XML 43 R32.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Business - Additional Information (Detail) $ in Millions | Sep. 30, 2018 Location Subsidiary | Aug. 10, 2018 USD ($)
--- | --- | ---
Schedule Of Description Of Company [Line Items] |  |
Number of inactive subsidiaries | Subsidiary | 1 |
Bank operated banking centers | 68 |
Bank operated trust office locations, number | 3 |
Community Bank [Member] |  |
Schedule Of Description Of Company [Line Items] |  |
Bank operated banking centers |  | 16
Total assets | $ |  | $ 4,090

X
- Definition Bank operated banking centers number. + References No definition available. + Details
Name: | cvbf_BankOperatedBankingCentersNumber
Namespace Prefix: | cvbf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Bank operated wealth management offices, number. + References No definition available. + Details
Name: | cvbf_BankOperatedWealthManagementOfficesNumber
Namespace Prefix: | cvbf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of inactive subsidiaries. + References No definition available. + Details
Name: | cvbf_NumberOfInactiveSubsidiaries
Namespace Prefix: | cvbf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Schedule Of Description Of Company [Line Items] + References No definition available. + Details
Name: | cvbf_ScheduleOfDescriptionOfCompanyLineItems
Namespace Prefix: | cvbf_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=cvbf_CommunityBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |