Benefit Plans (Details Textuals) (USD $)
|
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract] | |||
Defined Benefit Plan, Amortization of Net Transition Asset (Obligation) | $ 0us-gaap_DefinedBenefitPlanAmortizationOfNetTransitionAssetObligation | ||
Defined Benefit Plan Future Amortization Of Prior Service Cost Credit | 2,000,000us-gaap_DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit | ||
Defined Benefit Plan Future Amortization Of Gain Loss | 8,400,000us-gaap_DefinedBenefitPlanFutureAmortizationOfGainLoss | ||
Defined Benefit Plan, Information about Plan Assets [Abstract] | |||
Fair value of plan assets, Percentage | 100.00%hban_FairValueOfPlanAssetsPercentage | 100.00%hban_FairValueOfPlanAssetsPercentage | |
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] | |||
Match - Base pay contributed to the plan | Matched participant contributions up to first 4% | ||
BasePayContributedToPlanProfitSharing | Profit-sharing contribution equal to first 1% | ||
Pension Benefits [Member] | |||
Benefit Plans (Textuals) [Abstract] | |||
Contribution to plan |
0us-gaap_DeferredCompensationArrangementWithIndividualEmployerContribution / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Defined Benefit Plan, Accumulated Benefit Obligation |
799,600,000us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
685,000,000us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
|
Defined Benefit Plan Expenses |
1,800,000hban_DefinedBenefitPlanExpenses / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
1,700,000hban_DefinedBenefitPlanExpenses / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
1,100,000hban_DefinedBenefitPlanExpenses / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
Estimated Net Periodic Pension Cost In Next Fiscal Year |
2,500,000hban_EstimatedNetPeriodicPensionCostInNextFiscalYear / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Asset | |||
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation |
146,600,000us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation |
146,600,000us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Defined Benefit Plan, Information about Plan Assets [Abstract] | |||
Average duration of plan assets investment in bonds, years | 12 years 5 months | ||
Estimated Life Of Benefit Obligations | 12 years 10 months | ||
Post Retirement Benefits [Member] | |||
Benefit Plans (Textuals) [Abstract] | |||
Employees retirement age for health care and life insurance benefits under unfunded defined benefit post-retirement plan |
55hban_EmployeesRetirementAgeForHealthCareAndLifeInsuranceBenefits / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
DeferredCompensationArrangementWithIndividualRequisiteServicePeriod | 10 years 0 months | ||
Life insurance coverage, maximum |
50,000hban_LifeInsuranceCoverageMaximum / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
PlanAmendementMeasurementReductionInLiability |
5,200,000hban_PlanAmendementMeasurementReductionInLiability / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Contributions Received For Retiree Medical Program |
2,600,000hban_ContributionsReceivedForRetireeMedicalProgram / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Defined Benefit Plans Estimated Future Employer Contributions In Next Fiscal Year |
1,400,000us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract] | |||
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year |
7.30%us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate |
4.50%us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate | 2028 | ||
Defined Benefit Plan, Description of Direction and Pattern of Change for Assumed Health Care Cost Trend Rate | These rates are assumed to decrease gradually | ||
Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract] | |||
Effect of One Percentage Point Increase on Service and Interest Cost Components |
3,500us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Effect of One Percentage Point Decrease on Service and Interest Cost Components |
(2,900)us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1 / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation |
7,600us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation |
(7,100)us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1 / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember |
||
Supplemental Executive Retirement Plan [Member] | |||
Benefit Plans (Textuals) [Abstract] | |||
Defined Benefit Plan Expenses |
1,000,000hban_DefinedBenefitPlanExpenses / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = hban_SupplementalexecutiveretirementplanMember |
4,200,000hban_DefinedBenefitPlanExpenses / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = hban_SupplementalexecutiveretirementplanMember |
2,500,000hban_DefinedBenefitPlanExpenses / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = hban_SupplementalexecutiveretirementplanMember |
Pension and Other Postretirement Defined Benefit Plans, Liabilities |
$ 35,000,000us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = hban_SupplementalexecutiveretirementplanMember |
$ 29,200,000us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = hban_SupplementalexecutiveretirementplanMember |
|
Equity Securities [Member] | Pension Benefits [Member] | |||
Defined Benefit Plan, Information about Plan Assets [Abstract] | |||
Defined Benefit Plan, Actual Plan Asset Allocations |
49.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum |
20.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Defined Benefit Plan, Target Plan Assets Allocation Range Maximum |
50.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_EquitySecuritiesMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Covered Bonds [Member] | Pension Benefits [Member] | |||
Defined Benefit Plan, Information about Plan Assets [Abstract] | |||
Defined Benefit Plan, Actual Plan Asset Allocations |
49.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_BondsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum |
50.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_BondsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Defined Benefit Plan, Target Plan Assets Allocation Range Maximum |
80.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_BondsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
||
Cash and Cash Equivalents [Member] | Pension Benefits [Member] | |||
Defined Benefit Plan, Information about Plan Assets [Abstract] | |||
Defined Benefit Plan, Actual Plan Asset Allocations |
2.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_PensionPlansDefinedBenefitMember |
X | ||||||||||
- Definition
Average duration of plan assets investment in bonds. No definition available.
|
X | ||||||||||
- Definition
Base pay contributed to the plan. No definition available.
|
X | ||||||||||
- Definition
No authoritative reference available. No definition available.
|
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
Contributions received for retiree medical program No definition available.
|
X | ||||||||||
- Definition
Plan expenses included in benefit costs No definition available.
|
X | ||||||||||
- Definition
Employees retirement age for health care and life insurance benefits unfunded defined benefit post-retirement plan. No definition available.
|
X | ||||||||||
- Definition
Estimated life of benefit obligations No definition available.
|
X | ||||||||||
- Definition
Estimated net periodic pension cost in next fiscal year No definition available.
|
X | ||||||||||
- Definition
No authoritative reference available. No definition available.
|
X | ||||||||||
- Definition
Life insurance coverage, maximum. No definition available.
|
X | ||||||||||
- Definition
No authoritative reference available. No definition available.
|
X | ||||||||||
- Definition
The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement. No definition available.
|
X | ||||||||||
- Definition
Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount included in accumulated other comprehensive income (AOCI) related to transition obligation (asset) expected to be recognized as components of net periodic benefit cost (credit) for the fiscal year that follows the most recent annual statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
A general description of the direction and pattern of change in the assumed trend rate(s) starting after one year from the current statement of financial position date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. No definition available.
|
X | ||||||||||
- Definition
Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position. No definition available.
|
X | ||||||||||
- Definition
The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The ultimate trend rate for health care costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Year the ultimate health care cost trend rate is expected to be reached, in CCYY format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|