$EFX
EQUIFAX INC Stock $efx

$efx Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000003318522000014 Filed on February 24, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$1.253B	$4.924B	$1.119B
YoY Change	12.04%	19.29%	23.48%
Cost Of Revenue	$525.6M	$1.981B	$480.9M
YoY Change	9.3%	14.02%	25.63%
Gross Profit	$727.6M	$2.943B	$637.5M
YoY Change	14.13%	23.13%	21.89%
Gross Profit Margin	58.06%	59.77%	57.0%
Selling, General & Admin	$334.6M	$1.325B	$334.7M
YoY Change	-0.03%	0.16%	-13.96%
% of Gross Profit	45.99%	45.01%	52.5%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$134.7M	$489.6M	$104.1M
YoY Change	29.39%	22.61%	17.63%
% of Gross Profit	18.51%	16.64%	16.33%
Operating Expenses	$466.8M	$1.325B	$436.2M
YoY Change	7.02%	0.16%	-8.34%
Operating Profit	$260.8M	$1.138B	$169.5M
YoY Change	53.86%	68.19%	260.64%
Interest Expense	-$38.50M	$145.6M	-$36.90M
YoY Change	4.34%	2.82%	25.51%
% of Operating Profit	-14.76%	12.79%	-21.77%
Other Income/Expense, Net	-$75.50M	-$43.20M	-$20.90M
YoY Change	261.24%	-128.76%	-437.1%
Pretax Income	$138.2M	$949.2M	$111.6M
YoY Change	23.84%	38.53%	366.95%
Income Tax	$15.20M	$200.7M	$21.00M
% Of Pretax Income	11.0%	21.14%	18.82%
Net Earnings	$122.1M	$744.2M	$74.50M
YoY Change	63.89%	43.09%	371.52%
Net Earnings / Revenue	9.74%	15.11%	6.66%
Basic Earnings Per Share		$6.11	$0.61
Diluted Earnings Per Share	$985.5K	$6.02	$0.61
COMMON SHARES
Basic Shares Outstanding	122.0M shares	121.9M shares	121.6M shares
Diluted Shares Outstanding		123.6M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$224.7M	$224.7M	$1.685B
YoY Change	-86.66%	-86.66%	319.79%
Cash & Equivalents	$224.7M	$224.7M	$1.685B
Short-Term Investments
Other Short-Term Assets	$60.20M	$168.6M	$59.00M
YoY Change	2.03%	3.37%	-68.6%
Inventory
Prepaid Expenses	$108.4M		$104.1M
Receivables	$727.6M	$727.6M	$630.6M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.121B	$1.121B	$2.478B
YoY Change	-54.77%	-54.77%	104.92%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.316B	$1.316B	$1.139B
YoY Change	15.49%	15.49%	20.24%
Goodwill	$6.258B		$4.496B
YoY Change	39.2%		4.35%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$353.1M	$353.1M	$405.6M
YoY Change	-12.94%	-12.94%	33.33%
Total Long-Term Assets	$9.920B	$9.920B	$7.134B
YoY Change	39.06%	39.06%	6.48%
TOTAL ASSETS
Total Short-Term Assets	$1.121B	$1.121B	$2.478B
Total Long-Term Assets	$9.920B	$9.920B	$7.134B
Total Assets	$11.04B	$11.04B	$9.612B
YoY Change	14.87%	14.87%	21.53%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$211.6M	$211.6M	$159.1M
YoY Change	33.0%	33.0%	7.28%
Accrued Expenses	$237.5M	$495.4M	$251.8M
YoY Change	-5.68%	-1.33%	54.01%
Deferred Revenue	$121.3M		$108.3M
YoY Change	12.0%		4.13%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$824.8M	$824.8M	$1.101B
YoY Change	-25.09%	-25.09%	35419.35%
Total Short-Term Liabilities	$2.291B	$2.291B	$2.483B
YoY Change	-7.72%	-7.72%	82.7%
LONG-TERM LIABILITIES
Long-Term Debt	$4.470B	$4.470B	$3.277B
YoY Change	36.4%	36.4%	-3.02%
Other Long-Term Liabilities	$190.0M	$320.1M	$178.1M
YoY Change	6.68%	3.66%	-1.38%
Total Long-Term Liabilities	$4.660B	$4.790B	$3.455B
YoY Change	34.86%	33.58%	-2.94%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.291B	$2.291B	$2.483B
Total Long-Term Liabilities	$4.660B	$4.790B	$3.455B
Total Liabilities	$7.440B	$7.457B	$6.402B
YoY Change	16.22%	15.72%	21.1%
SHAREHOLDERS EQUITY
Retained Earnings	$4.752B		$4.185B
YoY Change	13.53%		8.58%
Common Stock	$1.773B		$1.707B
YoY Change	3.87%		4.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.639B		$2.547B
YoY Change	3.62%		-0.41%
Treasury Stock Shares	66.60M shares		66.90M shares
Shareholders Equity	$3.584B	$3.584B	$3.168B
YoY Change
Total Liabilities & Shareholders Equity	$11.04B	$11.04B	$9.612B
YoY Change	14.87%	14.87%	21.53%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$122.1M	$744.2M	$74.50M
YoY Change	63.89%	43.09%	371.52%
Depreciation, Depletion And Amortization	$134.7M	$489.6M	$104.1M
YoY Change	29.39%	22.61%	17.63%
Cash From Operating Activities	$385.3M	$1.335B	$297.2M
YoY Change	29.64%	41.07%	28.83%
INVESTING ACTIVITIES
Capital Expenditures	-$136.1M	-$469.0M	-$111.8M
YoY Change	21.74%	11.32%	19.06%
Acquisitions		$2.936B
YoY Change		4681.11%
Other Investing Activities	-$1.822B	-$2.929B	$0.00
YoY Change		4002.52%	-100.0%
Cash From Investing Activities	-$1.958B	-$3.398B	-$111.8M
YoY Change	1651.25%	589.71%	-15.3%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$69.90M
YoY Change
Debt Paid & Issued, Net		$1.100B
YoY Change		780.16%
Cash From Financing Activities	-224.7M	$617.7M	-54.50M
YoY Change	312.29%	-23.82%	-141.44%
NET CHANGE
Cash From Operating Activities	385.3M	$1.335B	297.2M
Cash From Investing Activities	-1.958B	-$3.398B	-111.8M
Cash From Financing Activities	-224.7M	$617.7M	-54.50M
Net Change In Cash	-1.797B	-$1.460B	130.9M
YoY Change	-1473.03%	-213.76%	-43.14%
FREE CASH FLOW
Cash From Operating Activities	$385.3M	$1.335B	$297.2M
Capital Expenditures	-$136.1M	-$469.0M	-$111.8M
Free Cash Flow	$521.4M	$1.804B	$409.0M
YoY Change	27.48%	31.9%	26.0%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000033185
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P1Y
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P2Y
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P2Y
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
CY2021	efx	Change In Control Event Merger Or Business Combination Percent Of Common Stock Received ChangeInControlEventMergerOrBusinessCombinationPercentOfCommonStockReceived	0.6667
CY2021	efx	Share Based Compensation Arrangement By Share Based Payment Award Options Expiration Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationTerm	P10Y
CY2021Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2021	efx	Lessee Operating Lease Termination Period LesseeOperatingLeaseTerminationPeriod	P1Y
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-06605
CY2021	dei	Entity Registrant Name EntityRegistrantName	EQUIFAX INC.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	GA
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	58-0401110
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	1550 Peachtree Street
CY2021	dei	Entity Address Address Line2 EntityAddressAddressLine2	N.W.
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Atlanta
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	GA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	30309
CY2021	dei	City Area Code CityAreaCode	404
CY2021	dei	Local Phone Number LocalPhoneNumber	885-8000
CY2021	dei	Security12b Title Security12bTitle	Common Stock, $1.25 par value per share
CY2021	dei	Trading Symbol TradingSymbol	EFX
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3507600000	USD
CY2021	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1980900000	USD
CY2020	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1737400000	USD
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	29179641497	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	122084603	shares
CY2021	dei	Auditor Firm AuditorFirmId	42
CY2021	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2021	dei	Auditor Location AuditorLocation	Atlanta, Georgia
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4923900000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4127500000	USD
CY2019	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	1521700000	USD
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1324600000	USD
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1322500000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	1990200000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	480400000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	391000000.0	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	331100000	USD
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	3785900000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	3450900000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	3843000000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	1138000000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	676600000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-335400000	USD
CY2021	us-gaap	Interest Expense InterestExpense	145600000	USD
CY2020	us-gaap	Interest Expense InterestExpense	141600000	USD
CY2019	us-gaap	Interest Expense InterestExpense	111700000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-43200000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	150200000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	33300000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	949200000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	685200000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-413800000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	200700000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159000000.0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-35700000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	748500000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	526200000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-378100000	USD
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4300000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6100000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6000000.0	USD
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CY2020	us-gaap	Net Income Loss NetIncomeLoss	520100000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-384100000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.11
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.28
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.18
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	121900000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	121500000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	120900000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.02
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.24
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.15
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	123600000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	122800000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	122000000.0	shares
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.56
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.56
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CY2021	us-gaap	Profit Loss ProfitLoss	748500000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	526200000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-378100000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-124700000	USD
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CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-100000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	1100000	USD
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CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	100000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	100000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-124600000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	184200000	USD
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CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	224700000	USD
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CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	104100000	USD
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	60200000	USD
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CY2021Q4	us-gaap	Assets Current AssetsCurrent	1120900000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	2478300000	USD
CY2021Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	1727300000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	1374500000	USD
CY2021Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	299600000	USD
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CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	353100000	USD
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CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	251800000	USD
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	257900000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	250300000	USD
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	121300000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	108300000	USD
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	638200000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	612500000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2291300000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2483100000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4470100000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3277300000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	358200000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	332300000	USD
CY2021Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	130100000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	130700000	USD
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CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	178100000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	7439700000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	6401500000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
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CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000.0	shares
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CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
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CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
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CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	300000000.0	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	189300000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	189300000	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	122100000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	121800000	shares
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	236600000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	236600000	USD
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1536700000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1470700000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4751600000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4185400000	USD
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CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-171400000	USD
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	66600000	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	66900000	shares
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2639200000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2547000000	USD
CY2021Q4	us-gaap	Common Stock Shares Held In Employee Trust Shares CommonStockSharesHeldInEmployeeTrustShares	600000	shares
CY2020Q4	us-gaap	Common Stock Shares Held In Employee Trust Shares CommonStockSharesHeldInEmployeeTrustShares	600000	shares
CY2021Q4	us-gaap	Common Stock Held In Trust CommonStockHeldInTrust	5900000	USD
CY2020Q4	us-gaap	Common Stock Held In Trust CommonStockHeldInTrust	5900000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	3584400000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	3168400000	USD
