Consolidated Balance Sheets - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and due from banks		$ 523,435	$ 507,187
Interest-bearing deposits in other financial institutions		236,010	221,226
Federal funds sold and securities purchased under agreements to resell		100	148,285
Investment securities held to maturity, at amortized cost(a)	[1]	2,200,419	2,740,511
Investment securities available for sale, at fair value(a)	[1]	3,436,289	3,946,941
Equity securities		15,096	1,568
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost		207,443	250,534
Loans		22,754,710	22,940,429
Allowance for loan losses		(214,425)	(238,023)
Loans, net		22,540,285	22,702,406
Bank and corporate owned life insurance		670,739	663,203
Investment in unconsolidated subsidiaries		256,220	161,181
Premises and equipment, net		436,268	363,225
Goodwill		1,176,230	1,169,023
Mortgage servicing rights, net		68,168	68,193
Other intangible assets, net		91,089	75,836
Other assets(b)		589,420	516,538
Total assets		32,596,460	33,615,122
Liabilities and Stockholders' Equity
Noninterest-bearing demand deposits		5,503,223	5,698,530
Interest-bearing deposits		18,919,339	19,198,863
Total deposits		24,422,562	24,897,393
Federal funds purchased and securities sold under agreements to repurchase		78,028	111,651
Commercial paper		30,416	45,423
FHLB advances		2,877,727	3,574,371
Other long-term funding		796,799	795,611
Accrued expenses and other liabilities(b)	[2]	470,073	409,787
Total liabilities		28,675,605	29,834,235
Stockholders’ Equity
Preferred equity		256,716	256,716
Common stock		1,752	1,752
Surplus		1,713,971	1,712,615
Retained earnings		2,341,158	2,181,414
Accumulated other comprehensive income (loss)		(36,953)	(124,972)
Treasury stock, at cost		(355,791)	(246,638)
Total common equity		3,664,139	3,524,171
Total stockholders’ equity		3,920,855	3,780,888
Total liabilities and stockholders’ equity		$ 32,596,460	$ 33,615,122
Preferred shares issued		264,458	264,458
Preferred shares authorized (par value $1.00 per share)		750,000	750,000
Common shares issued		175,216,409	175,216,409
Common shares authorized (par value $0.01 per share)		250,000,000	250,000,000
Treasury shares of common stock		15,925,525	10,775,938
Transfer of securities from held to maturity to available for sale		$ 692,000
Residential loans held for sale
Assets
Loans Receivable Held-for-sale, Amount		137,655	$ 64,321
Loans		7,954,801	8,277,712
Commercial loans held for sale
Assets
Loans Receivable Held-for-sale, Amount		11,597	14,943
Loans		13,570,932	13,405,072
Total consumer
Assets
Loans		$ 9,183,778	$ 9,535,357

[1] (a) As permitted by ASU 2019-04, which was adopted during the third quarter of 2019, the Corporation made a one-time election to transfer municipal securities with a book value of $692 million from held to maturity to available for sale.

[2] (b) During the third quarter of 2019, the Corporation made a change in accounting policy to offset derivative assets and liabilities and cash collateral with the same counterparty where it has a legally enforceable master netting agreement in place. The change had no impact on either earnings or equity. The Corporation believes that this change is a preferable method of accounting as it provides a better reflection of the assets and liabilities on the face of the consolidated balance sheets. Adoption of this change was voluntary and has been adopted retrospectively with all prior periods presented herein revised.