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Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Recorded Investment in Loans Held-for-Investment, Excluding PCI Loans, and Related Allowance for Loan Losses by Portfolio Segment (Detail) (Loans, Excluding PCI Loans [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Mar. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment $ 68,377us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment $ 106,596us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Recorded Investment in Loans, Collectively Evaluated for Impairment 3,541,679us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment 3,159,726us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Allowance for Loan Losses, Individually Evaluated for Impairment 794us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 4,001us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Allowance for Loan Losses, Collectively Evaluated for Impairment 59,915us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment 64,724us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Commercial and industrial [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 1,611us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 4,291us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Recorded Investment in Loans, Collectively Evaluated for Impairment 401,989us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 354,714us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Allowance for Loan Losses, Individually Evaluated for Impairment 592us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 814us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Allowance for Loan Losses, Collectively Evaluated for Impairment 6,910us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 5,554us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Small Business Administration [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 3,158us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 1,649us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Recorded Investment in Loans, Collectively Evaluated for Impairment 123,227us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 129,999us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Allowance for Loan Losses, Individually Evaluated for Impairment 42us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 68us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Allowance for Loan Losses, Collectively Evaluated for Impairment 2,154us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 2,400us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Commercial real estate [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 41,886us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 33,907us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Recorded Investment in Loans, Collectively Evaluated for Impairment 2,457,297us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 2,160,144us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Allowance for Loan Losses, Individually Evaluated for Impairment 154us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 320us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Allowance for Loan Losses, Collectively Evaluated for Impairment 34,694us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 39,080us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Construction [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 7,651us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_RealEstateConstructionMember		 26,688us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_RealEstateConstructionMember
Recorded Investment in Loans, Collectively Evaluated for Impairment 47,695us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_RealEstateConstructionMember		 16,218us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_RealEstateConstructionMember
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_RealEstateConstructionMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_RealEstateConstructionMember
Allowance for Loan Losses, Collectively Evaluated for Impairment 1,043us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_RealEstateConstructionMember		 458us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_RealEstateConstructionMember
SFR mortgage [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 5,913us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 11,692us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Recorded Investment in Loans, Collectively Evaluated for Impairment 199,219us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 178,207us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 47us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Allowance for Loan Losses, Collectively Evaluated for Impairment 2,425us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 2,235us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Dairy & livestock and agribusiness [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 7,277us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 27,972us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Recorded Investment in Loans, Collectively Evaluated for Impairment 166,164us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 184,985us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 2,656us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Allowance for Loan Losses, Collectively Evaluated for Impairment 3,746us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 6,611us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Municipal lease finance receivables [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Recorded Investment in Loans, Collectively Evaluated for Impairment 76,220us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 81,041us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Allowance for Loan Losses, Collectively Evaluated for Impairment 1,030us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 1,519us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Consumer and other loans [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 881us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 397us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Recorded Investment in Loans, Collectively Evaluated for Impairment 69,868us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 54,418us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Allowance for Loan Losses, Individually Evaluated for Impairment 6us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 96us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Allowance for Loan Losses, Collectively Evaluated for Impairment 819us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 854us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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Unallocated [Member]
    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Recorded Investment in Loans, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
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Recorded Investment in Loans, Collectively Evaluated for Impairment 0us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
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Allowance for Loan Losses, Individually Evaluated for Impairment 0us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
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/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
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/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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Allowance for Loan Losses, Collectively Evaluated for Impairment $ 7,094us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
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/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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