XML 45 R34.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items] |
Cumulative adjustment upon adoption of ASU 2018-02 | $ 0
Accumulated Other Comprehensive Income [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Cumulative adjustment upon adoption of ASU 2018-02 | $ 356

X
- Definition Summary Of Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | cvbf_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | cvbf_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax Cuts and Jobs Act of 2017, reclassification from AOCI to retained earnings tax effect. + References No definition available. + Details
Name: | cvbf_TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect
Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedOtherComprehensiveIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |