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Long-Term Debt (Details) (USD $)
 3 Months Ended 12 Months Ended 36 Months Ended 9 Months Ended 21 Months Ended 60 Months Ended 33 Months Ended 120 Months Ended
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jun. 01, 2014
Jun. 30, 2014
Jun. 30, 2013
Jun. 01, 2021
Jun. 01, 2016
Jun. 30, 2016
Jun. 02, 2021
Mar. 31, 2014
Apr. 30, 2010
May 21, 2011
Apr. 30, 1998
Debt Instrument [Line Items]                              
Long-term debt $ 1,330,563,000us-gaap_LongTermDebt $ 1,330,563,000us-gaap_LongTermDebt $ 839,930,000us-gaap_LongTermDebt                        
Senior Debentures                         0.500clgx_SeniorDebentures    
Noncontrolling Interest, Ownership Percentage by Parent 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent 60.00%us-gaap_MinorityInterestOwnershipPercentageByParent                        
Potential Increase to Term Loan and Line of Credit 500,000,000clgx_PotentialIncreasetoTermLoanandLineofCredit 500,000,000clgx_PotentialIncreasetoTermLoanandLineofCredit                          
Accrued Interest Expense Debt 9,200,000clgx_AccruedInterestExpenseDebt 9,200,000clgx_AccruedInterestExpenseDebt 4,600,000clgx_AccruedInterestExpenseDebt                        
Debt Issuance Cost   14,000,000us-gaap_DebtIssuanceCosts                          
Interest expense   71,092,000us-gaap_InterestExpenseDebt 52,350,000us-gaap_InterestExpenseDebt 55,524,000us-gaap_InterestExpenseDebt                      
Payments of Debt Issuance Costs   14,042,000us-gaap_PaymentsOfDebtIssuanceCosts 10,436,000us-gaap_PaymentsOfDebtIssuanceCosts 0us-gaap_PaymentsOfDebtIssuanceCosts                      
Deferred Costs, Current                       5,400,000us-gaap_DeferredCostsCurrent      
Write off of Deferred Debt Issuance Cost   800,000us-gaap_WriteOffOfDeferredDebtIssuanceCost                          
Interest Rate Swap realized Gain Loss 4,100,000clgx_InterestRateSwaprealizedGainLoss                            
7.25% senior notes due June 2021                              
Debt Instrument [Line Items]                              
Debt instrument, aggregate principal amount                           400,000,000us-gaap_DebtInstrumentFaceAmount
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Debt Instrument, Interest Rate, Stated Percentage                           7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
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Repayments of Debt       7,000,000us-gaap_RepaymentsOfDebt
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Contingent Credit Agreement Term Loan Facility [Member]                              
Debt Instrument [Line Items]                              
Repayments of Debt   31,900,000us-gaap_RepaymentsOfDebt
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Line of Credit Facility, Maximum Borrowing Capacity 850,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
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Term loan facility borrowings due May 2016, weighted-average interest rate of 2.9% at December 31, 2013, extinguished in March 2014                              
Debt Instrument [Line Items]                              
Line of Credit Facility, Term   5 years                          
Contingent Credit Agreement Revolving Facility [Domain]                              
Debt Instrument [Line Items]                              
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Multi Currency Sub Facility [Member]                              
Debt Instrument [Line Items]                              
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Letter Of Credit Sub Facility [Member]                              
Debt Instrument [Line Items]                              
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Credit Agreement [Member]                              
Debt Instrument [Line Items]                              
Line Of Credit Facility, Threshold of Fair Market Value Of Assets and Properties as Collateral 10,000,000clgx_LineOfCreditFacilityThresholdOfFairMarketValueOfAssetsAndPropertiesAsCollateral
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/ us-gaap_DebtInstrumentAxis
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7.55% senior debentures due April 2028                              
Debt Instrument [Line Items]                              
Debt instrument, aggregate principal amount                             100,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
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Notes Payable to Banks [Member] | 7.25% senior notes due June 2021                              
Debt Instrument [Line Items]                              
Long-term debt 393,000,000us-gaap_LongTermDebt
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Debt Instrument, Interest Rate, Stated Percentage 7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
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Debt Instrument, Redemption Price, Percentage Of Aggregate Principle Amount         107.25%clgx_DebtInstrumentRedemptionPricePercentageOfAggregatePrincipleAmount
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Percentage Of Original Principle Amount Redeemable         35.00%clgx_PercentageOfOriginalPrincipleAmountRedeemable
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Interest Coverage Ratio 2.00clgx_InterestCoverageRatio
