Name:	hth_InvestmentBankingPurchaseAndSaleOfFederalFunds
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the increase in loss contingency liabilities during the period due to new sales.

No definition available.

Name:	hth_LossContingencyAccrualCarryingValueAdditionsForNewSales
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the increase (decrease) in the period in loss contingency liabilities due to change in estimate.

No definition available.

Name:	hth_LossContingencyAccrualCarryingValueChangeInEstimate
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the increase in loss contingency liabilities due to claims made during the period.

No definition available.

Name:	hth_LossContingencyAccrualCarryingValueClaimsMade
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the decrease in loss contingency liabilities during the period due to claims resolved with no payment.

No definition available.

Name:	hth_LossContingencyAccrualCarryingValueClaimsResolvedWithNoPayment
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the decrease in loss contingency liabilities due to early payment of defaults during the period.

No definition available.

Name:	hth_LossContingencyAccrualCarryingValueEarlyPaymentDefaults
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the decrease in loss contingency liabilities due to repurchases made during the period.

No definition available.

Name:	hth_LossContingencyAccrualCarryingValueRepurchases
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the amount of loss contingency liability for incurred but not reported claims.

No definition available.

Name:	hth_LossContingencyAccrualForIncurredButNotReportedClaims
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the amount of loss contingency liability for specific claims.

No definition available.

Name:	hth_LossContingencyAccrualForSpecificClaims
Namespace Prefix:	hth_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the period from the date of agreement at which the agreements with employees may begin to renew subject to the consent of the parties under the agreement.

No definition available.

Name:	hth_OtherCommitmentPeriodSubsequentToCommencementOfAgreementAtWhichInitialRenewalMayOccur
Namespace Prefix:	hth_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the period at which the agreement may renew subject to the consent of the parties under the agreement.

No definition available.

Name:	hth_OtherCommitmentRenewalPeriodOfContract
Namespace Prefix:	hth_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the number of executive officers with whom retention agreement was entered into.

No definition available.

Name:	hth_OtherCommitmentRetentionAgreementNumberOfExecutiveOfficers
Namespace Prefix:	hth_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Amount of loss contingency liability.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_LossContingencyAccrualDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of cash outflow reducing loss contingency liability.

Name:	us-gaap_LossContingencyAccrualPayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

Name:	us-gaap_LossContingencyAccrualProvision
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	us-gaap_LossContingencyAccrualRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585

Name:	us-gaap_PaymentsForLegalSettlements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Name:	us-gaap_OtherCommitmentsAxis=hth_RetentionAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=hth_RepresentationAndWarrantyClaimsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_IndemnificationGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_LitigationCaseAxis=hth_SettlementAgreementBetweenPrimelendingDojAndHudMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: