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Non-Covered Loan and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Recorded Investment in, and Aging of, Non-Covered Past Due and Nonaccrual Loans by Class of Loans (Parenthetical) (Detail) (USD $) | Mar. 31, 2014 | Dec. 31, 2013
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Receivables [Abstract] |  |
Nonaccruing loans, current | $ 23,200,000 | $ 23,900,000
Nonaccruing loans, 30-59 days past due | 1,600,000 | 473,000
Nonaccruing loans, 60-89 days past due | 387,000 | 854,000
Nonaccruing loans, 90+ days past due | $ 15,000,000 | $ 14,700,000

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- Definition Nonaccrual financing receivables that are less than 60 days past due but more than 29 days past due. + References No definition available. + Details
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Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Nonaccrual financing receivables that are current. + References No definition available. + Details
Name: | cvbf_FinancingReceivableRecordedInvestmentCurrentNonaccrual
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Financing Receivables 60 To 89 Days Past Due And Not Accruing + References No definition available. + Details
Name: | cvbf_FinancingReceivables60To89DaysPastDueAndNotAccruing
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Financing receivables that are equal to or greater than 90 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Balance Type: | na
Period Type: | duration