XML 107 R91.htm IDEA: XBRL DOCUMENT v3.20.4

Deposits - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deposits [Abstract]
Balance of accounts with more than $2500,000 balance	$ 100.3	$ 107.9

X

- Definition

Time deposits 250000 or more.

+ References

No definition available.

+ Details

Name:	cvbf_TimeDeposits250000OrMore
Namespace Prefix:	cvbf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_DepositsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration