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Regulatory Matters - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Regulated Operations [Abstract] |  |
Trust-preferred securities included in Tier 1 capital | $ 25.0 cvbf_TrustPreferredSecuritiesIncludedInTierOneCapital | $ 25.0 cvbf_TrustPreferredSecuritiesIncludedInTierOneCapital
Additional dividends without obtaining prior approval from bank regulators declared and paid | $ 98 cvbf_AdditionalDividendsWithoutObtainingPriorApprovalFromBankRegulatorsDeclaredAndPaid |

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- Definition Additional dividends without obtaining prior approval from bank regulators declared and paid. + References No definition available. + Details
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Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Trust preferred securities included in tier one capital. + References No definition available. + Details
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Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration