Consolidated Balance Sheet (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 1,818,861	$ 1,605,439
Interest-bearing deposits at banks	12,495,524	8,105,197
Federal funds sold	200
Trading account	614,256	185,584
Investment securities (includes pledged securities that can be sold or repledged of $196,419 at September 30, 2019; $487,365 at December 31, 2018)
Available for sale (cost: $6,934,709 at September 30, 2019; $8,869,423 at December 31, 2018)	6,985,417	8,682,509
Held to maturity (fair value: $3,075,304 at September 30, 2019; $3,255,483 at December 31, 2018)	3,031,299	3,316,640
Equity and other securities (cost: $619,894 at September 30, 2019; $677,187 at December 31, 2018)	660,867	693,664
Total investment securities	10,677,583	12,692,813
Loans and leases	90,084,230	88,733,492
Unearned discount	(261,037)	(267,015)
Loans and leases, net of unearned discount	89,823,193	88,466,477
Allowance for credit losses	(1,038,437)	(1,019,444)
Loans and leases, net	88,784,756	87,447,033
Premises and equipment	1,074,181	647,408
Goodwill	4,593,112	4,593,112
Core deposit and other intangible assets	33,339	47,067
Accrued interest and other assets	5,409,114	4,773,750
Total assets	125,500,926	120,097,403
Liabilities
Noninterest-bearing deposits	31,766,724	32,256,668
Savings and interest-checking deposits	55,581,533	50,963,744
Time deposits	6,203,679	6,124,254
Deposits at Cayman Islands office	1,561,997	811,906
Total deposits	95,113,933	90,156,572
Short-term borrowings	5,513,896	4,398,378
Accrued interest and other liabilities	2,090,762	1,637,348
Long-term borrowings	7,002,524	8,444,914
Total liabilities	109,721,115	104,637,212
Shareholders' equity
Preferred stock, $1.00 par, 1,000,000 shares authorized; Issued and outstanding: Liquidation preference of $1,000 per share: 350,000 shares at September 30, 2019 and 731,500 shares at December 31, 2018; Liquidation preference of $10,000 per share: 90,000 shares at September 30, 2019 and 50,000 shares at December 31, 2018	1,250,000	1,231,500
Common stock, $.50 par, 250,000,000 shares authorized, 159,741,898 shares issued at September 30, 2019; 159,765,044 shares issued at December 31, 2018	79,871	79,883
Common stock issuable, 21,461 shares at September 30, 2019; 24,563 shares at December 31, 2018	1,547	1,726
Additional paid-in capital	6,584,705	6,579,342
Retained earnings	12,490,233	11,516,672
Accumulated other comprehensive income (loss), net	(80,308)	(420,081)
Treasury stock — common, at cost — 27,485,996 shares at September 30, 2019; 21,255,275 shares at December 31, 2018	(4,546,237)	(3,528,851)
Total shareholders’ equity	15,779,811	15,460,191
Total liabilities and shareholders’ equity	$ 125,500,926	$ 120,097,403