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Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Loan, Including PCI Loans by Internal Risk Ratings (Parenthetical) (Detail) - USD ($) | 3 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2018
Payments to Acquire Loans Receivable | $ 19,000,000.0 |
Financial Asset Acquired with Credit Deterioration [Member] |  |
PCI Loans |  | $ 17,200,000
Financial Asset Acquired with Credit Deterioration [Member] | Pass [Member] |  |
PCI Loans |  | 15,800,000
Financial Asset Acquired with Credit Deterioration [Member] | Special Mention [Member] |  |
PCI Loans |  | 1,200,000
Financial Asset Acquired with Credit Deterioration [Member] | Substandard [Member] |  |
PCI Loans |  | 224,000,000,000
Financial Asset Acquired with Credit Deterioration [Member] | Doubtful [Member] |  |
PCI Loans |  | $ 0

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- Definition Gross purchased credit impaired loans. + References No definition available. + Details
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Namespace Prefix: | cvbf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The cash outflow for the purchase of loan receivable arising from the financing of goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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