v2.4.1.9
Assets, Liabilities and Temporary Equity Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Assets  
Available-for-sale securities $ 29,068us-gaap_AvailableForSaleSecurities
Funds on deposit with third parties 82,618us-gaap_DepositAssets
Liabilities  
Contingent earn-out obligations 38,425dva_BusinessAcquisitionContingentEarnOutFairValueDisclosure
Interest rate swap agreements 1,439us-gaap_DerivativeLiabilities
Temporary equity  
Noncontrolling interests subject to put provisions 848,392us-gaap_RedeemableNoncontrollingInterestEquityFairValue
Level 1
 
Assets  
Available-for-sale securities 29,068us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Funds on deposit with third parties 82,618us-gaap_DepositAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Level 2
 
Liabilities  
Interest rate swap agreements 1,439us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Level 3
 
Liabilities  
Contingent earn-out obligations 38,425dva_BusinessAcquisitionContingentEarnOutFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Temporary equity  
Noncontrolling interests subject to put provisions 848,392us-gaap_RedeemableNoncontrollingInterestEquityFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Interest rate cap agreements  
Assets  
Interest rate derivative agreements 7,177us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateCapMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Interest rate cap agreements | Level 2  
Assets  
Interest rate derivative agreements 7,177us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateCapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Interest rate swap agreements  
Assets  
Interest rate derivative agreements 1,291us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Interest rate swap agreements | Level 2  
Assets  
Interest rate derivative agreements $ 1,291us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember