000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6300000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4900000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	1000000.0	USD
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	123500000	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	132000000.0	USD
CY2019Q1	us-gaap	Deferred Rent Credit DeferredRentCredit	9000000.0	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1793585000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	465217000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	189052000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	189052000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1594334000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	4757000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	58000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1599033000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	4757000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	58000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	465217000	USD
CY2019Q4	twlo	Debt Securities Available For Sale Privately Held Amortized Cost DebtSecuritiesAvailableForSalePrivatelyHeldAmortizedCost	5500000	USD
CY2019Q4	twlo	Debt Securities Available For Sale Privately Held Amortized Cost DebtSecuritiesAvailableForSalePrivatelyHeldAmortizedCost	5500000	USD
CY2019Q4	twlo	Financial Assets Amortized Cost Or Carrying Value FinancialAssetsAmortizedCostOrCarryingValue	1788886000	USD
CY2018Q4	twlo	Available For Sale Securities Debt Maturities Rolling Year Two Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoAmortizedCostBasis	0	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	261128000	USD
CY2019Q4	twlo	Available For Sale Securities Debt Maturities Rolling Year Two Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoAmortizedCostBasis	734338000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	63534000	USD
CY2019Q4	twlo	Available For Sale Securities Debt Maturities Rolling Year Two Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoFairValue	737852000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	261468000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	23000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	130000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	233000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	261128000	USD
CY2018Q4	twlo	Financial Assets Amortized Cost Or Carrying Value FinancialAssetsAmortizedCostOrCarryingValue	726685000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	23000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	130000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	233000	USD
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	726345000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	20800000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	3000000.0	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	2600000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	859996000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	861181000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	261468000	USD
CY2018Q4	twlo	Available For Sale Securities Debt Maturities Rolling Year Two Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoFairValue	0	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1594334000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1599033000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	261468000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	261128000	USD
CY2019Q3	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	5500000	USD
CY2019Q4	twlo	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	222404000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	108270000	USD
CY2019Q4	twlo	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	81148000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	44736000	USD
CY2019Q4	twlo	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	141256000	USD
CY2019	us-gaap	Depreciation Depreciation	37500000	USD
CY2018	us-gaap	Depreciation Depreciation	18900000	USD
CY2017	us-gaap	Depreciation Depreciation	13100000	USD
CY2019	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	29700000	USD
CY2018	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	25300000	USD
CY2017	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	21500000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	7800000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	5700000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	4200000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	17100000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	13000000.0	USD
CY2017	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	8400000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	17104000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	13024000	USD
CY2017	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	8407000	USD
CY2019	twlo	Lessee Operating Lease Number Of Contracts LesseeOperatingLeaseNumberOfContracts	22	property
CY2019Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	32558000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	6090000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	708000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	6342000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	315000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	33214000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6924000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	156741000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	2333000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	3792000	USD
CY2019	us-gaap	Lease Cost LeaseCost	49490000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	14770000	USD
CY2019Q4	twlo	Lease Right Of Use Asset LeaseRightOfUseAsset	171511000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	27156000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	27859000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	1939000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	226483000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1581000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	25400000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	139200000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	8746000	USD
CY2019Q4	twlo	Lease Liability LeaseLiability	182026000	USD
CY2019Q4	twlo	Lessee Operating Lease Accumulated Amortization LesseeOperatingLeaseAccumulatedAmortization	23200000	USD
CY2019Q4	twlo	Lessee Finance Lease Accumulated Depreciation LesseeFinanceLeaseAccumulatedDepreciation	6000000.0	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	28291000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	687000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	5646000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y1M6D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.055
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.053
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	35997000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	7586000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	34762000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	4659000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	43125000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	581000	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	23631000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	4528000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Remainder Of Fiscal Year OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear	24128000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Remainder Of Fiscal Year CapitalLeasesFutureMinimumPaymentsRemainderOfFiscalYear	306000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	29527000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	512000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	200357000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	17055000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	34001000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1385000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	166356000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	15670000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	27156000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6924000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	139200000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	8746000	USD
CY2019Q4	twlo	Lessee Operating Lease Lease Not Yet Commenced Liability LesseeOperatingLeaseLeaseNotYetCommencedLiability	54100000	USD
CY2019Q4	twlo	Lessee Finance Lease Lease Not Yet Commenced Liability LesseeFinanceLeaseLeaseNotYetCommencedLiability	700000	USD
CY2019	twlo	Lessee Lease Lease Not Yet Commenced Term Of Contract LesseeLeaseLeaseNotYetCommencedTermOfContract	P6Y9M18D
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	10300000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	8100000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	30898000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	573000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	30492000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	590000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	30122000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	608000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	81316000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	2296784000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	456184000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	548107000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	543442000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	87258000	USD
CY2019	twlo	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Release Of Valuation Allowance On Deferred Tax Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReleaseOfValuationAllowanceOnDeferredTaxAssets	48000000.0	USD
CY2019	twlo	Unrecognized Tax Benefits Increase Resulting From Ongoing Benefit UnrecognizedTaxBenefitsIncreaseResultingFromOngoingBenefit	29400000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1148214000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	796607000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	-322030000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	-211705000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	17851000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	20356000	USD
CY2018	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	571000	USD
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-613000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	38165000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2262622000	USD
CY2019	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-4003000	USD
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	87258000	USD
CY2019Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	4023000	USD
CY2018Q4	us-gaap	Other Employee Related Liabilities Current OtherEmployeeRelatedLiabilitiesCurrent	2672000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	72900000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7200000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5700000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	460849000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	41382000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	14119000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	27263000	USD
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	41677000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	14119000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	27558000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	81419000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	79785000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	77170000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	73888000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	68359000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	75563000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	456184000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	20462000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	9886000	USD
CY2019Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	12898000	USD
CY2018Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	8564000	USD
CY2019Q4	twlo	Accrued Cost Of Revenue Current AccruedCostOfRevenueCurrent	47563000	USD
CY2018Q4	twlo	Accrued Cost Of Revenue Current AccruedCostOfRevenueCurrent	29901000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	28592000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	22785000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	18054000	USD
CY2019Q4	twlo	Accrued Liabilities And Other Liabilities Current AccruedLiabilitiesAndOtherLiabilitiesCurrent	147681000	USD
CY2018Q4	twlo	Accrued Liabilities And Other Liabilities Current AccruedLiabilitiesAndOtherLiabilitiesCurrent	96343000	USD
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability Current BusinessCombinationContingentConsiderationLiabilityCurrent	6520000	USD
CY2019Q4	us-gaap	Deferred Rent Credit Current DeferredRentCreditCurrent	0	USD
CY2018Q4	us-gaap	Deferred Rent Credit Current DeferredRentCreditCurrent	1418000	USD
CY2019Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	4838000	USD
CY2018Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	2217000	USD
CY2019Q4	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	0	USD
CY2018Q4	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	7569000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	7535000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	5181000	USD
CY2019Q4	twlo	Business Combination Consideration Holdback Non Current BusinessCombinationConsiderationHoldbackNonCurrent	3750000	USD
CY2018Q4	twlo	Business Combination Consideration Holdback Non Current BusinessCombinationConsiderationHoldbackNonCurrent	2290000	USD
CY2018Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	2170000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	6462000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	959000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	17747000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	18169000	USD
CY2019Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.057
CY2017	twlo	Allowance For Doubtful Account Percent Of Revenue AllowanceForDoubtfulAccountPercentOfRevenue	0
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6287000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4945000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1033000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1076000	USD
CY2019	twlo	Provision For Doubtful Accounts And Other ProvisionForDoubtfulAccountsAndOther	2226000	USD
CY2018	twlo	Provision For Doubtful Accounts And Other ProvisionForDoubtfulAccountsAndOther	4085000	USD
CY2017	twlo	Provision For Doubtful Accounts And Other ProvisionForDoubtfulAccountsAndOther	580000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	884000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	173000	USD
CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	623000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4945000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1033000	USD
CY2019	twlo	Allowance For Doubtful Account Percent Of Revenue AllowanceForDoubtfulAccountPercentOfRevenue	0.01
CY2018	twlo	Allowance For Doubtful Account Percent Of Revenue AllowanceForDoubtfulAccountPercentOfRevenue	0.01
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CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	395000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	65955000	USD
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CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	194000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	472000	USD
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CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	188244000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	90326000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	255893000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	147354000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	78900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	183739000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	40890000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	11426000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Software DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware	13032000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Software DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware	10686000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Software DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware	7664000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1157000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	838000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1015000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	107281000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	2997000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	2101000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1578000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1990000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2380000	USD
CY2019Q4	twlo	Deferred Tax Liabilities Convertible Debt DeferredTaxLiabilitiesConvertibleDebt	20745000	USD
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CY2018Q4	twlo	Deferred Tax Liabilities Deferred Commissions DeferredTaxLiabilitiesDeferredCommissions	2396000	USD
CY2017Q4	twlo	Deferred Tax Liabilities Deferred Commissions DeferredTaxLiabilitiesDeferredCommissions	718000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	405000	USD
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CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	7535000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	5181000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	2452000	USD
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CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	15635000	USD
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CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12275000	USD
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CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	49000000.0	USD
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CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	49042000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	15635000	USD

Files In Submission

Name	View Source	Status
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$TWLO
Twilio Inc Stock $twlo

2019 Form 10-K Financial Statement

#000144766920000045 Filed on March 02, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TWLO Twilio Inc Stock $twlo

2019 Form 10-K Financial Statement

#000144766920000045 Filed on March 02, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TWLO
Twilio Inc Stock $twlo