$DBX
DROPBOX, INC. Stock $dbx

$dbx Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000146762320000011 Filed on February 21, 2020

Income Statement

Concept	2018 Q4	2018	2017
Revenue	$375.9M	$1.392B	$1.107B
YoY Change	23.04%	25.74%	31.01%
Cost Of Revenue	$94.40M	$394.7M	$368.9M
YoY Change	2.94%	6.99%	-5.56%
Gross Profit	$281.5M	$997.0M	$737.9M
YoY Change	31.67%	35.11%	62.46%
Gross Profit Margin	74.89%	71.64%	66.67%
Selling, General & Admin	$156.7M	$722.8M	$471.3M
YoY Change	6.53%	53.36%	31.65%
% of Gross Profit	55.67%	72.5%	63.87%
Research & Development	$136.8M	$768.2M	$380.3M
YoY Change	31.54%	102.0%	31.27%
% of Gross Profit	48.6%	77.05%	51.54%
Depreciation & Amortization	$45.20M	$158.6M	$170.7M
YoY Change	5.36%	-7.09%	-1.78%
% of Gross Profit	16.06%	15.91%	23.13%
Operating Expenses	$293.5M	$1.491B	$851.6M
YoY Change	16.89%	75.08%	31.48%
Operating Profit	-$12.00M	-$494.0M	-$113.7M
YoY Change	-67.83%	334.48%	-41.24%
Interest Expense	$3.900M	$7.100M	-$11.00M
YoY Change	-343.75%	-164.55%	-32.93%
% of Operating Profit
Other Income/Expense, Net	$700.0K	$6.800M	$13.20M
YoY Change	250.0%	-48.48%	169.39%
Pretax Income	-$7.400M	-$480.1M	-$111.5M
YoY Change	-80.88%	330.58%	-45.61%
Income Tax	$2.100M	$4.800M	$200.0K
% Of Pretax Income
Net Earnings	-$9.500M	-$484.9M	-$111.7M
YoY Change	-74.8%	334.11%	-46.86%
Net Earnings / Revenue	-2.53%	-34.84%	-10.09%
Basic Earnings Per Share
Diluted Earnings Per Share	-$23.26K	-$1.352M	-$285.0K
COMMON SHARES
Basic Shares Outstanding
Diluted Shares Outstanding

Balance Sheet

Concept	2018 Q4	2018	2017
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.089B	$1.089B	$430.0M
YoY Change	153.33%	153.33%	21.92%
Cash & Equivalents	$519.3M	$416.3M	$367.1M
Short-Term Investments	$570.0M	$570.0M
Other Short-Term Assets	$92.30M	$46.10M	$53.60M
YoY Change	72.2%	-13.99%	20.45%
Inventory
Prepaid Expenses
Receivables	$28.60M	$28.60M	$28.70M
Other Receivables	$0.00	$46.20M	$5.800M
Total Short-Term Assets	$1.210B	$1.210B	$518.1M
YoY Change	133.58%	133.58%	25.33%
LONG-TERM ASSETS
Property, Plant & Equipment	$310.6M	$310.6M	$341.9M
YoY Change	-9.15%	-9.15%	-23.0%
Goodwill	$96.50M
YoY Change	-2.43%
Intangibles	$14.70M
YoY Change	-13.53%
Long-Term Investments
YoY Change
Other Assets	$62.10M	$62.10M	$44.00M
YoY Change	41.14%	41.14%	65.41%
Total Long-Term Assets	$483.9M	$483.9M	$501.8M
YoY Change	-3.57%	-3.57%	-15.06%
TOTAL ASSETS
Total Short-Term Assets	$1.210B	$1.210B	$518.1M
Total Long-Term Assets	$483.9M	$483.9M	$501.8M
Total Assets	$1.694B	$1.694B	$1.020B
YoY Change	66.1%	66.1%	1.56%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$33.30M	$33.30M	$31.90M
YoY Change	4.39%	4.39%	105.81%
Accrued Expenses	$201.5M	$201.5M	$161.2M
YoY Change	25.0%	25.0%	40.66%
Deferred Revenue	$485.0M
YoY Change	16.06%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$73.80M	$73.80M	$102.7M
YoY Change	-28.14%	-28.14%	-19.51%
Total Short-Term Liabilities	$837.5M	$837.5M	$738.4M
YoY Change	13.42%	13.42%	16.23%
LONG-TERM LIABILITIES
Long-Term Debt	$89.90M	$89.90M	$71.60M
YoY Change	25.56%	25.56%	-44.75%
Other Long-Term Liabilities	$89.90M	$89.90M	$107.0M
YoY Change	141.67%	-15.98%	-8.15%
Total Long-Term Liabilities	$89.90M	$179.8M	$178.6M
YoY Change	141.67%	0.67%	-27.43%
TOTAL LIABILITIES
Total Short-Term Liabilities	$837.5M	$837.5M	$738.4M
Total Long-Term Liabilities	$89.90M	$179.8M	$178.6M
Total Liabilities	$1.017B	$1.017B	$917.0M
YoY Change	10.94%	10.94%	4.04%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.660B
YoY Change	58.09%
Common Stock	$0.00
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$676.8M	$676.8M	$102.9M
YoY Change
Total Liabilities & Shareholders Equity	$1.694B	$1.694B	$1.020B
YoY Change	66.1%	66.1%	1.56%

Cashflow Statement

Concept	2018 Q4	2018	2017
OPERATING ACTIVITIES
Net Income	-$9.500M	-$484.9M	-$111.7M
YoY Change	-74.8%	334.11%	-46.86%
Depreciation, Depletion And Amortization	$45.20M	$158.6M	$170.7M
YoY Change	5.36%	-7.09%	-1.78%
Cash From Operating Activities	$123.7M	$425.4M	$330.3M
YoY Change	73.98%	28.79%	30.76%
INVESTING ACTIVITIES
Capital Expenditures	-$35.50M	$63.00M	$25.30M
YoY Change	166.92%	149.01%	-78.04%
Acquisitions		$0.00	$0.00
YoY Change
Other Investing Activities	-$69.30M	$1.000M	-$2.200M
YoY Change	-23200.0%	-145.45%	-61.4%
Cash From Investing Activities	-$104.8M	-$633.8M	-$23.90M
YoY Change	706.15%	2551.88%	-79.75%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		-$26.20M	$500.0K
YoY Change		-5340.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-34.20M	$300.8M	-$231.7M
YoY Change	-32.41%	-229.82%	72.27%
NET CHANGE
Cash From Operating Activities	123.7M	$425.4M	$330.3M
Cash From Investing Activities	-104.8M	-$633.8M	-$23.90M
Cash From Financing Activities	-34.20M	$300.8M	-$231.7M
Net Change In Cash	-15.30M	$89.30M	$77.30M
YoY Change	-304.0%	15.52%	77200.0%
FREE CASH FLOW
Cash From Operating Activities	$123.7M	$425.4M	$330.3M
Capital Expenditures	-$35.50M	$63.00M	$25.30M
Free Cash Flow	$159.2M	$362.4M	$305.0M
YoY Change	88.63%	18.82%	121.98%

Facts In Submission

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CY2018	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	351800000	USD
CY2018	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	0	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	739700000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	650100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-5400000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-484900000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	676800000	USD
CY2019Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	1000000.0	USD
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	85400000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2200000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	261200000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4500000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-111700000	USD
CY2018	dbx	Increase Decrease In Accrued Liabilities And Other Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherLiabilities	40300000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-52700000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	808400000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-52700000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-484900000	USD
CY2017	dbx	Increase Decrease In Accrued Liabilities And Other Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherLiabilities	34000000.0	USD
CY2019	dbx	Deprecation Depletion And Amortization Excluding Amortization Of Deferred Sales Commissions DeprecationDepletionAndAmortizationExcludingAmortizationOfDeferredSalesCommissions	173500000	USD
CY2018	dbx	Deprecation Depletion And Amortization Excluding Amortization Of Deferred Sales Commissions DeprecationDepletionAndAmortizationExcludingAmortizationOfDeferredSalesCommissions	166800000	USD
CY2017	dbx	Deprecation Depletion And Amortization Excluding Amortization Of Deferred Sales Commissions DeprecationDepletionAndAmortizationExcludingAmortizationOfDeferredSalesCommissions	181800000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	261200000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	650100000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	164600000	USD
CY2019	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	17500000	USD
CY2018	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	12100000	USD
CY2017	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	6600000	USD
CY2019	us-gaap	Noncash Contribution Expense NoncashContributionExpense	0	USD
CY2018	us-gaap	Noncash Contribution Expense NoncashContributionExpense	0	USD
CY2017	us-gaap	Noncash Contribution Expense NoncashContributionExpense	9400000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	16600000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	1900000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	1700000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	7500000	USD
CY2018	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-100000	USD
CY2017	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	14400000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	18200000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	47900000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	18200000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-61200000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11200000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	10600000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	6400000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1700000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	16200000	USD
CY2019	dbx	Increase Decrease In Accrued Liabilities And Other Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherLiabilities	23000000.0	USD
CY2019	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	19100000	USD
CY2018	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	25000000.0	USD
CY2017	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	14400000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	68700000	USD
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	66400000	USD
CY2017	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	64300000	USD
CY2019	dbx	Increase Decrease Tenant Improvement Allowance Reimbursement IncreaseDecreaseTenantImprovementAllowanceReimbursement	55300000	USD
CY2018	dbx	Increase Decrease Tenant Improvement Allowance Reimbursement IncreaseDecreaseTenantImprovementAllowanceReimbursement	0	USD
CY2017	dbx	Increase Decrease Tenant Improvement Allowance Reimbursement IncreaseDecreaseTenantImprovementAllowanceReimbursement	0	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-62400000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	12200000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-4400000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	173900000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	528500000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	425400000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	330300000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	136100000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	63000000.0	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	25300000	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	1700000	USD
CY2018	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	3000000.0	USD
CY2017	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	800000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	775400000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	850400000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	0	USD
CY2019	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	294800000	USD
CY2018	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	212400000	USD
CY2017	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	0	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	456100000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	71200000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-16200000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1000000.0	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2200000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-320000000.0	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-633800000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-23900000	USD
CY2019	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2018	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	746600000	USD
CY2017	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	0	USD
CY2019	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2018	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	4500000	USD
CY2017	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2500000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	85400000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	351900000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	87900000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2200000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	26200000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	500000	USD
CY2019	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	92900000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-231700000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	200000	USD
CY2018	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	109100000	USD
CY2017	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	133000000.0	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-600000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-6500000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8800000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-176700000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	300800000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-3100000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2600000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	32000000.0	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	89300000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	77300000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	519300000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	430000000.0	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	352700000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	551300000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	519300000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	430000000.0	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	9800000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	8300000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	10800000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	600000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1400000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3400000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	19900000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	7300000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2400000	USD
CY2019	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	144100000	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	98500000	USD
CY2017	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	44900000	USD
CY2019	dbx	Deferred Offering Costs Incurred But Not Yet Paid DeferredOfferingCostsIncurredButNotYetPaid	0	USD
CY2018	dbx	Deferred Offering Costs Incurred But Not Yet Paid DeferredOfferingCostsIncurredButNotYetPaid	0	USD
CY2017	dbx	Deferred Offering Costs Incurred But Not Yet Paid DeferredOfferingCostsIncurredButNotYetPaid	1600000	USD
CY2018Q1	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	21.00
CY2018Q1	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	538200000	USD
CY2018Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	26822409	shares
CY2018Q1	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	6900000	USD
CY2018Q1	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	21.00
CY2018Q1	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	746600000	USD
CY2018Q1	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	6900000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:8px;text-align:left;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported and disclosed in the Company’s consolidated financial statements and accompanying notes. These estimates are based on information available as of the date of the consolidated financial statements. Management evaluates these estimates and assumptions on a regular basis. Actual results may differ materially from these estimates.</span></div><div style="line-height:120%;text-align:left;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div>
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	800000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1900000	USD
CY2019	us-gaap	Revenue Performance Obligation Description Of Timing RevenuePerformanceObligationDescriptionOfTiming	one year or longer
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	481100000	USD
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	411600000	USD
CY2017	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	353000000.0	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	613400000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	88800000	USD
CY2018	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	100900000	USD
CY2017	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	80100000	USD
CY2019	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="line-height:120%;padding-top:8px;text-align:left;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash, cash equivalents, accounts receivable, and short-term investments. The Company places its cash and cash equivalents, and short-term investments with well-established financial institutions. </span></div><div style="line-height:120%;text-align:left;text-indent:32px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div>Trade accounts receivables are typically unsecured and are derived from revenue earned from customers located around the world.
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	500000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	1200000	USD
CY2019Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	7400000	USD
CY2018Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	46200000	USD
CY2019	dbx	Capitalized Contract Costs Additions CapitalizedContractCostsAdditions	28100000	USD
CY2018	dbx	Capitalized Contract Costs Additions CapitalizedContractCostsAdditions	32000000.0	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Amortization Period CapitalizedContractCostAmortizationPeriod	P5Y
CY2019	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	17500000	USD
CY2018	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	12100000	USD
CY2017	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	6600000	USD
CY2019	us-gaap	Capitalized Contract Cost Impairment Loss CapitalizedContractCostImpairmentLoss	0	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	9800000	USD
CY2019	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	4500000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	551300000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	551300000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	606300000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1500000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	100000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	607700000	USD
CY2019Q4	dbx	Cash Cash Equivalents And Short Term Investments Amortized Cost CashCashEquivalentsAndShortTermInvestmentsAmortizedCost	1157600000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1500000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	600000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	100000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	1159000000.0	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	519300000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	519300000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	570500000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	100000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	570000000.0	USD
CY2018Q4	dbx	Cash Cash Equivalents And Short Term Investments Amortized Cost CashCashEquivalentsAndShortTermInvestmentsAmortizedCost	1089800000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	100000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	600000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	1089300000	USD
CY2019Q4	us-gaap	Credit And Debit Card Receivables At Carrying Value CreditAndDebitCardReceivablesAtCarryingValue	11500000	USD
CY2018Q4	us-gaap	Credit And Debit Card Receivables At Carrying Value CreditAndDebitCardReceivablesAtCarryingValue	11900000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	275900000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	276500000	USD
CY2019Q4	dbx	Debt Securities Available For Sale Securities Maturity Allocated And Single Maturity Date After One Through Three Years Amortized Cost DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsAmortizedCost	310700000	USD
CY2019Q4	dbx	Debt Securities Available For Sale Securities Maturity Allocated And Single Maturity Date After One Through Three Years Fair Value DebtSecuritiesAvailableForSaleSecuritiesMaturityAllocatedAndSingleMaturityDateAfterOneThroughThreeYearsFairValue	311500000	USD
CY2019Q4	dbx	Available For Sale Securities Debt Maturities After Three Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsAmortizedCost	19700000	USD
CY2019Q4	dbx	Available For Sale Securities Debt Maturities After Three Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterThreeYearsFairValue	19700000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	606300000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	607700000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	62	investment
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	125600000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	100000	USD
CY2019	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
CY2019	us-gaap	Investment Income Net InvestmentIncomeNet	22800000	USD
CY2018	us-gaap	Investment Income Net InvestmentIncomeNet	16800000	USD
CY2017	us-gaap	Investment Income Net InvestmentIncomeNet	3000000.0	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1032500000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	874500000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	587200000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	563900000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	445300000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	310600000	USD
CY2019	us-gaap	Depreciation Depreciation	159900000	USD
CY2018	us-gaap	Depreciation Depreciation	158600000	USD
CY2019Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	105000000.0	USD
