Name:	tcf_AccruingTroubledDebtRestructurings
Namespace Prefix:	tcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the delinquency period of performing loans and leases.

No definition available.

Name:	tcf_DelinquencyPeriodOfPerformingLoansAndLeases
Namespace Prefix:	tcf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represent reserves for losses on loan TDRs outstanding as of the balance sheet date.

No definition available.

Name:	tcf_FinancingReceivableModificationsAllowanceForCreditLosses
Namespace Prefix:	tcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represent allowance for losses on loan TDRs as a percentage of loan TDRs outstanding as of the balance sheet date.

No definition available.

Name:	tcf_FinancingReceivableModificationsAllowanceForCreditLossesAsPercentageOfOutstandingBalances
Namespace Prefix:	tcf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Portion of non-accrual TDR balance, loans discharged in Chapter 7 bankruptcy that are not reaffirmed.

No definition available.

Name:	tcf_FinancingReceivableModificationsNonaccruingTroubledDebtRestructuringsChapter7BankruptcyNotReaffirmed
Namespace Prefix:	tcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the percentage of non-accrual TDR balance, loans discharged in Chapter 7 bankruptcy that are not reaffirmed.

No definition available.

Name:	tcf_FinancingReceivableModificationsNonaccruingTroubledDebtRestructuringsChapter7BankruptcyNotReaffirmedAsPercentageOfNonAccrualTroubledDebtRestructuringsBalance
Namespace Prefix:	tcf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the percentage of non-accrual TDR balance, loans discharged in Chapter 7 bankruptcy that are not reaffirmed that are current.

No definition available.

Name:	tcf_FinancingReceivableModificationsNonaccruingTroubledDebtRestructuringsChapter7BankruptcyNotReaffirmedAsPercentageOfNonAccrualTroubledDebtRestructuringsBalanceCurrent
Namespace Prefix:	tcf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents the percentage of accruing TDR loans over 60 day delinquencies.

No definition available.

Name:	tcf_FinancingReceivableModificationsPercentageOfAccruingTDRLoansOver60DayDelinquencies
Namespace Prefix:	tcf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Reflects the amount of additional interest income that would have been recorded if troubled debt restructurings were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

No definition available.

Name:	tcf_LoansAndLeasesReceivableImpairedInterestLostOnTroubledDebt
Namespace Prefix:	tcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Consumer real estate TDR loans generally remain on accruing status following modification if they are less than 90 days past due and payment in full under the modified terms of the loan is expected based on a current credit evaluation and historical payment performance.

No definition available.

Name:	tcf_MaximumPeriodPastDueforAccruingStatusforConsumerRealEstateTroubledDebtRestructuringLoans
Namespace Prefix:	tcf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The amount of the outstanding recorded investment related to non-accrual financing receivables that have been modified by troubled debt restructurings.

No definition available.

Name:	tcf_NonaccrualTroubledDebtRestructurings
Namespace Prefix:	tcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554

Name:	us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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

Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18794-111554

Name:	us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The gross interest income that would have been recorded in the period on troubled debt restructurings, if the loans had been current in accordance with their original terms and had been outstanding throughout the period or since origination, if held for part of the period.

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

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ContractualInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_FirstMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_SecondMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=tcf_LeasingandEquipmentFinancePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=tcf_InventoryFinancingPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_AutomobileLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: