$HBAN
HUNTINGTON BANCSHARES INC /MD/ Stock $hban

$hban Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000119312512067565 Filed on February 17, 2012

Income Statement

Concept	2011 Q4	2011	2010 Q4
Revenue	$485.2M	$1.970B	$528.3M
YoY Change	-8.15%	-8.16%
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	$69.00M	$282.1M	$77.10M
YoY Change	-10.51%	-1.43%	14.22%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$70.19M	$341.1M	$113.0M
YoY Change	-37.88%	-35.23%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$168.8M	$707.2M	$157.9M
YoY Change	6.88%	100.74%	-126.41%
Income Tax	$41.95M	$164.6M	$35.05M
% Of Pretax Income	24.85%	23.28%	22.19%
Net Earnings	$126.9M	$542.6M	$122.9M
YoY Change	3.22%	73.72%	-133.24%
Net Earnings / Revenue	26.14%	27.54%	23.26%
Basic Earnings Per Share	$0.14	$0.59	$0.05
Diluted Earnings Per Share	$0.14	$0.59	$0.05
COMMON SHARES
Basic Shares Outstanding	864.4M shares	863.7M shares	863.3B shares
Diluted Shares Outstanding		867.6M shares

Balance Sheet

Concept	2011 Q4	2011	2010 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.263B		$1.116B
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	$564.4M	$564.0M	$491.6M
YoY Change	14.81%	14.63%	-0.89%
Goodwill	$444.3M		$444.3M
YoY Change	0.0%		0.0%
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	$54.45B	$54.45B	$53.82B
YoY Change	1.17%	1.17%	4.39%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$1.214B	$1.214B	$1.131B
YoY Change	7.34%	7.34%	8.13%
Deferred Revenue
YoY Change
Short-Term Debt	$1.441B	$1.441B	$2.041B
YoY Change	-29.38%	-29.4%	132.9%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.214B	$1.214B	$1.131B
YoY Change	7.34%	7.34%	8.13%
LONG-TERM LIABILITIES
Long-Term Debt	$2.735B	$2.735B	$3.641B
YoY Change	-24.88%	-24.88%	0.19%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$2.735B	$2.735B	$3.641B
YoY Change	-24.88%	-24.88%	0.19%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.214B	$1.214B	$1.131B
Total Long-Term Liabilities	$2.735B	$2.735B	$3.641B
Total Liabilities	$49.03B	$49.03B	$48.84B
YoY Change	0.4%	0.4%	5.67%
SHAREHOLDERS EQUITY
Retained Earnings	-$2.390B		-$2.814B
YoY Change	-15.09%		-3.68%
Common Stock	$8.656M		$8.642M
YoY Change	0.16%		20.58%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$10.26M		$8.771M
YoY Change	16.92%		-23.5%
Treasury Stock Shares	1.178M shares		875.9K shares
Shareholders Equity	$5.779B	$5.418B	$5.416B
YoY Change
Total Liabilities & Shareholders Equity	$54.45B	$54.45B	$53.82B
YoY Change	1.17%	1.17%	4.39%

Cashflow Statement

Concept	2011 Q4	2011	2010 Q4
OPERATING ACTIVITIES
Net Income	$126.9M	$542.6M	$122.9M
YoY Change	3.22%	73.72%	-133.24%
Depreciation, Depletion And Amortization	$69.00M	$282.1M	$77.10M
YoY Change	-10.51%	-1.43%	14.22%
Cash From Operating Activities	$208.1M	$1.595B	-$25.30M
YoY Change	-922.53%	89.67%	-119.8%
INVESTING ACTIVITIES
Capital Expenditures	-$41.40M	$143.8M	-$22.20M
YoY Change	86.49%	110.8%	34.55%
Acquisitions
YoY Change
Other Investing Activities	-$645.4M	-$327.0K	-$920.0M
YoY Change	-29.85%	-91.33%	1588.07%
Cash From Investing Activities	-$686.7M	-$1.305B	-$942.3M
YoY Change	-27.13%	-53.01%	1225.32%
FINANCING ACTIVITIES
Cash Dividend Paid		$92.40M
YoY Change		-32.3%
Common Stock Issuance & Retirement, Net		$0.00
YoY Change		-100.0%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-595.6M	-$22.00M	676.2M
YoY Change	-188.08%	-101.74%	-262.04%
NET CHANGE
Cash From Operating Activities	208.1M	$1.595B	-25.30M
Cash From Investing Activities	-686.7M	-$1.305B	-942.3M
Cash From Financing Activities	-595.6M	-$22.00M	676.2M
Net Change In Cash	-1.074B	$268.1M	-291.4M
YoY Change	268.63%	-139.81%	-19.19%
FREE CASH FLOW
Cash From Operating Activities	$208.1M	$1.595B	-$25.30M
Capital Expenditures	-$41.40M	$143.8M	-$22.20M
Free Cash Flow	$249.5M	$1.451B	-$3.100M
YoY Change	-8148.39%	87.8%	-102.15%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2011	dei	Entity Registrant Name EntityRegistrantName	HUNTINGTON BANCSHARES INC/MD
CY2011	dei	Document Period End Date DocumentPeriodEndDate	2011-12-31
CY2011	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
CY2011	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2011	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2011	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2011	dei	Amendment Flag AmendmentFlag	false
CY2011	dei	Document Type DocumentType	10-K
CY2011	dei	Entity Central Index Key EntityCentralIndexKey	0000049196
CY2011Q2	dei	Entity Public Float EntityPublicFloat	5533232959	USD
CY2011	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2011	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2011	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2011Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	90943000	USD
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CY2011Q4	us-gaap	Loans And Leases Receivable Consumer Home Equity LoansAndLeasesReceivableConsumerHomeEquity	8215413000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Consumer Mortgage LoansAndLeasesReceivableConsumerMortgage	5228276000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Consumer Other LoansAndLeasesReceivableConsumerOther	497568000	USD
CY2011Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	1549783000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	564429000	USD
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CY2010	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	13448000	USD
CY2011	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	3682000	USD
CY2011	hban	Impairment Losses On Investment Securities ImpairmentLossesOnInvestmentSecurities	-4174000	USD
CY2010	hban	Impairment Losses On Investment Securities ImpairmentLossesOnInvestmentSecurities	-9847000	USD
CY2009	hban	Impairment Losses On Investment Securities ImpairmentLossesOnInvestmentSecurities	183472000	USD
CY2009	hban	Noncredit Related Losses On Securities Not Expected To Be Sold NoncreditRelatedLossesOnSecuritiesNotExpectedToBeSold	124408000	USD
CY2010	hban	Noncredit Related Losses On Securities Not Expected To Be Sold NoncreditRelatedLossesOnSecuritiesNotExpectedToBeSold	-23569000	USD
CY2011	hban	Noncredit Related Losses On Securities Not Expected To Be Sold NoncreditRelatedLossesOnSecuritiesNotExpectedToBeSold	-11537000	USD
CY2011	us-gaap	Impairment Of Investments ImpairmentOfInvestments	7363000	USD
CY2010	us-gaap	Impairment Of Investments ImpairmentOfInvestments	13722000	USD
CY2009	us-gaap	Impairment Of Investments ImpairmentOfInvestments	59064000	USD
CY2009	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	148880000	USD
CY2010	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	94087000	USD
CY2011	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	118882000	USD
CY2011	us-gaap	Noninterest Income NoninterestIncome	980623000	USD
CY2010	us-gaap	Noninterest Income NoninterestIncome	1041858000	USD
CY2009	us-gaap	Noninterest Income NoninterestIncome	1005644000	USD
CY2009	us-gaap	Labor And Related Expense LaborAndRelatedExpense	700482000	USD
CY2010	us-gaap	Labor And Related Expense LaborAndRelatedExpense	798973000	USD
CY2011	us-gaap	Labor And Related Expense LaborAndRelatedExpense	892534000	USD
CY2011	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	187195000	USD
CY2010	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	159248000	USD
CY2009	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	148095000	USD
CY2009	us-gaap	Occupancy Net OccupancyNet	105273000	USD
CY2010	us-gaap	Occupancy Net OccupancyNet	107862000	USD
CY2011	us-gaap	Occupancy Net OccupancyNet	109129000	USD
CY2011	us-gaap	Equipment Expense EquipmentExpense	92544000	USD
CY2010	us-gaap	Equipment Expense EquipmentExpense	85920000	USD
CY2009	us-gaap	Equipment Expense EquipmentExpense	83117000	USD
CY2009	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	113830000	USD
CY2010	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	97548000	USD
CY2011	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	77692000	USD
CY2011	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	75627000	USD
CY2010	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	65924000	USD
CY2009	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	33049000	USD
CY2009	us-gaap	Professional Fees ProfessionalFees	76366000	USD
CY2010	us-gaap	Professional Fees ProfessionalFees	88778000	USD
CY2011	us-gaap	Professional Fees ProfessionalFees	70595000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	53318000	USD
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	60478000	USD
CY2009	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	68307000	USD
CY2009	hban	Automobile Operating Lease Expense AutomobileOperatingLeaseExpense	43360000	USD
CY2010	hban	Automobile Operating Lease Expense AutomobileOperatingLeaseExpense	37034000	USD
CY2011	hban	Automobile Operating Lease Expense AutomobileOperatingLeaseExpense	20018000	USD
CY2011	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-18006000	USD
CY2010	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-39049000	USD
CY2009	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-93899000	USD
CY2009	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	2606944000	USD
CY2010	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2011	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2011	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	9697000	USD
CY2010	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2009	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	147442000	USD
CY2009	us-gaap	Other Noninterest Expense OtherNoninterestExpense	108163000	USD
CY2010	us-gaap	Other Noninterest Expense OtherNoninterestExpense	132991000	USD
CY2011	us-gaap	Other Noninterest Expense OtherNoninterestExpense	141539000	USD
CY2011	us-gaap	Noninterest Expense NoninterestExpense	1728500000	USD
CY2010	us-gaap	Noninterest Expense NoninterestExpense	1673805000	USD
CY2009	us-gaap	Noninterest Expense NoninterestExpense	4033443000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-3678183000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	352311000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	707234000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	164621000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	39964000	USD
CY2009	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-584004000	USD
CY2009	us-gaap	Net Income Loss NetIncomeLoss	-3094179000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	312347000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	542613000	USD
CY2011	us-gaap	Dividends Preferred Stock DividendsPreferredStock	30813000	USD
CY2010	us-gaap	Dividends Preferred Stock DividendsPreferredStock	172032000	USD
CY2009	us-gaap	Dividends Preferred Stock DividendsPreferredStock	174756000	USD
CY2009	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-3268935000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	140315000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	511800000	USD
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	863691000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	726934000	shares
CY2009	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	532802000	shares
CY2009	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	532802000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	729532000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	867624000	shares
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2009	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-6.14
CY2009	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-6.14
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.10
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.04
CY2009	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.04
CY2011	hban	Non Credit Related Impairment Losses On Debt Securities Not Expected To Be Sold Net Of Tax NonCreditRelatedImpairmentLossesOnDebtSecuritiesNotExpectedToBeSoldNetOfTax	-7499000	USD
CY2011	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	64921000	USD
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	5188000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-53875000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	22026000	USD
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	86448000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1934000	USD
CY2011	us-gaap	Stockholders Equity Other StockholdersEquityOther	2185000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	566346000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	-49100000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	19666000	USD
CY2011	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	85.00
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	5336002000	USD
CY2010Q4	hban	Cumulative Adjustment For Accounting Change Consolidation Of Variable Interest Entity CumulativeAdjustmentForAccountingChangeConsolidationOfVariableInterestEntity	-6070000	USD
CY2010	hban	Non Credit Related Impairment Losses On Debt Securities Not Expected To Be Sold Net Of Tax NonCreditRelatedImpairmentLossesOnDebtSecuritiesNotExpectedToBeSoldNetOfTax	-15320000	USD
CY2010	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	-9406000	USD
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	-23155000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-19021000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	276085000	USD
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	886172000	USD
CY2010	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	-1398071000	USD
CY2010	us-gaap	Increase In Carrying Amount Of Redeemable Preferred Stock IncreaseInCarryingAmountOfRedeemablePreferredStock	0	USD
CY2010	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	30139000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	15453000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-47000	USD
CY2010	us-gaap	Stockholders Equity Other Shares StockholdersEquityOtherShares	104000	shares
CY2010	us-gaap	Stockholders Equity Other StockholdersEquityOther	-126000	USD
CY2008Q4	us-gaap	Stockholders Equity StockholdersEquity	7228906000	USD
CY2009	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	14227000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	51107000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-2920930000	USD
CY2009	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1145751000	USD
CY2009	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	0	USD
CY2009	us-gaap	Increase In Carrying Amount Of Redeemable Preferred Stock IncreaseInCarryingAmountOfRedeemablePreferredStock	0	USD
CY2009	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	22020000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8547000	USD
CY2009	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-198000	USD
CY2009	us-gaap	Stockholders Equity Other StockholdersEquityOther	1374000	USD
CY2009Q4	us-gaap	Shares Outstanding SharesOutstanding	-980000	shares
CY2009	hban	Non Credit Related Impairment Losses On Debt Securities Not Expected To Be Sold Net Of Tax NonCreditRelatedImpairmentLossesOnDebtSecuritiesNotExpectedToBeSoldNetOfTax	80865000	USD
CY2009	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	188780000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	282105000	USD
CY2011	hban	Change In Current And Deferred Income Taxes ChangeInCurrentAndDeferredIncomeTaxes	-84555000	USD
CY2011	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-139505000	USD
CY2011	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	2414172000	USD
CY2011	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	2820797000	USD
CY2011	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-3681000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	28659000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1594787000	USD
CY2011	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	50093000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2489049000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	31163000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	3205884000	USD
CY2011	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	4283866000	USD
CY2011	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	204082000	USD
CY2011	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	1640237000	USD
CY2011	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	4148424000	USD
CY2011	hban	Proceeds From Sale Of Operating Lease Assets ProceedsFromSaleOfOperatingLeaseAssets	62744000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	143763000	USD
CY2011	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	55817000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	59558000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1304706000	USD
CY2011	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1420944000	USD
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-580335000	USD
CY2011	us-gaap	Maturities Of Subordinated Debt MaturitiesOfSubordinatedDebt	5000000	USD
CY2011	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	550000000	USD
CY2011	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	359732000	USD
CY2011	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	902652000	USD
CY2011	hban	Repurchase Of Warrant Convertible To Common Stock RepurchaseOfWarrantConvertibleToCommonStock	49100000	USD
CY2011	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	30813000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	61591000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1963000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-22001000	USD
CY2010	hban	Change In Current And Deferred Income Taxes ChangeInCurrentAndDeferredIncomeTaxes	-161367000	USD
CY2010	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	101747000	USD
CY2010	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	3864273000	USD
CY2010	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	3535550000	USD
CY2010	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-274000	USD
CY2010	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	123428000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	840823000	USD
CY2010	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	162913000	USD
CY2010	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3288714000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	268080000	USD
CY2011	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2011	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	80065000	USD
CY2011	us-gaap	Interest Paid InterestPaid	357212000	USD
CY2011Q4	us-gaap	Dividends Payable Amount DividendsPayableAmount	40771000	USD
CY2011Q4	hban	Trust Preferred Securities Exchange TrustPreferredSecuritiesExchange	35500000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	286186000	USD
CY2010	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2010	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	4280518000	USD
CY2010	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0	USD
CY2010	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	8769767000	USD
CY2010	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	USD
CY2010	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	941615000	USD
CY2010	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	2764575000	USD
CY2010	hban	Proceeds From Sale Of Operating Lease Assets ProceedsFromSaleOfOperatingLeaseAssets	34930000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	68200000	USD
CY2010	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	113298000	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-3770000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2776784000	USD
CY2010	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1353227000	USD
CY2010	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	1128887000	USD
CY2010	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	297375000	USD
CY2010	us-gaap	Maturities Of Subordinated Debt MaturitiesOfSubordinatedDebt	83870000	USD
CY2010	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	450000000	USD
CY2010	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	446718000	USD
CY2010	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	60805000	USD
CY2010	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	848756000	USD
CY2010	hban	Repurchase Of Warrant Convertible To Common Stock RepurchaseOfWarrantConvertibleToCommonStock	0	USD
CY2010	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	107901000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	28598000	USD
CY2010	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	1398071000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	886172000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-47000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1262505000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-673456000	USD
CY2010	us-gaap	Interest Paid InterestPaid	552955000	USD
CY2010Q4	us-gaap	Dividends Payable Amount DividendsPayableAmount	23373000	USD
CY2010Q4	hban	Trust Preferred Securities Exchange TrustPreferredSecuritiesExchange	0	USD
CY2009Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	1521344000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-121401000	USD
CY2009	us-gaap	Depreciation And Amortization DepreciationAndAmortization	228041000	USD
CY2009	hban	Change In Current And Deferred Income Taxes ChangeInCurrentAndDeferredIncomeTaxes	471592000	USD
CY2009	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-856112000	USD
CY2009	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	4786043000	USD
CY2009	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	4667792000	USD
CY2009	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-10249000	USD
CY2009	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-21709000	USD
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1966262000	USD
CY2009	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	-319989000	USD
CY2009	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1004293000	USD
CY2009	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2009	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	3585644000	USD
CY2009	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	0	USD
CY2009	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	8386223000	USD
CY2009	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	USD
CY2009	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	949398000	USD
CY2009	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-1544524000	USD
CY2009	hban	Proceeds From Sale Of Operating Lease Assets ProceedsFromSaleOfOperatingLeaseAssets	11216000	USD
CY2009	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	49223000	USD
CY2009	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	60499000	USD
CY2009	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4500000	USD
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1595361000	USD
CY2009	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	2559633000	USD
CY2009	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-277215000	USD
CY2009	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2009	us-gaap	Maturities Of Subordinated Debt MaturitiesOfSubordinatedDebt	484966000	USD
CY2009	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	207394000	USD
CY2009	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	2627786000	USD
CY2009	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	598200000	USD
CY2009	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	642644000	USD
CY2009	hban	Repurchase Of Warrant Convertible To Common Stock RepurchaseOfWarrantConvertibleToCommonStock	0	USD
CY2009	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	107262000	USD
CY2009	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	55026000	USD
CY2009	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2009	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1135645000	USD
CY2009	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-198000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	305775000	USD
CY2009	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	676676000	USD
CY2008Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	844668000	USD
CY2009	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-112412000	USD
CY2009	us-gaap	Interest Paid InterestPaid	869503000	USD
CY2009Q4	us-gaap	Dividends Payable Amount DividendsPayableAmount	23305000	USD
CY2009Q4	hban	Trust Preferred Securities Exchange TrustPreferredSecuritiesExchange	0	USD
CY2011	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	1759000	USD
CY2010	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	0	USD
CY2009	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	0	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	122500000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	158200000	USD
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Receivable CapitalLeasesFutureMinimumPaymentsReceivable	1000000000	USD
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Receivable Current CapitalLeasesFutureMinimumPaymentsReceivableCurrent	400000000	USD
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Two Years CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears	200000000	USD
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Three Years CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears	200000000	USD
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Receivable In Four Years CapitalLeasesFutureMinimumPaymentsReceivableInFourYears	100000000	USD
CY2011Q4	us-gaap	Capital Leases Future Minimum Payments Receivable Due Thereafter CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter	100000000	USD
CY2011	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	59578000	USD
CY2010	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	0	USD
CY2010	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	1125309000	USD
CY2011	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	2819569000	USD
CY2011	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	38400000	USD
CY2010	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	59700000	USD
CY2009	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	92700000	USD
CY2011	hban	Loans And Leases Receivable Interest Income Recorded On Nonaccrual Loans LoansAndLeasesReceivableInterestIncomeRecordedOnNonaccrualLoans	5100000	USD
CY2010	hban	Loans And Leases Receivable Interest Income Recorded On Nonaccrual Loans LoansAndLeasesReceivableInterestIncomeRecordedOnNonaccrualLoans	5500000	USD
CY2009	hban	Loans And Leases Receivable Interest Income Recorded On Nonaccrual Loans LoansAndLeasesReceivableInterestIncomeRecordedOnNonaccrualLoans	7200000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	541080000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	777948000	USD
CY2011Q4	hban	Loans And Leases Receivable Automobile LoansAndLeasesReceivableAutomobile	4457446000	USD
CY2010Q4	hban	Loans And Leases Receivable Automobile LoansAndLeasesReceivableAutomobile	5614711000	USD
CY2010Q4	hban	Amount Guaranteed By Government AmountGuaranteedByGovernment	98288000	USD
CY2011Q4	hban	Amount Guaranteed By Government AmountGuaranteedByGovernment	96703000	USD
CY2008Q4	hban	Alll Balance Beginning Of Period AlllBalanceBeginningOfPeriod	900227000	USD
CY2009	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1561378000	USD
CY2009	hban	Recoveries Of Loans Previously Chargedoff RecoveriesOfLoansPreviouslyChargedoff	84791000	USD
CY2009	hban	Provision For Loan And Lease Losse ProvisionForLoanAndLeaseLosse	2069931000	USD
CY2009	hban	Allowance For Loans Sold Or Transferred To Loans Held For Sale AllowanceForLoansSoldOrTransferredToLoansHeldForSale	11092000	USD
CY2009Q4	hban	Alll Balance End Of Period AlllBalanceEndOfPeriod	1482479000	USD
CY2008Q4	hban	Ulc Balance Beginning Of Period ULCBalanceBeginningOfPeriod	44139000	USD
CY2009	hban	Provision For Unfunded Loan Commitments And Letters Of Credit ProvisionForUnfundedLoanCommitmentsAndLettersOfCredit	4740000	USD
CY2009Q4	hban	Aulc Balance End Of Period AulcBalanceEndOfPeriod	48879000	USD
CY2009Q4	hban	Acl Balance End Of Period AclBalanceEndOfPeriod	1531358000	USD
CY2009Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	1094599000	USD
CY2009	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	1010044000	USD
CY2009Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	175442000	USD
CY2010Q4	hban	Alll Balance Beginning Of Period AlllBalanceBeginningOfPeriod	1249008000	USD
CY2011	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	557753000	USD
CY2011	hban	Recoveries Of Loans Previously Chargedoff RecoveriesOfLoansPreviouslyChargedoff	120664000	USD
CY2011	hban	Provision For Loan And Lease Losse ProvisionForLoanAndLeaseLosse	167730000	USD
CY2011	hban	Allowance For Loans Sold Or Transferred To Loans Held For Sale AllowanceForLoansSoldOrTransferredToLoansHeldForSale	14821000	USD
CY2011Q4	hban	Alll Balance End Of Period AlllBalanceEndOfPeriod	964828000	USD
CY2011	hban	Provision For Unfunded Loan Commitments And Letters Of Credit ProvisionForUnfundedLoanCommitmentsAndLettersOfCredit	6329000	USD
CY2011Q4	hban	Aulc Balance End Of Period AulcBalanceEndOfPeriod	48456000	USD
CY2011Q4	hban	Acl Balance End Of Period AclBalanceEndOfPeriod	1013284000	USD
CY2010Q4	hban	Ulc Balance Beginning Of Period ULCBalanceBeginningOfPeriod	42127000	USD
CY2009Q4	hban	Alll Balance Beginning Of Period AlllBalanceBeginningOfPeriod	1482479000	USD
CY2009Q4	hban	Ulc Balance Beginning Of Period ULCBalanceBeginningOfPeriod	48879000	USD
CY2010	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1003907000	USD
CY2010	hban	Recoveries Of Loans Previously Chargedoff RecoveriesOfLoansPreviouslyChargedoff	129433000	USD
CY2010	hban	Provision For Loan And Lease Losse ProvisionForLoanAndLeaseLosse	641299000	USD
CY2010	hban	Allowance For Loans Sold Or Transferred To Loans Held For Sale AllowanceForLoansSoldOrTransferredToLoansHeldForSale	296000	USD
CY2010Q4	hban	Alll Balance End Of Period AlllBalanceEndOfPeriod	1249008000	USD
CY2010	hban	Provision For Unfunded Loan Commitments And Letters Of Credit ProvisionForUnfundedLoanCommitmentsAndLettersOfCredit	-6752000	USD
CY2010Q4	hban	Aulc Balance End Of Period AulcBalanceEndOfPeriod	42127000	USD
CY2010Q4	hban	Acl Balance End Of Period AclBalanceEndOfPeriod	1291135000	USD
CY2011Q4	hban	Automobile Loans Including Hfs Securitization AutomobileLoansIncludingHFSSecuritization	5707446000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	105552000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	859276000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Acquired With Deteriorated Credit Quality FinancingReceivableAllowanceForCreditLossesAcquiredWithDeterioratedCreditQuality	0	USD
CY2011Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	972281000	USD
CY2011Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	37951502000	USD
CY2011Q4	us-gaap	Financing Receivable Acquired With Deteriorated Credit Quality FinancingReceivableAcquiredWithDeterioratedCreditQuality	0	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	143860000	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	1105148000	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses Acquired With Deteriorated Credit Quality FinancingReceivableAllowanceForCreditLossesAcquiredWithDeterioratedCreditQuality	0	USD
CY2010Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	919581000	USD
CY2010Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	37186926000	USD
CY2010Q4	us-gaap	Financing Receivable Acquired With Deteriorated Credit Quality FinancingReceivableAcquiredWithDeterioratedCreditQuality	0	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Collateral For Secured Borrowings LoansAndLeasesReceivableCollateralForSecuredBorrowings	18800000000	USD
CY2011Q4	us-gaap	Business Acquisition Percentage Of Voting Interests Acquired BusinessAcquisitionPercentageOfVotingInterestsAcquired	1	pure
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	103747000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	2608656000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	870324000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	4201047000	USD
CY2011Q4	hban	Available For Sale Securities Non Marketable Equity Securities Amortized Cost AvailableForSaleSecuritiesNonMarketableEquitySecuritiesAmortizedCost	286515000	USD
CY2011Q4	hban	Available For Sale Securities Marketable Equity Securities Amortized Cost AvailableForSaleSecuritiesMarketableEquitySecuritiesAmortizedCost	53665000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	104074000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2614845000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	887725000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	4131236000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	3540183000	USD
CY2010Q4	hban	Available For Sale Securities Non Marketable Equity Securities Amortized Cost AvailableForSaleSecuritiesNonMarketableEquitySecuritiesAmortizedCost	308722000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	4685902000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	335192000	USD
CY2010Q4	hban	Available For Sale Securities Marketable Equity Securities Amortized Cost AvailableForSaleSecuritiesMarketableEquitySecuritiesAmortizedCost	53944000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	1128657000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	3510490000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	337715000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	4545304000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	1139727000	USD
CY2011Q4	hban	Available For Sale Securities Marketable Equity Securities Fair Value AvailableForSaleSecuritiesMarketableEquitySecuritiesFairValue	53619000	USD
CY2010Q4	hban	Available For Sale Securities Marketable Equity Securities Fair Value AvailableForSaleSecuritiesMarketableEquitySecuritiesFairValue	53286000	USD
CY2011Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	120900000	USD
CY2010Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	105700000	USD
CY2010Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	37400000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1294714000	USD
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	13478000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	385035000	USD
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1	151602000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	1679749000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	165080000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	3765508000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	96723000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	282172000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1	153536000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	4047680000	USD
CY2010Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	250259000	USD
CY2011Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Other Debt Facilities PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForOtherDebtFacilities	3600000000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	18641000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	28992000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	59762000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	14959000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	15544000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	10947000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	3682000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	13448000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	48815000	USD
CY2011	hban	Securities Gain Loss SecuritiesGainLoss	-3681000	USD
CY2010	hban	Securities Gain Loss SecuritiesGainLoss	-274000	USD
CY2009	hban	Securities Gain Loss SecuritiesGainLoss	-10249000	USD
CY2011Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	342867000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	194062000	USD
CY2010Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	435835000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	284608000	USD
CY2011	hban	Other Than Temporary Impairment Recoveries Losses Unrealized And Realized OtherThanTemporaryImpairmentRecoveriesLossesUnrealizedAndRealized	4828000	USD
CY2010	hban	Other Than Temporary Impairment Recoveries Losses Unrealized And Realized OtherThanTemporaryImpairmentRecoveriesLossesUnrealizedAndRealized	9866000	USD
CY2009	hban	Other Than Temporary Impairment Recoveries Losses Unrealized And Realized OtherThanTemporaryImpairmentRecoveriesLossesUnrealizedAndRealized	-179535000	USD
CY2011	hban	Unrealized Other Than Temporary Impairment Recognized In Other Comprehensive Income UnrealizedOtherThanTemporaryImpairmentRecognizedInOtherComprehensiveIncome	-11537000	USD
CY2010	hban	Unrealized Other Than Temporary Impairment Recognized In Other Comprehensive Income UnrealizedOtherThanTemporaryImpairmentRecognizedInOtherComprehensiveIncome	-23569000	USD
CY2009	hban	Unrealized Other Than Temporary Impairment Recognized In Other Comprehensive Income UnrealizedOtherThanTemporaryImpairmentRecognizedInOtherComprehensiveIncome	124408000	USD
CY2011	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	-6709000	USD
CY2010	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	-13703000	USD
CY2009	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	-55127000	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	0	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows	20379000	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	9895000	USD
CY2011Q4	hban	Other Than Temporary Impairment Credit Losses Recognized In Other Comprehensive Income Loss Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInOtherComprehensiveIncomeLossCreditLossesOnDebtSecuritiesHeld	89301000	USD
CY2009Q4	hban	Other Than Temporary Impairment Credit Losses Recognized In Other Comprehensive Income Loss Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInOtherComprehensiveIncomeLossCreditLossesOnDebtSecuritiesHeld	124408000	USD
CY2010Q4	hban	Other Than Temporary Impairment Credit Losses Recognized In Other Comprehensive Income Loss Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInOtherComprehensiveIncomeLossCreditLossesOnDebtSecuritiesHeld	100838000	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	1053000	USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	12907000	USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	8924000	USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	30215000	USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Cash Flows OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsCashFlows	49802000	USD
CY2010	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardAdditionsNoPreviousImpairment	2381000	USD
CY2010	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardReductionsSecuritiesSold	12968000	USD
CY2009Q4	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardCreditLossesOnDebtSecuritiesHeld	53801000	USD
CY2010	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardAdditionsAdditionalCreditLosses	11322000	USD
CY2010Q4	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardCreditLossesOnDebtSecuritiesHeld	54536000	USD
CY2011Q4	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardCreditLossesOnDebtSecuritiesHeld	56764000	USD
CY2011	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardAdditionsAdditionalCreditLosses	6667000	USD
CY2011	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardReductionsSecuritiesSold	4481000	USD
CY2011	hban	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Rollforward Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditRollforwardAdditionsNoPreviousImpairment	42000	USD
CY2011Q4	hban	Available For Sale Securities Transferred To Held To Maturity Securities AvailableForSaleSecuritiesTransferredToHeldToMaturitySecurities	469100000	USD
CY2011	hban	Unrealized Net Losses Recognized In Oci At Time Of Transfer Of Available For Sale Securities Transferred To Held To Maturity Securities UnrealizedNetLossesRecognizedInOciAtTimeOfTransferOfAvailableForSaleSecuritiesTransferredToHeldToMaturitySecurities	500000	USD
CY2011Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	0	USD
CY2011Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	640551000	USD
CY2011Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	660186000	USD
CY2011Q4	us-gaap	Heldtomaturity Securities Unrecognized Holding Gain HeldtomaturitySecuritiesUnrecognizedHoldingGain	19652000	USD
CY2011Q4	us-gaap	Held To Maturity Securities Unrecognized Holding Loss HeldToMaturitySecuritiesUnrecognizedHoldingLoss	17000	USD
CY2011	hban	Residential Mortgage Loans With Servicing Retained Sold ResidentialMortgageLoansWithServicingRetainedSold	3078475000	USD
CY2010	hban	Residential Mortgage Loans With Servicing Retained Sold ResidentialMortgageLoansWithServicingRetainedSold	3943830000	USD
CY2009	hban	Residential Mortgage Loans With Servicing Retained Sold ResidentialMortgageLoansWithServicingRetainedSold	4307526000	USD
CY2009	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	87192000	USD
CY2010	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	106495000	USD
CY2011	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	77591000	USD
CY2010Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	125679000	USD
CY2009Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	176427000	USD
CY2011	hban	Time Decay TimeDecay	4966000	USD
CY2010	hban	Time Decay TimeDecay	5359000	USD
CY2010	hban	Servicing Asset At Fair Value Payoffs ServicingAssetAtFairValuePayoffs	32668000	USD
CY2011	hban	Servicing Asset At Fair Value Payoffs ServicingAssetAtFairValuePayoffs	19464000	USD
CY2011	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-36248000	USD
CY2010	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-12721000	USD
CY2011Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	65001000	USD
CY2011	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of Other Than10 Or20 Percent Adverse Change In Prepayment Speed Percent SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfOtherThan10Or20PercentAdverseChangeInPrepaymentSpeedPercent	0.2011	pure
CY2011Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInPrepaymentSpeed	-4720000	USD
CY2011Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInPrepaymentSpeed	-9321000	USD
CY2011Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInDiscountRate	-1511000	USD
CY2011Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInDiscountRate	-3023000	USD
CY2011	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of Other Than10 Or20 Percent Adverse Change In Discount Rate Percent SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfOtherThan10Or20PercentAdverseChangeInDiscountRatePercent	0.065	pure
CY2011Q3	hban	Total Of Automobile Loans Transferred In A Securitization Transaction TotalOfAutomobileLoansTransferredInASecuritizationTransaction	1000000000	USD
CY2011	hban	Net Proceeds Received In Securitization Transaction NetProceedsReceivedInSecuritizationTransaction	1000000000	USD
CY2011	hban	Gain Or Loss From Sale Of Automobile Loans In Securitizations GainOrLossFromSaleOfAutomobileLoansInSecuritizations	15500000000	USD
CY2011Q4	hban	Actual Auto Servicing Income Assumption Low ActualAutoServicingIncomeAssumptionLow	0.0055	pure
CY2011Q4	hban	Actual Auto Servicing Income Assumption High ActualAutoServicingIncomeAssumptionHigh	0.01	pure
CY2011Q4	hban	Adequate Compensation For Servicing Auto Assumption Low AdequateCompensationForServicingAutoAssumptionLow	0.0045	pure
CY2011Q4	hban	Adequate Compensation For Servicing Auto Assumption High AdequateCompensationForServicingAutoAssumptionHigh	0.007	pure
CY2011Q4	hban	Other Ancillary Fees Auto Assumption Low OtherAncillaryFeesAutoAssumptionLow	0.0035	pure
CY2011Q4	hban	Other Ancillary Fees Auto Assumption High OtherAncillaryFeesAutoAssumptionHigh	0.005	pure
CY2011Q4	hban	Discount Rate Auto Assumption High DiscountRateAutoAssumptionHigh	0.1	pure
CY2011	hban	Changes In Carrying Value Of Automobile Loan Servicing Rights ChangesInCarryingValueOfAutomobileLoanServicingRights	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:36px;">Changes in the carrying value of automobile loan servicing rights for the years ended December 31, 2011 and 2010, and the fair value at the end of each period were as follows:</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 17px"><td style="width: 18px; text-align:left;border-color:#000000;min-width:18px;"> </td><td style="width: 487px; text-align:left;border-color:#000000;min-width:487px;"> </td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; text-align:left;border-color:#000000;min-width:76px;"> </td><td style="width: 18px; text-align:left;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; text-align:left;border-color:#000000;min-width:76px;"> <sup></sup></td></tr><tr style="height: 17px"><td colspan="2" style="width: 505px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:505px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: left;">(dollar amounts in thousands)</font></td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:76px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">2011</font></td><td style="width: 18px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:76px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: center;">2010</font><sup></sup></td></tr><tr style="height: 17px"><td colspan="2" style="width: 505px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:505px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Carrying value, beginning of year</font></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 76px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 97</font></td><td style="width: 18px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 76px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 12,912</font><sup></sup></td></tr><tr style="height: 17px"><td colspan="2" style="width: 505px; text-align:left;border-color:#000000;min-width:505px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">New servicing assets created</font></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> 16,039</font></td><td style="width: 18px; text-align:right;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> ---</font><sup></sup></td></tr><tr style="height: 16px"><td colspan="2" style="width: 505px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:505px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Amortization and other</font></td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> (2,759)</font></td><td style="width: 18px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;"> (12,815)</font><sup>(1)</sup></td></tr><tr style="height: 17px"><td colspan="2" style="width: 505px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:505px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Carrying value, end of year</font></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 76px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 13,377</font></td><td style="width: 18px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 76px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 97</font><sup></sup></td></tr><tr style="height: 6px"><td style="width: 18px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:18px;"> </td><td style="width: 487px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:487px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:76px;"> </td><td style="width: 18px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:76px;"> <sup></sup></td></tr><tr style="height: 17px"><td colspan="2" style="width: 505px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:505px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Fair value, end of year</font></td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 76px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 13,428</font></td><td style="width: 18px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:9px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">$</font></td><td style="width: 76px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:76px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 278</font><sup></sup></td></tr><tr style="height: 7px"><td style="width: 18px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:18px;"> </td><td style="width: 487px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:487px;"> </td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:76px;"> </td><td style="width: 18px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:18px;"> <sup></sup></td><td style="width: 9px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:9px;"> </td><td style="width: 76px; border-top-style:solid;border-top-width:1px;text-align:left;border-color:#000000;min-width:76px;"> <sup></sup></td></tr><tr style="height: 38px"><td style="width: 18px; text-align:left;border-color:#000000;min-width:18px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">(1)</font></td><td colspan="6" style="width: 675px; text-align:left;border-color:#000000;min-width:675px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Included a $12.4 million reduction related to the consolidation of an automobile securitization trust upon the adoption of amended accounting guidance on January 1, 2010. </font><font style="FONT-STYLE: italic;FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">See Consolidated VIEs (2009 Automobile Trust) in Note 21.</font><sup></sup></td></tr></table></div>
CY2011Q4	hban	Expected Potential Automobile Loan Securitizaton Maximum ExpectedPotentialAutomobileLoanSecuritizatonMaximum	1300000000	USD
CY2009Q4	us-gaap	Goodwill Goodwill	444268000	USD
CY2010	us-gaap	Goodwill Other Changes GoodwillOtherChanges	0	USD
CY2011	us-gaap	Goodwill Other Changes GoodwillOtherChanges	0	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	506584000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	506584000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	277964000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	331282000	USD
CY2011	us-gaap	Future Amortization Expense Year One FutureAmortizationExpenseYearOne	46075000	USD
CY2011	us-gaap	Future Amortization Expense Year Two FutureAmortizationExpenseYearTwo	40511000	USD
CY2011	us-gaap	Future Amortization Expense Year Three FutureAmortizationExpenseYearThree	35858000	USD
CY2011	us-gaap	Future Amortization Expense Year Four FutureAmortizationExpenseYearFour	19758000	USD
CY2011	us-gaap	Future Amortization Expense Year Five FutureAmortizationExpenseYearFive	6606000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1305203000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	-788618000	USD
CY2010Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	-813601000	USD
CY2011	hban	Total Depreciation And Amotization Of Premises And Equipment TotalDepreciationAndAmotizationOfPremisesAndEquipment	70413000	USD
CY2011	hban	Rental Income Credited To Occupancy Expense RentalIncomeCreditedToOccupancyExpense	10878000	USD
CY2010	hban	Total Depreciation And Amotization Of Premises And Equipment TotalDepreciationAndAmotizationOfPremisesAndEquipment	64934000	USD
CY2009	hban	Total Depreciation And Amotization Of Premises And Equipment TotalDepreciationAndAmotizationOfPremisesAndEquipment	66089000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1353047000	USD
CY2009	hban	Rental Income Credited To Occupancy Expense RentalIncomeCreditedToOccupancyExpense	11755000	USD
CY2010	hban	Rental Income Credited To Occupancy Expense RentalIncomeCreditedToOccupancyExpense	10108000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Weighted Average Interest Rate FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresWeightedAverageInterestRate	0.0019	pure
CY2010Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Weighted Average Interest Rate FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresWeightedAverageInterestRate	0.0056	pure
CY2011Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	3500000000	USD
CY2010Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	2300000000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary FederalHomeLoanBankAdvancesMaturitiesSummary	363000000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	350000000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From One To Two Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate	5200000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Two To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate	0	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Three To Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate	0	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Four To Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate	0	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due After Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterFiveYearsOfBalanceSheetDate	7800000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	600161000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	30869000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	108377000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	483644000	USD
CY2011Q4	hban	Transfer To Tower Hill Municipal Securities TransferToTowerHillMunicipalSecurities	92100000	USD
CY2011Q4	hban	Transfer To Tower Hill Hpci Class E Preferred Stock TransferToTowerHillHpciClassEPreferredStock	86000000	USD
CY2011Q4	hban	Transfer To Tower Hill Cash TransferToTowerHillCash	6100000	USD
CY2011Q4	hban	Received From Tower Hill Stock ReceivedFromTowerHillStock	184100000	USD
CY2011Q4	hban	Securities Issued By Tower Hill SecuritiesIssuedByTowerHill	65000000	USD
CY2011Q4	hban	Retired Subordinated Notes RetiredSubordinatedNotes	36100000	USD
CY2011Q4	hban	Trust Preferred Securities Exchanged With Applicable Trust TrustPreferredSecuritiesExchangedWithApplicableTrust	32500000	USD
CY2011Q4	hban	Trust Preferred Securities Expected To Be Exchanged TrustPreferredSecuritiesExpectedToBeExchanged	3000000	USD
CY2009Q4	hban	Retired Subordinated Notes RetiredSubordinatedNotes	702400000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	10242000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-35623000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	2794000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-12780000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	21888000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease	-29263000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	14227000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	21557000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	5188000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	-27519000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease	78626000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-91998000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Before Tax Period Increase Decrease OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecrease	36513000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-40511000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Before Tax Period Increase Decrease OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecrease	-62068000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	23733000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	169708000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	7982000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-23155000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-12468000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease	-82885000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Before Tax Period Increase Decrease OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecrease	261706000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	7661000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	29010000	USD
CY2008Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-326693000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-156985000	USD
CY2009	hban	Accumulated Other Comprehensive Income Period Change AccumulatedOtherComprehensiveIncomePeriodChange	173249000	USD
CY2010	hban	Accumulated Other Comprehensive Income Period Change AccumulatedOtherComprehensiveIncomePeriodChange	-36262000	USD
CY2011	hban	Accumulated Other Comprehensive Income Period Change AccumulatedOtherComprehensiveIncomePeriodChange	23733000	USD
CY2010	hban	Cumulative Effect Of Change In Accounting Principle For Consolidation Of Variable Interest Entities Net Of Tax CumulativeEffectOfChangeInAccountingPrincipleForConsolidationOfVariableInterestEntitiesNetOfTax	-4249000	USD
CY2009Q4	hban	Cumulativeeffectofchangeinaccountingprincipleforotherthantemporarilyimpaireddebtsecuritiesnetoftax Cumulativeeffectofchangeinaccountingprincipleforotherthantemporarilyimpaireddebtsecuritiesnetoftax	-3541000	USD
CY2011Q4	hban	Unrealized Losses Transferred From Available For Sale Securities Portfolio To Held To Maturity Securities UnrealizedLossesTransferredFromAvailableForSaleSecuritiesPortfolioToHeldToMaturitySecurities	400000	USD
CY2008	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	1400000000	USD
CY2008	hban	Conversion Of Stock Shares To Be Issued ConversionOfStockSharesToBeIssued	23600000	shares
CY2008Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2008Q4	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights	8.90
CY2011Q1	hban	Purchase Price Of Warrants Repurchased Originally Issued To Treasury PurchasePriceOfWarrantsRepurchasedOriginallyIssuedToTreasury	49100000	USD
CY2011Q4	hban	Floating Rate Series B Noncumulative Perpetual Preferred Stock Exchanged FloatingRateSeriesBNoncumulativePerpetualPreferredStockExchanged	35500000	USD
CY2011	hban	Stock Issued During Period Value New Issues Series B StockIssuedDuringPeriodValueNewIssuesSeriesB	23800000	USD
CY2011Q4	hban	Gains Losses On Extinguishmentof Sub Debt GainsLossesOnExtinguishmentofSubDebt	9700000	USD
CY2008Q4	hban	Term To Exercise Warrants Years TermToExerciseWarrantsYears	10Y
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	511800000	USD
CY2011	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1017000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2916000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	876000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1722000	shares
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	140315000	USD
CY2009	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-3268935000	USD
CY2009	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	0	shares
CY2009	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	0	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	0	shares
CY2009	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	0	shares
CY2011	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3933000	shares
CY2010	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2598000	shares
CY2009	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	23600000	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	18500000	shares
CY2009	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	23700000	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Net Income Per Outstanding Unit Amount AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount	12.52
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Net Income Per Outstanding Unit Amount AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount	18.05
CY2009	us-gaap	Antidilutive Securities Excluded From Computation Of Net Income Per Outstanding Unit Amount AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount	19.71
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0195	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0263	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6.0
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.40
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6.0
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.385	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.023	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.20
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0068	pure
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6.0
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0096	pure
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.518	pure
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.95
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.027	pure
CY2009	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8492000	USD
CY2009	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2972000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	19666000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6708000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	15453000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5408000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	21862000	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	27205000	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	10918000	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	13649000	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	26075000	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	18.70
CY2011	hban	Share Based Compensation Arrangement By Share Based Payment Award Option Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisesInPeriodWeightedAverageExercisePrice	4.03
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	11.71
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	17.03
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	11.47
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	15.96
CY2011	hban	Share Based Compensation Arrangement By Share Based Payment Award Option Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionGrantsInPeriodWeightedAverageExercisePrice	6.00
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm	4.1
CY2011Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm1	4.2
CY2011Q4	hban	Share Based Compensation Arrangement By Share Based Payment Award Option Exercisable Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisableWeightedAverageRemainingContractualTerm	2.1
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	3469000	USD
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3542000	USD
CY2011Q4	hban	Share Based Compensation Arrangement By Share Based Payment Award Option Exercisable Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionExercisableIntrinsicValue	1968000	USD
CY2011	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	-124000	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	-5451000	shares
CY2011	hban	Award Vested As Of Grant Date AwardVestedAsOfGrantDate	0.01	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod	Over three years
CY2009	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2011	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	500000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	200000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	100000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	100000	USD
CY2011	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	6.24
CY2010	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	6.15
CY2009	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	3.68
CY2011Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	28200000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition	1.9
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	11200000	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	3000000	USD
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	1800000	USD
CY2011Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	27205000	shares
CY2011Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm1	4.2
CY2011Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	11.47
CY2011Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	13649000	shares
CY2011Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	17.03
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	37800000	shares
CY2011	hban	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssued	34800000	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	3000000	shares
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17214000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	32292000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	49506000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	-37610000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	11896000	USD
CY2008Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	10750000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	6464000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	247532000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	100000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	2200000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	2300000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	10468000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	40675000	USD
CY2009	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-326659000	USD
CY2009	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	9860000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	29539000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-5040000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	5428000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	70214000	USD
CY2009	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-316799000	USD
CY2009	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-267872000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-30243000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	158709000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	484000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-7000	USD
CY2009	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	667000	USD
CY2009	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-267205000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-30250000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	159193000	USD
CY2009Q4	hban	Current Federal Tax Expense Benefit Securities Transactions CurrentFederalTaxExpenseBenefitSecuritiesTransactions	3600000	USD
CY2010Q4	hban	Current Federal Tax Expense Benefit Securities Transactions CurrentFederalTaxExpenseBenefitSecuritiesTransactions	100000	USD
CY2011Q4	hban	Current Federal Tax Expense Benefit Securities Transactions CurrentFederalTaxExpenseBenefitSecuritiesTransactions	1300000	USD
CY2009	hban	Effective Income Tax Reconciliation Undistributed And Repatriation Of Foreign Earnings EffectiveIncomeTaxReconciliationUndistributedAndRepatriationOfForeignEarnings	-3179000	USD
CY2009	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-12847000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	123310000	USD
CY2009	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1287364000	USD
CY2009	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	-5561000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	-6680000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	-9695000	USD
CY2011	hban	Effective Income Tax Reconciliation Tax Exempt Bank Owned Life Insurance Income EffectiveIncomeTaxReconciliationTaxExemptBankOwnedLifeInsuranceIncome	-21169000	USD
CY2010	hban	Effective Income Tax Reconciliation Tax Exempt Bank Owned Life Insurance Income EffectiveIncomeTaxReconciliationTaxExemptBankOwnedLifeInsuranceIncome	-20595000	USD
CY2009	hban	Effective Income Tax Reconciliation Tax Exempt Bank Owned Life Insurance Income EffectiveIncomeTaxReconciliationTaxExemptBankOwnedLifeInsuranceIncome	-19205000	USD
CY2009	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	0	USD
CY2010	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	0	USD
CY2011	us-gaap	Income Tax Reconciliation Deductions Dividends IncomeTaxReconciliationDeductionsDividends	-17744000	USD
CY2011	hban	Effective Income Tax Reconciliation Undistributed And Repatriation Of Foreign Earnings EffectiveIncomeTaxReconciliationUndistributedAndRepatriationOfForeignEarnings	0	USD
CY2010	hban	Effective Income Tax Reconciliation Undistributed And Repatriation Of Foreign Earnings EffectiveIncomeTaxReconciliationUndistributedAndRepatriationOfForeignEarnings	46160000	USD
CY2010	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	0	USD
CY2011	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	0	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	-31269000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	-23360000	USD
CY2009	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	-17602000	USD
CY2009	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-899000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2011	us-gaap	Income Tax Reconciliation Disposition Of Assets IncomeTaxReconciliationDispositionOfAssets	-7000000	USD
CY2010	us-gaap	Income Tax Reconciliation Disposition Of Assets IncomeTaxReconciliationDispositionOfAssets	-62681000	USD
CY2009	us-gaap	Income Tax Reconciliation Disposition Of Assets IncomeTaxReconciliationDispositionOfAssets	0	USD
CY2009	hban	Effective Income Tax Reconciliation Loan Acquisitions EffectiveIncomeTaxReconciliationLoanAcquisitions	-159895000	USD
CY2010	hban	Effective Income Tax Reconciliation Loan Acquisitions EffectiveIncomeTaxReconciliationLoanAcquisitions	-43650000	USD
CY2011	hban	Effective Income Tax Reconciliation Loan Acquisitions EffectiveIncomeTaxReconciliationLoanAcquisitions	0	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2009	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	908263000	USD
CY2009	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6842000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	19196000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-2962000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	6928000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	9163000	USD
CY2009	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	6544000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	348269000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	457692000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Other Tax Carryforwards DeferredTaxAssetsOtherTaxCarryforwards	262504000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other Tax Carryforwards DeferredTaxAssetsOtherTaxCarryforwards	217877000	USD
CY2011Q4	hban	Deferred Tax Assets Fair Value Adjustments DeferredTaxAssetsFairValueAdjustments	92569000	USD
CY2010Q4	hban	Deferred Tax Assets Fair Value Adjustments DeferredTaxAssetsFairValueAdjustments	106855000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	32736000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	39685000	USD
CY2010Q4	hban	Deferred Tax Assets Purchase Accounting Adjustments DeferredTaxAssetsPurchaseAccountingAdjustments	11773000	USD
CY2011Q4	hban	Deferred Tax Assets Purchase Accounting Adjustments DeferredTaxAssetsPurchaseAccountingAdjustments	10556000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	0	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	5671000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	20309000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	15661000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	717668000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	904489000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	87735000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	65029000	USD
CY2011Q4	hban	Deferred Tax Liabilities Purchase Accounting Adjustments DeferredTaxLiabilitiesPurchaseAccountingAdjustments	51754000	USD
CY2010Q4	hban	Deferred Tax Liabilities Purchase Accounting Adjustments DeferredTaxLiabilitiesPurchaseAccountingAdjustments	65787000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	43182000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	51124000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	45948000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	43541000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	66090000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	40273000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	33511000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	15161000	USD
CY2010Q4	hban	Deferred Tax Liabilities Pension And Other Employee Benefits DeferredTaxLiabilitiesPensionAndOtherEmployeeBenefits	0	USD
CY2011Q4	hban	Deferred Tax Liabilities Pension And Other Employee Benefits DeferredTaxLiabilitiesPensionAndOtherEmployeeBenefits	19290000	USD
CY2011Q4	hban	Deferred Tax Liabilities Partnership Investments DeferredTaxLiabilitiesPartnershipInvestments	6761000	USD
CY2010Q4	hban	Deferred Tax Liabilities Partnership Investments DeferredTaxLiabilitiesPartnershipInvestments	8429000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4441000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	15558000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	329248000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	334366000	USD
CY2010Q4	hban	Deferred Tax Assets Liabilities Net Before Valuation Allowance DeferredTaxAssetsLiabilitiesNetBeforeValuationAllowance	570123000	USD
CY2011Q4	hban	Deferred Tax Assets Liabilities Net Before Valuation Allowance DeferredTaxAssetsLiabilitiesNetBeforeValuationAllowance	388420000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	-23594000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	-31817000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	538306000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	364826000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	111000000	USD
CY2011	us-gaap	Operating Loss Carryforwards Expiration Dates OperatingLossCarryforwardsExpirationDates	2023
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	37200000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	46100000	USD
CY2011	us-gaap	Tax Credit Carryforward Expiration Dates TaxCreditCarryforwardExpirationDates	2029
CY2011Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	23600000	USD
CY2011	us-gaap	Other Tax Carryforward Expiration Dates OtherTaxCarryforwardExpirationDates	2015
CY2011	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	8200000	USD
CY2010Q4	hban	Fair Value Of Plan Assets Percentage FairValueOfPlanAssetsPercentage	1.00	pure
CY2011Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	538970000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	478479000	USD
CY2011Q4	hban	Fair Value Of Plan Assets Percentage FairValueOfPlanAssetsPercentage	1.00	pure
CY2011	us-gaap	Defined Benefit Plan Description Of Direction And Pattern Of Change For Assumed Health Care Cost Trend Rate DefinedBenefitPlanDescriptionOfDirectionAndPatternOfChangeForAssumedHealthCareCostTrendRate	These rates are assumed to decrease gradually
CY2011Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	177092000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	156551000	USD
CY2011	hban	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-215628000	USD
CY2011	hban	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	30261000	USD
CY2011	hban	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	3000	USD
CY2011Q4	hban	Defined Benefit Plan Accumulated Other Comprehensive Income Loss After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossAfterTax	-185364000	USD
CY2009	hban	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-151564000	USD
CY2009	hban	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	39093000	USD
CY2009	hban	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	3000	USD
CY2009Q4	hban	Defined Benefit Plan Accumulated Other Comprehensive Income Loss After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossAfterTax	-112468000	USD
CY2010	hban	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	-166183000	USD
CY2010	hban	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	34688000	USD
CY2010	hban	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	6000	USD
CY2010Q4	hban	Defined Benefit Plan Accumulated Other Comprehensive Income Loss After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossAfterTax	-131489000	USD
CY2010Q4	hban	Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Before Tax PensionAndOtherPostretirementBenefitPlansAccumulatedOtherComprehensiveIncomeLossBeforeTax	-202292000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-104146000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	28077000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	-6811000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostBeforeTax	-5000	USD
CY2011Q4	hban	Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Before Tax PensionAndOtherPostretirementBenefitPlansAccumulatedOtherComprehensiveIncomeLossBeforeTax	-285177000	USD
CY2009Q4	hban	Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Before Tax PensionAndOtherPostretirementBenefitPlansAccumulatedOtherComprehensiveIncomeLossBeforeTax	-173029000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-45804000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	23313000	USD
CY2010	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	-6777000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostBeforeTax	5000	USD
CY2008Q4	hban	Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Before Tax PensionAndOtherPostretirementBenefitPlansAccumulatedOtherComprehensiveIncomeLossBeforeTax	-251655000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-6155000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	14153000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	69986000	USD
CY2009	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	-283000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostBeforeTax	925000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-67695000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	18250000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-4427000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	-3000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-29773000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	15154000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-4405000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	3000	USD
CY2008Q4	hban	Defined Benefit Plan Accumulated Other Comprehensive Income Loss After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossAfterTax	-163575000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-4001000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	9199000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	45492000	USD
CY2009	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-184000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTax	601000	USD
CY2010Q4	hban	Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Tax PensionAndOtherPostretirementBenefitPlansAccumulatedOtherComprehensiveIncomeLossTax	70803000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	36451000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-9827000	USD
CY2011	hban	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Prior Service Cost Credit Arising During Period Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostCreditArisingDuringPeriodTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax Effect OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostTaxEffect	2384000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plant Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlantNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostTax	2000	USD
CY2011Q4	hban	Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Tax PensionAndOtherPostretirementBenefitPlansAccumulatedOtherComprehensiveIncomeLossTax	99813000	USD
CY2009Q4	hban	Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Tax PensionAndOtherPostretirementBenefitPlansAccumulatedOtherComprehensiveIncomeLossTax	60561000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	16031000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-8159000	USD
CY2010	hban	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Prior Service Cost Credit Arising During Period Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostCreditArisingDuringPeriodTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax Effect OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostTaxEffect	2372000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plant Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlantNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostTax	-2000	USD
CY2008Q4	hban	Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Tax PensionAndOtherPostretirementBenefitPlansAccumulatedOtherComprehensiveIncomeLossTax	88080000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	2154000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	-4954000	USD
CY2009	hban	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Prior Service Cost Credit Arising During Period Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostCreditArisingDuringPeriodTax	-24494000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax Effect OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostTaxEffect	99000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plant Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlantNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostTax	-324000	USD
CY2011	hban	Attributes Of Employees Contribution To Defined Contribution Plan AttributesOfEmployeesContributionToDefinedContributionPlan	Half of the employee contribution was matched on the 4th and 5th percent of base pay contributed to the Plan.
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	15000000	USD
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8800000	USD
CY2009	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3100000	USD
CY2011	hban	Average Duration Of Plan Assets Investment In Bonds AverageDurationOfPlanAssetsInvestmentInBonds	3.3Y
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Equity Securities DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecurities	0.7	USD
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Debt Securities DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecurities	0.3	USD
CY2011	hban	Base Pay Contributed To Plan BasePayContributedToPlan	up to first 3%
CY2011	hban	Life Insurance Coverage Maximum LifeInsuranceCoverageMaximum	50000	USD
CY2011	hban	Employees Retirement Age For Health Care And Life Insurance Benefits EmployeesRetirementAgeForHealthCareAndLifeInsuranceBenefits	55 years
CY2011	us-gaap	Deferred Compensation Arrangement With Individual Requisite Service Period DeferredCompensationArrangementWithIndividualRequisiteServicePeriod	10 years
CY2011	hban	Contributions Received For Retiree Medical Program ContributionsReceivedForRetireeMedicalProgram	2900000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	112400000	USD
CY2011	hban	Defined Benefit Plan Expenses DefinedBenefitPlanExpenses	800000	USD
CY2010	hban	Defined Benefit Plan Expenses DefinedBenefitPlanExpenses	1000000	USD
CY2009	hban	Defined Benefit Plan Expenses DefinedBenefitPlanExpenses	700000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Net Transition Asset Obligation DefinedBenefitPlanAmortizationOfNetTransitionAssetObligation	1000000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Net Prior Service Cost Credit DefinedBenefitPlanAmortizationOfNetPriorServiceCostCredit	6900000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Net Gains Losses DefinedBenefitPlanAmortizationOfNetGainsLosses	26800000	USD
CY2011	hban	Estimated Life Of Benefit Obligations EstimatedLifeOfBenefitObligations	13Y
CY2011	hban	Estimated Net Periodic Pension Cost In Next Fiscal Year EstimatedNetPeriodicPensionCostInNextFiscalYear	38700000	USD
CY2011	hban	Estimated Net Periodic Post Retirement Benefit Cost In Next Fiscal Year EstimatedNetPeriodicPostRetirementBenefitCostInNextFiscalYear	0	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	1000000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents	200000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	1000000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation	200000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Year That Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearThatRateReachesUltimateTrendRate	2028
CY2011	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.045	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	26900000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	651300000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	575900000	USD
CY2010Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	23100000	USD
CY2011	us-gaap	Deferred Compensation Arrangement With Individual Employer Contribution DeferredCompensationArrangementWithIndividualEmployerContribution	90000000	USD
CY2011	hban	Supplemental Executive Retirement Plan And Supplemental Retirement Income Plan SupplementalExecutiveRetirementPlanAndSupplementalRetirementIncomePlan	1800000	USD
CY2010	hban	Supplemental Executive Retirement Plan And Supplemental Retirement Income Plan SupplementalExecutiveRetirementPlanAndSupplementalRetirementIncomePlan	1800000	USD
CY2009	hban	Supplemental Executive Retirement Plan And Supplemental Retirement Income Plan SupplementalExecutiveRetirementPlanAndSupplementalRetirementIncomePlan	2900000	USD
CY2011Q4	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	343588000	USD
CY2010Q4	us-gaap	Mortgages Held For Sale Fair Value Disclosure MortgagesHeldForSaleFairValueDisclosure	754117000	USD
CY2010Q4	us-gaap	Loans Held For Sale Mortgages LoansHeldForSaleMortgages	749982000	USD
CY2011	hban	Fairvaluemeasurementpolicypolicytextblock Fairvaluemeasurementpolicypolicytextblock	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> follows the fair value accounting guidance under ASC 820 and ASC 825. </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A three-level valuation hierarchy was established for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The three levels are defined as follows:</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:18px;">Level 1</font><font style="font-family:Times New Roman;font-size:10pt;"> – inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:18px;">Level 2</font><font style="font-family:Times New Roman;font-size:10pt;"> – inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-style:italic;margin-left:18px;">Level 3</font><font style="font-family:Times New Roman;font-size:10pt;"> – inputs to the valuation methodology are unobservable and significant to the fair value measurement.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">A financial instrument's categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Transfers in and out of Level 1, 2, or 3 are recorded at fair value at the beginning of the reporting period. </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Following is a description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy. </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;font-style:italic;margin-left:0px;">Mortgage loans held for sale</font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> elected to apply the fair value option for mortgage loans originated with the intent to sell which are included in loans held for sale. Mortgage loans held for sale are classified as Level 2 and are estimated using security prices for similar product types.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;font-style:italic;margin-left:0px;">Available-for-sale securities and trading account securities</font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Securities accounted for at fair value include both the available-for-sale and trading portfolios. </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> uses prices obtained from third party pricing services and recent trades to determine the fair value of securities. AFS and trading securities are classified as Level 1 using quoted market prices (unadjusted) in active markets for identical securities that </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> has the ability to access at the measurement date. </font><font style="font-family:Times New Roman;font-size:10pt;">1</font><font style="font-family:Times New Roman;font-size:10pt;">% of the positions in these portfolios are Level 1, and consist of U.S. Treasury securities and money market mutual funds. When quoted market prices are not available, fair values are classified as Level 2 using quoted prices for similar assets in active markets, quoted prices of identical or similar assets in markets that are not active, and inputs that are observable for the asset, either directly or indirectly, for substantially the full term of the financial instrument. </font><font style="font-family:Times New Roman;font-size:10pt;">95</font><font style="font-family:Times New Roman;font-size:10pt;">% of the positions in these portfolios are Level 2, and consist of U.S. Government and agency debt securities, agency mortgage backed securities, asset-backed securities, municipal securities and other securities. For both Level 1 and Level 2 securities, management uses various methods and techniques to corroborate prices obtained from the pricing service, including reference to dealer or other market quotes, and by reviewing valuations of comparable instruments. If relevant market prices are limited or unavailable, valuations may require significant management judgment or estimation to determine fair value, in which case the fair values are classified as Level 3. </font><font style="font-family:Times New Roman;font-size:10pt;">4</font><font style="font-family:Times New Roman;font-size:10pt;">% of our positions are Level 3, and consist of non-agency ALT-A asset-backed securities, private-label CMO securities, pooled-trust-preferred CDO securities and municipal securities.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">For non-agency ALT-A asset-backed securities, private-label CMO securities, and pooled-trust-preferred CDO securities the fair value methodology incorporates values obtained from proprietary discounted cash flow models provided by a third party. The modeling process for the ALT-A asset-backed securities and private-label CMO securities incorporates assumptions management believes market participants would use to value the security under current market conditions. The assumptions used include prepayment projections, credit loss assumptions, and discount rates, which include a risk premium due to liquidity and uncertainty that are based on both observable and unobservable inputs. </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> validates the reasonableness of the assumptions by comparing the assumptions with market information. </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> uses the discounted cash flow analysis, in conjunction with other relevant pricing information obtained from third party pricing services or broker quotes to establish the fair value that management believes is representative under current market conditions. For purposes of determining fair value at </font><font style="font-family:Times New Roman;font-size:10pt;">December</font><font style="font-family:Times New Roman;font-size:10pt;"> 3</font><font style="font-family:Times New Roman;font-size:10pt;">1</font><font style="font-family:Times New Roman;font-size:10pt;">, </font><font style="font-family:Times New Roman;font-size:10pt;">2011</font><font style="font-family:Times New Roman;font-size:10pt;">, the discounted cash flow modeling was the predominant input. The modeling of the fair value of the pooled-trust-preferred CDO's utilizes a similar methodology, with the probability of default ("PD") of each issuer being the most critical input. Management evaluates the PD assumptions provided to the third party pricing service by comparing the current PD to the assumptions used the previous quarter, actual defaults and deferrals in the current period, and trend data on certain financial ratios of the issuers. </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> also evaluates the assumptions related to discount rates and prepayments. Each quarter, the Company seeks to obtain information on actual trades of securities with similar characteristics to further support our fair value estimates and our underlying assumptions. For purposes of determining fair value at </font><font style="font-family:Times New Roman;font-size:10pt;">December</font><font style="font-family:Times New Roman;font-size:10pt;"> 3</font><font style="font-family:Times New Roman;font-size:10pt;">1</font><font style="font-family:Times New Roman;font-size:10pt;">, </font><font style="font-family:Times New Roman;font-size:10pt;">2011</font><font style="font-family:Times New Roman;font-size:10pt;">, the discounted cash flow modeling was the predominant input.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> utilizes the same processes to determine the fair value of investment securities classified as held-to-maturity for impairment evaluation purposes.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;font-style:italic;margin-left:0px;">Automobile loans</font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Effective January 1, 2010, </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> consolidated an automobile loan securitization that previously had been accounted for as an off-balance sheet transaction. As a result, </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> elected to account for the automobile loan receivables and the associated notes payable at fair value per guidance supplied in ASC 825, “Financial Instruments”. The automobile loan receivables are classified as Level 3. The key assumptions used to determine the fair value of the automobile loan receivables included projections of expected losses and prepayment of the underlying loans in the portfolio and a market assumption of interest rate spreads. Certain interest rates are available from similarly traded securities while other interest rates are developed internally based on similar asset-backed security transactions in the market. </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;font-style:italic;margin-left:0px;">MSRs </font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">MSRs do not trade in an active market with readily observable prices. Accordingly, the fair value of these assets is classified as Level 3. </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> determines the fair value of MSRs using an income approach model based upon our month-end interest rate curve and prepayment assumptions. The model, which is operated and maintained by a third party, utilizes assumptions to estimate future net servicing income cash flows, including estimates of time decay, payoffs, and changes in valuation inputs and assumptions. Servicing brokers and other sources of information (e.g. discussion with other mortgage servicers and industry surveys) are used to obtain information on market practice and assumptions. On at least a quarterly basis, third party marks are obtained from at least one service broker. </font><font style="font-family:Times New Roman;font-size:10pt;">Huntington</font><font style="font-family:Times New Roman;font-size:10pt;"> reviews the valuation assumptions against this market data for reasonableness and adjusts the assumptions if deemed appropriate. Any recommended change in assumptions and / or inputs are presented for review to the Mortgage Price Risk Subcommittee for final approval. </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;font-style:italic;margin-left:0px;">Derivatives</font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Derivatives classified as Level 1 consist of exchange traded options and forward commitments to deliver mortgage-backed securities which are valued using quoted prices. Asset and liability conversion swaps and options, and interest rate caps are classified as Level 2. These derivative positions are valued using a discounted cash flow method that incorporates current market interest rates. Derivatives classified as Level 3 consist primarily of interest rate lock agreements related to mortgage loan commitments. The determination of fair value includes assumptions related to the likelihood that a commitment will ultimately result in a closed loan, which is a significant unobservable assumption.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;font-style:italic;margin-left:0px;">Securitization trust notes payable</font></p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:18px;">Consists of certain securitization trust notes payable related to the automobile loan receivables measured at fair value. The notes payable are classified as Level 2 and are valued based on interest rates for similar financial instruments.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p>
CY2011	hban	Federal Agencies Mortgage Backed Securities Transferred To Held To Maturity Securities Portfolio FederalAgenciesMortgageBackedSecuritiesTransferredToHeldToMaturitySecuritiesPortfolio	469100000	USD
CY2011Q4	us-gaap	Loans Held For Sale Mortgages LoansHeldForSaleMortgages	328641000	USD
CY2011Q4	hban	Impaired Loans Fair Value Based Upon Collateral Value ImpairedLoansFairValueBasedUponCollateralValue	129000000	USD
CY2011Q4	hban	Oreo Assets Fair Value OreoAssetsFairValue	38400000	USD
CY2010Q4	hban	Aggregate Credit Risk Net Of Collateral AggregateCreditRiskNetOfCollateral	39900000	USD
CY2011Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	233500000	USD
CY2011Q4	hban	Investment Securities And Cash Collateral Pledged To Company InvestmentSecuritiesAndCashCollateralPledgedToCompany	127000000	USD
CY2011Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	3500000	USD
CY2011Q4	hban	Aggregate Credit Risk Net Of Collateral AggregateCreditRiskNetOfCollateral	36400000	USD
CY2011Q4	us-gaap	Notional Amount Of Fair Value Hedge Instruments NotionalAmountOfFairValueHedgeInstruments	1621912000	USD
CY2011Q4	us-gaap	Notional Amount Of Cash Flow Hedge Instruments NotionalAmountOfCashFlowHedgeInstruments	7085000000	USD
CY2011Q4	us-gaap	Notional Amount Of Derivatives NotionalAmountOfDerivatives	8706912000	USD
CY2011Q4	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	8706912000	USD
CY2011Q4	hban	Average Maturity Of Interest Rate Derivative In Years AverageMaturityOfInterestRateDerivativeInYears	2.0
CY2011Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	175932000	USD
CY2011Q4	hban	Weighted Average Rate Receive WeightedAverageRateReceive	0.0168	pure
CY2011Q4	hban	Weighted Average Rate Pay WeightedAverageRatePay	0.0062	pure
CY2010	hban	Increase Decrease To Net Interest Income Due To Derivative Adjustment IncreaseDecreaseToNetInterestIncomeDueToDerivativeAdjustment	192200000	USD
CY2009	hban	Increase Decrease To Net Interest Income Due To Derivative Adjustment IncreaseDecreaseToNetInterestIncomeDueToDerivativeAdjustment	167900000	USD
CY2011	hban	Increase Decrease To Net Interest Income Due To Derivative Adjustment IncreaseDecreaseToNetInterestIncomeDueToDerivativeAdjustment	113900000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	3172000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	51943000	USD
CY2009	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-66600000	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-3107000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	115692000	USD
CY2009	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-125096000	USD
CY2011Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	30200000000	USD
CY2011Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	554496000	USD
CY2011Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets VariableInterestEntityNonconsolidatedCarryingAmountAssets	17364000	USD
CY2011	us-gaap	Debt Instrument Description Of Variable Rate Basis DebtInstrumentDescriptionOfVariableRateBasis	three month LIBOR
CY2011	hban	Maximum Year To Defer Payment Of Interest On Debenture MaximumYearToDeferPaymentOfInterestOnDebenture	not exceeding five years
CY2011Q4	hban	Commitments To Limited Partnership Interests CommitmentsToLimitedPartnershipInterests	376100000	USD
CY2010Q4	hban	Commitments To Limited Partnership Interests CommitmentsToLimitedPartnershipInterests	316000000	USD
CY2010Q4	hban	Funded Commitments To Limited Partnership Interests FundedCommitmentsToLimitedPartnershipInterests	260100000	USD
CY2011Q4	hban	Funded Commitments To Limited Partnership Interests FundedCommitmentsToLimitedPartnershipInterests	322500000	USD
CY2011	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	35500000	USD
CY2011	us-gaap	Loss Contingency Period Of Occurrence LossContingencyPeriodOfOccurrence	within two years
CY2011Q4	us-gaap	Deferred Revenue DeferredRevenue	1600000	USD
CY2010Q4	us-gaap	Deferred Revenue DeferredRevenue	2200000	USD
CY2011Q4	hban	Percentage Of Outstanding Standby Letters Of Credit Collateralized PercentageOfOutstandingStandbyLettersOfCreditCollateralized	0.8	pure
CY2011	us-gaap	Debt Instrument Maturity Date Description DebtInstrumentMaturityDateDescription	no longer than 90 days
CY2011Q4	hban	Commitments To Sell Residential Real Estate Loans CommitmentsToSellResidentialRealEstateLoans	629000000	USD
CY2010Q4	hban	Commitments To Sell Residential Real Estate Loans CommitmentsToSellResidentialRealEstateLoans	998700000	USD
CY2010Q4	hban	Maturity Period Of Forward Contracts Relating Mortgage Banking Business MaturityPeriodOfForwardContractsRelatingMortgageBankingBusiness	less than one year
CY2011Q4	us-gaap	Loss Contingency Range Of Possible Loss Minimum LossContingencyRangeOfPossibleLossMinimum	0	USD
CY2011Q4	us-gaap	Loss Contingency Range Of Possible Loss Maximum LossContingencyRangeOfPossibleLossMaximum	140000000	USD
CY2011Q4	hban	Recovery From Bank As Form Of Unjust Enrichment RecoveryFromBankAsFormOfUnjustEnrichment	1900000	USD
CY2011Q4	hban	Direct Damage Claimed By Plantiffs DirectDamageClaimedByPlantiffs	32000000	USD
CY2011Q4	hban	Bankruptcy Trustee Alleging For Amount BankruptcyTrusteeAllegingForAmount	70000000	USD
CY2011Q4	hban	Preferential Transfer Alleged Bybankruptcy Trustee PreferentialTransferAllegedBybankruptcyTrustee	1200000	USD
CY2011Q4	hban	Fraudulent Transfers Alleged By Bankruptcy Trustee FraudulentTransfersAllegedByBankruptcyTrustee	73000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	44500000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	42600000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	40400000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	38600000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	35100000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	250200000	USD
CY2011Q4	hban	Operating Leases Sublease Rentals Current OperatingLeasesSubleaseRentalsCurrent	5400000	USD
CY2011Q4	hban	Operating Leases Sublease Rentals Two Years OperatingLeasesSubleaseRentalsTwoYears	4500000	USD
CY2011Q4	hban	Operating Leases Sublease Rentals Three Years OperatingLeasesSubleaseRentalsThreeYears	3400000	USD
CY2011Q4	hban	Operating Leases Sublease Rentals Four Years OperatingLeasesSubleaseRentalsFourYears	2000000	USD
CY2011Q4	hban	Operating Leases Sublease Rentals Five Years OperatingLeasesSubleaseRentalsFiveYears	600000	USD
CY2011Q4	hban	Operating Leases Sublease Rentals Thereafter OperatingLeasesSubleaseRentalsThereafter	400000	USD
CY2009	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	49800000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	53500000	USD
CY2010	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	50300000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	16300000	USD
CY2011Q4	hban	Additional Consequential Damages By Plantiffs AdditionalConsequentialDamagesByPlantiffs	excess of $20.0 million
CY2011	hban	Number Of Reporting Segments NumberOfReportingSegments	4
CY2011	hban	Number Of Regional And Commercial Banking Markets NumberOfRegionalAndCommercialBankingMarkets	11
CY2011Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.04	pure
CY2011Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08	pure
CY2011Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04	pure
CY2011Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.06	pure
CY2011Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1	pure
CY2011Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.05	pure
CY2011Q4	hban	Amount Bank Could Lend To Single Affiliate AmountBankCouldLendToSingleAffiliate	575300000	USD
CY2011Q4	hban	Average Cash Reserve Deposit Required And Made Federal Reserve Banks AverageCashReserveDepositRequiredAndMadeFederalReserveBanks	800000000	USD
CY2010Q4	hban	Average Cash Reserve Deposit Required And Made Federal Reserve Banks AverageCashReserveDepositRequiredAndMadeFederalReserveBanks	800000000	USD
CY2009	us-gaap	Payments Of Dividends PaymentsOfDividends	162288000	USD
CY2011	hban	Branches Under Retail And Business Banking Network BranchesUnderRetailAndBusinessBankingNetwork	600 branches
CY2011	hban	Number Of Atm NumberOfAtm	over 1,300
CY2011	hban	Companys Definition Of Business Banking By Revenue Size CompanysDefinitionOfBusinessBankingByRevenueSize	less than $15 million
CY2011	hban	Number Of Business Banking Business NumberOfBusinessBankingBusiness	130000000	USD
CY2009	hban	Noninterest Expense Excluding Goodwill NoninterestExpenseExcludingGoodwill	1426499000	USD
CY2010Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	546779000	USD
CY2010Q1	us-gaap	Interest Expense InterestExpense	152886000	USD
CY2010Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	393893000	USD
CY2011Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	485216000	USD
CY2011Q4	us-gaap	Interest Expense InterestExpense	70191000	USD
CY2011Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	415025000	USD
CY2011Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	45291000	USD
CY2011Q4	us-gaap	Noninterest Income NoninterestIncome	229352000	USD
CY2011Q4	us-gaap	Noninterest Expense NoninterestExpense	430274000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	168812000	USD
CY2011Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	41954000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	126858000	USD
CY2011Q4	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7703000	USD
CY2011Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	119155000	USD
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2011Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	490996000	USD
CY2011Q3	us-gaap	Interest Expense InterestExpense	84518000	USD
CY2011Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	406478000	USD
CY2011Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	43586000	USD
CY2011Q3	us-gaap	Noninterest Income NoninterestIncome	258559000	USD
CY2011Q3	us-gaap	Noninterest Expense NoninterestExpense	439118000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	182333000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38942000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	143391000	USD
CY2011Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7703000	USD
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	135688000	USD
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2011Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	492137000	USD
CY2011Q2	us-gaap	Interest Expense InterestExpense	88800000	USD
CY2011Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	403337000	USD
CY2011Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	35797000	USD
CY2011Q2	us-gaap	Noninterest Income NoninterestIncome	255767000	USD
CY2011Q2	us-gaap	Noninterest Expense NoninterestExpense	428409000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	194898000	USD
CY2011Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	48980000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	145918000	USD
CY2011Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7704000	USD
CY2011Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	138214000	USD
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2011Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	501877000	USD
CY2011Q1	us-gaap	Interest Expense InterestExpense	97547000	USD
CY2011Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	404330000	USD
CY2011Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	49385000	USD
CY2011Q1	us-gaap	Noninterest Income NoninterestIncome	236945000	USD
CY2011Q1	us-gaap	Noninterest Expense NoninterestExpense	430699000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	161191000	USD
CY2011Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34745000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	126446000	USD
CY2011Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7703000	USD
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	118743000	USD
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2010Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	528291000	USD
CY2010Q4	us-gaap	Interest Expense InterestExpense	112997000	USD
CY2010Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	415294000	USD
CY2010Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	86973000	USD
CY2010Q4	us-gaap	Noninterest Income NoninterestIncome	264220000	USD
CY2010Q4	us-gaap	Noninterest Expense NoninterestExpense	434593000	USD
CY2010Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	157948000	USD
CY2010Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35048000	USD
CY2010Q4	us-gaap	Net Income Loss NetIncomeLoss	122900000	USD
CY2010Q4	us-gaap	Dividends Preferred Stock DividendsPreferredStock	83754000	USD
CY2010Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	39146000	USD
CY2010Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.05
CY2010Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.05
CY2010Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	534669000	USD
CY2010Q3	us-gaap	Interest Expense InterestExpense	124707000	USD
CY2010Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	409962000	USD
CY2010Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	119160000	USD
CY2010Q3	us-gaap	Noninterest Income NoninterestIncome	267143000	USD
CY2010Q3	us-gaap	Noninterest Expense NoninterestExpense	427309000	USD
CY2010Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	130636000	USD
CY2010Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29690000	USD
CY2010Q3	us-gaap	Net Income Loss NetIncomeLoss	100946000	USD
CY2010Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	29495000	USD
CY2010Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	71451000	USD
CY2010Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.10
CY2010Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
CY2010Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	535653000	USD
CY2010Q2	us-gaap	Interest Expense InterestExpense	135997000	USD
CY2010Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	399656000	USD
CY2010Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	193406000	USD
CY2010Q2	us-gaap	Noninterest Income NoninterestIncome	269643000	USD
CY2010Q2	us-gaap	Noninterest Expense NoninterestExpense	413810000	USD
CY2010Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	62083000	USD
CY2010Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13319000	USD
CY2010Q2	us-gaap	Net Income Loss NetIncomeLoss	48764000	USD
CY2010Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	29426000	USD
CY2010Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	19338000	USD
CY2010Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2010Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2010Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	29357000	USD
CY2010Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	10380000	USD
CY2010Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.01
CY2010Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.01
CY2010Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	235008000	USD
CY2010Q1	us-gaap	Noninterest Income NoninterestIncome	240852000	USD
CY2010Q1	us-gaap	Noninterest Expense NoninterestExpense	398093000	USD
CY2010Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1644000	USD
CY2010Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-38093000	USD
CY2010Q1	us-gaap	Net Income Loss NetIncomeLoss	39737000	USD

Files In Submission

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$HBAN
HUNTINGTON BANCSHARES INC /MD/ Stock $hban

2011 Q4 Form 10-K Financial Statement

#000119312512067565 Filed on February 17, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HBAN HUNTINGTON BANCSHARES INC /MD/ Stock $hban

2011 Q4 Form 10-K Financial Statement

#000119312512067565 Filed on February 17, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HBAN
HUNTINGTON BANCSHARES INC /MD/ Stock $hban