10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended

September 30, 2015

or

[  ] Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Commission File No. 001-10253

TCF Financial Corporation

(Exact name of registrant as specified in its charter)

Delaware	41-1591444
(State or other jurisdiction of	(I.R.S. Employer Identification No.)
incorporation or organization)

200 Lake Street East, Mail Code EX0-03-A,

Wayzata, Minnesota 55391-1693

(Address and Zip Code of principal executive offices)

(952) 745-2760

(Registrant's telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes [X]                                                   No [  ]

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes [X]                                                   No [  ]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer [X]                                                                                   Accelerated filer                  [   ]

Non-accelerated filer   [   ] (Do not check if a smaller reporting company)         Smaller reporting company [   ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes [   ]                                                  No [X]

Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date.

	Outstanding at
Class	October 28, 2015
Common Stock, $.01 par value	169,574,268 shares

TCF FINANCIAL CORPORATION AND SUBSIDIARIES

INDEX

Part I. Financial Information	Pages
Item 1. Financial Statements
Consolidated Statements of Financial Condition at September 30, 2015 and December 31, 2014	1
Consolidated Statements of Income for the Three and Nine Months Ended September 30, 2015 and 2014	2
Consolidated Statements of Comprehensive Income for the Three and Nine Months Ended September 30, 2015 and 2014	3
Consolidated Statements of Equity for the Nine Months Ended September 30, 2015 and 2014	4
Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2015 and 2014	5
Notes to Consolidated Financial Statements	6
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	39
Item 3. Quantitative and Qualitative Disclosures About Market Risk	58
Item 4. Controls and Procedures	59
Part II. Other Information
Items 1 - 6	59
Signatures	61
Index to Exhibits	62

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

TCF FINANCIAL CORPORATION AND SUBSIDIARIES

Consolidated Statements of Financial Condition

(Dollars in thousands, except per-share data)	At September 30, 2015			At December 31, 2014
	(Unaudited)
Assets:
Cash and due from banks	$	786,064		$	1,115,250
Investments	76,543			85,492
Securities held to maturity	204,129			214,454
Securities available for sale	782,995			463,294
Loans and leases held for sale	116,155			132,266
Loans and leases:
Consumer real estate:
First mortgage lien	2,724,594			3,139,152
Junior lien	2,889,120			2,543,212
Total consumer real estate	5,613,714			5,682,364
Commercial	3,112,325			3,157,665
Leasing and equipment finance	3,873,581			3,745,322
Inventory finance	2,153,385			1,877,090
Auto finance	2,427,367			1,915,061
Other	20,674			24,144
Total loans and leases	17,201,046			16,401,646
Allowance for loan and lease losses	(153,962		)	(164,169		)
Net loans and leases	17,047,084			16,237,477
Premises and equipment, net	445,041			436,361
Goodwill	225,640			225,640
Other assets	442,285			484,377
Total assets	$	20,125,936		$	19,394,611
Liabilities and Equity:
Deposits:
Checking	$	5,378,024		$	5,195,243
Savings	4,774,766			5,212,320
Money market	2,293,390			1,993,130
Certificates of deposit	3,612,253			3,049,189
Total deposits	16,058,433			15,449,882
Short-term borrowings	36,509			4,425
Long-term borrowings	1,184,166			1,232,065
Total borrowings	1,220,675			1,236,490
Accrued expenses and other liabilities	573,681			572,875
Total liabilities	17,852,789			17,259,247
Equity:
Preferred stock, par value $0.01 per share, 30,000,000 shares authorized;
4,006,900 issued	263,240			263,240
Common stock, par value $0.01 per share, 280,000,000 shares authorized;
169,473,142 and 167,503,568 shares issued, respectively	1,695			1,675
Additional paid-in capital	846,243			817,130
Retained earnings, subject to certain restrictions	1,205,179			1,099,914
Accumulated other comprehensive income (loss)	(11,267		)	(10,910		)
Treasury stock at cost, 42,566 shares, and other	(50,443		)	(49,400		)
Total TCF Financial Corporation stockholders' equity	2,254,647			2,121,649
Non-controlling interest in subsidiaries	18,500			13,715
Total equity	2,273,147			2,135,364
Total liabilities and equity	$	20,125,936		$	19,394,611

See accompanying notes to consolidated financial statements.

1

TCF FINANCIAL CORPORATION AND SUBSIDIARIES

Consolidated Statements of Income

(Unaudited) 

	Three Months Ended   September 30,						Nine Months Ended   September 30,
(In thousands, except per-share data)	2015			2014			2015			2014
Interest income:
Loans and leases	$	207,250		$	205,604		$	620,390		$	614,929
Securities available for sale	4,161			2,973			10,784			8,941
Securities held to maturity	1,361			1,445			4,150			3,852
Investments and other	10,832			9,681			31,155			26,699
Total interest income	223,604			219,703			666,479			654,421
Interest expense:
Deposits	12,302			10,711			34,454			27,625
Borrowings	6,032			4,812			17,306			15,241
Total interest expense	18,334			15,523			51,760			42,866
Net interest income	205,270			204,180			614,719			611,555
Provision for credit losses	10,018			15,739			35,337			40,140
Net interest income after provision for credit losses	195,252			188,441			579,382			571,415
Non-interest income:
Fees and service charges	36,991			40,255			107,258			114,909
Card revenue	13,803			12,994			40,606			38,493
ATM revenue	5,739			5,863			16,401			16,976
Subtotal	56,533			59,112			164,265			170,378
Gains on sales of auto loans, net	10,423			14,863			27,444			30,603
Gains on sales of consumer real estate loans, net	7,143			8,762			27,860			28,619
Servicing fee income	8,049			5,880			22,607			15,079
Subtotal	25,615			29,505			77,911			74,301
Leasing and equipment finance	27,165			24,383			75,774			69,432
Other	3,070			3,170			8,657			8,341
Fees and other revenue	112,383			116,170			326,607			322,452
Gains (losses) on securities, net	(131		)	(94		)	(268		)	1,047
Total non-interest income	112,252			116,076			326,339			323,499
Non-interest expense:
Compensation and employee benefits	116,708			112,393			348,682			337,146
Occupancy and equipment	34,159			34,121			107,138			103,276
FDIC insurance	4,832			7,292			15,089			22,480
Operating lease depreciation	9,485			7,434			25,801			20,274
Advertising and marketing	5,793			5,656			17,466			17,797
Other	45,750			47,888			139,770			131,841
Subtotal	216,727			214,784			653,946			632,814
Foreclosed real estate and repossessed assets, net	5,680			5,315			18,253			17,126
Other credit costs, net	(123		)	(411		)	(39		)	79
Total non-interest expense	222,284			219,688			672,160			650,019
Income before income tax expense	85,220			84,829			233,561			244,895
Income tax expense	30,528			30,791			82,258			88,755
Income after income tax expense	54,692			54,038			151,303			156,140
Income attributable to non-controlling interest	2,117			1,721			6,672			5,941
Net income attributable to TCF Financial Corporation	52,575			52,317			144,631			150,199
Preferred stock dividends	4,847			4,847			14,541			14,541
Net income available to common stockholders	$	47,728		$	47,470		$	130,090		$	135,658
Net income per common share:
Basic	$	0.29		$	0.29		$	0.79		$	0.83
Diluted	$	0.29		$	0.29		$	0.78		$	0.83

See accompanying notes to consolidated financial statements.

2

TCF FINANCIAL CORPORATION AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2015			2014			2015			2014
Net income attributable to TCF Financial Corporation	$	52,575		$	52,317		$	144,631		$	150,199
Other comprehensive income (loss):
Securities available for sale:
Unrealized gains (losses) arising during the period	9,972			(862		)	2,971			19,652
Reclassification of net (gains) losses to net income	281			254			871			(375		)
Net investment hedges:
Unrealized gains (losses) arising during the period	2,858			1,849			5,772			1,677
Foreign currency translation adjustment:
Unrealized gains (losses) arising during the period	(3,049		)	(2,066		)	(6,318		)	(2,043		)
Recognized postretirement prior service cost:
Reclassification of net (gains) losses to net income	(12		)	(12		)	(35		)	(35		)
Income tax (expense) benefit	(4,947		)	(464		)	(3,618		)	(7,879		)
Total other comprehensive income (loss)	5,103			(1,301		)	(357		)	10,997
Comprehensive income	$	57,678		$	51,016		$	144,274		$	161,196

See accompanying notes to consolidated financial statements.

3

TCF FINANCIAL CORPORATION AND SUBSIDIARIES

Consolidated Statements of Equity

(Unaudited)

	TCF Financial Corporation
	Number of Shares Issued			Preferred Stock		Common Stock			Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock and Other			Total			Non- controlling Interests			Total Equity
(Dollars in thousands)	Preferred	Common
Balance, December 31, 2013	4,006,900	165,164,861		$	263,240	$	1,652		$	779,641		$	977,846		$	(27,213	)	$	(42,198	)	$	1,952,968		$	11,791		$	1,964,759
Net income attributable to TCF Financial Corporation	—	—		—		—			—			150,199			—			—			150,199			5,941			156,140
Other comprehensive income (loss)	—	—		—		—			—			—			10,997			—			10,997			—			10,997
Net investment by (distribution to) non-controlling interest	—	—		—		—			—			—			—			—			—			(2,887		)	(2,887		)
Dividends on preferred stock	—	—		—		—			—			(14,541		)	—			—			(14,541		)	—			(14,541		)
Dividends on common stock	—	—		—		—			—			(24,512		)	—			—			(24,512		)	—			(24,512		)
Grants of restricted stock	—	1,110,706		—		11			(11		)	—			—			—			—			—			—
Common shares purchased by TCF employee benefit plans	—	1,109,887		—		11			17,791			—			—			—			17,802			—			17,802
Cancellation of shares of restricted stock	—	(70,790	)	—		(1		)	(326		)	—			—			—			(327		)	—			(327		)
Cancellation of common shares for tax withholding	—	(200,943	)	—		(2		)	(3,260		)	—			—			—			(3,262		)	—			(3,262		)
Net amortization of stock compensation	—	—		—		—			7,141			—			—			—			7,141			—			7,141
Exercise of stock options	—	47,000		—		1			739			—			—			—			740			—			740
Stock compensation tax (expense) benefit	—	—		—		—			1,382			—			—			—			1,382			—			1,382
Change in shares held in trust for deferred compensation plans, at cost	—	—		—		—			6,681			—			—			(6,681		)	—			—			—
Balance, September 30, 2014	4,006,900	167,160,721		$	263,240	$	1,672		$	809,778		$	1,088,992		$	(16,216	)	$	(48,879	)	$	2,098,587		$	14,845		$	2,113,432
Balance, December 31, 2014	4,006,900	167,503,568		$	263,240	$	1,675		$	817,130		$	1,099,914		$	(10,910	)	$	(49,400	)	$	2,121,649		$	13,715		$	2,135,364
Net income attributable to TCF Financial Corporation	—	—		—		—			—			144,631			—			—			144,631			6,672			151,303
Other comprehensive income (loss)	—	—		—		—			—			—			(357		)	—			(357		)	—			(357		)
Net investment by (distribution to) non-controlling interest	—	—		—		—			—			—			—			—			—			(1,887		)	(1,887		)
Dividends on preferred stock	—	—		—		—			—			(14,541		)	—			—			(14,541		)	—			(14,541		)
Dividends on common stock	—	—		—		—			—			(24,825		)	—			—			(24,825		)	—			(24,825		)
Grants of restricted stock	—	753,054		—		8			(8		)	—			—			—			—			—			—
Common shares purchased by TCF employee benefit plans	—	1,219,012		—		12			19,261			—			—			—			19,273			—			19,273
Cancellation of shares of restricted stock	—	(133,822	)	—		(1		)	(540		)	—			—			—			(541		)	—			(541		)
Cancellation of common shares for tax withholding	—	(68,670	)	—		(1		)	(1,093		)	—			—			—			(1,094		)	—			(1,094		)
Net amortization of stock compensation	—	—		—		—			7,520			—			—			—			7,520			—			7,520
Exercise of stock options	—	200,000		—		2			2,568			—			—			—			2,570			—			2,570
Stock compensation tax (expense) benefit	—	—		—		—			362			—			—			—			362			—			362
Change in shares held in trust for deferred compensation plans, at cost	—	—		—		—			1,043			—			—			(1,043		)	—			—			—
Balance, September 30, 2015	4,006,900	169,473,142		$	263,240	$	1,695		$	846,243		$	1,205,179		$	(11,267	)	$	(50,443	)	$	2,254,647		$	18,500		$	2,273,147

See accompanying notes to consolidated financial statements.

4

TCF FINANCIAL CORPORATION AND SUBSIDIARIES

Consolidated Statements of Cash Flows

(Unaudited)

	Nine Months Ended September 30,
(In thousands)	2015			2014
Cash flows from operating activities:
Net income attributable to TCF Financial Corporation	$	144,631		$	150,199
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	35,337			40,140
Depreciation and amortization	111,284			95,428
Proceeds from sales of loans and leases held for sale	751,200			373,429
Gains on sales of assets, net	(62,256		)	(60,784		)
Net income attributable to non-controlling interest	6,672			5,941
Originations of loans held for sale, net of repayments	(704,018		)	(451,304		)
Net change in other assets and accrued expenses and other liabilities	72,747			66,434
Other, net	(22,915		)	(24,007		)
Net cash provided by (used in) operating activities	332,682			195,476
Cash flows from investing activities:
Loan originations and purchases, net of principal collected on loans and leases	(1,529,968		)	(1,485,383		)
Purchases of equipment for lease financing	(752,536		)	(654,671		)
Proceeds from sales of loans	1,297,979			1,469,077
Proceeds from sales of lease receivables	21,016			22,590
Proceeds from sales of securities	177			2,813
Purchases of securities	(377,432		)	(136,341		)
Proceeds from maturities of and principal collected on securities	70,485			42,377
Purchases of Federal Home Loan Bank stock	(107,000		)	(71,000		)
Redemption of Federal Home Loan Bank stock	116,004			80,928
Proceeds from sales of real estate owned	51,017			42,935
Purchases of premises and equipment	(38,455		)	(32,988		)
Other, net	24,346			21,248
Net cash provided by (used in) investing activities	(1,224,367		)	(698,415		)
Cash flows from financing activities:
Net change in deposits	599,238			737,299
Net change in short-term borrowings	32,298			(1,534		)
Proceeds from long-term borrowings	3,656,133			1,840,008
Payments on long-term borrowings	(3,706,122		)	(2,075,047		)
Redemption of subordinated debt	—			(50,000		)
Net investment by (distribution to) non-controlling interest	(1,887		)	(2,887		)
Dividends paid on preferred stock	(14,541		)	(14,541		)
Dividends paid on common stock	(24,825		)	(24,512		)
Stock compensation tax (expense) benefit	362			1,382
Common shares sold to TCF employee benefit plans	19,273			17,802
Exercise of stock options	2,570			740
Net cash provided by (used in) financing activities	562,499			428,710
Net change in cash and due from banks	(329,186		)	(74,229		)
Cash and due from banks at beginning of period	1,115,250			915,076
Cash and due from banks at end of period	$	786,064		$	840,847
Supplemental disclosures of cash flow information:
Cash paid (received) for:
Interest on deposits and borrowings	$	46,881		$	39,864
Income taxes, net	43,119			89,132
Transfer of loans to other assets	80,233			65,704
Transfer of securities available for sale to securities held to maturity	—			191,665

See accompanying notes to consolidated financial statements.

5

TCF FINANCIAL CORPORATION AND SUBSIDIARIES

Notes to Consolidated Financial Statements

(Unaudited)

Note 1. Basis of Presentation

TCF Financial Corporation, a Delaware corporation ("we," "us," "our," "TCF," or the "Company"), is a national bank holding company based in Wayzata, Minnesota. Unless otherwise indicated, references herein to "TCF" include its direct and indirect subsidiaries. Its principal subsidiary, TCF National Bank ("TCF Bank"), is headquartered in South Dakota. References herein to "TCF Financial" refer to TCF Financial Corporation on an unconsolidated basis.

The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all of the information and notes necessary for complete financial statements in conformity with generally accepted accounting principles in the United States ("GAAP"). The information in this Quarterly Report on Form 10-Q is written with the presumption that the users of the interim financial statements have read or have access to the Company's most recent Annual Report on Form 10-K, which contains the latest audited financial statements and notes thereto, together with Management's Discussion and Analysis of Financial Condition and Results of Operations at December 31, 2014, and for the year then ended. All significant intercompany accounts and transactions have been eliminated in consolidation. Certain reclassifications have been made to prior period financial statements to conform to the current period presentation. Accounting policies in effect at December 31, 2014 remain significantly unchanged and have been followed similarly as in previous periods.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the reporting period. These estimates are based on information available to management at the time the estimates are made. Actual results could differ from those estimates. In the opinion of management, the accompanying unaudited consolidated financial statements contain all significant adjustments, consisting of normal recurring items, considered necessary for fair presentation. The results of operations for interim periods are not necessarily indicative of the results to be expected for the entire year.

Note 2.  Cash and Due from Banks

At September 30, 2015 and December 31, 2014, TCF Bank was required by Federal Reserve regulations to maintain reserves of $93.3 million and $98.7 million, respectively, in cash on hand or at the Federal Reserve Bank.

TCF maintains cash balances that are restricted as to their use in accordance with certain contractual agreements primarily related to the sale and servicing of auto loans. Cash payments received on loans serviced for third parties are generally held in separate accounts until remitted. TCF also retains cash balances for collateral on certain borrowings, forward foreign exchange contracts and interest rate contracts. TCF maintained restricted cash totaling $69.7 million and $67.8 million at September 30, 2015 and December 31, 2014, respectively.

TCF had cash held in interest-bearing accounts of $521.2 million and $842.1 million at September 30, 2015 and December 31, 2014, respectively.

6

Note 3.  Securities Available for Sale and Securities Held to Maturity

Securities consisted of the following.

	At September 30, 2015									At December 31, 2014
(Dollars in thousands)	Amortized Cost			Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost			Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	615,798		$	3,318	$	886	$	618,230	$	461,575		$	2,405	$	741	$	463,239
Other	38			—		—		38		55			—		—		55
Obligations of states and political subdivisions	162,524			2,207		4		164,727		—			—		—		—
Total securities available for sale	$	778,360		$	5,525	$	890	$	782,995	$	461,630		$	2,405	$	741	$	463,294
Weighted-average yield	2.36		%							2.62		%
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	199,552		$	8,011	$	131	$	207,432	$	209,538		$	7,988	$	109	$	217,417
Other securities	4,577			—		—		4,577		4,916			—		—		4,916
Total securities held to maturity	$	204,129		$	8,011	$	131	$	212,009	$	214,454		$	7,988	$	109	$	222,333
Weighted-average yield	2.65		%							2.64		%

During the three and nine months ended September 30, 2015, TCF sold $0.2 million of securities available for sale and received cash proceeds of $0.2 million. Gross realized gains of $29 thousand and $1.2 million were recognized on sales of securities available for sale during the third quarter and first nine months of 2014, respectively. At September 30, 2015 and December 31, 2014, mortgage-backed securities with a carrying value of $42.4 million and $8.2 million, respectively, were pledged as collateral to secure certain deposits and borrowings. There were no impairment charges recognized on securities available for sale during the first nine months of 2015 and 2014. Unrealized losses on securities available for sale are due to changes in interest rates. TCF has the ability and intent to hold these investments until a recovery of fair value occurs.

There were no transfers from securities available for sale to securities held to maturity during the nine months ended September 30, 2015. During the nine months ended September 30, 2014, TCF transferred $191.7 million of available for sale mortgage-backed securities to held to maturity, reflecting TCF's intent and ability to hold these securities to maturity. At September 30, 2015 and December 31, 2014, the unrealized holding loss on the transferred securities retained in accumulated other comprehensive income (loss) totaled $15.1 million and $16.0 million, respectively. These amounts are amortized over the remaining lives of the transferred securities. Other held to maturity securities consist primarily of non-trading mortgage-backed securities and other bonds which qualify for investment credit under the Community Reinvestment Act. During the nine months ended September 30, 2015 and 2014, TCF recorded an impairment charge of $0.3 million and $0.1 million, respectively, on held to maturity securities, which had a carrying value of $4.6 million and $5.0 million, respectively.

7

The following tables show the gross unrealized losses and fair value of securities available for sale and securities held to maturity at September 30, 2015 and December 31, 2014, aggregated by investment category and the length of time the securities were in a continuous loss position.

	At September 30, 2015
	Less than 12 months				12 months or more				Total
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	230,174	$	886	$	—	$	—	$	230,174	$	886
Obligations of states and political subdivisions	841		4		—		—		841		4
Total securities available for sale	$	231,015	$	890	$	—	$	—	$	231,015	$	890
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	4,055	$	38	$	1,855	$	93	$	5,910	$	131
Total securities held to maturity	$	4,055	$	38	$	1,855	$	93	$	5,910	$	131

	At December 31, 2014
	Less than 12 months				12 months or more				Total
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	—	$	198,550	$	741	$	198,550	$	741
Total securities available for sale	$	—	$	—	$	198,550	$	741	$	198,550	$	741
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	2,602	$	109	$	—	$	—	$	2,602	$	109
Total securities held to maturity	$	2,602	$	109	$	—	$	—	$	2,602	$	109

8

The amortized cost, fair value and yield of securities available for sale and securities held to maturity by contractual maturity at September 30, 2015 and December 31, 2014 are shown below. The remaining contractual principal maturities do not consider possible prepayments. Remaining expected maturities will differ from contractual maturities because borrowers may have the right to prepay. Yields on securities have not been adjusted for tax exempt status.

	At September 30, 2015						At December 31, 2014
(Dollars in thousands)	Amortized Cost		Fair Value		Yield		Amortized Cost		Fair Value		Yield
Securities available for sale:
Due in one year or less	$	2	$	2	9.00	%	$	4	$	4	11.63	%
Due in 1-5 years	43		43		3.24		76		76		4.53
Due in 5-10 years	220,673		223,617		2.05		86,806		87,594		1.93
Due after 10 years	557,642		559,333		2.48		374,744		375,620		2.78
Total securities available for sale	$	778,360	$	782,995	2.36		$	461,630	$	463,294	2.62
Securities held to maturity:
Due in one year or less	$	100	$	100	2.00	%	$	500	$	500	2.00	%
Due in 1-5 years	1,700		1,700		2.65		2,500		2,500		3.08
Due in 5-10 years	1,600		1,600		3.25		400		400		3.00
Due after 10 years	200,729		208,609		2.64		211,054		218,933		2.64
Total securities held to maturity	$	204,129	$	212,009	2.65		$	214,454	$	222,333	2.64

9

Note 4.  Loans and Leases

Loans and leases consisted of the following.

(Dollars in thousands)	At September 30, 2015		At December 31, 2014		Percent Change
Consumer real estate:
First mortgage lien	$	2,724,594	$	3,139,152	(13.2	)%
Junior lien	2,889,120		2,543,212		13.6
Total consumer real estate	5,613,714		5,682,364		(1.2	)
Commercial:
Commercial real estate:
Permanent	2,233,722		2,382,144		(6.2	)
Construction and development	328,106		242,111		35.5
Total commercial real estate	2,561,828		2,624,255		(2.4	)
Commercial business	550,497		533,410		3.2
Total commercial	3,112,325		3,157,665		(1.4	)
Leasing and equipment finance	3,873,581		3,745,322		3.4
Inventory finance	2,153,385		1,877,090		14.7
Auto finance	2,427,367		1,915,061		26.8
Other	20,674		24,144		(14.4	)
Total loans and leases(1)	$	17,201,046	$	16,401,646	4.9

(1) Loans and leases are reported at historical cost including net direct fees and costs associated with originating and acquiring loans and leases, lease residuals, unearned income and unamortized purchase premiums and discounts. The aggregate amount of these loan and lease adjustments was $55.1 million and $43.4 million at September 30, 2015 and December 31, 2014, respectively.

The consumer real estate junior lien portfolio was comprised of $2.5 billion of home equity lines of credit ("HELOCs") and $363.0 million of amortizing junior lien mortgage loans at September 30, 2015, compared with $2.1 billion and $424.4 million at December 31, 2014, respectively. At September 30, 2015 and December 31, 2014, $1.8 billion and $1.3 billion, respectively, of the consumer real estate junior lien HELOCs had a 10-year interest-only draw period and a 20-year amortization repayment period and all were within the 10-year interest-only draw period and will not convert to amortizing loans until 2021 or later. At September 30, 2015 and December 31, 2014, $697.9 million and $816.0 million, respectively, of the consumer real estate junior lien HELOCs were interest-only revolving draw loans with no defined amortization period and original draw periods of 5 to 40 years. As of September 30, 2015, 18.3% of these loans mature prior to 2021.

The following table summarizes the carrying value of consumer real estate loans and consumer auto loans sold with servicing retained, the cash received, retained interest-only strips and the recognized net gains for the nine months ended September 30, 2015 and 2014. No servicing assets or liabilities related to consumer real estate or consumer auto loans were recorded within TCF's Consolidated Statements of Financial Condition, as the contractual servicing fees are adequate to compensate TCF for its servicing responsibilities based on the amount demanded by the marketplace.

	For the Nine Months Ended September 30,
(In thousands)	2015						2014
	Consumer Real Estate Loans			Consumer Auto Loans			Consumer Real Estate Loans			Consumer Auto Loans
Sales proceeds, net(1)	$	898,387		$	1,113,036		$	827,831		$	989,811
Recorded investment in loans sold, including accrued interest	(878,468		)	(1,084,348		)	(808,627		)	(970,444		)
Interest-only strips, initial value	6,948			—			9,135			12,137
Net gains(2)	$	26,867		$	28,688		$	28,339		$	31,504

(1) Includes transaction fees and other sales related costs.

(2) Excludes subsequent adjustments and valuation adjustments while held for sale.

10

TCF has two consumer real estate loan sale programs; one that sells nationally originated junior lien loans and the other that originates first mortgage lien loans in our primary banking markets and sells the loans through a correspondent relationship. Included in the consumer real estate recognized net gains was $4.7 million on the recorded investment of first mortgage lien loans sold related to the correspondent lending program, including accrued interest, of $212.9 million during the first nine months of 2015. There were no loans sold related to the correspondent lending program during the first nine months of 2014.

