$HBAN
HUNTINGTON BANCSHARES INC /MD/ Stock $hban

$hban Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000004919620000010 Filed on February 14, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$1.011B	$1.056B	$1.007B
YoY Change	-4.26%	18.12%	15.35%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$78.00M	$143.0M	$122.0M
YoY Change	-45.45%	35.03%	26.69%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$231.0M	$223.0M	$205.0M
YoY Change	3.59%	79.84%	78.26%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$372.0M	$391.0M	$440.0M
YoY Change	-4.86%	-5.1%	20.55%
Income Tax	$55.00M	$57.00M	$62.00M
% Of Pretax Income	14.78%	14.58%	14.09%
Net Earnings	$317.0M	$334.0M	$378.0M
YoY Change	-5.09%	-22.69%	37.45%
Net Earnings / Revenue	31.36%	31.63%	37.54%
Basic Earnings Per Share	$0.29	$0.30	$0.33
Diluted Earnings Per Share	$0.28	$0.29	$0.33
COMMON SHARES
Basic Shares Outstanding	1.019B shares		1.085B shares
Diluted Shares Outstanding			1.104B shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.170B	$2.672B	$1.299B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$763.0M	$790.0M	$827.0M
YoY Change	-3.42%	-8.56%	-3.08%
Goodwill	$1.990B	$1.989B	$1.993B
YoY Change	0.05%	-0.2%	0.01%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$109.0B	$108.8B	$105.7B
YoY Change	0.2%	4.41%	3.59%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$1.884B	$1.859B	$1.855B
YoY Change	1.34%	7.02%	22.04%
Deferred Revenue
YoY Change
Short-Term Debt	$2.606B	$2.017B	$1.348B
YoY Change	29.2%	-60.11%	-26.32%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.884B	$1.859B	$1.855B
YoY Change	1.34%	7.02%	22.04%
LONG-TERM LIABILITIES
Long-Term Debt	$9.849B	$8.625B	$9.385B
YoY Change	14.19%	-6.31%	2.0%
Other Long-Term Liabilities	$521.0M	$404.0M	$441.0M
YoY Change	28.96%	22.05%	50.0%
Total Long-Term Liabilities	$10.37B	$9.029B	$9.826B
YoY Change	14.85%	-5.33%	3.49%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.884B	$1.859B	$1.855B
Total Long-Term Liabilities	$10.37B	$9.029B	$9.826B
Total Liabilities	$97.21B	$97.68B	$94.72B
YoY Change	-0.48%	4.61%	3.76%
SHAREHOLDERS EQUITY
Retained Earnings	$2.088B	$1.361B	$1.196B
YoY Change	53.42%	131.46%	494.39%
Common Stock	$10.00M	$11.00M	$11.00M
YoY Change	-9.09%	0.0%	1.44%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$56.00M	$45.00M	$44.00M
YoY Change	24.44%	28.57%	25.24%
Treasury Stock Shares	4.538M shares	3.817M shares	3.722M shares
Shareholders Equity	$11.80B	$11.10B	$10.93B
YoY Change
Total Liabilities & Shareholders Equity	$109.0B	$108.8B	$105.7B
YoY Change	0.2%	4.41%	3.59%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$317.0M	$334.0M	$378.0M
YoY Change	-5.09%	-22.69%	37.45%
Depreciation, Depletion And Amortization	$78.00M	$143.0M	$122.0M
YoY Change	-45.45%	35.03%	26.69%
Cash From Operating Activities	$676.0M	$582.0M	$542.0M
YoY Change	16.15%	-31.34%	-1.02%
INVESTING ACTIVITIES
Capital Expenditures	-$25.00M	-$48.00M	-$24.00M
YoY Change	-47.92%	-2.83%	-25.0%
Acquisitions
YoY Change
Other Investing Activities	-$1.089B	-$1.638B	-$495.0M
YoY Change	-33.52%	-22.54%	-54.57%
Cash From Investing Activities	-$1.114B	-$1.686B	-$519.0M
YoY Change	-33.93%	-22.09%	-53.74%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-28.00M	2.477B	-106.0M
YoY Change	-101.13%	50.82%	-141.98%
NET CHANGE
Cash From Operating Activities	676.0M	582.0M	542.0M
Cash From Investing Activities	-1.114B	-1.686B	-519.0M
Cash From Financing Activities	-28.00M	2.477B	-106.0M
Net Change In Cash	-466.0M	1.373B	-83.00M
YoY Change	-133.94%	321.04%	-74.21%
FREE CASH FLOW
Cash From Operating Activities	$676.0M	$582.0M	$542.0M
Capital Expenditures	-$25.00M	-$48.00M	-$24.00M
Free Cash Flow	$701.0M	$630.0M	$566.0M
YoY Change	11.27%	-29.77%	-2.35%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000049196
CY2019	dei	Entity Registrant Name EntityRegistrantName	HUNTINGTON BANCSHARES INC/MD
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CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Entity File Number EntityFileNumber	1-34073
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	31-0724920
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	41 South High Street
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Columbus,
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	OH
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	43287
CY2019	dei	City Area Code CityAreaCode	614
CY2019	dei	Local Phone Number LocalPhoneNumber	480-2265
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CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
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CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1559000000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1524000000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	346000000	USD
CY2018	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	294000000	USD
CY2017	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	313000000	USD
CY2019	us-gaap	Equipment Expense EquipmentExpense	163000000	USD
CY2018	us-gaap	Equipment Expense EquipmentExpense	164000000	USD
CY2017	us-gaap	Equipment Expense EquipmentExpense	171000000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	159000000	USD
CY2018	us-gaap	Occupancy Net OccupancyNet	184000000	USD
CY2017	us-gaap	Occupancy Net OccupancyNet	212000000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	54000000	USD
CY2018	us-gaap	Professional Fees ProfessionalFees	60000000	USD
CY2017	us-gaap	Professional Fees ProfessionalFees	69000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	49000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	53000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	56000000	USD
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	37000000	USD
CY2018	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	53000000	USD
CY2017	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	60000000	USD
CY2019	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	34000000	USD
CY2018	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	63000000	USD
CY2017	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	78000000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	225000000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	217000000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	231000000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	2721000000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	2647000000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	2714000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1659000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1628000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1394000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	248000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	235000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	208000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1411000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1393000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1186000000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	74000000	USD
CY2018	us-gaap	Dividends Preferred Stock DividendsPreferredStock	70000000	USD
CY2017	us-gaap	Dividends Preferred Stock DividendsPreferredStock	76000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1337000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1323000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1110000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1038840000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1081542000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1084686000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1056079000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1105985000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1136186000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.29
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.22
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.27
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.20
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2019	hban	Impairment Losses On Investment Securities ImpairmentLossesOnInvestmentSecurities	0	USD
CY2018	hban	Impairment Losses On Investment Securities ImpairmentLossesOnInvestmentSecurities	0	USD
CY2017	hban	Impairment Losses On Investment Securities ImpairmentLossesOnInvestmentSecurities	4000000	USD
CY2019	hban	Noncredit Related Losses On Securities Not Expected To Be Sold NoncreditRelatedLossesOnSecuritiesNotExpectedToBeSold	0	USD
CY2018	hban	Noncredit Related Losses On Securities Not Expected To Be Sold NoncreditRelatedLossesOnSecuritiesNotExpectedToBeSold	0	USD
CY2017	hban	Noncredit Related Losses On Securities Not Expected To Be Sold NoncreditRelatedLossesOnSecuritiesNotExpectedToBeSold	0	USD
CY2019	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2017	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	4000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1411000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1393000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1186000000	USD
CY2019	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	0	USD
CY2017	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	335000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-84000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-39000000	USD
CY2019	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	335000000	USD
CY2018	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-84000000	USD
CY2017	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-37000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease After Adjustments And Tax Parent OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTaxParent	23000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	5000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-4000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	353000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-80000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-34000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1764000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1313000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1152000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	11102000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1411000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	353000000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	441000000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	611000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	83000000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	18000000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	10000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	11795000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	10814000000	USD
CY2018Q4	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets1 NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1	1000000	USD
CY2018Q4	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets1 NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1	1000000	USD
CY2018Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1393000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-80000000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	939000000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	541000000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	0	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	78000000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	41000000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-7000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	11102000000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	10308000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1186000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-34000000	USD
CY2017	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	260000000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	379000000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	92000000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	19000000	USD
CY2017	hban	Tax Cutsand Job Actsof2017 Reclassificationfrom Aoc Ito Retained Earnings TaxCutsandJobActsof2017ReclassificationfromAOCItoRetainedEarnings	0	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	4000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	10814000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1411000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1393000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1186000000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	287000000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	235000000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	201000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	386000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	493000000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	413000000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	83000000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	78000000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	92000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	23000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	63000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	168000000	USD
CY2019	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	32000000	USD
CY2018	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	11000000	USD
CY2017	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-47000000	USD
CY2019	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	214000000	USD
CY2018	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	301000000	USD
CY2017	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-12000000	USD
CY2019	hban	Accrued Income And Other Assets AccruedIncomeAndOtherAssets	593000000	USD
CY2018	hban	Accrued Income And Other Assets AccruedIncomeAndOtherAssets	235000000	USD
CY2017	hban	Accrued Income And Other Assets AccruedIncomeAndOtherAssets	420000000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	194000000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	22000000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	233000000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	11000000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-22000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-29000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1574000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1726000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1954000000	USD
CY2019	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	-112000000	USD
CY2018	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	90000000	USD
CY2017	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	39000000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	15000000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2124000000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2109000000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1994000000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	1021000000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	743000000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	1054000000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	3903000000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1419000000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2490000000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	6036000000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2485000000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	5429000000	USD
CY2019	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	1519000000	USD
CY2018	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	338000000	USD
CY2017	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	1356000000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	1049000000	USD
CY2018	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	697000000	USD
CY2017	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	603000000	USD
CY2019	hban	Finance Principal Lease Payments FinancePrincipalLeasePayments	714000000	USD
CY2018	hban	Finance Principal Lease Payments FinancePrincipalLeasePayments	0	USD
CY2017	hban	Finance Principal Lease Payments FinancePrincipalLeasePayments	0	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	2149000000	USD
CY2018	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	5333000000	USD
CY2017	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	3680000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	107000000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	110000000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	194000000	USD
CY2019	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	445000000	USD
CY2018	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	542000000	USD
CY2017	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	405000000	USD
CY2019	hban	Netcashpaidforbranchdisposition Netcashpaidforbranchdisposition	-548000000	USD
CY2018	hban	Netcashpaidforbranchdisposition Netcashpaidforbranchdisposition	0	USD
CY2017	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-228000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-102000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-18000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1877000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3663000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4866000000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-1702000000	USD
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	7733000000	USD
CY2017	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1433000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	586000000	USD
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-3025000000	USD
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	1371000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1796000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2229000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1891000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	743000000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2798000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	948000000	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	74000000	USD
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	70000000	USD
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	76000000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	597000000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	514000000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	349000000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	441000000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	939000000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	260000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	495000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	26000000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	27000000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	26000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	2000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	5000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	11000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1199000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3089000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3047000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1502000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1152000000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	135000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2672000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1520000000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1385000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1170000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2672000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1520000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	989000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	742000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	409000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	111000000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-52000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	84000000	USD
CY2019	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	963000000	USD
CY2018	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	818000000	USD
CY2017	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	660000000	USD
CY2019	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	19000000	USD
CY2018	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	51000000	USD
CY2017	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	12000000	USD
CY2019	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	19000000	USD
CY2018	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	20000000	USD
CY2017	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	29000000	USD
CY2019	hban	Held To Maturity Securities Transferred To Available For Sale HeldToMaturitySecuritiesTransferredToAvailableForSale	0	USD
CY2018	hban	Held To Maturity Securities Transferred To Available For Sale HeldToMaturitySecuritiesTransferredToAvailableForSale	2833000000	USD
CY2017	hban	Held To Maturity Securities Transferred To Available For Sale HeldToMaturitySecuritiesTransferredToAvailableForSale	0	USD
CY2019	hban	Available For Sale Securities Transferred To Held To Maturity Securities AvailableForSaleSecuritiesTransferredToHeldToMaturitySecurities	0	USD
CY2018	hban	Available For Sale Securities Transferred To Held To Maturity Securities AvailableForSaleSecuritiesTransferredToHeldToMaturitySecurities	2707000000	USD
CY2017	hban	Available For Sale Securities Transferred To Held To Maturity Securities AvailableForSaleSecuritiesTransferredToHeldToMaturitySecurities	993000000	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	<div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:11pt;"><span style="font-family:Calibri,sans-serif;font-size:11pt;font-weight:bold;">Nature of Operations —</span><span style="font-family:Calibri,sans-serif;font-size:11pt;"> Huntington Bancshares Incorporated (Huntington or the Company) is a multi-state diversified regional bank holding company organized under Maryland law in 1966 and headquartered in Columbus, Ohio. Through its subsidiaries, including its bank subsidiary, The Huntington National Bank (the Bank), Huntington is engaged in providing full-service commercial, small business, consumer banking services, mortgage banking services, automobile financing, recreational vehicle and marine financing, equipment leasing, investment management, trust services, brokerage services, insurance programs, and other financial products and services. Huntington’s banking offices are located in Ohio, Illinois, Michigan, Pennsylvania, Indiana, West Virginia, and Kentucky. Select financial services and other activities are also conducted in various other states. International banking services are available through the headquarters office in Columbus, Ohio.</span></div>
CY2019Q4	hban	Loansand Leases Receivable Allowance Numberof Reserves LoansandLeasesReceivableAllowanceNumberofReserves	2	reserve
CY2019Q4	hban	Loansand Leases Receivable Allowance Numberof Componentsof Reserve LoansandLeasesReceivableAllowanceNumberofComponentsofReserve	2	component
CY2019Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	525000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	428000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	75404000000	USD
CY2018Q4	hban	Loans Receivable Amortized Cost Disclosure LoansReceivableAmortizedCostDisclosure	74900000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	783000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	772000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	74621000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	74128000000	USD
CY2019Q4	us-gaap	Residual Value Of Leased Asset ResidualValueOfLeasedAsset	95000000	USD
CY2019Q4	us-gaap	Capital Leases Future Minimum Payments Receivable CapitalLeasesFutureMinimumPaymentsReceivable	1800000000	USD
CY2019Q4	us-gaap	Capital Leases Future Minimum Payments Receivable Current CapitalLeasesFutureMinimumPaymentsReceivableCurrent	700000000	USD
CY2019Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Two Years CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears	400000000	USD
CY2019Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Three Years CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears	300000000	USD
CY2019Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Four Years CapitalLeasesFutureMinimumPaymentsReceivableInFourYears	200000000	USD
CY2019Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Five Years CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears	100000000	USD
CY2019Q4	us-gaap	Capital Leases Future Minimum Payments Receivable Due Thereafter CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter	100000000	USD
CY2019	us-gaap	Direct Financing Lease Interest Income DirectFinancingLeaseInterestIncome	108000000	USD
CY2018	us-gaap	Direct Financing Lease Interest Income DirectFinancingLeaseInterestIncome	100000000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	468000000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	340000000	USD
CY2019	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	26000000	USD
CY2018	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	22000000	USD
CY2017	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	21000000	USD
CY2019	hban	Loans And Leases Receivable Interest Income Recorded On Nonaccrual Loans LoansAndLeasesReceivableInterestIncomeRecordedOnNonaccrualLoans	9000000	USD
CY2018	hban	Loans And Leases Receivable Interest Income Recorded On Nonaccrual Loans LoansAndLeasesReceivableInterestIncomeRecordedOnNonaccrualLoans	12000000	USD
CY2017	hban	Loans And Leases Receivable Interest Income Recorded On Nonaccrual Loans LoansAndLeasesReceivableInterestIncomeRecordedOnNonaccrualLoans	18000000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	788000000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	74535000000	USD
CY2019Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	81000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	75404000000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	171000000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	774000000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	74047000000	USD
CY2018Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	79000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	74900000000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	170000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	772000000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	362000000	USD
CY2019	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	97000000	USD
CY2019	hban	Provision For Reduction In Allowance Loanand Lease Losses. ProvisionForReductionInAllowanceLoanandLeaseLosses.	277000000	USD
CY2019	hban	Allowance For Loans Sold Or Transferred To Loans Held For Sale AllowanceForLoansSoldOrTransferredToLoansHeldForSale	1000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	783000000	USD
CY2018Q4	hban	Aulc Balance AULCBalance	96000000	USD
CY2019	hban	Provision For Reduction In Allowance Unfunded Loan Commitmentsand Lettersof Credit. ProvisionForReductionInAllowanceUnfundedLoanCommitmentsandLettersofCredit.	10000000	USD
CY2019	hban	Additionsto Unfunded Loan Commitmentsand Lettersof Credit Allowance AdditionstoUnfundedLoanCommitmentsandLettersofCreditAllowance	2000000	USD
CY2019Q4	hban	Aulc Balance AULCBalance	104000000	USD
CY2019Q4	hban	Acl Balance End Of Period AclBalanceEndOfPeriod	887000000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	691000000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	268000000	USD
CY2018	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	123000000	USD
CY2018	hban	Provision For Reduction In Allowance Loanand Lease Losses. ProvisionForReductionInAllowanceLoanandLeaseLosses.	226000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	772000000	USD
CY2017Q4	hban	Aulc Balance AULCBalance	87000000	USD
CY2018	hban	Provision For Reduction In Allowance Unfunded Loan Commitmentsand Lettersof Credit. ProvisionForReductionInAllowanceUnfundedLoanCommitmentsandLettersofCredit.	9000000	USD
CY2018Q4	hban	Aulc Balance AULCBalance	96000000	USD
CY2018Q4	hban	Acl Balance End Of Period AclBalanceEndOfPeriod	868000000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	638000000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	252000000	USD
CY2017	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	93000000	USD
CY2017	hban	Provision For Reduction In Allowance Loanand Lease Losses. ProvisionForReductionInAllowanceLoanandLeaseLosses.	212000000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	691000000	USD
CY2016Q4	hban	Aulc Balance AULCBalance	98000000	USD
CY2017	hban	Provision For Reduction In Allowance Unfunded Loan Commitmentsand Lettersof Credit. ProvisionForReductionInAllowanceUnfundedLoanCommitmentsandLettersofCredit.	11000000	USD
CY2017Q4	hban	Aulc Balance AULCBalance	87000000	USD
CY2017Q4	hban	Acl Balance End Of Period AclBalanceEndOfPeriod	778000000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	69000000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	714000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	783000000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	1174000000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	74149000000	USD
CY2019Q4	hban	Financing Receivable Evaluated For Impairment FinancingReceivableEvaluatedForImpairment	75323000000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	43000000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	729000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	772000000	USD
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	1107000000	USD
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	73714000000	USD
CY2018Q4	hban	Financing Receivable Evaluated For Impairment FinancingReceivableEvaluatedForImpairment	74821000000	USD
CY2019	hban	Loans And Leases Receivable Impaired Interest Lost On Troubled Debt Restructured Loans LoansAndLeasesReceivableImpairedInterestLostOnTroubledDebtRestructuredLoans	52000000	USD
CY2018	hban	Loans And Leases Receivable Impaired Interest Lost On Troubled Debt Restructured Loans LoansAndLeasesReceivableImpairedInterestLostOnTroubledDebtRestructuredLoans	51000000	USD
CY2017	hban	Loans And Leases Receivable Impaired Interest Lost On Troubled Debt Restructured Loans LoansAndLeasesReceivableImpairedInterestLostOnTroubledDebtRestructuredLoans	49000000	USD
CY2019	us-gaap	Loans And Leases Receivable Impaired Troubled Debt Interest Income LoansAndLeasesReceivableImpairedTroubledDebtInterestIncome	49000000	USD
CY2018	us-gaap	Loans And Leases Receivable Impaired Troubled Debt Interest Income LoansAndLeasesReceivableImpairedTroubledDebtInterestIncome	48000000	USD
CY2017	us-gaap	Loans And Leases Receivable Impaired Troubled Debt Interest Income LoansAndLeasesReceivableImpairedTroubledDebtInterestIncome	45000000	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	5229	contract
CY2019	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	283000000	USD
CY2018	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	6391	contract
CY2018	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	539000000	USD
CY2019	hban	Financing Receivable Modifications Effectof Modification FinancingReceivableModificationsEffectofModification	2000000	USD
CY2018	hban	Financing Receivable Modifications Effectof Modification FinancingReceivableModificationsEffectofModification	15000000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Collateral For Secured Borrowings LoansAndLeasesReceivableCollateralForSecuredBorrowings	39600000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Collateral For Secured Borrowings LoansAndLeasesReceivableCollateralForSecuredBorrowings	46500000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	14063000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	137000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	51000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	14149000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	9070000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	119000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	3000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	9186000000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	441000000	USD
CY2019Q4	hban	Equity Securities Fvni Accumulated Gross Unrealized Gainbefore Tax EquitySecuritiesFVNIAccumulatedGrossUnrealizedGainbeforeTax	0	USD
CY2019Q4	hban	Equity Securities Fvni Accumulated Gross Unrealized Lossbefore Tax EquitySecuritiesFVNIAccumulatedGrossUnrealizedLossbeforeTax	0	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	441000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	14108000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	31000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	359000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13780000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	8565000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	281000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	8286000000	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	564000000	USD
CY2018Q4	hban	Equity Securities Fvni Accumulated Gross Unrealized Gainbefore Tax EquitySecuritiesFVNIAccumulatedGrossUnrealizedGainbeforeTax	1000000	USD
CY2018Q4	hban	Equity Securities Fvni Accumulated Gross Unrealized Lossbefore Tax EquitySecuritiesFVNIAccumulatedGrossUnrealizedLossbeforeTax	0	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	565000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	231000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	229000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	186000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	185000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	1196000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1189000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	1057000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1039000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	1594000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	1606000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	1838000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	1802000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	11042000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	11125000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	11027000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	10754000000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	14063000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	14149000000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	14108000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	13780000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	USD
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	17000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	17000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	11000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	11000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	300000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	305000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	362000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	356000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	8753000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	8864000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	8192000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	7919000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	9070000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	9186000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	8565000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	8286000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	3323000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	21000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	2041000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	30000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	5364000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	51000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	678000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	112000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	2000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	790000000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	3000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	2254000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	35000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	9679000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	324000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	11933000000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	359000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	141000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	7711000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	279000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	7852000000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	281000000	USD
CY2019Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Other Debt Facilities PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForOtherDebtFacilities	3800000000	USD
CY2018Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Other Debt Facilities PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForOtherDebtFacilities	4500000000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	11000000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	7000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	10000000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	35000000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	28000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	10000000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-24000000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-21000000	USD
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2019	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	0	USD
CY2017	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	4000000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	-24000000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	-21000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	-4000000	USD
CY2019	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	1000000	USD
CY2018	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	0	USD
CY2019	hban	Otherthantemporary Impairment Loss Equity Securities Portion Recognizedin Earnings OtherthantemporaryImpairmentLossEquitySecuritiesPortionRecognizedinEarnings	0	USD
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4
CY2017Q4	us-gaap	Goodwill Goodwill	1993000000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	1000000	USD
CY2018	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-5000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	1989000000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2019	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	1000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	1990000000	USD
CY2018	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-5000000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	425000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	193000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	232000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	496000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	215000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	281000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	41000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	38000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	36000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	34000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	32000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	210000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	233000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	47000000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1000000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	3000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	45000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	48000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	43000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	38000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	33000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	28000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	86000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	276000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	43000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	233000000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y3M21D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0456	Rate
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	54000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	40000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1723000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1705000000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	960000000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	915000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	763000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	790000000	USD
CY2019	hban	Total Depreciation And Amortization Of Premises And Equipment TotalDepreciationAndAmortizationOfPremisesAndEquipment	116000000	USD
CY2018	hban	Total Depreciation And Amortization Of Premises And Equipment TotalDepreciationAndAmortizationOfPremisesAndEquipment	130000000	USD
CY2017	hban	Total Depreciation And Amortization Of Premises And Equipment TotalDepreciationAndAmortizationOfPremisesAndEquipment	123000000	USD
CY2019	hban	Rental Income Credited To Occupancy Expense RentalIncomeCreditedToOccupancyExpense	11000000	USD
CY2018	hban	Rental Income Credited To Occupancy Expense RentalIncomeCreditedToOccupancyExpense	13000000	USD
CY2017	hban	Rental Income Credited To Occupancy Expense RentalIncomeCreditedToOccupancyExpense	14000000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2606000000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2017000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	9849000000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	8625000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	2407000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	2111000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	2296000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1124000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	901000000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1005000000	USD
CY2019	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	337000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	9844000000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	26000000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	3000000	USD
CY2019Q4	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	23000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	7000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	2000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	5000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	448000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	95000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	353000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-4000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-4000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-106000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-26000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-80000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax	4000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesTax	2000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax	2000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	3000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	1000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	2000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	4000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-52000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-18000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-34000000	USD
CY2018	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-116000000	USD
CY2018	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-36000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-80000000	USD
CY2019	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-16000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	353000000	USD
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	740500	shares
CY2019Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	1203000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1411000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1393000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1186000000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	74000000	USD
CY2018	us-gaap	Dividends Preferred Stock DividendsPreferredStock	70000000	USD
CY2017	us-gaap	Dividends Preferred Stock DividendsPreferredStock	76000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1337000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1323000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1110000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1038840000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1081542000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1084686000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.29
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.22
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1337000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1323000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1110000000	USD
CY2019	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2018	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2017	us-gaap	Dilutive Securities DilutiveSecurities	31000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1337000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1323000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1141000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1038840000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1081542000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	1084686000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	12994000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	16529000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	17883000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	4245000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	3160000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	0	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	4403000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	3511000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	30330000	shares
CY2019	hban	Incremental Common Shares Attributable To Other IncrementalCommonSharesAttributableToOther	0	shares
CY2018	hban	Incremental Common Shares Attributable To Other IncrementalCommonSharesAttributableToOther	0	shares
CY2017	hban	Incremental Common Shares Attributable To Other IncrementalCommonSharesAttributableToOther	127000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	17239000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	24443000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	51500000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1056079000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1105985000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	1136186000	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.27
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.20
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	939000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	881000000	USD
CY2019	us-gaap	Noninterest Income Other NoninterestIncomeOther	515000000	USD
CY2018	us-gaap	Noninterest Income Other NoninterestIncomeOther	440000000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	1454000000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	1321000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	939000000	USD
CY2019	us-gaap	Noninterest Income Other NoninterestIncomeOther	515000000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	1454000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	881000000	USD
CY2018	us-gaap	Noninterest Income Other NoninterestIncomeOther	440000000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	1321000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	83000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	78000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	14000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	32000000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	33000000	shares
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	92000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	15000000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0436
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0371
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0331
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.225
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0288
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0204
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	17000000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0241
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.240
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.295
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.91
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.58
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.81
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	10617000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.64
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	3211000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	13.77
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2440000	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	7.28
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	79000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	14.08
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	11309000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	12.23
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y8M12D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	32000000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	5955000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	13.77
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P8Y7M6D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	8000000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	5195000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	10.42
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y6M
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	24000000	USD
CY2019Q4	hban	Sharebased Compensation Arrangementby Sharebased Payment Award Options Expectedtobe Forfeited Outstanding Number SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExpectedtobeForfeitedOutstandingNumber	159000	shares
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	3000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	10000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	5000000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	13.91
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.98
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	11.13
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	69000000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	62000000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	53000000	USD
CY2019	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	931000000	USD
CY2019Q4	hban	Fairvalueofplanassets Percentage FairvalueofplanassetsPercentage	1
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	828000000	USD
CY2018Q4	hban	Fairvalueofplanassets Percentage FairvalueofplanassetsPercentage	1
CY2019Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	67000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	63000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-261000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-257000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-264000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	-10000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	-11000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	-14000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	251000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	246000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	250000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-17000000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-5000000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-12000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-12000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-3000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-9000000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	0	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-2000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-2000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-5000000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-2000000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-13000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-10000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-4000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-1000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-16000000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-6000000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-10000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-18000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-7000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-11000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-2000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-1000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	51000000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	46000000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	35000000	USD
CY2019Q4	hban	Defined Contribution Plan Numberof Sharesof Equity Securities Issuedby Employerand Related Parties Includedin Plan Assets DefinedContributionPlanNumberofSharesofEquitySecuritiesIssuedbyEmployerandRelatedPartiesIncludedinPlanAssets	10334	shares
CY2018Q4	hban	Defined Contribution Plan Numberof Sharesof Equity Securities Issuedby Employerand Related Parties Includedin Plan Assets DefinedContributionPlanNumberofSharesofEquitySecuritiesIssuedbyEmployerandRelatedPartiesIncludedinPlanAssets	11635	shares
CY2019Q4	hban	Defined Contribution Plan Amountof Employerand Related Party Securities Includedin Plan Assets DefinedContributionPlanAmountofEmployerandRelatedPartySecuritiesIncludedinPlanAssets	156000000	USD
CY2018Q4	hban	Defined Contribution Plan Amountof Employerand Related Party Securities Includedin Plan Assets DefinedContributionPlanAmountofEmployerandRelatedPartySecuritiesIncludedinPlanAssets	139000000	USD
CY2019Q4	hban	Defined Contribution Plan Dividends Receivedon Employerand Related Party Securities Includedin Plan Assets DefinedContributionPlanDividendsReceivedonEmployerandRelatedPartySecuritiesIncludedinPlanAssets	6000000	USD
CY2018Q4	hban	Defined Contribution Plan Dividends Receivedon Employerand Related Party Securities Includedin Plan Assets DefinedContributionPlanDividendsReceivedonEmployerandRelatedPartySecuritiesIncludedinPlanAssets	6000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	209000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	152000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	41000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	16000000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	20000000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-1000000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	225000000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	172000000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	40000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	24000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	71000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	151000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8000000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	17000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	23000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	63000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	168000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	248000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	235000000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	40000000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	15000000	USD
CY2019Q4	us-gaap	Bad Debt Reserve For Tax Purposes Of Qualified Lender BadDebtReserveForTaxPurposesOfQualifiedLender	12000000	USD
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CY2019Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	81000000	USD
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CY2018Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	2000000	USD
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CY2019	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	66000000	USD
CY2019	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2019	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases	0	USD
CY2019	hban	Fair Value Net Derivative Asset Liability Measuredon Recurring Basis Unobservable Inputs Reconciliation Repayments FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationRepayments	0	USD
CY2019	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	0	USD
CY2019Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	6000000	USD
CY2019	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Change In Unrealized Gain Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	3000000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	74000000	USD
CY2017Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-1000000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3	35000000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	35000000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases	0	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Sales FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSales	0	USD
CY2018	hban	Fair Value Net Derivative Asset Liability Measuredon Recurring Basis Unobservable Inputs Reconciliation Repayments FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationRepayments	0	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	-3000000	USD
CY2018Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	2000000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Change In Unrealized Gain Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	0	USD
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-52000000	USD
CY2016Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-2000000	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3	15000000	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	16000000	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Other Comprehensive Income Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInOtherComprehensiveIncomeLoss	0	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases	0	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Sales FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSales	0	USD
CY2017	hban	Fair Value Net Derivative Asset Liability Measuredon Recurring Basis Unobservable Inputs Reconciliation Repayments FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationRepayments	0	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	0	USD
CY2017Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-1000000	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Change In Unrealized Gain Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	0	USD
CY2019Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	174000000	USD
CY2019	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	66000000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	35000000	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	16000000	USD
CY2019Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	781000000	USD
CY2018Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	613000000	USD
CY2019Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	25927000000	USD
CY2018Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	4877000000	USD
CY2019Q4	hban	Notional Amount Of Interest Rate Derivatives1 NotionalAmountOfInterestRateDerivatives1	16177000000	USD
CY2018Q4	hban	Notional Amount Of Interest Rate Derivatives1 NotionalAmountOfInterestRateDerivatives1	4877000000	USD
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CY2018Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	2000000	USD
CY2018Q4	hban	Weighted Average Rate Receive WeightedAverageRateReceive	0.0224
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CY2017	hban	Increase Decrease To Net Interest Income Due To Derivative Adjustment IncreaseDecreaseToNetInterestIncomeDueToDerivativeAdjustment	23000000	USD
CY2019Q4	us-gaap	Fair Value Hedge Liabilities At Fair Value FairValueHedgeLiabilitiesAtFairValue	7578000000	USD
CY2018Q4	us-gaap	Fair Value Hedge Liabilities At Fair Value FairValueHedgeLiabilitiesAtFairValue	4845000000	USD
CY2019Q4	us-gaap	Hedged Liability Fair Value Hedge Cumulative Increase Decrease HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease	114000000	USD
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CY2019	hban	Fairvaluehedgingadjustments Fairvaluehedgingadjustments	93000000	USD
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CY2019Q4	hban	Credit Risks From Interest Rate Swaps Used For Trading Purposes CreditRisksFromInterestRateSwapsUsedForTradingPurposes	407000000	USD
CY2018Q4	hban	Credit Risks From Interest Rate Swaps Used For Trading Purposes CreditRisksFromInterestRateSwapsUsedForTradingPurposes	132000000	USD
CY2019Q4	hban	Aggregate Credit Risk Net Of Collateral AggregateCreditRiskNetOfCollateral	22000000	USD
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CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	171000000	USD
CY2019Q4	hban	Investment Securities And Cash Collateral Pledged To Company InvestmentSecuritiesAndCashCollateralPledgedToCompany	178000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	856000000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	404000000	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	452000000	USD
CY2019Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	65000000	USD
CY2019Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	29000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	358000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	500000000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability And Obligation To Return Cash Offset DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset	291000000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	209000000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	4000000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	53000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	152000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	521000000	USD
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CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	0	USD
CY2019Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	75000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	29000000	USD
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CY2018Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	12000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	175000000	USD
CY2019Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets VariableInterestEntityNonconsolidatedCarryingAmountAssets	920000000	USD
CY2019Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Liabilities VariableInterestEntityNonconsolidatedCarryingAmountLiabilities	647000000	USD
CY2019Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	906000000	USD
CY2018Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets VariableInterestEntityNonconsolidatedCarryingAmountAssets	848000000	USD
CY2018Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Liabilities VariableInterestEntityNonconsolidatedCarryingAmountLiabilities	662000000	USD
CY2018Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	834000000	USD
CY2019	hban	Maximumyeartodeferpaymentofintereston Debenture MaximumyeartodeferpaymentofinterestonDebenture	P5Y
CY2019Q3	us-gaap	Loss Contingency Period Of Occurrence LossContingencyPeriodOfOccurrence	P2Y
CY2019Q3	us-gaap	Debt Instrument Maturity Date Description DebtInstrumentMaturityDateDescription	P90D
CY2019Q4	hban	Common Equity Tier One Risk Based Capital Requiredfor Capital Adequacyto Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.0450
CY2019Q4	hban	Common Equity Tier One Risk Based Capital Conservation Buffer Plus Capital Requiredfor Capital Adequacyto Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalConservationBufferPlusCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.0700
CY2019Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	8647000000	USD
CY2018Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	8271000000	USD
