$DNB
Dun & Bradstreet Holdings, Inc. Stock $dnb

$dnb Overview Financials Valuation SEC Filings Company Website

2020 Form 10-K Financial Statement

#000179920821000013 Filed on February 25, 2021

Income Statement

Concept	2020	2019 Q4	2019 Q3
Revenue	$1.739B	$432.7M	$408.2M
YoY Change	20.83%	-3.16%
Cost Of Revenue	$545.6M	$131.3M
YoY Change	8.0%	-6.81%
Gross Profit	$1.193B	$301.4M
YoY Change	9.67%	-1.47%
Gross Profit Margin	68.59%	69.66%
Selling, General & Admin	$559.8M	$158.9M	$152.7M
YoY Change	-14.87%	8.46%
% of Gross Profit	46.94%	52.72%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$537.8M	$152.9M	$112.2M
YoY Change	10.41%	585.65%	68.98%
% of Gross Profit	45.1%	50.73%
Operating Expenses	$1.675B	$300.7M	$409.2M
YoY Change	2.52%	78.14%
Operating Profit	$55.60M	-$7.000M	-$1.000M
YoY Change	-125.08%	-105.11%
Interest Expense	$271.1M	-$82.60M	$85.60M
YoY Change	-10.68%	530.53%
% of Operating Profit	487.59%
Other Income/Expense, Net	-$282.0M	-$173.4M	-$78.80M
YoY Change	-37.95%	8157.14%
Pretax Income	-$401.1M	-$263.0M	-$79.80M
YoY Change	-50.53%	-318.98%
Income Tax	-$112.4M	-$34.10M	-$24.00M
% Of Pretax Income
Net Earnings	-$111.6M	-$228.1M	-$55.30M
YoY Change	-79.84%	-389.83%
Net Earnings / Revenue	-6.42%	-52.72%	-13.55%
Basic Earnings Per Share	-$0.49		-$0.28
Diluted Earnings Per Share	-$0.49	-$562.4K	-$0.28
COMMON SHARES
Basic Shares Outstanding	367.1M shares		314.5M shares
Diluted Shares Outstanding	367.1M shares		314.5M shares

Balance Sheet

Concept	2020	2019 Q4	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$354.5M	$98.60M	$100.6M
YoY Change	259.53%
Cash & Equivalents	$354.5M	$98.60M	$100.6M
Short-Term Investments
Other Short-Term Assets	$198.2M	$4.600M	$36.70M
YoY Change	395.5%
Inventory
Prepaid Expenses
Receivables	$313.7M	$272.2M	$224.2M
Other Receivables	$7.600M	$10.00M	$11.60M
Total Short-Term Assets	$874.0M	$417.9M	$373.1M
YoY Change	109.14%
LONG-TERM ASSETS
Property, Plant & Equipment	$99.30M	$29.40M	$120.9M
YoY Change	-15.35%
Goodwill		$2.842B	$2.967B
YoY Change		268.67%
Intangibles		$5.255B	$5.254B
YoY Change		1749.52%
Long-Term Investments	$27.00M
YoY Change
Other Assets	$101.9M	$134.6M	$75.70M
YoY Change	-4.14%
Total Long-Term Assets	$8.345B	$8.695B	$8.793B
YoY Change	-4.02%
TOTAL ASSETS
Total Short-Term Assets	$874.0M	$417.9M	$373.1M
Total Long-Term Assets	$8.345B	$8.695B	$8.793B
Total Assets	$9.219B	$9.113B	$9.166B
YoY Change	1.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$61.20M	$55.00M	$45.80M
YoY Change	11.27%
Accrued Expenses	$254.8M	$305.2M	$247.6M
YoY Change	-16.51%
Deferred Revenue		$473.4M
YoY Change		-10.53%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$25.30M	$81.90M	$78.30M
YoY Change	-69.11%
Total Short-Term Liabilities	$825.3M	$1.090B	$848.3M
YoY Change	-24.27%
LONG-TERM LIABILITIES
Long-Term Debt	$3.256B	$3.819B	$3.840B
YoY Change	-14.75%
Other Long-Term Liabilities	$436.7M	$137.7M	$332.2M
YoY Change	26.84%
Total Long-Term Liabilities	$3.693B	$3.957B	$4.172B
YoY Change	-11.31%
TOTAL LIABILITIES
Total Short-Term Liabilities	$825.3M	$1.090B	$848.3M
Total Long-Term Liabilities	$3.693B	$3.957B	$4.172B
Total Liabilities	$5.700B	$6.503B	$6.369B
YoY Change	-13.12%
SHAREHOLDERS EQUITY
Retained Earnings		-$573.5M
YoY Change
Common Stock		$0.00
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)		$0.00
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.519B	$1.520B	$2.797B
YoY Change
Total Liabilities & Shareholders Equity	$9.219B	$9.113B	$9.166B
YoY Change	1.17%

Cashflow Statement

Concept	2020	2019 Q4	2019 Q3
OPERATING ACTIVITIES
Net Income	-$111.6M	-$228.1M	-$55.30M
YoY Change	-79.84%	-389.83%
Depreciation, Depletion And Amortization	$537.8M	$152.9M	$112.2M
YoY Change	10.41%	585.65%	68.98%
Cash From Operating Activities	$205.5M	$3.700M	$68.00M
YoY Change	-391.49%	-95.34%	-72.36%
INVESTING ACTIVITIES
Capital Expenditures	$7.800M	-$25.10M	$2.100M
YoY Change	-37.1%	73.1%	-104.81%
Acquisitions	$20.60M
YoY Change	-99.66%
Other Investing Activities	-$2.100M	-$7.000M	-$128.4M
YoY Change	320.0%	100.0%	3466.67%
Cash From Investing Activities	-$133.8M	-$32.10M	-$144.5M
YoY Change	-97.83%	78.33%	205.5%
FINANCING ACTIVITIES
Cash Dividend Paid	$64.10M
YoY Change	-33.3%
Common Stock Issuance & Retirement, Net	$0.00
YoY Change	-100.0%
Debt Paid & Issued, Net	$580.0M
YoY Change
Cash From Financing Activities	$188.6M	43.90M	-32.90M
YoY Change	-97.02%	-122.56%	-92.07%
NET CHANGE
Cash From Operating Activities	$205.5M	3.700M	68.00M
Cash From Investing Activities	-$133.8M	-32.10M	-144.5M
Cash From Financing Activities	$188.6M	43.90M	-32.90M
Net Change In Cash	$267.9M	15.50M	-109.4M
YoY Change	217.42%	-111.64%	-49.45%
FREE CASH FLOW
Cash From Operating Activities	$205.5M	$3.700M	$68.00M
Capital Expenditures	$7.800M	-$25.10M	$2.100M
Free Cash Flow	$197.7M	$28.80M	$65.90M
YoY Change	-338.48%	-69.33%	-77.25%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001799208
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
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CY2020Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilitiesNoncurrent
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilitiesNoncurrent
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	us-gaap:OtherAssetsNoncurrent
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CY2020	dnb	Employee Stock Purchase Plan Offering Period EmployeeStockPurchasePlanOfferingPeriod	P6M
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	1-39361
CY2020	dei	Entity Registrant Name EntityRegistrantName	Dun & Bradstreet Holdings, Inc.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	83-2008699
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	101 JFK Parkway
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Short Hills
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	NJ
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	07078
CY2020	dei	City Area Code CityAreaCode	973
CY2020	dei	Local Phone Number LocalPhoneNumber	921-5500
CY2020	dei	Security12b Title Security12bTitle	Common Stock, $0.0001 par value
CY2020	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2020	dei	Trading Symbol TradingSymbol	DNB
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
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CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	3200000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1000000.0	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	5400000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-194000000.0	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-583500000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-4600000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	250800000	USD
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CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-1800000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-2600000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-900000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-1200000	USD
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CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-6100000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	22200000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	200000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-400000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-100000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	354500000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	98600000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11000000.0	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	7300000	USD
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CY2020Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	7600000	USD
CY2019Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	10000000.0	USD
CY2020Q4	us-gaap	Prepaid Taxes PrepaidTaxes	130300000	USD
CY2019Q4	us-gaap	Prepaid Taxes PrepaidTaxes	4000000.0	USD
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CY2019Q4	us-gaap	Other Prepaid Expense Current OtherPrepaidExpenseCurrent	31400000	USD
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CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	4600000	USD
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CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7500000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	26400000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29400000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	126000000.0	USD
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CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	379800000	USD
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CY2020Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	8345400000	USD
CY2019Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	8694900000	USD
CY2020Q4	us-gaap	Assets Assets	9219400000	USD
CY2019Q4	us-gaap	Assets Assets	9112800000	USD
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CY2020	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	99500000	USD
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CY2019Q1	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	33200000	USD
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CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	195600000	USD
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CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7700000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12500000	USD
CY2019Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	200000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5100000	USD
CY2020	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	113700000	USD
CY2019	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	56400000	USD
CY2019Q1	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	5100000	USD
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CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-600000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-200000	USD
CY2019Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-700000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-134300000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-6154600000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-5300000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-65300000	USD
CY2020	dnb	Payments For Stock Plans Net PaymentsForStockPlansNet	0	USD
CY2019	dnb	Payments For Stock Plans Net PaymentsForStockPlansNet	0	USD
CY2019Q1	dnb	Payments For Stock Plans Net PaymentsForStockPlansNet	0	USD
CY2018	dnb	Payments For Stock Plans Net PaymentsForStockPlansNet	1400000	USD
CY2020	dnb	Proceeds From Payments For Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromPaymentsForIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	2248200000	USD
CY2019	dnb	Proceeds From Payments For Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromPaymentsForIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	0	USD
CY2019Q1	dnb	Proceeds From Payments For Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromPaymentsForIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	0	USD
CY2018	dnb	Proceeds From Payments For Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromPaymentsForIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	3176800000	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2020	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	1067900000	USD
CY2019	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	USD
CY2019Q1	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	USD
CY2020	dnb	Payment Of Make Whole Liability PaymentOfMakeWholeLiability	205200000	USD
CY2019	dnb	Payment Of Make Whole Liability PaymentOfMakeWholeLiability	0	USD
CY2019Q1	dnb	Payment Of Make Whole Liability PaymentOfMakeWholeLiability	0	USD
CY2018	dnb	Payment Of Make Whole Liability PaymentOfMakeWholeLiability	0	USD
CY2020	dnb	Payments For Early Redemption Premiums Of Debt PaymentsForEarlyRedemptionPremiumsOfDebt	50100000	USD
CY2019	dnb	Payments For Early Redemption Premiums Of Debt PaymentsForEarlyRedemptionPremiumsOfDebt	0	USD
CY2019Q1	dnb	Payments For Early Redemption Premiums Of Debt PaymentsForEarlyRedemptionPremiumsOfDebt	0	USD
CY2018	dnb	Payments For Early Redemption Premiums Of Debt PaymentsForEarlyRedemptionPremiumsOfDebt	0	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	64100000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	96100000	USD
CY2019Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	58100000	USD
CY2020	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	1450000000.0	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2020	us-gaap	Early Repayment Of Senior Debt EarlyRepaymentOfSeniorDebt	0	USD
CY2019	us-gaap	Early Repayment Of Senior Debt EarlyRepaymentOfSeniorDebt	625100000	USD
CY2019Q1	us-gaap	Early Repayment Of Senior Debt EarlyRepaymentOfSeniorDebt	0	USD
CY2018	us-gaap	Early Repayment Of Senior Debt EarlyRepaymentOfSeniorDebt	0	USD
CY2020	dnb	Repayments Of Senior Debt Excluding Early Prepayment RepaymentsOfSeniorDebtExcludingEarlyPrepayment	580000000.0	USD
CY2019	dnb	Repayments Of Senior Debt Excluding Early Prepayment RepaymentsOfSeniorDebtExcludingEarlyPrepayment	0	USD
CY2019Q1	dnb	Repayments Of Senior Debt Excluding Early Prepayment RepaymentsOfSeniorDebtExcludingEarlyPrepayment	0	USD
CY2018	dnb	Repayments Of Senior Debt Excluding Early Prepayment RepaymentsOfSeniorDebtExcludingEarlyPrepayment	0	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2500000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	122600000	USD
CY2019Q1	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3600000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-7100000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3600000	USD
CY2019Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-100000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3500000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	189300000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	6321800000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	96900000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-609700000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5300000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-5600000	USD
CY2019Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1200000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2600000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	255900000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	98600000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	27400000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-352200000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	98600000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	90200000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	354500000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	98600000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	117600000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	90200000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	120900000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	29300000	USD
CY2019Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3400000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	55100000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	249000000.0	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	232400000	USD
CY2019Q1	us-gaap	Interest Paid Net InterestPaidNet	2400000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	53800000	USD
CY2020	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	23200000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	21800000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	23200000	USD
CY2020	dnb	Payments For Underwriting Expense And Stock Issuance Costs PaymentsForUnderwritingExpenseAndStockIssuanceCosts	132800000	USD
CY2020Q3	dnb	Payments For Underwriting Expense And Stock Issuance Costs PaymentsForUnderwritingExpenseAndStockIssuanceCosts	131900000	USD
CY2020Q3	dnb	Payments For Underwriting Expense And Stock Issuance Costs PaymentsForUnderwritingExpenseAndStockIssuanceCosts	900000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	294300000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5500000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10000000.0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-5500000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	19600000	USD
CY2018	us-gaap	Dividends Dividends	58300000	USD
CY2018	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple	-25700000	USD
CY2019	dnb	Take Private Transaction TakePrivateTransaction	2108700000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-2600000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-18200000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-100000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-300000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	-74800000	USD
CY2019Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	100000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11700000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-22200000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-65400000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	100000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	5900000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-100000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-100000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-681900000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-13500000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-553500000	USD
CY2019	dnb	Adjustments To Additional Paid In Capital Capital Contributions AdjustmentsToAdditionalPaidInCapitalCapitalContributions	100000000.0	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	68000000.0	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	96100000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	3400000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5700000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	5400000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	15800000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-1800000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-9900000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-400000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-1100000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1577700000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1577700000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-106500000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	36100000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2248200000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	45300000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	34800000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	106500000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	3000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	26400000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	200000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	700000	USD
CY2020	us-gaap	Dividends Preferred Stock DividendsPreferredStock	64100000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	7400000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3577700000	USD
CY2020	dnb	Conversion Of Pre Ipo Liability Classified As Equity Based Awards To Restricted Stock Units ConversionOfPreIPOLiabilityClassifiedAsEquityBasedAwardsToRestrictedStockUnits	200000	USD
CY2020Q3	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	108506312	shares
CY2020Q3	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	2381000000.0	USD
CY2018Q3	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	1028400000	USD
CY2018Q3	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	21600000	USD
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	Where appropriate, we have reclassified certain prior year amounts to conform to the current year presentation
CY2020	us-gaap	Use Of Estimates UseOfEstimates	.
CY2020	dnb	Initial Term Of Long Term Performance Obligation InitialTermOfLongTermPerformanceObligation	P10Y
CY2020	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2019	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2018	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2019Q1	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-7500000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-15800000	USD
CY2019Q1	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-800000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-2200000	USD
CY2019Q1	dnb	Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Total Units Issued During Fiscal Year That Are Granted ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfTotalUnitsIssuedDuringFiscalYearThatAreGranted	0.94
CY2020Q3	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	108506312	shares
CY2020Q3	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	2381000000.0	USD
CY2020Q3	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2381000000.0	USD
CY2020Q3	us-gaap	Payments For Underwriting Expense PaymentsForUnderwritingExpense	89100000	USD
CY2020Q3	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	42800000	USD
CY2020Q3	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	1067900000	USD
CY2020Q3	dnb	Make Whole Payment On Redemption Of Preferred Stock MakeWholePaymentOnRedemptionOfPreferredStock	205200000	USD
CY2020Q3	dnb	Sale Of Stock Consideration Received On Transaction Cash To Balance Sheet SaleOfStockConsiderationReceivedOnTransactionCashToBalanceSheet	331700000	USD
CY2020Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2020Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2020Q2	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	314494.968
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1138200000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	534200000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	261100000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	94600000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	66200000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	134800000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	2229100000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	313700000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	269300000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	270800000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	1400000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	1000000.0	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	1300000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	3800000	USD
CY2019Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	2800000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	2600000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	467200000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	467500000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	529100000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	16300000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	7800000	USD
CY2018Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	7300000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	8200000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	472500000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	1400000	USD
CY2020	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	3200000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-61100000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	390100000	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	83600000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	47000000.0	USD
CY2020	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	17000000.0	USD
CY2019	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	4700000	USD
CY2019Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	3200000	USD
CY2018	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	26900000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	34800000	USD
CY2020	us-gaap	Severance Costs1 SeveranceCosts1	9900000	USD
CY2020	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	165	employee
CY2020	us-gaap	Business Exit Costs1 BusinessExitCosts1	24900000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	51800000	USD
CY2019Q1	us-gaap	Restructuring Charges RestructuringCharges	100000	USD
CY2019	us-gaap	Severance Costs1 SeveranceCosts1	36600000	USD
CY2019Q1	us-gaap	Severance Costs1 SeveranceCosts1	100000	USD
CY2019	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	540	employee
CY2019	us-gaap	Business Exit Costs1 BusinessExitCosts1	15200000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	25400000	USD
CY2018	us-gaap	Severance Costs1 SeveranceCosts1	22300000	USD
CY2018	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	390	employee
CY2018	us-gaap	Business Exit Costs1 BusinessExitCosts1	3100000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	16200000	USD
CY2018	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	25400000	USD
CY2018	dnb	Payments For Restructuring And Other Adjustments PaymentsForRestructuringAndOtherAdjustments	34000000.0	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	7600000	USD
CY2019Q1	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	100000	USD
CY2019Q1	us-gaap	Payments For Restructuring PaymentsForRestructuring	2100000	USD
CY2019Q1	us-gaap	Restructuring Reserve Translation And Other Adjustment RestructuringReserveTranslationAndOtherAdjustment	-2400000	USD
CY2019Q1	us-gaap	Restructuring Reserve RestructuringReserve	3200000	USD
CY2019	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	3200000	USD
CY2019	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	48800000	USD
CY2019	dnb	Payments For Restructuring And Other Adjustments PaymentsForRestructuringAndOtherAdjustments	40900000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	11100000	USD
CY2020	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	15800000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	17000000.0	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	9900000	USD
CY2020Q4	dnb	Long Term Debt Current Maturities Gross LongTermDebtCurrentMaturitiesGross	25300000	USD
CY2020Q4	dnb	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Current DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetCurrent	0	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	25300000	USD
CY2019Q4	dnb	Debt Instrument Short Term And Current Maturities Gross DebtInstrumentShortTermAndCurrentMaturitiesGross	82000000.0	USD
CY2019Q4	dnb	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Current DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetCurrent	100000	USD
CY2019Q4	us-gaap	Debt Current DebtCurrent	81900000	USD
CY2020Q4	dnb	Long Term Debt Excluding Current Maturities Gross LongTermDebtExcludingCurrentMaturitiesGross	3355700000	USD
CY2020Q4	dnb	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Noncurrent DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetNoncurrent	99900000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3255800000	USD
CY2019Q4	dnb	Long Term Debt Excluding Current Maturities Gross LongTermDebtExcludingCurrentMaturitiesGross	3961000000.0	USD
CY2019Q4	dnb	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Noncurrent DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetNoncurrent	142100000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3818900000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3381000000.0	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	99900000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	3281100000	USD
CY2019Q4	dnb	Debt Long Term And Short Term Combined Amount Gross DebtLongTermAndShortTermCombinedAmountGross	4043000000.0	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	142200000	USD
CY2019Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	3900800000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	28300000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	28300000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	28300000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	28300000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	28300000	USD
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	3539500000	USD
CY2020Q4	dnb	Long Term Debt Gross Including Subsequent Events LongTermDebtGrossIncludingSubsequentEvents	3681000000.0	USD
CY2020Q4	dnb	Long Term Debt Future Interest Payments Due Year One LongTermDebtFutureInterestPaymentsDueYearOne	181100000	USD
CY2020Q4	dnb	Long Term Debt Future Interest Payments Due Year Two LongTermDebtFutureInterestPaymentsDueYearTwo	183000000.0	USD
CY2020Q4	dnb	Long Term Debt Future Interest Payments Due Year Three LongTermDebtFutureInterestPaymentsDueYearThree	181900000	USD
CY2020Q4	dnb	Long Term Debt Future Interest Payments Due Year Four LongTermDebtFutureInterestPaymentsDueYearFour	180700000	USD
CY2020Q4	dnb	Long Term Debt Future Interest Payments Due Year Five LongTermDebtFutureInterestPaymentsDueYearFive	179600000	USD
CY2020Q4	dnb	Long Term Debt Future Interest Payments Due After Year Five LongTermDebtFutureInterestPaymentsDueAfterYearFive	109000000.0	USD
CY2020Q4	dnb	Long Term Debt Future Interest Payments Due LongTermDebtFutureInterestPaymentsDue	1015300000	USD
CY2020Q4	dnb	Long Term Debt Maturity And Future Interest Payments Due Year One LongTermDebtMaturityAndFutureInterestPaymentsDueYearOne	209400000	USD
CY2020Q4	dnb	Long Term Debt Maturity And Future Interest Payments Due Year Two LongTermDebtMaturityAndFutureInterestPaymentsDueYearTwo	211300000	USD
CY2020Q4	dnb	Long Term Debt Maturity And Future Interest Payments Due Year Three LongTermDebtMaturityAndFutureInterestPaymentsDueYearThree	210200000	USD
CY2020Q4	dnb	Long Term Debt Maturity And Future Interest Payments Due Year Four LongTermDebtMaturityAndFutureInterestPaymentsDueYearFour	209000000.0	USD
CY2020Q4	dnb	Long Term Debt Maturity And Future Interest Payments Due Year Five LongTermDebtMaturityAndFutureInterestPaymentsDueYearFive	207900000	USD
CY2020Q4	dnb	Long Term Debt Maturity And Future Interest Payments Due After Year Five LongTermDebtMaturityAndFutureInterestPaymentsDueAfterYearFive	3648500000	USD
CY2020Q4	dnb	Long Term Debt And Future Interest Payments Due LongTermDebtAndFutureInterestPaymentsDue	4696300000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	72900000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	87900000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	23300000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	22400000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	68400000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	71200000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	91700000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	93600000	USD
CY2020	dnb	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	12900000	USD
CY2020	dnb	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	12900000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	27500000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	24600000	USD
CY2019Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	2800000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	3600000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	3900000	USD
CY2019Q1	us-gaap	Variable Lease Cost VariableLeaseCost	1000000.0	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	400000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	200000	USD
CY2019Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	800000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	700000	USD
CY2019Q1	us-gaap	Sublease Income SubleaseIncome	100000	USD
CY2020	us-gaap	Lease Cost LeaseCost	30700000	USD
CY2019	us-gaap	Lease Cost LeaseCost	28000000.0	USD
CY2019Q1	us-gaap	Lease Cost LeaseCost	3700000	USD
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	14800000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	28100000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	23700000	USD
CY2019Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	5900000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	32900000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	27700000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	24000000.0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	15300000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	10900000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	9500000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	17500000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	104900000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	13200000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	91700000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.055
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.059
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-398100000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-811500000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-131700000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	229800000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	178800000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	135600000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	28900000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	143300000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-219300000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-675900000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-102800000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	373100000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-28800000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-300000	USD
CY2019Q1	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-11100000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-5700000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7400000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1600000	USD
CY2019Q1	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-3400000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1000000.0	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	28600000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	15800000	USD
CY2019Q1	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	4800000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	23500000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7200000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	17100000	USD
CY2019Q1	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-9700000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	18800000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-100700000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-109800000	USD
CY2019Q1	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-14800000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	54200000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-16900000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-23500000	USD
CY2019Q1	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3000000.0	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	9800000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-100000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-2000000.0	USD
CY2019Q1	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1200000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-117700000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-135300000	USD
CY2019Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-17800000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	62800000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-110500000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-118200000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-27500000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81600000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.058
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.034
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.070
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.029
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.012
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.037
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.014
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.007
CY2020	dnb	Effective Income Tax Rate Reconciliation Change In Fair Value Of Make Whole Derivative Liability Percent EffectiveIncomeTaxRateReconciliationChangeInFairValueOfMakeWholeDerivativeLiabilityPercent	0.031
CY2019	dnb	Effective Income Tax Rate Reconciliation Change In Fair Value Of Make Whole Derivative Liability Percent EffectiveIncomeTaxRateReconciliationChangeInFairValueOfMakeWholeDerivativeLiabilityPercent	0.054
CY2019Q1	dnb	Effective Income Tax Rate Reconciliation Change In Fair Value Of Make Whole Derivative Liability Percent EffectiveIncomeTaxRateReconciliationChangeInFairValueOfMakeWholeDerivativeLiabilityPercent	0
CY2018	dnb	Effective Income Tax Rate Reconciliation Change In Fair Value Of Make Whole Derivative Liability Percent EffectiveIncomeTaxRateReconciliationChangeInFairValueOfMakeWholeDerivativeLiabilityPercent	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.010
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.004
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.002
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.008
CY2020	dnb	Effective Income Tax Rate Reconciliation Foreign Taxes Percent EffectiveIncomeTaxRateReconciliationForeignTaxesPercent	0.038
CY2019	dnb	Effective Income Tax Rate Reconciliation Foreign Taxes Percent EffectiveIncomeTaxRateReconciliationForeignTaxesPercent	0.015
CY2019Q1	dnb	Effective Income Tax Rate Reconciliation Foreign Taxes Percent EffectiveIncomeTaxRateReconciliationForeignTaxesPercent	0.012
CY2018	dnb	Effective Income Tax Rate Reconciliation Foreign Taxes Percent EffectiveIncomeTaxRateReconciliationForeignTaxesPercent	-0.011
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.002
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.040
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.001
CY2020	dnb	Effective Income Tax Rate Reconciliation Transaction Costs Percent EffectiveIncomeTaxRateReconciliationTransactionCostsPercent	0
CY2019	dnb	Effective Income Tax Rate Reconciliation Transaction Costs Percent EffectiveIncomeTaxRateReconciliationTransactionCostsPercent	0
CY2019Q1	dnb	Effective Income Tax Rate Reconciliation Transaction Costs Percent EffectiveIncomeTaxRateReconciliationTransactionCostsPercent	0.068
CY2018	dnb	Effective Income Tax Rate Reconciliation Transaction Costs Percent EffectiveIncomeTaxRateReconciliationTransactionCostsPercent	0
CY2020	dnb	Effective Income Tax Rate Reconciliation Interest Percent EffectiveIncomeTaxRateReconciliationInterestPercent	0.002
CY2019	dnb	Effective Income Tax Rate Reconciliation Interest Percent EffectiveIncomeTaxRateReconciliationInterestPercent	0.001
CY2019Q1	dnb	Effective Income Tax Rate Reconciliation Interest Percent EffectiveIncomeTaxRateReconciliationInterestPercent	0
CY2018	dnb	Effective Income Tax Rate Reconciliation Interest Percent EffectiveIncomeTaxRateReconciliationInterestPercent	-0.001
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.069
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.017
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.005
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.027
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.038
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.008
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.004
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.082
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	-0.002
CY2020	dnb	Effective Income Tax Rate Reconciliation Change In Accounting Method Percent EffectiveIncomeTaxRateReconciliationChangeInAccountingMethodPercent	0
CY2019	dnb	Effective Income Tax Rate Reconciliation Change In Accounting Method Percent EffectiveIncomeTaxRateReconciliationChangeInAccountingMethodPercent	0
CY2019Q1	dnb	Effective Income Tax Rate Reconciliation Change In Accounting Method Percent EffectiveIncomeTaxRateReconciliationChangeInAccountingMethodPercent	0
CY2018	dnb	Effective Income Tax Rate Reconciliation Change In Accounting Method Percent EffectiveIncomeTaxRateReconciliationChangeInAccountingMethodPercent	0.036
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.085
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-0.044
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0
CY2020	dnb	Effective Income Tax Rate Reconciliation Cares Act Percent EffectiveIncomeTaxRateReconciliationCARESActPercent	0.264
CY2019	dnb	Effective Income Tax Rate Reconciliation Cares Act Percent EffectiveIncomeTaxRateReconciliationCARESActPercent	0
CY2019Q1	dnb	Effective Income Tax Rate Reconciliation Cares Act Percent EffectiveIncomeTaxRateReconciliationCARESActPercent	0
CY2018	dnb	Effective Income Tax Rate Reconciliation Cares Act Percent EffectiveIncomeTaxRateReconciliationCARESActPercent	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.015
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003
CY2019Q1	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.504
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CY2019Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.267
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.219
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	122100000	USD
CY2019Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	3300000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	29900000	USD
CY2019Q4	dnb	Deferred Tax Assets Tax Credit Carryforwards And Capital Loss Carryforwards DeferredTaxAssetsTaxCreditCarryforwardsAndCapitalLossCarryforwards	11500000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	0	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	57400000	USD
CY2020	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	1200000	USD
CY2019Q1	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	100000	USD
CY2019	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	500000	USD
CY2018	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	2300000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	63200000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	68400000	USD
CY2020Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	93500000	USD
CY2019Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	62300000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	2300000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	3900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	4900000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	3900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	9000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	21000000.0	USD
CY2020Q4	dnb	Deferred Tax Assets Tax Credit Carryforwards And Capital Loss Carryforwards DeferredTaxAssetsTaxCreditCarryforwardsAndCapitalLossCarryforwards	13800000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	2400000	USD
CY2020Q4	dnb	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	71200000	USD
CY2019Q4	dnb	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	49900000	USD
CY2020Q4	dnb	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	17600000	USD
CY2019Q4	dnb	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	17100000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	5000000.0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	284500000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	245400000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	35800000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	33100000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	248700000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	212300000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1318200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1408300000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Unrealized Currency Transaction Gains DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains	6300000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Unrealized Currency Transaction Gains DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	4100000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	15200000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	20500000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	300000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1339700000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1433200000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1091000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1220900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	63200000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	63200000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Not Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration	28300000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	34900000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7700000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1700000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	900000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1800000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3100000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5400000	USD
CY2019Q1	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	8900000	USD
CY2019Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14300000	USD
CY2019	dnb	Unrecognized Tax Benefits Increase Resulting From Impact Of Purchase Accounting UnrecognizedTaxBenefitsIncreaseResultingFromImpactOfPurchaseAccounting	14300000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5300000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1600000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	100000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	800000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17100000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2300000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	300000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	800000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	18900000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	18900000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	18300000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	600000	USD
CY2019Q1	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	100000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	300000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	200000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	700000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	300000	USD
CY2020	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Discount Rate DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInDiscountRate	-167000000	USD
CY2020	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Assumed Cash Balance Conversion Interest Rates And Cash Balance Interest Crediting Rate DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInAssumedCashBalanceConversionInterestRatesAndCashBalanceInterestCreditingRate	12000000	USD
CY2020	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Mortality Improvement Scale DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInMortalityImprovementScale	11000000	USD
CY2019	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Discount Rate DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInDiscountRate	-151000000	USD
CY2019	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Mortality Improvement Scale DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInMortalityImprovementScale	43000000	USD
CY2019	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Assumed Cash Balance Conversion Interest Rates And Cash Balance Interest Crediting Rate DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInAssumedCashBalanceConversionInterestRatesAndCashBalanceInterestCreditingRate	19000000	USD
CY2019	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Assumed Benefit Commencement Rates For Terminated Vested Participants DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInAssumedBenefitCommencementRatesForTerminatedVestedParticipants	-17000000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-6100000	USD
CY2019Q1	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Discount Rate DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInDiscountRate	-53000000	USD
CY2019Q1	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Assumption Changes In Control Provision DefinedBenefitPlanBenefitObligationActuarialGainLossAssumptionChangesInControlProvision	-22000000	USD
CY2019Q1	dnb	Defined Benefit Plan Benefit Obligation Actuarial Gain Loss Change In Assumed Cash Balance Conversion Interest Rates And Cash Balance Interest Crediting Rate DefinedBenefitPlanBenefitObligationActuarialGainLossChangeInAssumedCashBalanceConversionInterestRatesAndCashBalanceInterestCreditingRate	10000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	1852300000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	1437900000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	1572200000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	1240000000.0	USD
CY2020Q4	dnb	Defined Benefit Plan Plan With Accumulated Benefit Obligation In Excess Of Plan Assets Unfunded Accumulated Benefit Obligation DefinedBenefitPlanPlanWithAccumulatedBenefitObligationInExcessOfPlanAssetsUnfundedAccumulatedBenefitObligation	280100000	USD
CY2019Q4	dnb	Defined Benefit Plan Plan With Accumulated Benefit Obligation In Excess Of Plan Assets Unfunded Accumulated Benefit Obligation DefinedBenefitPlanPlanWithAccumulatedBenefitObligationInExcessOfPlanAssetsUnfundedAccumulatedBenefitObligation	197900000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	1858200000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	1439500000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-34600000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-15700000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	100000	USD
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CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-1200000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	22200000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	9000000.0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-100000	USD
CY2020	dnb	Market Related Value Of Assets Short Term Fluctuation In Fair Value Recognition Period MarketRelatedValueOfAssetsShortTermFluctuationInFairValueRecognitionPeriod	P5Y
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	1604200000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	1572900000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2019Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2020Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2019Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2020	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.50
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.07
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	10600000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	9400000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	1200000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	11000000.0	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	45100000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11700000	USD
CY2019Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11700000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10800000	USD
CY2019Q1	dnb	Stock Repurchased And Retired During Period Cash Value Per Share StockRepurchasedAndRetiredDuringPeriodCashValuePerShare	145
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	10400000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	56300000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6400000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	USD
CY2019Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2300000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	40000000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	31647101	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	22200000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
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CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue		USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	8000000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	22.00
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	350000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	22.00
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CY2020	dnb	Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageExercisePrice	0
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7650000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.00
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y6M
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	3490000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	22.00
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P6Y6M
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	10100000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4160000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	22.00
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P6Y6M
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	12100000	USD
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	15100000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y6M
CY2020	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	0	shares
CY2019Q1	dnb	Stock Repurchased And Retired During Period Cash Value Per Share StockRepurchasedAndRetiredDuringPeriodCashValuePerShare	145
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	55174	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	84.15
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y2M12D
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3200000	USD
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
CY2019Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2019Q1	dnb	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue	0
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2019Q1	dnb	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Exercises In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExercisesInPeriodWeightedAverageGrantDateFairValue	0
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	55174	shares
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	84.15
CY2019Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y1M6D
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3400000	USD
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	55174	shares
CY2019Q1	dnb	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageGrantDateFairValue	84.15
CY2019Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y1M6D
CY2019Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	3400000	USD
CY2019Q1	dnb	Stock Repurchased And Retired During Period Cash Value Per Share StockRepurchasedAndRetiredDuringPeriodCashValuePerShare	145
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	600000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	700000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	100000	USD
CY2018Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	0	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.15
CY2018	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	53785	shares
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	5300000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-175600000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-674000000.0	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-75600000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	288100000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	367100000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	314500000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	37200000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	37100000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	367100000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	314500000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37200000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37300000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.48
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.14
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.04
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.76
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.48
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.14
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.04
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.72
CY2018Q4	dnb	Common Stock Shares Issued And Outstanding CommonStockSharesIssuedAndOutstanding	314494968	shares
CY2019	dnb	Stock Issued During Period Shares StockIssuedDuringPeriodShares	0	shares
CY2019Q4	dnb	Common Stock Shares Issued And Outstanding CommonStockSharesIssuedAndOutstanding	314494968	shares
CY2020	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	108506312	shares
CY2020	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	416851	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	423418131	shares
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	2000000.0	USD
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	465903	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	422952228	shares
CY2020	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	18500000	USD
CY2020	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	11500000	USD
CY2019	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	16500000	USD
CY2019	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	24400000	USD
CY2018	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	17000000.0	USD
CY2018	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	24000000.0	USD
CY2020Q4	dnb	Accumulated Unrealized Gain On Foreign Currency Derivatives Before Tax AccumulatedUnrealizedGainOnForeignCurrencyDerivativesBeforeTax	2500000	USD
CY2020Q4	dnb	Accumulated Unrealized Loss On Foreign Currency Derivatives Before Tax AccumulatedUnrealizedLossOnForeignCurrencyDerivativesBeforeTax	1000000.0	USD
CY2019Q4	dnb	Accumulated Unrealized Gain On Foreign Currency Derivatives Before Tax AccumulatedUnrealizedGainOnForeignCurrencyDerivativesBeforeTax	1600000	USD
CY2019Q4	dnb	Accumulated Unrealized Loss On Foreign Currency Derivatives Before Tax AccumulatedUnrealizedLossOnForeignCurrencyDerivativesBeforeTax	2600000	USD
CY2018Q4	dnb	Accumulated Unrealized Gain On Foreign Currency Derivatives Before Tax AccumulatedUnrealizedGainOnForeignCurrencyDerivativesBeforeTax	900000	USD
CY2018Q4	dnb	Accumulated Unrealized Loss On Foreign Currency Derivatives Before Tax AccumulatedUnrealizedLossOnForeignCurrencyDerivativesBeforeTax	500000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	26000000.0	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	1600000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	176900000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	212300000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	4100000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	68200000	USD
CY2019Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-2800000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-24000000.0	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-500000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-84300000	USD
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-1800000	USD
CY2019Q1	dnb	Stock Repurchased And Retired During Period Cash Value Per Share StockRepurchasedAndRetiredDuringPeriodCashValuePerShare	145.00
CY2019Q1	dnb	Stock Repurchased And Retired During Period Cash Value Per Share StockRepurchasedAndRetiredDuringPeriodCashValuePerShare	145.00
CY2019	dnb	Business Acquisition Pro Forma Blended Federal Statutory Tax Rate Assumed Percent BusinessAcquisitionProFormaBlendedFederalStatutoryTaxRateAssumedPercent	0.223
CY2020Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	200000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1413900000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	178700000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1716400000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1427400000	USD
CY2019Q1	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	181600000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1736700000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-674000000.0	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-75600000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	288100000	USD
CY2019Q4	dnb	Property Plant And Equipment Net Less Leasehold Improvements PropertyPlantAndEquipmentNetLessLeaseholdImprovements	18000000.0	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	26400000	USD
CY2019	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	-692900000	USD
CY2019Q1	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	-77000000.0	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	267400000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	72900000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	87900000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	4300000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	9900000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	27000000.0	USD
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	23700000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	16300000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	13100000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	120500000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	134600000	USD
CY2020Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	9900000	USD
CY2019Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	11100000	USD
CY2020Q4	dnb	Accrued Operating Expenses Current AccruedOperatingExpensesCurrent	76500000	USD
CY2019Q4	dnb	Accrued Operating Expenses Current AccruedOperatingExpensesCurrent	58700000	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	29000000.0	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	49300000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	23300000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	22400000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	21600000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	25800000	USD
CY2020Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	160300000	USD
CY2019Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	167300000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29400000	USD
CY2020	us-gaap	Depreciation Depreciation	9400000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	16300000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	7800000	USD
CY2020Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Liability Noncurrent TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsLiabilityNoncurrent	49800000	USD
CY2019Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Liability Noncurrent TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsLiabilityNoncurrent	55000000.0	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	68400000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	71200000	USD
CY2020Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	8700000	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	3700000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	143200000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	137700000	USD
CY2020Q4	dnb	Property Plant And Equipment Net Less Leasehold Improvements PropertyPlantAndEquipmentNetLessLeaseholdImprovements	15100000	USD
CY2019	us-gaap	Depreciation Depreciation	8200000	USD
CY2019Q1	us-gaap	Depreciation Depreciation	1100000	USD
CY2018	us-gaap	Depreciation Depreciation	10900000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	3600000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	3600000	USD
CY2018Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	133800000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	770800000	USD
CY2019Q1	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	5000000.0	USD
CY2019Q1	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	6800000	USD
CY2019Q1	dnb	Capitalized Computer Software Other Increase Decrease CapitalizedComputerSoftwareOtherIncreaseDecrease	100000	USD
CY2019Q1	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	2700000	USD
CY2019Q1	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	132100000	USD
CY2019Q1	us-gaap	Goodwill Goodwill	773500000	USD
CY2019	dnb	Capitalized Computer Software Acquisitions CapitalizedComputerSoftwareAcquisitions	376000000.0	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2842800000	USD
CY2019	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	56400000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	48400000	USD
CY2019	dnb	Capitalized Computer Software Other Increase Decrease CapitalizedComputerSoftwareOtherIncreaseDecrease	-4200000	USD
CY2019	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-2700000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	379800000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	2840100000	USD
CY2020	dnb	Capitalized Computer Software Acquisitions CapitalizedComputerSoftwareAcquisitions	0	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	10900000	USD
CY2020	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	113100000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	70800000	USD
CY2020	us-gaap	Capitalized Computer Software Impairments1 CapitalizedComputerSoftwareImpairments1	1000000.0	USD
CY2020	dnb	Capitalized Computer Software Other Increase Decrease CapitalizedComputerSoftwareOtherIncreaseDecrease	11600000	USD
CY2020	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	5200000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	432700000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	2856200000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	44900000	USD
CY2018Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	158400000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	284100000	USD
CY2019Q1	dnb	Finite Lived Intangible Assets Net Additions FiniteLivedIntangibleAssetsNetAdditions	100000	USD
CY2019Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3200000	USD
CY2019Q1	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	100000	USD
CY2019Q1	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	158400000	USD
CY2019Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	281100000	USD
CY2019	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	1275800000	USD
CY2019	dnb	Intangible Assets Net Excluding Goodwill Acquisitions IntangibleAssetsNetExcludingGoodwillAcquisitions	5678500000	USD
CY2019	dnb	Finite Lived Intangible Assets Net Additions FiniteLivedIntangibleAssetsNetAdditions	600000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	425800000	USD
CY2019	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	-1900000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	1275800000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	5251400000	USD
CY2020	dnb	Intangible Assets Net Excluding Goodwill Acquisitions IntangibleAssetsNetExcludingGoodwillAcquisitions	9200000	USD
CY2020	dnb	Finite Lived Intangible Assets Net Additions FiniteLivedIntangibleAssetsNetAdditions	600000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	456700000	USD
CY2020	us-gaap	Finite Lived Intangible Assets Foreign Currency Translation Gain Loss FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss	7500000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	1275800000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4812000000.0	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	531200000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	494900000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	458700000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	404100000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	368700000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	1711300000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3968900000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	2300000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	24200000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6700000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	9100000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	2700000	USD
CY2018	dnb	Accounts Receivable Allowance For Credit Loss Other Increase Decrease AccountsReceivableAllowanceForCreditLossOtherIncreaseDecrease	-10400000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	14100000	USD
CY2019Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	700000	USD
CY2019Q1	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	600000	USD
CY2019Q1	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	200000	USD
CY2019Q1	dnb	Accounts Receivable Allowance For Credit Loss Other Increase Decrease AccountsReceivableAllowanceForCreditLossOtherIncreaseDecrease	200000	USD
CY2019Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	14600000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	5200000	USD
CY2019	dnb	Accounts Receivable Allowance For Credit Loss Other Increase Decrease AccountsReceivableAllowanceForCreditLossOtherIncreaseDecrease	-200000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	7300000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	7800000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	5700000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	1700000	USD
CY2020	dnb	Accounts Receivable Allowance For Credit Loss Other Increase Decrease AccountsReceivableAllowanceForCreditLossOtherIncreaseDecrease	-100000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	11000000.0	USD
CY2020	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-45900000	USD
CY2019	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-35900000	USD
CY2019Q1	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	85700000	USD
CY2018	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	2400000	USD
CY2020	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-32800000	USD
CY2019	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-172400000	USD
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CY2020	dnb	Debt Prepayment Costs DebtPrepaymentCosts	50100000	USD
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CY2018	dnb	Debt Prepayment Costs DebtPrepaymentCosts	0	USD
CY2020	dnb	Other Nonoperating Income Expense Miscellaneous OtherNonoperatingIncomeExpenseMiscellaneous	25000000.0	USD
CY2019	dnb	Other Nonoperating Income Expense Miscellaneous OtherNonoperatingIncomeExpenseMiscellaneous	-18300000	USD
CY2019Q1	dnb	Other Nonoperating Income Expense Miscellaneous OtherNonoperatingIncomeExpenseMiscellaneous	-300000	USD
CY2018	dnb	Other Nonoperating Income Expense Miscellaneous OtherNonoperatingIncomeExpenseMiscellaneous	-900000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-12000000.0	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-154800000	USD
CY2019Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-86000000.0	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3300000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-85800000	USD
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1738100000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1413900000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	178700000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1716400000	USD
CY2020	dnb	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	715400000	USD
CY2019	dnb	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	502100000	USD
CY2019Q1	dnb	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	66300000	USD
CY2018	dnb	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	568600000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	536900000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	482400000	USD
CY2019Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	11100000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	88700000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-270300000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-301100000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-5200000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-52500000	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	64100000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	114000000.0	USD
CY2019Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-110500000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-118200000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-27500000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81600000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-12000000.0	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-154800000	USD
CY2019Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-86000000.0	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3300000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2300000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4200000	USD
CY2019Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	500000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2800000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5000000.0	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6500000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	800000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6200000	USD
CY2020	dnb	Lag Adjustment LagAdjustment	0	USD
CY2019	dnb	Lag Adjustment LagAdjustment	0	USD
CY2019Q1	dnb	Lag Adjustment LagAdjustment	2700000	USD
CY2018	dnb	Lag Adjustment LagAdjustment	0	USD
CY2020	dnb	Purchase Accounting Adjustments Other PurchaseAccountingAdjustmentsOther	18800000	USD
CY2019	dnb	Purchase Accounting Adjustments Other PurchaseAccountingAdjustmentsOther	20700000	USD
CY2019Q1	dnb	Purchase Accounting Adjustments Other PurchaseAccountingAdjustmentsOther	0	USD
CY2018	dnb	Purchase Accounting Adjustments Other PurchaseAccountingAdjustmentsOther	0	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	45100000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11700000	USD
CY2019Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11700000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10800000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	34800000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	51800000	USD
CY2019Q1	us-gaap	Restructuring Charges RestructuringCharges	100000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	25400000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	14100000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	156000000.0	USD
CY2019Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	52000000.0	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	11600000	USD
CY2020	dnb	Transition Costs TransitionCosts	31900000	USD
CY2019	dnb	Transition Costs TransitionCosts	37700000	USD
CY2019Q1	dnb	Transition Costs TransitionCosts	300000	USD
CY2018	dnb	Transition Costs TransitionCosts	300000	USD
CY2020	dnb	Adjustment To Legal Reserve AdjustmentToLegalReserve	-3900000	USD
CY2019	dnb	Adjustment To Legal Reserve AdjustmentToLegalReserve	200000	USD
CY2019Q1	dnb	Adjustment To Legal Reserve AdjustmentToLegalReserve	0	USD
CY2018	dnb	Adjustment To Legal Reserve AdjustmentToLegalReserve	-2900000	USD
CY2020	dnb	Asset Impairment Charges Including Non Cash Charges AssetImpairmentChargesIncludingNonCashCharges	4500000	USD
CY2019	dnb	Asset Impairment Charges Including Non Cash Charges AssetImpairmentChargesIncludingNonCashCharges	3400000	USD
CY2019Q1	dnb	Asset Impairment Charges Including Non Cash Charges AssetImpairmentChargesIncludingNonCashCharges	0	USD
CY2018	dnb	Asset Impairment Charges Including Non Cash Charges AssetImpairmentChargesIncludingNonCashCharges	0	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-175600000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-674000000.0	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-75600000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	288100000	USD
CY2020	dnb	Contract With Customer Liability Purchase Accounting Adjustments ContractWithCustomerLiabilityPurchaseAccountingAdjustments	21100000	USD
CY2019	dnb	Contract With Customer Liability Purchase Accounting Adjustments ContractWithCustomerLiabilityPurchaseAccountingAdjustments	138900000	USD
CY2019Q1	dnb	Contract With Customer Liability Purchase Accounting Adjustments ContractWithCustomerLiabilityPurchaseAccountingAdjustments	-2700000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	536900000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	482400000	USD
CY2019Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	11100000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	88700000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7700000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12500000	USD
CY2019Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	200000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5100000	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	113700000	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	56400000	USD
CY2019Q1	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	5100000	USD
CY2018	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	53100000	USD
CY2020Q4	us-gaap	Assets Assets	9219400000	USD
CY2019Q4	us-gaap	Assets Assets	9112800000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	2856200000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	2840100000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4812000000.0	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	5251400000	USD
CY2020Q4	dnb	Long Lived Assets Other LongLivedAssetsOther	663200000	USD
CY2019Q4	dnb	Long Lived Assets Other LongLivedAssetsOther	590800000	USD
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	8331400000	USD
CY2019Q4	us-gaap	Noncurrent Assets NoncurrentAssets	8682300000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1738100000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1413900000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	178700000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1716400000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On First Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary	207700000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary	146600000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary	67100000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary	51200000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fifth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary	32900000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Due After Five Years UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears	60600000	USD
CY2020Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	566100000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	395300000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	420600000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	442100000	USD
CY2020Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	480100000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-8300000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-1400000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	45200000	USD
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	27500000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	73900000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	-173800000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	-14900000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	8300000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	400000	USD
CY2020Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1200000	USD
CY2020Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2100000	USD
CY2020Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1300000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	41500000	USD
CY2020Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-207100000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-17000000.0	USD
CY2020Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	7000000.0	USD
CY2020Q1	us-gaap	Contract With Customer Liability Cumulative Catch Up Adjustment To Revenue Change In Estimate Of Transaction Price ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice	17400000	USD
CY2020Q2	dnb	Debt Prepayment Costs DebtPrepaymentCosts	41300000	USD
CY2020Q3	dnb	Debt Prepayment Costs DebtPrepaymentCosts	25500000	USD
CY2020Q1	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	69800000	USD
CY2020Q2	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-102600000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	178700000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	174100000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	398900000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	408200000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	432700000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-11600000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-202900000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-9100000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-1000000.0	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-7000000.0	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	-74800000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	-209600000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	-60500000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	-55300000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	-228100000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	800000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	400000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1500000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1400000	USD
CY2019Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3200000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-75600000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-227900000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-94000000.0	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-88800000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-263300000	USD
CY2019Q1	dnb	Revenue From Contract With Customer Excluding Assessed Tax International Lag Adjustments RevenueFromContractWithCustomerExcludingAssessedTaxInternationalLagAdjustments	25900000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-85800000	USD
CY2019Q4	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-172400000	USD
CY2019Q1	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	1028400000	USD
CY2019Q1	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	21600000	USD
CY2020Q3	dnb	Payments For Embedded Derivatives PaymentsForEmbeddedDerivatives	205200000	USD
CY2020	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-32800000	USD
CY2020Q4	dnb	Redeemable Cumulative Preferred Stock Liability Portion Current RedeemableCumulativePreferredStockLiabilityPortionCurrent	1067900000	USD
CY2020	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	36100000	USD
CY2019	us-gaap	Temporary Equity Accretion To Redemption Value TemporaryEquityAccretionToRedemptionValue	3400000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	30.51
CY2020Q2	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	30.51
CY2020Q1	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	30.51
CY2019Q3	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	30.51
CY2019Q4	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	30.51
CY2020Q2	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	32100000	USD
CY2020Q1	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	32000000.0	USD
CY2019Q4	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	32000000.0	USD
CY2019Q3	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	32100000	USD
CY2019Q2	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	10700000	USD
CY2019Q2	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	21300000	USD

Files In Submission

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$DNB
Dun & Bradstreet Holdings, Inc. Stock $dnb

2020 Form 10-K Financial Statement

#000179920821000013 Filed on February 25, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DNB Dun & Bradstreet Holdings, Inc. Stock $dnb

2020 Form 10-K Financial Statement

#000179920821000013 Filed on February 25, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DNB
Dun & Bradstreet Holdings, Inc. Stock $dnb