Included in the consumer auto loans sold in the table above are amounts related to the execution of securitizations.During the nine months ended September 30, 2015 and 2014, TCF transferred the recorded investment in consumer auto loans, including accrued interest, totaling $880.8 million and $258.6 million, respectively, with servicing retained, to trusts in securitization transactions, received net sales proceeds of $902.8 million and $266.0 million, respectively, and recognized gains of $22.0 million and $7.4 million, respectively, which qualified for sale accounting. These trusts are considered variable interest entities due to their limited capitalization and special purpose nature, however TCF does not have a variable interest in the trusts. Therefore, TCF is not the primary beneficiary of the trusts and they are not consolidated.

Total interest-only strips and the contractual liabilities related to loan sales are shown below.

(In thousands)	At September 30, 2015		At December 31, 2014
Interest-only strips attributable to:
Consumer real estate loan sales	$	21,138	$	21,198
Consumer auto loan sales	29,561		48,591
Contractual liabilities attributable to:
Consumer real estate loan sales	$	723	$	563
Consumer auto loan sales	365		699

TCF had no impairment charges on consumer real estate loan interest-only strips for the nine months ended September 30, 2015 and 2014. TCF recorded impairment charges on the consumer auto loan interest-only strips of $0.9 million and $1.6 million for the nine months ended September 30, 2015 and 2014, respectively, primarily as a result of higher prepayments than originally assumed.

TCF's agreements to sell auto and consumer real estate loans typically contain certain representations and warranties regarding the loans sold. These representations and warranties generally relate to, among other things, the ownership of the loan, the validity, priority and perfection of the lien securing the loan, accuracy of information supplied to the buyer, the loan's compliance with the criteria set forth in the agreement, payment delinquency and compliance with applicable laws and regulations. TCF may be required to repurchase loans in the event of an unremedied breach of these representations or warranties. During the nine months ended September 30, 2015 and 2014, losses related to repurchases pursuant to such representations and warranties were immaterial. The majority of such repurchases were of consumer auto loans where TCF typically has contractual agreements with the automobile dealerships that originated the loans requiring the dealers to repurchase such contracts from TCF.

11

Note 5.  Allowance for Loan and Lease Losses and Credit Quality Information

The following tables provide the allowance for loan and lease losses and other related information. TCF's key credit quality indicator is the receivable's payment performance status, defined as accruing or non-accruing.

(In thousands)	Consumer Real Estate			Commercial			Leasing and Equipment Finance			Inventory Finance			Auto Finance			Other			Total
At or For the Three Months Ended September 30, 2015:
Balance, beginning of period	$	74,687		$	30,205		$	17,669		$	10,879		$	22,061		$	614		$	156,115
Charge-offs	(6,310		)	(487		)	(1,583		)	(463		)	(4,594		)	(1,901		)	(15,338		)
Recoveries	1,832			514			702			319			915			1,115			5,397
Net (charge-offs) recoveries	(4,478		)	27			(881		)	(144		)	(3,679		)	(786		)	(9,941		)
Provision for credit losses	780			(226		)	1,389			546			6,750			779			10,018
Other	(660		)	—			—			(160		)	(1,410		)	—			(2,230		)
Balance, end of period	$	70,329		$	30,006		$	18,177		$	11,121		$	23,722		$	607		$	153,962
At or For the Three Months Ended September 30, 2014:
Balance, beginning of period	$	161,349		$	31,361		$	19,184		$	9,539		$	13,865		$	783		$	236,081
Charge-offs	(24,072		)	(262		)	(2,350		)	(548		)	(2,958		)	(2,448		)	(32,638		)
Recoveries	1,912			406			1,157			284			494			1,448			5,701
Net (charge-offs) recoveries	(22,160		)	144			(1,193		)	(264		)	(2,464		)	(1,000		)	(26,937		)
Provision for credit losses	6,636			1,785			(391		)	411			6,302			996			15,739
Other	(700		)	—			—			(130		)	(1,395		)	—			(2,225		)
Balance, end of period	$	145,125		$	33,290		$	17,600		$	9,556		$	16,308		$	779		$	222,658
(In thousands)	Consumer Real Estate			Commercial			Leasing and Equipment Finance			Inventory Finance			Auto Finance			Other			Total
At or For the Nine Months Ended September 30, 2015:
Balance, beginning of period	$	85,361		$	31,367		$	18,446		$	10,020		$	18,230		$	745		$	164,169
Charge-offs	(27,074		)	(3,944		)	(5,447		)	(1,812		)	(12,943		)	(5,226		)	(56,446		)
Recoveries	5,626			2,878			2,205			626			2,253			3,902			17,490
Net (charge-offs) recoveries	(21,448		)	(1,066		)	(3,242		)	(1,186		)	(10,690		)	(1,324		)	(38,956		)
Provision for credit losses	8,660			(295		)	2,973			2,627			20,186			1,186			35,337
Other	(2,244		)	—			—			(340		)	(4,004		)	—			(6,588		)
Balance, end of period	$	70,329		$	30,006		$	18,177		$	11,121		$	23,722		$	607		$	153,962
At or For the Nine Months Ended September 30, 2014:
Balance, beginning of period	$	176,030		$	37,467		$	18,733		$	8,592		$	10,623		$	785		$	252,230
Charge-offs	(51,639		)	(5,628		)	(5,760		)	(898		)	(7,682		)	(6,343		)	(77,950		)
Recoveries	5,319			785			2,845			661			1,109			4,523			15,242
Net (charge-offs) recoveries	(46,320		)	(4,843		)	(2,915		)	(237		)	(6,573		)	(1,820		)	(62,708		)
Provision for credit losses	17,821			737			1,782			1,336			16,650			1,814			40,140
Other	(2,406		)	(71		)	—			(135		)	(4,392		)	—			(7,004		)
Balance, end of period	$	145,125		$	33,290		$	17,600		$	9,556		$	16,308		$	779		$	222,658

12

The following tables provide information regarding the allowance for loan and lease losses and balances by type of allowance methodology.

	At September 30, 2015
(In thousands)	Consumer Real Estate		Commercial		Leasing and Equipment Finance		Inventory  Finance		Auto  Finance		Other		Total
Allowance for loan and lease losses:
Collectively evaluated for impairment	$	45,884	$	29,497	$	16,363	$	10,910	$	21,410	$	604	$	124,668
Individually evaluated for impairment	24,445		509		1,814		211		2,312		3		29,294
Total	$	70,329	$	30,006	$	18,177	$	11,121	$	23,722	$	607	$	153,962
Loans and leases outstanding:
Collectively evaluated for impairment	$	5,393,919	$	3,035,004	$	3,861,455	$	2,151,551	$	2,419,230	$	20,656	$	16,881,815
Individually evaluated for impairment	219,795		77,321		12,076		1,834		8,098		18		319,142
Loans acquired with deteriorated credit quality	—		—		50		—		39		—		89
Total	$	5,613,714	$	3,112,325	$	3,873,581	$	2,153,385	$	2,427,367	$	20,674	$	17,201,046

	At December 31, 2014
(In thousands)	Consumer Real Estate		Commercial		Leasing and Equipment  Finance		Inventory  Finance		Auto  Finance		Other		Total
Allowance for loan and lease losses:
Collectively evaluated for impairment	$	57,167	$	27,594	$	16,310	$	9,627	$	17,046	$	741	$	128,485
Individually evaluated for impairment	28,194		3,773		2,136		393		1,184		4		35,684
Total	$	85,361	$	31,367	$	18,446	$	10,020	$	18,230	$	745	$	164,169
Loans and leases outstanding:
Collectively evaluated for impairment	$	5,462,005	$	3,038,378	$	3,731,420	$	1,874,481	$	1,911,267	$	24,055	$	16,041,606
Individually evaluated for impairment	220,359		119,287		13,763		2,609		3,676		89		359,783
Loans acquired with deteriorated credit quality	—		—		139		—		118		—		257
Total	$	5,682,364	$	3,157,665	$	3,745,322	$	1,877,090	$	1,915,061	$	24,144	$	16,401,646

13

Accruing and Non-accrual Loans and Leases  The following tables set forth information regarding TCF's accruing and non-accrual loans and leases. Non-accrual loans and leases are those which management believes have a higher risk of loss. Delinquent balances are determined based on the contractual terms of the loan or lease.

	At September 30, 2015
(In thousands)	Current-59 Days Delinquent and Accruing		60-89 Days  Delinquent  and Accruing		90 Days or More Delinquent and Accruing		Total  Accruing		Non-accrual		Total
Consumer real estate:
First mortgage lien	$	2,584,735	$	8,612	$	904	$	2,594,251	$	130,343	$	2,724,594
Junior lien	2,845,205		2,316		—		2,847,521		41,599		2,889,120
Total consumer real estate	5,429,940		10,928		904		5,441,772		171,942		5,613,714
Commercial:
Commercial real estate	2,543,476		7,467		—		2,550,943		10,885		2,561,828
Commercial business	546,822		1		—		546,823		3,674		550,497
Total commercial	3,090,298		7,468		—		3,097,766		14,559		3,112,325
Leasing and equipment finance	3,855,752		6,988		288		3,863,028		10,197		3,873,225
Inventory finance	2,151,479		117		78		2,151,674		1,711		2,153,385
Auto finance	2,416,861		1,866		903		2,419,630		7,698		2,427,328
Other	20,636		25		10		20,671		3		20,674
Subtotal	16,964,966		27,392		2,183		16,994,541		206,110		17,200,651
Portfolios acquired with deteriorated credit quality	391		—		4		395		—		395
Total	$	16,965,357	$	27,392	$	2,187	$	16,994,936	$	206,110	$	17,201,046

	At December 31, 2014
(In thousands)	Current-59 Days Delinquent and Accruing		60-89 Days  Delinquent  and Accruing		90 Days or More Delinquent and Accruing		Total  Accruing		Non-accrual		Total
Consumer real estate:
First mortgage lien	$	2,987,992	$	13,176	$	194	$	3,001,362	$	137,790	$	3,139,152
Junior lien	2,505,640		2,091		—		2,507,731		35,481		2,543,212
Total consumer real estate	5,493,632		15,267		194		5,509,093		173,271		5,682,364
Commercial:
Commercial real estate	2,599,701		—		—		2,599,701		24,554		2,624,255
Commercial business	532,929		—		—		532,929		481		533,410
Total commercial	3,132,630		—		—		3,132,630		25,035		3,157,665
Leasing and equipment finance	3,728,115		2,242		307		3,730,664		12,670		3,743,334
Inventory finance	1,874,933		49		26		1,875,008		2,082		1,877,090
Auto finance	1,907,005		2,785		1,478		1,911,268		3,676		1,914,944
Other	24,144		—		—		24,144		—		24,144
Subtotal	16,160,459		20,343		2,005		16,182,807		216,734		16,399,541
Portfolios acquired with deteriorated credit quality	2,017		83		5		2,105		—		2,105
Total	$	16,162,476	$	20,426	$	2,010	$	16,184,912	$	216,734	$	16,401,646

14

The following table provides interest income recognized on loans and leases in non-accrual status and contractual interest that would have been recorded had the loans and leases performed in accordance with their original contractual terms.

