| Document and Entity Information | Feb. 07, 2024 |
| Document And Entity Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Document Period End Date | Feb. 07, 2024 |
| Entity Registrant Name | NEW YORK COMMUNITY BANCORP, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-31565 |
| Entity Tax Identification Number | 06-1377322 |
| Entity Address Address Line 1 | 102 Duffy Avenue |
| Entity Address City Or Town | Hicksville |
| Entity Address State Or Province | NY |
| Entity Address Postal Zip Code | 11801 |
| City Area Code | 516 |
| Local Phone Number | 683-4100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Description | This Amendment No. 1 to the Current Report on Form 8-K amends Item 7.01 of the Current Report on Form 8-K filed on February 7, 2024 (the “Original Form 8-K”) solely to update the date of the 2024 Annual Meeting of Shareholders of New York Community Bancorp, Inc. (the “Company”), which has been announced by the Company in a press release and is furnished as Exhibit 99.1 to this Amendment No. 1. No other changes have been made to the Original Form 8-K. |
| Entity Central Index Key | 0000910073 |
| Common Stock, $0.01 par value per share [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, $0.01 par value per share |
| Trading Symbol | NYCB |
| Security Exchange Name | NYSE |
| Bifurcated Option Note Unit SecuritiES SM [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Bifurcated Option Note Unit SecuritiES |
| Trading Symbol | SM |
| Security Exchange Name | NYSE |
| Fixed-to-Floating Rate Series A Noncumulative Perpetual Preferred Stock, $0.01 par value [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Fixed-to-Floating Rate Series A Noncumulative Perpetual Preferred Stock, $0.01 par value |
| Trading Symbol | NYCB PA |
| Security Exchange Name | NYSE |
