| Document and Entity Information | Apr. 01, 2022 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | true |
| Entity Central Index Key | 0000714310 |
| Document Type | 8-K/A |
| Document Period End Date | Apr. 1, 2022 |
| Entity Registrant Name | Valley National Bancorp |
| Entity Incorporation State Country Code | NJ |
| Entity File Number | 1-11277 |
| Entity Tax Identification Number | 22-2477875 |
| Entity Address, Address Line One | One Penn Plaza |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10119 |
| City Area Code | (973) |
| Local Phone Number | 305-8800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Description | On April 1, 2022 (“Closing Date”), Valley National Bancorp (“Valley”) filed a Current Report on Form 8-K (the “Original Report”) to report under Item 2.01 thereof that effective as of the Closing Date, Valley completed its previously announced acquisition of Bank Leumi le-Israel Corporation, a New York corporation (“Bank Leumi USA”), pursuant to the Agreement and Plan of Merger, dated as of September 22, 2021 (the “Merger Agreement”), by and among Valley, Bank Leumi USA and Volcano Merger Sub Corporation, a New York corporation and subsidiary of Valley (“Merger Sub”). Pursuant to the Merger Agreement, on the Closing Date, (i) Merger Sub merged with and into Bank Leumi USA, with Bank Leumi USA continuing as the surviving corporation (the “Merger”), (ii) following the effective time of the Merger, Bank Leumi USA merged with and into Valley, with Valley continuing as the surviving corporation (the “Follow-On Merger”) and (iii) following the effective time of the Follow-On Merger, Bank Leumi USA’s bank subsidiary, a New York state-chartered bank, merged with and into Valley National Bank, a national bank and a wholly owned subsidiary of Valley (“VNB”), with VNB continuing as the surviving bank. In response to Items 9.01(a) and (b) of the Original Report, Valley stated that it would file the required historical financial statements of Bank Leumi USA and pro forma financial information by amendment. This Amendment No. 1 to the Original Report is being filed to provide the required financial statements and pro forma financial information. |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, no par value |
| Trading Symbol | VLY |
| Security Exchange Name | NASDAQ |
| Not Cumulative Perpetual Preferred Stock Series A [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Non-Cumulative Perpetual Preferred Stock, Series A, no par value |
| Trading Symbol | VLYPP |
| Security Exchange Name | NASDAQ |
| Not Cumulative Perpetual Preferred Stock Series B [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Non-Cumulative Perpetual Preferred Stock, Series B, no par value |
| Trading Symbol | VLYPO |
| Security Exchange Name | NASDAQ |