CY2019Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2019Q4	hban	Tier One Risk Based Capital Conservation Buffer Plus Capital Requiredfor Capital Adequacyto Risk Weighted Assets TierOneRiskBasedCapitalConservationBufferPlusCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.0850
CY2019Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0600
CY2019Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	9854000000	USD
CY2018Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	9478000000	USD
CY2019Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2019Q4	hban	Capital Conservation Buffer Plus Capitalrequiredfor Capital Adequacyto Risk Weighted Assets CapitalConservationBufferPlusCapitalrequiredforCapitalAdequacytoRiskWeightedAssets	0.1050
CY2019Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2019Q4	us-gaap	Capital Capital	11413000000	USD
CY2018Q4	us-gaap	Capital Capital	11122000000	USD
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2019Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	9854000000	USD
CY2018Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	9478000000	USD
CY2019Q4	hban	Average Cash Reserve Deposit Required And Made Federal Reserve Banks AverageCashReserveDepositRequiredAndMadeFederalReserveBanks	600000000	USD
CY2018Q4	hban	Average Cash Reserve Deposit Required And Made Federal Reserve Banks AverageCashReserveDepositRequiredAndMadeFederalReserveBanks	400000000	USD
CY2019Q4	hban	Amount Bank Could Lend To Single Affiliate AmountBankCouldLendToSingleAffiliate	1200000000	USD
CY2019	us-gaap	Cash Dividends Paid To Parent Company CashDividendsPaidToParentCompany	700000000	USD
CY2019Q4	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4
CY2019Q4	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3213000000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	287000000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	1454000000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	2721000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	248000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1411000000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3189000000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	235000000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	1321000000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	2647000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	235000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	1393000000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	3002000000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	201000000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	1307000000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	2714000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	208000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	1186000000	USD
CY2019Q4	us-gaap	Assets Assets	109002000000	USD
CY2018Q4	us-gaap	Assets Assets	108781000000	USD
CY2019Q4	us-gaap	Deposits Deposits	82347000000	USD
CY2018Q4	us-gaap	Deposits Deposits	84774000000	USD
CY2019Q1	us-gaap	Interest Expense InterestExpense	248000000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	780000000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	799000000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	812000000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	822000000	USD
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1011000000	USD
CY2019Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1052000000	USD
CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1068000000	USD
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1070000000	USD
CY2019Q4	us-gaap	Interest Expense InterestExpense	231000000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	253000000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	256000000	USD
CY2019Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	79000000	USD
CY2019Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	82000000	USD
CY2019Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	59000000	USD
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	67000000	USD
CY2019Q4	us-gaap	Noninterest Income NoninterestIncome	372000000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	389000000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	374000000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	319000000	USD
CY2019Q4	us-gaap	Noninterest Expense NoninterestExpense	701000000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	667000000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	700000000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	653000000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	372000000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	439000000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	427000000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	421000000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	55000000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67000000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	63000000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	63000000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	317000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	372000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	364000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	358000000	USD
CY2019Q4	us-gaap	Dividends Preferred Stock DividendsPreferredStock	19000000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	18000000	USD
CY2019Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	18000000	USD
CY2019Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	19000000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	298000000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	354000000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	346000000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	339000000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
CY2018Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1056000000	USD
CY2018Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1007000000	USD
CY2018Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	972000000	USD
CY2018Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	914000000	USD
CY2018Q4	us-gaap	Interest Expense InterestExpense	223000000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	205000000	USD
CY2018Q2	us-gaap	Interest Expense InterestExpense	188000000	USD
CY2018Q1	us-gaap	Interest Expense InterestExpense	144000000	USD
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	833000000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	802000000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	784000000	USD
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	770000000	USD
CY2018Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	60000000	USD
CY2018Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	53000000	USD
CY2018Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	56000000	USD
CY2018Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	66000000	USD
CY2018Q4	us-gaap	Noninterest Income NoninterestIncome	329000000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	342000000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	336000000	USD
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	314000000	USD
CY2018Q4	us-gaap	Noninterest Expense NoninterestExpense	711000000	USD
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	651000000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	652000000	USD
CY2018Q1	us-gaap	Noninterest Expense NoninterestExpense	633000000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	391000000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	440000000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	412000000	USD
CY2018Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	18000000	USD
CY2018Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	21000000	USD
CY2018Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	12000000	USD
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	315000000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	360000000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	334000000	USD
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	314000000	USD
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	385000000	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	57000000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	62000000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	57000000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	59000000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	334000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	378000000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	355000000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	326000000	USD
CY2018Q4	us-gaap	Dividends Preferred Stock DividendsPreferredStock	19000000	USD
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28

Files In Submission

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$HBAN
HUNTINGTON BANCSHARES INC /MD/ Stock $hban

2019 Q4 Form 10-K Financial Statement

#000004919620000010 Filed on February 14, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HBAN HUNTINGTON BANCSHARES INC /MD/ Stock $hban

2019 Q4 Form 10-K Financial Statement

#000004919620000010 Filed on February 14, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HBAN
HUNTINGTON BANCSHARES INC /MD/ Stock $hban