Consolidated Statements of Income - USD ($) shares in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Interest income
Interest and fees on loans		$ 224,786,000	$ 258,853,000
Interest and dividends on investment securities
Taxable		20,272,000	29,053,000
Tax-exempt		14,882,000	13,816,000
Other interest		3,304,000	4,226,000
Total interest income		263,244,000	305,948,000
Interest expense
Interest on deposits		36,666,000	62,773,000
Interest on federal funds purchased and securities sold under agreements to repurchase		368,000	627,000
Interest on other short-term funding		39,000	51,000
Interest on FHLB advances		17,626,000	19,554,000
Interest on long-term funding		5,604,000	7,396,000
Total interest expense		60,303,000	90,401,000
Net interest income		202,942,000	215,547,000
Provision for credit losses		53,001,000	6,000,000
Net interest income after provision for credit losses		149,941,000	209,547,000
Noninterest income
Noninterest Income In Scope of Topic 606		71,348,000	72,738,000
Capital markets, net		7,935,000	3,189,000
Mortgage banking, net		6,143,000	4,712,000
Bank and corporate owned life insurance		3,094,000	3,792,000
Asset gains (losses), net		(77,000)	567,000
Investment securities gains (losses), net		6,118,000	1,680,000
Other		2,352,000	3,260,000
Total noninterest income		98,306,000	91,202,000
Noninterest expense
Personnel		114,200,000	120,050,000
Technology		20,799,000	19,012,000
Occupancy		16,069,000	16,472,000
Business development and advertising		5,826,000	6,636,000
Equipment		5,439,000	5,668,000
Legal and professional		5,160,000	3,951,000
Loan and foreclosure costs		3,120,000	2,146,000
FDIC assessment		5,500,000	3,750,000
Other intangible amortization		2,814,000	2,226,000
Other		11,543,000	11,128,000
Total noninterest expense		192,191,000	191,671,000
Income (loss) before income taxes		56,056,000	109,078,000
Income tax expense		10,219,000	22,392,000
Net income		45,838,000	86,686,000
Preferred stock dividends		3,801,000	3,801,000
Net income available to common equity		$ 42,037,000	$ 82,885,000
Earnings per common share
Basic		$ 0.27	$ 0.50
Diluted		$ 0.27	$ 0.50
Average common shares outstanding
Basic		154,701	163,928
Diluted		155,619	165,433
Insurance commissions and fees
Noninterest income
Noninterest Income In Scope of Topic 606		$ 22,608,000	$ 25,464,000
Wealth management fees(a)
Noninterest income
Noninterest Income In Scope of Topic 606	[1]	20,816,000	20,180,000
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606		15,222,000	15,115,000
Card-based fees
Noninterest income
Noninterest Income In Scope of Topic 606		9,607,000	9,295,000
Service charges and account fees		9,597,000	9,261,000
Other fee-based revenue
Noninterest income
Noninterest Income In Scope of Topic 606		3,096,000	2,684,000
Service charges and account fees		4,497,000	3,983,000
Operating Segments | Risk Management and Shared Services
Interest expense
Net interest income		14,537,000	11,567,000
Provision for credit losses		34,719,000	(12,518,000)
Noninterest income
Total noninterest income		5,854,000	5,533,000
Noninterest expense
Acquisition related costs(b)	[2]	1,721,000	632,000
Total noninterest expense		23,162,000	22,414,000
Income (loss) before income taxes		(43,838,000)	6,384,000
Income tax expense		(9,149,000)	1,840,000
Net income		$ (34,689,000)	$ 4,543,000

[1] (a) Includes trust, asset management, brokerage, and annuity fees.

[2] (b) Includes Huntington branch and First Staunton acquisition related costs only.