CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Premises and equipment held for sale		$ 9,700	$ 19,600
Liquidation preference per share (in dollars per share)		$ 100,000	$ 100,000
Preferred stock, shares authorized (in shares)		1,000	1,000
Preferred stock, shares issued (in shares)		1,000	1,000
Common stock, par value (in dollars per share)		$ 0.625	$ 0.625
Common stock, shares authorized (in shares)		400,000,000	400,000,000
Common stock, shares issued (in shares)		311,469,056	318,573,400
Residential real estate foreclosure	[1]	$ 17,838	$ 25,290
Residential Real Estate
Held-for-sale consumer mortgage loans secured by residential real estate in process of foreclosure		18,800	28,600
Residential real estate foreclosure		9,200	9,700
Loans Held For Sale, Residential Real Estate | Residential Real Estate
Held-for-sale consumer mortgage loans secured by residential real estate in process of foreclosure		$ 6,800	$ 8,400

[1] December 31, 2019 and 2018 include $9.2 million and $9.7 million, respectively, of foreclosed residential real estate.