Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest income
Interest and fees on loans	$ 191,895	$ 260,784	$ 416,681	$ 519,637
Interest and dividends on investment securities
Taxable	16,103	26,710	36,375	55,764
Tax-exempt	14,616	14,643	29,498	28,459
Other interest	2,231	3,995	5,535	8,221
Total interest income	224,845	306,133	488,090	612,081
Interest expense
Interest on deposits	13,178	67,050	49,844	129,823
Interest on federal funds purchased and securities sold under agreements to repurchase	51	286	420	913
Interest on other short-term funding	683	37	721	88
Interest on FHLB advances	15,470	17,744	33,096	37,298
Interest on long-term funding	5,591	7,396	11,195	14,792
Total interest expense	34,973	92,513	95,276	182,914
Net interest income	189,872	213,619	392,814	429,167
Provision for credit losses	61,000	8,000	114,001	14,000
Net interest income after provision for credit losses	128,872	205,619	278,813	415,167
Noninterest income
Noninterest Income In Scope of Topic 606	66,933	72,703	138,282	145,441
Capital markets, net	6,910	4,726	14,845	7,916
Mortgage banking, net	12,263	9,466	18,407	14,178
Bank and corporate owned life insurance	3,625	3,352	6,719	7,144
Asset gains (losses), net(b)	157,361	871	157,284	1,438
Investment securities gains (losses), net	3,096	463	9,214	2,143
Other	2,737	2,547	5,090	5,807
Total noninterest income	254,490	95,837	352,796	187,040
Noninterest expense
Personnel	111,350	123,228	225,551	243,279
Technology	21,174	20,114	41,973	39,126
Occupancy	14,464	13,830	30,532	30,302
Business development and advertising	3,556	6,658	9,382	13,293
Equipment	5,312	5,577	10,751	11,245
Legal and professional	5,058	4,668	10,217	8,619
Loan and foreclosure costs	3,605	1,814	6,725	3,961
FDIC assessment	5,250	4,500	10,750	8,250
Other intangible amortization	2,872	2,324	5,686	4,551
Other	10,249	11,331	21,791	22,459
Total noninterest expense	183,407	197,779	375,598	389,450
Income (loss) before income taxes	199,955	103,678	256,012	212,756
Income tax expense	51,238	19,017	61,457	41,409
Net income	148,718	84,661	194,555	171,347
Preferred stock dividends	4,144	3,801	7,945	7,601
Net income available to common equity	$ 144,573	$ 80,860	$ 186,611	$ 163,746
Earnings per common share
Basic	$ 0.94	$ 0.49	$ 1.21	$ 1.00
Diluted	$ 0.94	$ 0.49	$ 1.20	$ 0.99
Average common shares outstanding
Basic	152,393	162,180	153,547	163,049
Diluted	153,150	163,672	154,360	164,518
Huntington National Bank
Noninterest income
Related acquisition asset losses net of asset gains		less than $1 million		less than $1 million
Insurance commissions and fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 22,430	$ 22,985	$ 45,038	$ 48,449
Wealth management fees(a)
Noninterest income
Noninterest Income In Scope of Topic 606	20,916	20,691	41,732	40,870
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	11,484	15,426	26,706	30,542
Card-based fees
Noninterest income
Noninterest Income In Scope of Topic 606	8,922	10,177	18,529	19,472
Service charges and account fees	8,893	10,131	18,490	19,392
Other fee-based revenue
Noninterest income
Noninterest Income In Scope of Topic 606	3,181	3,424	6,277	6,108
Service charges and account fees	4,774	5,178	9,272	9,161
Risk Management and Shared Services
Noninterest income
Asset gains (losses), net(b)	163,000		163,000
Operating Segments | Risk Management and Shared Services
Interest expense
Net interest income	17,929	22,375	38,190	44,306
Provision for credit losses	41,858	(9,211)	77,579	(20,480)
Noninterest income
Total noninterest income	165,242	2,447	171,465	8,228
Noninterest expense
Acquisition related costs(c)	518	3,734	2,238	4,366
Total noninterest expense	10,280	21,634	34,779	45,456
Income (loss) before income taxes	109,802	2,919	68,129	12,887
Income tax expense	33,950	(1,127)	25,255	1,466
Net income	$ 75,853	$ 4,047	$ 42,874	$ 11,422