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Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Balance and Activity Related to Allowance for Loan Losses for Held-for-Investment Loans, Excluding PCI Loans by Portfolio Segment (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance $ 59,825us-gaap_LoansAndLeasesReceivableAllowance  
Provision for (recapture of) loan losses 0us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet (7,500)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
Ending Balance 60,709us-gaap_LoansAndLeasesReceivableAllowance  
Loans, Excluding PCI Loans [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 59,825us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember		 75,235us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
Charge-offs (344)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember		 (467)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
Recoveries 1,228us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember		 1,457us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
Provision for (recapture of) loan losses 0us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember		 (7,500)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
Ending Balance 60,709us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember		 68,725us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
Loans, Excluding PCI Loans [Member] | Commercial and industrial [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 7,074us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 8,502us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Charge-offs (134)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 (454)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Recoveries 35us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 392us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Provision for (recapture of) loan losses 527us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 (2,072)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Ending Balance 7,502us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember		 6,368us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_CommercialAndIndustrialLoansMember
Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 2,557us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 2,332us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Charge-offs (33)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Recoveries 34us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 63us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Provision for (recapture of) loan losses (362)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 73us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Ending Balance 2,196us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember		 2,468us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_SmallBusinessAdministrationLoansMember
Loans, Excluding PCI Loans [Member] | Commercial real estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 33,373us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 39,402us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Charge-offs 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Recoveries 857us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 68us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Provision for (recapture of) loan losses 618us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 (70)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Ending Balance 34,848us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember		 39,400us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateMember
Loans, Excluding PCI Loans [Member] | Construction [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 988us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember		 1,305us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember
Charge-offs 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember
Recoveries 9us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember		 778us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember
Provision for (recapture of) loan losses 46us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember		 (1,625)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember
Ending Balance 1,043us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember		 458us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConstructionLoansMember
Loans, Excluding PCI Loans [Member] | SFR mortgage [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 2,344us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 2,718us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Charge-offs 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Recoveries 185us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Provision for (recapture of) loan losses (104)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 (436)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Ending Balance 2,425us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		 2,282us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Loans, Excluding PCI Loans [Member] | Dairy & livestock and agribusiness [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 5,479us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 11,728us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Charge-offs 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Recoveries 99us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 144us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Provision for (recapture of) loan losses (1,832)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 (2,605)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Ending Balance 3,746us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember		 9,267us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_DairyLivestockAndAgribusinessMember
Loans, Excluding PCI Loans [Member] | Municipal lease finance receivables [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 1,412us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 2,335us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Charge-offs 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Recoveries 0us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Provision for (recapture of) loan losses (382)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 (816)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Ending Balance 1,030us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember		 1,519us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= cvbf_MunicipalLeaseFinanceReceivablesMember
Loans, Excluding PCI Loans [Member] | Consumer and other loans [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 1,262us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 960us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Charge-offs (177)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 (13)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Recoveries 9us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 12us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Provision for (recapture of) loan losses (269)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 (9)us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Ending Balance 825us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember		 950us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerPortfolioSegmentMember
Loans, Excluding PCI Loans [Member] | Unallocated [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Beginning Balance 5,336us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember		 5,953us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Charge-offs 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Recoveries 0us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember		 0us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Provision for (recapture of) loan losses 1,758us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember		 60us-gaap_AllowanceForLoanAndLeaseLossesAdjustmentsNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember
Ending Balance $ 7,094us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember		 $ 6,013us-gaap_LoansAndLeasesReceivableAllowance
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= cvbf_LoansExcludingPurchasedCreditImpairedLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_UnallocatedFinancingReceivablesMember