Consolidated Balance Sheet (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 1,271,611	$ 1,605,439
Interest-bearing deposits at banks	8,791,753	8,105,197
Trading account	479,403	185,584
Investment securities (includes pledged securities that can be sold or repledged of $167,935 at June 30, 2019; $487,365 at December 31, 2018)
Available for sale (cost: $7,359,445 at June 30, 2019; $8,869,423 at December 31, 2018)	7,380,340	8,682,509
Held to maturity (fair value: $3,630,158 at June 30, 2019; $3,255,483 at December 31, 2018)	3,604,233	3,316,640
Equity and other securities (cost: $558,440 at June 30, 2019; $677,187 at December 31, 2018)	595,676	693,664
Total investment securities	11,580,249	12,692,813
Loans and leases	90,142,482	88,733,492
Unearned discount	(264,424)	(267,015)
Loans and leases, net of unearned discount	89,878,058	88,466,477
Allowance for credit losses	(1,029,867)	(1,019,444)
Loans and leases, net	88,848,191	87,447,033
Premises and equipment	1,066,511	647,408
Goodwill	4,593,112	4,593,112
Core deposit and other intangible assets	38,428	47,067
Accrued interest and other assets	4,885,637	4,773,750
Total assets	121,554,895	120,097,403
Liabilities
Noninterest-bearing deposits	30,747,946	32,256,668
Savings and interest-checking deposits	53,221,672	50,963,744
Time deposits	6,346,551	6,124,254
Deposits at Cayman Islands office	1,364,855	811,906
Total deposits	91,681,024	90,156,572
Short-term borrowings	4,611,390	4,398,378
Accrued interest and other liabilities	1,915,147	1,637,348
Long-term borrowings	7,655,507	8,444,914
Total liabilities	105,863,068	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: 731,500 shares at June 30, 2019 and December 31, 2018; Liquidation preference of $10,000 per share: 50,000 shares at June 30, 2019 and December 31, 2018	1,231,500	1,231,500
Common stock, $.50 par, 250,000,000 shares authorized, 159,741,898 shares issued at June 30, 2019; 159,765,044 shares issued at December 31, 2018	79,871	79,883
Common stock issuable, 21,327 shares at June 30, 2019; 24,563 shares at December 31, 2018	1,526	1,726
Additional paid-in capital	6,577,603	6,579,342
Retained earnings	12,162,278	11,516,672
Accumulated other comprehensive income (loss), net	(112,958)	(420,081)
Treasury stock — common, at cost — 25,563,347 shares at June 30, 2019; 21,255,275 shares at December 31, 2018	(4,247,993)	(3,528,851)
Total shareholders’ equity	15,691,827	15,460,191
Total liabilities and shareholders’ equity	$ 121,554,895	$ 120,097,403