Organization and Basis of Presentation - Additional Information (Details)	12 Months Ended
	Dec. 31, 2021 Branch $ / shares	Dec. 31, 2020 $ / shares
Organization and Basis of Presentation [Line Items]
Common stock, par	$ 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
IPO
Organization and Basis of Presentation [Line Items]
Shares issued, price per share	$ 25.00
Shares issued, price per share, split adjusted basis	$ 0.93