Organization, Basis of Presentation, and Impact of Recent Accounting Pronouncements - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022 Branch $ / shares	Dec. 31, 2021 $ / shares
Organization and Basis of Presentation [Line Items]
Common stock, par | $ / shares	$ 0.01	$ 0.01
Description of nine stock splits	0.93 per share on a split-adjusted basis, reflecting the impact of nine stock splits between 1994 and 2004
New York Community Bank
Organization and Basis of Presentation [Line Items]
Number of branches | Branch	237
New York Community Bank | Corporate Segment
Organization and Basis of Presentation [Line Items]
Number of branches | Branch	18
New York Community Bank | Corporate and Other
Organization and Basis of Presentation [Line Items]
Number of branches | Branch	219
IPO
Organization and Basis of Presentation [Line Items]
Shares issued, price per share | $ / shares	$ 25.00
Shares issued, price per share, split adjusted basis | $ / shares	$ 0.93