CY2021Q4	us-gaap	Minority Interest MinorityInterest	16800000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	41900000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3601200000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3210300000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	11040900000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9611800000	USD
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CY2020	us-gaap	Profit Loss ProfitLoss	526200000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-378100000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	489600000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	399300000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	337300000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	54900000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	54700000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	49700000	USD
CY2021	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	9300000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	66500000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-82700000	USD
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CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	149500000	USD
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CY2020	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	USD
CY2021	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	200000	USD
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CY2019	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	66200000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	93700000	USD
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CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-35800000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	78800000	USD
CY2021	efx	Increase Decrease In Current Liabilities Excluding Debt IncreaseDecreaseInCurrentLiabilitiesExcludingDebt	23500000	USD
CY2020	efx	Increase Decrease In Current Liabilities Excluding Debt IncreaseDecreaseInCurrentLiabilitiesExcludingDebt	106900000	USD
CY2019	efx	Increase Decrease In Current Liabilities Excluding Debt IncreaseDecreaseInCurrentLiabilitiesExcludingDebt	527700000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1334800000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	946200000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	313800000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	469000000.0	USD
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CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	61400000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	272900000	USD
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CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
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CY2021	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	1500000	USD
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CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-492700000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-697500000	USD
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CY2019	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	1800000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1100200000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	125000000.0	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	250000000.0	USD
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CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	998300000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	69900000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
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CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	188700000	USD
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CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	41700000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	22300000	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	57300000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	15900000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10500000	USD
CY2021	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	11200000	USD
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CY2019	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	0	USD
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	14500000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	9800000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	5100000	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	300000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
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CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	810800000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	557900000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-14200000	USD
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CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3500000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1459900000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1283300000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	177700000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1684600000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	401300000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	223600000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	224700000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1684600000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	401300000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3155600000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	-378100000	USD
CY2019	efx	Other Comprehensive Income Loss Net Of Tax Including Other Adjustments OtherComprehensiveIncomeLossNetOfTaxIncludingOtherAdjustments	-20500000	USD
CY2019	efx	Shares Issued Under Stock And Benefit Plans Net Of Minimum Tax Withholdings Values SharesIssuedUnderStockAndBenefitPlansNetOfMinimumTaxWithholdingsValues	11500000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.56
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	189600000	USD
CY2019	efx	Dividends Paid To Employee Benefits Trust DividendsPaidToEmployeeBenefitsTrust	900000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	49700000	USD
CY2019	efx	Redeemable Noncontrolling Interest Adjustment RedeemableNoncontrollingInterestAdjustment	100000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	6600000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-100000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2622900000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	526200000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	184200000	USD
CY2020	efx	Shares Issued Under Stock And Benefit Plans Net Of Minimum Tax Withholdings Values SharesIssuedUnderStockAndBenefitPlansNetOfMinimumTaxWithholdingsValues	25400000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.56
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	190500000	USD
CY2020	efx	Dividends Paid To Employee Benefits Trust DividendsPaidToEmployeeBenefitsTrust	1000000.0	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	54700000	USD
CY2020	efx	Redeemable Noncontrolling Interest Adjustment RedeemableNoncontrollingInterestAdjustment	0	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	4600000	USD
CY2020	efx	Noncontrolling Interest Increase Decreasefrom Redemptionsor Purchaseof Interestsand Increasefrom Business Combination NoncontrollingInterestIncreaseDecreasefromRedemptionsorPurchaseofInterestsandIncreasefromBusinessCombination	-9000000.0	USD
CY2020	us-gaap	Stockholders Equity Other StockholdersEquityOther	-400000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3210300000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	748500000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-124600000	USD
CY2021	efx	Shares Issued Under Stock And Benefit Plans Net Of Minimum Tax Withholdings Values SharesIssuedUnderStockAndBenefitPlansNetOfMinimumTaxWithholdingsValues	-10400000	USD
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	69900000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.56
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	191200000	USD
CY2021	efx	Dividends Paid To Employee Benefits Trust DividendsPaidToEmployeeBenefitsTrust	1200000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	54900000	USD
CY2021	efx	Redeemable Noncontrolling Interest Adjustment RedeemableNoncontrollingInterestAdjustment	0	USD
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	6500000	USD
CY2021	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	11200000	USD
CY2021	us-gaap	Stockholders Equity Other StockholdersEquityOther	-100000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3601200000	USD
CY2021Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	520200000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-292500000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-168400000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-352400000	USD
CY2021Q4	efx	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	400000	USD
CY2020Q4	efx	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	500000	USD
CY2019Q4	efx	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	200000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1900000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	2000000.0	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	900000	USD
CY2021Q4	efx	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectTax	600000	USD
CY2020Q4	efx	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectTax	700000	USD
CY2019Q4	efx	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectTax	700000	USD
CY2021Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-1000000.0	USD
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CY2019Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-1100000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-295400000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-171400000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-354400000	USD
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates.</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> The preparation of our Consolidated Financial Statements requires us to make estimates and assumptions in accordance with GAAP. Accordingly, we make these estimates and assumptions after exercising judgment. We </span>believe that the estimates and assumptions inherent in our Consolidated Financial Statements are reasonable, based upon information available to us at the time they are made including the consideration of events that have occurred up until the point these Consolidated Financial Statements have been filed. These estimates and assumptions affect the reported amounts of assets, liabilities, revenues and expenses and disclosure of contingent assets and liabilities at the date of the financial statements, as well as reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from these estimates.
CY2021Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	12100000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	30300000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	35300000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	21100000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	33600000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	120300000	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	70200000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	59000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	51900000	USD
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	122000000.0	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	121900000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	121500000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	120900000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1700000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1300000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1100000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	123600000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	122800000	shares
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12900000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	11200000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	300000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6300000	USD
CY2021	efx	Accounts Receivable Allowance For Credit Loss Writeoff Recovery Net AccountsReceivableAllowanceForCreditLossWriteoffRecoveryNet	700000	USD
CY2020	efx	Accounts Receivable Allowance For Credit Loss Writeoff Recovery Net AccountsReceivableAllowanceForCreditLossWriteoffRecoveryNet	-4600000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	13900000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12900000	USD
CY2020Q4	us-gaap	Pledged Assets Separately Reported Other Assets Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedOtherAssetsPledgedAsCollateralAtFairValue	156400000	USD
CY2021Q4	us-gaap	Pledged Assets Separately Reported Other Assets Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedOtherAssetsPledgedAsCollateralAtFairValue	156400000	USD
CY2020	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2019	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2021	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2021Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	56400000	USD
CY2021	us-gaap	Equity Securities Without Readily Determinable Fair Value Downward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceAdjustmentAnnualAmount	64000000	USD
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	127700000	USD
CY2020	us-gaap	Equity Securities Without Readily Determinable Fair Value Upward Price Adjustment Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount	116600000	USD
CY2021	us-gaap	Foreign Currency Transaction Loss Before Tax ForeignCurrencyTransactionLossBeforeTax	2600000	USD
CY2020	us-gaap	Foreign Currency Transaction Loss Before Tax ForeignCurrencyTransactionLossBeforeTax	7500000	USD
CY2019	us-gaap	Foreign Currency Transaction Loss Before Tax ForeignCurrencyTransactionLossBeforeTax	3000000	USD
CY2021Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	5200000000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	4800000000	USD
CY2021Q4	efx	Long Term Debt Carrying Amount LongTermDebtCarryingAmount	5000000000	USD
CY2020Q4	efx	Long Term Debt Carrying Amount LongTermDebtCarryingAmount	4400000000	USD
CY2021Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	30200000	USD
CY2021	us-gaap	Redemption Premium RedemptionPremium	0	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4923900000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4127500000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3507600000	USD
CY2021	efx	Increase Decreasein Revenue From Contract With Customer Excluding Assessed Tax Amount IncreaseDecreaseinRevenueFromContractWithCustomerExcludingAssessedTaxAmount	796400000	USD
CY2020	efx	Increase Decrease In Revenue From Contract With Customer Excluding Assessed Tax Percent IncreaseDecreaseInRevenueFromContractWithCustomerExcludingAssessedTaxPercent	0.19
