Consolidated Balance Sheet (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Pledged securities that can be sold or repledged	$ 1,829,142	$ 96,128
Investment securities, available for sale, amortized cost	8,879,416	3,849,347
Investment securities, held to maturity, fair value	12,696,115	2,771,290
Equity and other securities, cost	$ 720,530	$ 461,516
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	10,000,000
Preferred stock, liquidation preference per share	$ 25
Common stock, par value	$ 0.50	$ 0.50
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	179,436,779	159,741,898
Common stock issuable, shares	13,968	15,769
Treasury stock, common shares	3,481,639	31,052,845
Series A Series C Series And E Preferred Stock [Member]
Preferred stock, shares issued	350,000	350,000
Preferred stock, shares outstanding	350,000	350,000
Preferred stock, liquidation preference per share	$ 1,000	$ 1,000
Series F And Series G Preferred Stock [Member]
Preferred stock, shares issued	140,000	140,000
Preferred stock, shares outstanding	140,000	140,000
Preferred stock, liquidation preference per share	$ 10,000	$ 10,000