XML 41 R30.htm IDEA: XBRL DOCUMENT v3.20.2

Business - Additional Information (Detail)	Sep. 30, 2020 Location Loan Subsidiary
Schedule Of Description Of Company [Line Items]
Number of inactive subsidiaries | Subsidiary	1
Bank operated banking centers	57
Bank operated trust office locations, number	3
Number of loan production office | Loan	1

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

Number of loan production office.

+ References

No definition available.

+ Details

Name:	cvbf_NumberOfLoanProductionOffice
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