CY2020	efx	Increase Decreasein Revenue From Contract With Customer Excluding Assessed Tax Amount IncreaseDecreaseinRevenueFromContractWithCustomerExcludingAssessedTaxAmount	619900000	USD
CY2019	efx	Increase Decrease In Revenue From Contract With Customer Excluding Assessed Tax Percent IncreaseDecreaseInRevenueFromContractWithCustomerExcludingAssessedTaxPercent	0.18
CY2021Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	1094100000	USD
CY2021	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P12Y7M6D
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	59500000	USD
CY2020	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P11Y8M12D
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4308300000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	58300000	USD
CY2020	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	300000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	128900000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	4495800000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1842000000	USD
CY2021	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	700000	USD
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-79100000	USD
CY2021	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	1300000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	6258100000	USD
CY2021Q3	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2021Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	94900000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	94900000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	2813400000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	915400000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1898000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1878600000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	880800000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	997800000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	176400000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	141800000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	140100000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	225800000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	218200000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	207400000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	204200000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	192900000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	849500000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1898000000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	5325100000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	4402200000	USD
CY2021Q4	us-gaap	Debt Current DebtCurrent	824800000	USD
CY2020Q4	us-gaap	Debt Current DebtCurrent	1101100000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	30200000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	23800000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4470100000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3277300000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	824800000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	404700000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	767500000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	417500000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	935600000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1975000000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	5325100000	USD
CY2021Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	700000	USD
CY2021Q2	efx	Commercial Paper Maximum Borrowing Capacity CommercialPaperMaximumBorrowingCapacity	1100000000	USD
CY2021Q3	efx	Commercial Paper Maximum Borrowing Capacity CommercialPaperMaximumBorrowingCapacity	1500000000	USD
CY2021Q3	efx	Commercial Paper Maximum Borrowing Capacity CommercialPaperMaximumBorrowingCapacity	1500000000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	139700000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	130900000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	105300000	USD
CY2021	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	51000000	USD
CY2020	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	50000000	USD
CY2019	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	52000000	USD
CY2021	efx	Changein Control Event Minimum Voting Stock Acquired Percent ChangeinControlEventMinimumVotingStockAcquiredPercent	0.20
CY2021	efx	Conditional Severance Payments ConditionalSeverancePayments	30500000	USD
CY2021	efx	Share Based Payment Award Relative Total Shareholder Return Period ShareBasedPaymentAwardRelativeTotalShareholderReturnPeriod	P3Y
CY2021	efx	Conditional Share Payout Percentage ConditionalSharePayoutPercentage	1
CY2021Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	0	USD
CY2020Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	0	USD
CY2021Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	0	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	108100000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	34800000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-5200000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	39300000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	24000000.0	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	8500000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	44000000.0	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	33700000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	43700000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	191400000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	92500000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	47000000.0	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	43300000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	40600000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-48200000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	4700000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-100000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-11300000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-38700000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	26000000.0	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-23200000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	9300000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	66500000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-82700000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	200700000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159000000.0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-35700000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	885600000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	470300000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-522700000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	63600000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	214900000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	108900000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	949200000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	685200000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-413800000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
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
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	199300000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	143900000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-86900000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	34900000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	17800000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-6300000	USD
CY2021	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-10400000	USD
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	5500000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-2700000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	16600000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	15900000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Research IncomeTaxReconciliationTaxCreditsResearch	14900000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-14000000.0	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-6000000.0	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-3000000.0	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-800000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	1400000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	1200000	USD
CY2021	efx	Effective Income Tax Rate Reconciliation Legal Settlement Amount EffectiveIncomeTaxRateReconciliationLegalSettlementAmount	0	USD
CY2020	efx	Effective Income Tax Rate Reconciliation Legal Settlement Amount EffectiveIncomeTaxRateReconciliationLegalSettlementAmount	100000	USD
CY2019	efx	Effective Income Tax Rate Reconciliation Legal Settlement Amount EffectiveIncomeTaxRateReconciliationLegalSettlementAmount	69100000	USD
CY2021	efx	Effective Income Tax Rate Reconciliation Excess Officer Compensation Amount EffectiveIncomeTaxRateReconciliationExcessOfficerCompensationAmount	5800000	USD
CY2020	efx	Effective Income Tax Rate Reconciliation Excess Officer Compensation Amount EffectiveIncomeTaxRateReconciliationExcessOfficerCompensationAmount	5800000	USD
CY2019	efx	Effective Income Tax Rate Reconciliation Excess Officer Compensation Amount EffectiveIncomeTaxRateReconciliationExcessOfficerCompensationAmount	5100000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	500000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	7800000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2000000.0	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1400000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2700000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	200700000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	159000000.0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-35700000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.212
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.232
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.086
CY2021Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	124900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	286100000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	123400000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	128000000.0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	61000000.0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	62700000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	17200000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	17400000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	34700000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	34600000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	19600000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	17600000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Legal Settlements DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLegalSettlements	94900000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Legal Settlements DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLegalSettlements	94900000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	34100000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	33000000.0	USD
CY2021Q4	efx	Deferred Tax Asset Operating Lease Assets DeferredTaxAssetOperatingLeaseAssets	26000000.0	USD
CY2020Q4	efx	Deferred Tax Asset Operating Lease Assets DeferredTaxAssetOperatingLeaseAssets	23100000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	14800000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	11800000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	550600000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	709200000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	192000000.0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	382700000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	358600000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	326500000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	620600000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	540700000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	5700000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	11300000	USD
CY2021Q4	efx	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	23400000	USD
CY2020Q4	efx	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	19100000	USD
CY2021Q4	efx	Deferred Tax Liabilities Operating Lease Liabilities DeferredTaxLiabilitiesOperatingLeaseLiabilities	26000000.0	USD
CY2020Q4	efx	Deferred Tax Liabilities Operating Lease Liabilities DeferredTaxLiabilitiesOperatingLeaseLiabilities	23100000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	10700000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	11600000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	17400000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	41500000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4000000.0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2300000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	707800000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	649600000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	349200000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	323100000	USD
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	9000000.0	USD
CY2020Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	9200000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	358200000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	332300000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	349200000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	323100000	USD
CY2021Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	278000000	USD
CY2021Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Undistributed Earnings Of Foreign Subsidiaries DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries	26800000	USD
CY2021Q4	efx	Deferred Tax Assets Operating Lossand Capital Lossand Foreign Tax Credit Carryforwardsand Researchand Development Credit DeferredTaxAssetsOperatingLossandCapitalLossandForeignTaxCreditCarryforwardsandResearchandDevelopmentCredit	180700000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	192300000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	75600000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	12000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	41500000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	27500000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	8700000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	12700000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	100000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	100000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	8700000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	9100000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	500000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	200000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	9600000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	7200000	USD
CY2021	efx	Unrecognized Tax Benefits Increase Decrease Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromForeignCurrencyTranslation	-200000	USD
CY2020	efx	Unrecognized Tax Benefits Increase Decrease Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromForeignCurrencyTranslation	-300000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	48500000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	41500000	USD
CY2021Q4	efx	Liability For Unrecognized Tax Benefits LiabilityForUnrecognizedTaxBenefits	34500000	USD
CY2020Q4	efx	Liability For Unrecognized Tax Benefits LiabilityForUnrecognizedTaxBenefits	27100000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5200000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	3100000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	33000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	26200000	USD
CY2021	efx	Unrecognized Tax Benefits That Would Impact Effective Tax Rate Income Tax Penaltiesand Interest Accrued UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRateIncomeTaxPenaltiesandInterestAccrued	4700000	USD
CY2020	efx	Unrecognized Tax Benefits That Would Impact Effective Tax Rate Income Tax Penaltiesand Interest Accrued UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRateIncomeTaxPenaltiesandInterestAccrued	2800000	USD
CY2021Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	1000000	USD
CY2020Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	1000000	USD
CY2021Q4	efx	Unrecognized Tax Benefits Gross UnrecognizedTaxBenefitsGross	48500000	USD
CY2020Q4	efx	Unrecognized Tax Benefits Gross UnrecognizedTaxBenefitsGross	41500000	USD
CY2021Q4	efx	Unrecognized Tax Benefits Amount With No Associated Liability UnrecognizedTaxBenefitsAmountWithNoAssociatedLiability	19200000	USD
CY2020Q4	efx	Unrecognized Tax Benefits Amount With No Associated Liability UnrecognizedTaxBenefitsAmountWithNoAssociatedLiability	17500000	USD
CY2021Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	29300000	USD
CY2020Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	24000000	USD
CY2021	efx	Numberof Share Based Award Plans NumberofShareBasedAwardPlans	1	plan
CY2013Q2	efx	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Period Increase ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedPeriodIncrease	11000000	shares
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	54900000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	54700000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	49700000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	13000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	13000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	12200000	USD
CY2021	efx	Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentage	0.33
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.010
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.013
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.013
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.285
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.235
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.230
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.005
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.013
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.024
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y9M18D
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y4M24D
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y8M12D
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	39.63
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	24.29
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.97
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1831000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	137.01
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	314000	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	184.03
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	341000	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	114.35
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	94000	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	145.92
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1710000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	149.67
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y3M18D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	240900000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	1690000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	149.36
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P5Y3M18D
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	238600000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	522000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	129.57
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y8M12D
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	84100000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1825000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	122.46
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1462000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	103.50
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	433000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	158.62
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	740000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	112.48
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	365000	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	106.04
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	307000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	72.45
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	62000	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	147.83
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	70000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	123.62
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1831000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	137.01
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1825000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	122.46
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	563000	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	112.11
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	643000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	104.95
CY2021	efx	Share Based Payment Award Total Shareholder Return Period ShareBasedPaymentAwardTotalShareholderReturnPeriod	P3Y
CY2021	efx	Share Based Payment Award Total Shareholder Return Period ShareBasedPaymentAwardTotalShareholderReturnPeriod	P3Y
CY2021	efx	Share Based Compensation Arrangement Cumulative Adjusted Earnings Per Share Period ShareBasedCompensationArrangementCumulativeAdjustedEarningsPerSharePeriod	P3Y
CY2021	efx	Minimum Percentage Of Target To Which Shares May Be Issued MinimumPercentageOfTargetToWhichSharesMayBeIssued	0
CY2021	efx	Maximum Percentage Of Target To Which Shares May Be Issued MaximumPercentageOfTargetToWhichSharesMayBeIssued	2
CY2021	efx	Percentage Of Target To Which Shares May Be Issued PercentageOfTargetToWhichSharesMayBeIssued	1
CY2021	efx	Maximum Percentage Of Target To Which Shares May Be Issued MaximumPercentageOfTargetToWhichSharesMayBeIssued	2
CY2021	efx	Share Based Payment Award Total Shareholder Return Period ShareBasedPaymentAwardTotalShareholderReturnPeriod	P3Y
CY2021	efx	Share Based Compensation Arrangement Cumulative Adjusted Earnings Per Share Period ShareBasedCompensationArrangementCumulativeAdjustedEarningsPerSharePeriod	P3Y
CY2021	efx	Numberof Executive Defined Benefit Pension Plans NumberofExecutiveDefinedBenefitPensionPlans	3	plan
CY2021	efx	Numberof Executive Retirement Programs NumberofExecutiveRetirementPrograms	3	plan