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	100400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	57600000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10500000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	85700000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	47400000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	14700000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	13600000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6100000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	13900000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	11600000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	8300000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	7700000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	3300000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	2600000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	47400000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	96500000	USD
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	2600000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	234500000	USD
CY2019Q1	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2019	us-gaap	Sublease Income SubleaseIncome	7100000	USD
CY2018	us-gaap	Sublease Income SubleaseIncome	11800000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	103200000	USD
CY2018	us-gaap	Operating Lease Cost OperatingLeaseCost	85900000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	80300000	USD
CY2018	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	87600000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	9200000	USD
CY2018	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	8000000.0	USD
CY2019	dbx	Finance Lease Cost FinanceLeaseCost	89500000	USD
CY2018	dbx	Finance Lease Cost FinanceLeaseCost	95600000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	102800000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	9200000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	92900000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	297000000.0	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	144100000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y3M18D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.043
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.043
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	115900000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	84100000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	108000000.0	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	68900000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	98200000	USD
CY2019Q4	us-gaap	Other Commitment OtherCommitment	73300000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	54800000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	82000000.0	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	21100000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	74200000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	100000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	583000000.0	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0.0	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1061300000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	229000000.0	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	250200000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	14100000	USD
CY2019Q4	dbx	Lessee Operating Lease Tenant Improvement Allowance Receivable LesseeOperatingLeaseTenantImprovementAllowanceReceivable	19300000	USD
CY2019Q4	dbx	Finance Lease Tenant Improvement Allowance Receivable FinanceLeaseTenantImprovementAllowanceReceivable	0	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	791800000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	214900000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	34500000	USD
CY2019Q4	dbx	Operating Lease Minimum Obligations OperatingLeaseMinimumObligations	836400000	USD
CY2019Q4	dbx	Lessee Operating Lease Tenant Improvement Reimbursement LesseeOperatingLeaseTenantImprovementReimbursement	75000000.0	USD
CY2019	dbx	Increase Decrease Tenant Improvement Allowance Reimbursement IncreaseDecreaseTenantImprovementAllowanceReimbursement	55300000	USD
CY2019	dbx	Lessee Operating Lease Lease Not Yet Commenced Amount LesseeOperatingLeaseLeaseNotYetCommencedAmount	91900000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	84100000	USD
CY2019Q4	dbx	Lessee Operating And Short Term Leases Payments Due Next Twelve Months LesseeOperatingAndShortTermLeasesPaymentsDueNextTwelveMonths	119500000	USD
CY2019Q4	us-gaap	Other Commitment Due In Next Twelve Months OtherCommitmentDueInNextTwelveMonths	48800000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	68900000	USD
CY2019Q4	dbx	Lessee Operating And Short Term Leases Payments Due Year Two LesseeOperatingAndShortTermLeasesPaymentsDueYearTwo	116400000	USD
CY2019Q4	us-gaap	Other Commitment Due In Second Year OtherCommitmentDueInSecondYear	6700000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	54800000	USD
CY2019Q4	dbx	Lessee Operating And Short Term Leases Payments Due Year Three LesseeOperatingAndShortTermLeasesPaymentsDueYearThree	108100000	USD
CY2019Q4	us-gaap	Other Commitment Due In Third Year OtherCommitmentDueInThirdYear	700000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	21100000	USD
CY2019Q4	dbx	Lessee Operating And Short Term Leases Payments Due Year Four LesseeOperatingAndShortTermLeasesPaymentsDueYearFour	91600000	USD
CY2019Q4	us-gaap	Other Commitment Due In Fourth Year OtherCommitmentDueInFourthYear	400000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	100000	USD
CY2019Q4	dbx	Lessee Operating And Short Term Leases Payments Due Year Five LesseeOperatingAndShortTermLeasesPaymentsDueYearFive	83900000	USD
CY2019Q4	us-gaap	Other Commitment Due In Fifth Year OtherCommitmentDueInFifthYear	0	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2019Q4	dbx	Lessee Operating And Short Term Leases Payments Due After Year Five LesseeOperatingAndShortTermLeasesPaymentsDueAfterYearFive	636200000	USD
CY2019Q4	us-gaap	Other Commitment Due After Fifth Year OtherCommitmentDueAfterFifthYear	16700000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	229000000.0	USD
CY2019Q4	dbx	Lessee Operating And Short Term Leases Payments Due LesseeOperatingAndShortTermLeasesPaymentsDue	1155700000	USD
CY2019Q4	dbx	Finance Lease Liability Interest And Taxes FinanceLeaseLiabilityInterestAndTaxes	14100000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	76700000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	138200000	USD
CY2019Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	92200000	USD
CY2018Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	75700000	USD
CY2019Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	29200000	USD
CY2018Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	28100000	USD
CY2019Q4	us-gaap	Accrued Rent Current AccruedRentCurrent	0	USD
CY2018Q4	us-gaap	Accrued Rent Current AccruedRentCurrent	41000000.0	USD
CY2019Q4	dbx	Other Accrued Liabilities And Other Liabilities Current OtherAccruedLiabilitiesAndOtherLiabilitiesCurrent	40500000	USD
CY2018Q4	dbx	Other Accrued Liabilities And Other Liabilities Current OtherAccruedLiabilitiesAndOtherLiabilitiesCurrent	19700000	USD
CY2019Q4	dbx	Accrued Liabilitiesand Other Liabilities Current AccruedLiabilitiesandOtherLiabilitiesCurrent	161900000	USD
CY2018Q4	dbx	Accrued Liabilitiesand Other Liabilities Current AccruedLiabilitiesandOtherLiabilitiesCurrent	164500000	USD
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	240000000.0	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	9000000.0	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5000000.0	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.52
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y6M
CY2017Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	41400000	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	1300000	shares
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3400000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	7.75
CY2018	dbx	Sharebased Compensation Arrangement By Sharebased Payment Award Shares Canceled SharebasedCompensationArrangementBySharebasedPaymentAwardSharesCanceled	6000000.0	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	300000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	22.90
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	15600000	shares