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/ us-gaap_LongtermDebtTypeAxis
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Notes Payable to Banks [Member] | 7.55% senior debentures due April 2028                              
Debt Instrument [Line Items]                              
Long-term debt 59,645,000us-gaap_LongTermDebt
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Line of Credit [Member] | Term loan facility borrowings due May 2016, weighted-average interest rate of 2.9% at December 31, 2013, extinguished in March 2014                              
Debt Instrument [Line Items]                              
Line of Credit Facility, Periodic Payment           21,300,000us-gaap_LineOfCreditFacilityPeriodicPayment
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Line of Credit [Member] | Credit Agreement [Member]                              
Debt Instrument [Line Items]                              
Interest Coverage Ratio 3.00clgx_InterestCoverageRatio
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Ratio of Indebtedness to Net Capital 4.25us-gaap_RatioOfIndebtednessToNetCapital1
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Debt Instrument [Line Items]                              
Long-term debt 0us-gaap_LongTermDebt
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Debt Instrument, Interest Rate, Stated Percentage 1.90%us-gaap_DebtInstrumentInterestRateStatedPercentage
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Line of Credit Facility, Remaining Borrowing Capacity 465,000,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
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Acquisition Notes [Member] | Non Interest Bearing Acquisition Note [Member]                              
Debt Instrument [Line Items]                              
Debt instrument, aggregate principal amount 5,000,000us-gaap_DebtInstrumentFaceAmount
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Debt Instrument Amount Of Installment   5,000,000.0clgx_DebtInstrumentAmountOfInstallment
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Long-term debt 4,623,000us-gaap_LongTermDebt
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Term Loan due March 2019 [Member] [Domain]                              
Debt Instrument [Line Items]                              
Interest expense   500,000us-gaap_InterestExpenseDebt
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STARS [Member]                              
Debt Instrument [Line Items]                              
Payments to acquire interest in joint venture       20,000,000us-gaap_PaymentsToAcquireInterestInJointVenture
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Debt Instrument [Line Items]                              
Debt instrument, aggregate principal amount       15,000,000us-gaap_DebtInstrumentFaceAmount
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Debt Instrument, Number of Installment Payments   3clgx_DebtInstrumentNumberOfInstallmentPayments
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Debt Instrument Amount Of Installment       5,000,000clgx_DebtInstrumentAmountOfInstallment
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Guarantor Subsidiaries [Member]                              
Debt Instrument [Line Items]                              
Noncontrolling Interest, Ownership Percentage by Parent 100.00%us-gaap_MinorityInterestOwnershipPercentageByParent
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Payments of Debt Issuance Costs   0us-gaap_PaymentsOfDebtIssuanceCosts
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Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate   1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate   2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Debt Instrument [Line Items]                              
Line of Credit Facility, Commitment Fee Percentage   0.25%us-gaap_LineOfCreditFacilityCommitmentFeePercentage
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Debt Instrument [Line Items]                              
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Debt Instrument [Line Items]                              
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Debt Instrument [Line Items]                              
Debt Instrument, Basis Spread on Variable Rate   2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Debt Instrument [Line Items]                              
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Debt Instrument [Line Items]                              
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Debt Instrument [Line Items]                              
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/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= clgx_FourthQuarter2012Member		                          
Fourth Quarter 2013 [Member] | Line of Credit [Member] | Credit Agreement [Member]                              
Debt Instrument [Line Items]                              
Ratio of Indebtedness to Net Capital 3.50us-gaap_RatioOfIndebtednessToNetCapital1
/ us-gaap_DebtInstrumentAxis
= clgx_CreditAgreementMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= clgx_FourthQuarter2013Member		 3.50us-gaap_RatioOfIndebtednessToNetCapital1
/ us-gaap_DebtInstrumentAxis
= clgx_CreditAgreementMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= clgx_FourthQuarter2013Member		                          
Other Current Assets [Member]                              
Debt Instrument [Line Items]                              
Payments of Debt Issuance Costs   13,500,000us-gaap_PaymentsOfDebtIssuanceCosts
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherCurrentAssetsMember		                          
Interest Rate Swap [Member]                              
Debt Instrument [Line Items]                              
Derivative, Notional Amount 500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember		 500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember		                          
Derivative, Fixed Interest Rate 1.57%us-gaap_DerivativeFixedInterestRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember		 1.57%us-gaap_DerivativeFixedInterestRate
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember		                          
Remaining Balance Of Interest Rate Swap Notional Amount 250,000,000clgx_RemainingBalanceOfInterestRateSwapNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember		 250,000,000clgx_RemainingBalanceOfInterestRateSwapNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember		                          
Swap [Member]                              
Debt Instrument [Line Items]                              
Market value adjustments on interest rate swap, net of tax   (2,408,000)clgx_InterestRateSwapUnrealizedGainLoss
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember		 1,526,000clgx_InterestRateSwapUnrealizedGainLoss
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember		 (905,000)clgx_InterestRateSwapUnrealizedGainLoss
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember		                      
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax   (1,500,000)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember		 900,000us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember		 (600,000)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember		                      
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]                              
Debt Instrument [Line Items]                              
Derivative Liability (3,781,000)us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 (3,781,000)us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		 (4,020,000)us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember		                        
December 2017 [Domain] | Interest Rate Swap [Member]                              
Debt Instrument [Line Items]                              
Quarterly Amortization of Interest Rate Swap Notional Amount 12,500,000clgx_QuarterlyAmortizationOfInterestRateSwapNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_StatementScenarioAxis
= clgx_December2017Domain		 12,500,000clgx_QuarterlyAmortizationOfInterestRateSwapNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_StatementScenarioAxis
= clgx_December2017Domain		                          
December 2018 [Domain] | Interest Rate Swap [Member]                              
Debt Instrument [Line Items]                              
Quarterly Amortization of Interest Rate Swap Notional Amount 25,000,000clgx_QuarterlyAmortizationOfInterestRateSwapNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_StatementScenarioAxis
= clgx_December2018Domain		 25,000,000clgx_QuarterlyAmortizationOfInterestRateSwapNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_StatementScenarioAxis
= clgx_December2018Domain		                          
Debt Instrument, Redemption, Period One [Member] | Notes Payable to Banks [Member] | 7.25% senior notes due June 2021                              
Debt Instrument [Line Items]                              
Debt Instrument, Redemption Price, Percentage Of Aggregate Principle Amount               103.63%clgx_DebtInstrumentRedemptionPricePercentageOfAggregatePrincipleAmount
/ us-gaap_DebtInstrumentAxis
= clgx_SeniorIndentureJune2021Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_DebtInstrumentRedemptionPeriodOneMember		 100.00%clgx_DebtInstrumentRedemptionPricePercentageOfAggregatePrincipleAmount
/ us-gaap_DebtInstrumentAxis
= clgx_SeniorIndentureJune2021Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_DebtInstrumentRedemptionPeriodOneMember		            
Debt Instrument, Redemption, Period One [Member] | Line of Credit [Member] | Term loan facility borrowings due May 2016, weighted-average interest rate of 2.9% at December 31, 2013, extinguished in March 2014                              
Debt Instrument [Line Items]                              
Line of Credit Facility, Periodic Payment                   $ 31,900,000us-gaap_LineOfCreditFacilityPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= clgx_TermLoanDueMarch2016Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_DebtInstrumentRedemptionPeriodOneMember		          
Notes Payable to Banks [Member] | Notes Payable to Banks [Member] | 7.25% senior notes due June 2021                              
Debt Instrument [Line Items]                              
Repurchase Price, Percentage of Principal Amount, Upon Certain Change of Control Events                     101.00%clgx_RepurchasePricePercentageOfPrincipalAmountUponCertainChangeOfControlEvents
/ us-gaap_DebtInstrumentAxis
= clgx_SeniorIndentureJune2021Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableToBanksMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_NotesPayableToBanksMember