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	730800000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	765900000	USD
CY2021	efx	Redemption Notice Period Lower Limit RedemptionNoticePeriodLowerLimit	P30D
CY2021	efx	Redemption Notice Period Upper Limit RedemptionNoticePeriodUpperLimit	P90D
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1900000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	2000000	USD
CY2021Q4	efx	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	400000	USD
CY2020Q4	efx	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax	500000	USD
CY2021	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-20200000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-32200000	USD
CY2021	efx	Redemption Notice Period Lower Limit RedemptionNoticePeriodLowerLimit	P30D
CY2021	efx	Redemption Notice Period Upper Limit RedemptionNoticePeriodUpperLimit	P90D
CY2021Q4	efx	Defined Benefit Plan Plan Assets Percent Of Portfolio Invested In Securities Maximum DefinedBenefitPlanPlanAssetsPercentOfPortfolioInvestedInSecuritiesMaximum	0.05
CY2021Q4	efx	Defined Benefit Plan Plan Assets Percent Of Equity Portfolio Market Value Invested In Securities DefinedBenefitPlanPlanAssetsPercentOfEquityPortfolioMarketValueInvestedInSecurities	0.10
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	34500000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	31800000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	26900000	USD
CY2021Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	147300000	USD
CY2020Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	149000000	USD
CY2021Q4	efx	Number Of Employee Benefit Trusts To Satisfy Obligations Under Supplemental Retirement Plans NumberOfEmployeeBenefitTrustsToSatisfyObligationsUnderSupplementalRetirementPlans	2	trust
CY2021Q4	efx	Number Of Supplemental Retirement Plans NumberOfSupplementalRetirementPlans	2	plan
CY2020Q4	us-gaap	Common Stock Shares Held In Employee Trust Shares CommonStockSharesHeldInEmployeeTrustShares	600000	shares
CY2021Q4	us-gaap	Common Stock Shares Held In Employee Trust Shares CommonStockSharesHeldInEmployeeTrustShares	600000	shares
CY2021Q4	us-gaap	Common Stock Shares Held In Employee Trust CommonStockSharesHeldInEmployeeTrust	5900000	USD
CY2020Q4	us-gaap	Common Stock Shares Held In Employee Trust CommonStockSharesHeldInEmployeeTrust	5900000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-124100000	USD
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-100000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	37800000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	39300000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	40800000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	27800000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	42100000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y1M6D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.031
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	29500000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	27800000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	18700000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	15800000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	10900000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	16400000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	119100000	USD
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4923900000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4127500000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3507600000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	1138000000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	676600000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	-335400000	USD
CY2021Q4	us-gaap	Assets Assets	11040900000	USD
CY2020Q4	us-gaap	Assets Assets	9611800000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	480400000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	391000000.0	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	331100000	USD
CY2021	efx	Expendituresto Acquire Productive Assets ExpenditurestoAcquireProductiveAssets	490500000	USD
CY2020	efx	Expendituresto Acquire Productive Assets ExpenditurestoAcquireProductiveAssets	430700000	USD
CY2019	efx	Expendituresto Acquire Productive Assets ExpenditurestoAcquireProductiveAssets	375900000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4923900000	USD
CY2021	efx	Percentage Of Consolidated Operating Revenues PercentageOfConsolidatedOperatingRevenues	1
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4127500000	USD
CY2020	efx	Percentage Of Consolidated Operating Revenues PercentageOfConsolidatedOperatingRevenues	1
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3507600000	USD
CY2019	efx	Percentage Of Consolidated Operating Revenues PercentageOfConsolidatedOperatingRevenues	1
CY2021Q4	us-gaap	Noncurrent Assets NoncurrentAssets	9920000000	USD
CY2021	efx	Percentage Of Long Lived Assets PercentageOfLongLivedAssets	1
CY2020Q4	us-gaap	Noncurrent Assets NoncurrentAssets	7133500000	USD
CY2020	efx	Percentage Of Long Lived Assets PercentageOfLongLivedAssets	1
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	395600000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	-12400000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	-198000000.0	USD
CY2021	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	-20700000	USD
CY2021Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	205900000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	391000000.0	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	-28100000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	10100000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	-22600000	USD
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	395600000	USD
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	442800000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	-56500000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	-2000000.0	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	-6700000	USD
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	391000000.0	USD

Files In Submission

Name	View Source	Status
0000033185-22-000014-index-headers.html	Edgar Link	pending
0000033185-22-000014-index.html	Edgar Link	pending
0000033185-22-000014.txt	Edgar Link	pending
0000033185-22-000014-xbrl.zip	Edgar Link	pending
efx-20211231.htm	Edgar Link	pending
efx-20211231.xsd	Edgar Link	pending
efx-20211231_cal.xml	Edgar Link	unprocessable
efx-20211231_def.xml	Edgar Link	unprocessable
efx-20211231_g1.jpg	Edgar Link	pending
efx-20211231_g2.jpg	Edgar Link	pending
efx-20211231_htm.xml	Edgar Link	completed
efx-20211231_lab.xml	Edgar Link	unprocessable
efx-20211231_pre.xml	Edgar Link	unprocessable
exhibit1016-12312021.htm	Edgar Link	pending
exhibit1023-12312021.htm	Edgar Link	pending
exhibit211-12312021.htm	Edgar Link	pending
exhibit231consent-12312021.htm	Edgar Link	pending
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exhibit312-12312021.htm	Edgar Link	pending
exhibit321-12312021.htm	Edgar Link	pending
exhibit322-12312021.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
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$EFX
EQUIFAX INC Stock $efx

2021 Q4 Form 10-K Financial Statement

#000003318522000014 Filed on February 24, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EFX EQUIFAX INC Stock $efx

2021 Q4 Form 10-K Financial Statement

#000003318522000014 Filed on February 24, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EFX
EQUIFAX INC Stock $efx