CY2018	dbx	Share Based Compensation Arrangement By Sharebased Payment Award Decrease In Numberof Shares Authorized From Stock Granted ShareBasedCompensationArrangementBySharebasedPaymentAwardDecreaseInNumberofSharesAuthorizedFromStockGranted	16200000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	57100000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1300000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	14.68
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	9100000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	21200000	shares
CY2019	dbx	Sharebased Compensation Arrangementby Sharebased Payment Award Assumed Through Business Acquisition SharebasedCompensationArrangementbySharebasedPaymentAwardAssumedThroughBusinessAcquisition	900000	shares
CY2019	dbx	Sharebased Compensation Arrangementby Sharebased Payment Award Options Assumed Through Business Acquisition SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisition	900000	shares
CY2019	dbx	Sharebased Compensation Arrangementby Sharebased Payment Award Options Assumed In Business Acquisition Weighted Average Exercise Price SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedInBusinessAcquisitionWeightedAverageExercisePrice	6.02
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	300000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	6.82
CY2019	dbx	Sharebased Compensation Arrangement By Sharebased Payment Award Shares Canceled SharebasedCompensationArrangementBySharebasedPaymentAwardSharesCanceled	7100000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	200000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	18.89
CY2019	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	4100000	shares
CY2019	dbx	Share Based Compensation Arrangement By Sharebased Payment Award Decrease In Numberof Shares Authorized From Stock Granted ShareBasedCompensationArrangementBySharebasedPaymentAwardDecreaseInNumberofSharesAuthorizedFromStockGranted	24200000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	300000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	23.09
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	66200000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2000000.0	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	12.28
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y6M
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	16400000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	1300000	shares
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	16.01
CY2019	dbx	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Remaining Contractual Term SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageRemainingContractualTerm	P5Y4M24D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	7900000	USD
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	700000	shares
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	5.76
CY2019Q4	dbx	Sharebased Compensation Arrangementby Sharebased Payment Award Options Nonvested Aggregate Intrinsic Value SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedAggregateIntrinsicValue	8500000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	5300000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	59000000.0	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-497100000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-76900000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	46800000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	17000000.0	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-34600000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-52000000.0	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-480100000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2019	dbx	Sharebased Compensation Arrangementby Sharebased Payment Award Options Assumedin Period Weighted Average Grant Date Fair Value SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedinPeriodWeightedAverageGrantDateFairValue	21.60
CY2019	dbx	Sharebased Compensation Arrangementby Sharebased Payment Award Options Assumed Through Business Acquisition Fair Value SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsAssumedThroughBusinessAcquisitionFairValue	19400000	USD
CY2019	dbx	Allocated Sharebased Compensation Expense Post Combination AllocatedSharebasedCompensationExpensePostCombination	18600000	USD
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	45900000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	53800000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	206400000	shares
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-98800000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-111500000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-100000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	100000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-100000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	600000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	200000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	300000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	7700000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4600000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2300000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-6600000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1400000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-600000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-300000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-100000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-900000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	700000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4800000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	200000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-10900000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-100800000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-37900000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-2400000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-10700000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1700000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	900000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-1800000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	12300000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	30200000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	86500000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	25400000	USD
CY2019	dbx	Effective Income Tax Rate Reconciliation Non Deductible Compensation EffectiveIncomeTaxRateReconciliationNonDeductibleCompensation	3400000	USD
CY2018	dbx	Effective Income Tax Rate Reconciliation Non Deductible Compensation EffectiveIncomeTaxRateReconciliationNonDeductibleCompensation	0	USD
CY2017	dbx	Effective Income Tax Rate Reconciliation Non Deductible Compensation EffectiveIncomeTaxRateReconciliationNonDeductibleCompensation	0	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	2500000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	2200000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	200000	USD
CY2019	dbx	Effective Income Tax Rate Reconciliation Permanent Differences Amount EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount	2100000	USD
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CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	700000	USD
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CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	200000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	257200000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	188600000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	29300000	USD
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CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	42000000.0	USD
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CY2018Q4	dbx	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	0	USD
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CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1106800000	USD

Files In Submission

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$DBX
DROPBOX, INC. Stock $dbx

2018 Q4 Form 10-K Financial Statement

#000146762320000011 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DBX DROPBOX, INC. Stock $dbx

2018 Q4 Form 10-K Financial Statement

#000146762320000011 Filed on February 21, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DBX
DROPBOX, INC. Stock $dbx