	Three Months Ended   September 30,				Nine Months Ended   September 30,
(In thousands)	2015		2014		2015		2014
Contractual interest due on non-accrual loans and leases	$	5,428	$	6,720	$	15,992	$	20,259
Interest income recognized on non-accrual loans and leases	1,021		2,531		3,319		6,411
Unrecognized interest income	$	4,407	$	4,189	$	12,673	$	13,848

The following table provides information regarding consumer real estate loans to customers currently involved in ongoing Chapter 7 or Chapter 13 bankruptcy proceedings which have not yet been discharged or completed. 

(In thousands)	At September 30, 2015		At December 31, 2014
Consumer real estate loans to customers in bankruptcy:
0-59 days delinquent and accruing	$	28,029	$	47,731
60+ days delinquent and accruing	—		247
Non-accrual	19,243		12,284
Total consumer real estate loans to customers in bankruptcy	$	47,272	$	60,262

Loan Modifications for Borrowers with Financial Difficulties  Included within loans and leases in the previous tables are certain loans that have been modified in order to maximize collection of loan balances. If, for economic or legal reasons related to the customer's financial difficulties, TCF grants a concession, the modified loan is classified as a troubled debt restructuring ("TDR") loan. TDR loans consist primarily of consumer real estate and commercial loans.

Total TDR loans at September 30, 2015 and December 31, 2014 were $251.4 million and $298.5 million, respectively, of which $150.2 million and $193.8 million were accruing. TCF held consumer real estate TDR loans of $190.7 million and $199.6 million at September 30, 2015 and December 31, 2014, respectively, of which $107.6 million and $111.9 million were accruing. TCF also held $50.5 million and $91.6 million of commercial TDR loans at September 30, 2015 and December 31, 2014, respectively, of which $40.5 million and $80.4 million were accruing. TDR loans for the remaining classes of finance receivables were not material at September 30, 2015 or December 31, 2014.

Unfunded commitments to commercial and consumer real estate loans classified as TDRs were $1.0 million and $3.9 million at September 30, 2015 and December 31, 2014, respectively. At September 30, 2015 and December 31, 2014, no additional funds were committed to leasing and equipment finance, inventory finance or auto finance loans classified as TDRs.

When a loan is modified as a TDR, principal balances are generally not forgiven. Loan modifications to troubled borrowers are not reported as TDR loans in the calendar year after modification if the loans were modified at an interest rate equal to the yields of new loan originations with comparable risk and the loans are performing based on the terms of the restructured agreements. All loans classified as TDR loans are considered to be impaired. During the nine months ended September 30, 2015 and 2014, $9.0 million and $11.1 million, respectively, of commercial loans were removed from TDR status as they were restructured at market terms and are performing.

The financial effects of TDR loans represent the difference between interest income recognized on accruing TDR loans and the contractual interest that would have been recorded under the original contractual terms, or foregone interest income. For the three months ended September 30, 2015, foregone interest income for consumer real estate first mortgage lien accruing TDR loans and consumer real estate junior lien accruing TDR loans was $0.5 million and $0.2 million, respectively. The average yield for the same period on consumer real estate accruing TDR loans was 4.1%, which compares to the original contractual average rate of 6.8%. For the three months ended September 30, 2014, foregone interest income for consumer real estate first mortgage lien accruing TDR loans and consumer real estate junior lien accruing TDR loans was $4.3 million and $0.3 million, respectively. The average yield for the same period on consumer real estate accruing TDR loans was 3.3%, which compares to the original contractual average rate of 6.9%. The foregone interest income for the remaining classes of finance receivables was not material for the three months ended September 30, 2015 and 2014.

15

For the nine months ended September 30, 2015, foregone interest income for consumer real estate first mortgage lien accruing TDR loans and consumer real estate junior lien accruing TDR loans was $1.6 million and $0.6 million, respectively. The average yield for the same period on consumer real estate accruing TDR loans was 4.0%, which compares to the original contractual average rate of 6.7%. For the nine months ended September 30, 2014, foregone interest income for consumer real estate first mortgage lien accruing TDR loans and consumer real estate junior lien accruing TDR loans was $12.9 million and $0.9 million, respectively. The average yield for the same period on consumer real estate accruing TDR loans was 3.3%, which compares to the original contractual average rate of 6.8%. The foregone interest income for the remaining classes of finance receivables was not material for the nine months ended September 30, 2015 and 2014.

The table below summarizes TDR loans that defaulted during the three and nine months ended September 30, 2015 and 2014, which were modified during the respective reporting period or within one year of the beginning of the respective reporting period. TCF considers a loan to have defaulted when it becomes 90 or more days delinquent under the modified terms, has been transferred to non-accrual status subsequent to the modification or has been transferred to other real estate owned or repossessed and returned assets.

	Three Months Ended September 30,						Nine Months Ended September 30,
(Dollars in thousands)	2015			2014			2015			2014
Loan balance:(1)
Consumer real estate:
First mortgage lien	$	158		$	703		$	1,456		$	3,068
Junior lien	248			203			799			1,338
Total consumer real estate	406			906			2,255			4,406
Commercial:
Commercial real estate	—			—			—			3,814
Commercial business	—			127			—			127
Total commercial	—			127			—			3,941
Auto finance	282			113			676			237
Defaulted TDR loans modified during the applicable period	$	688		$	1,146		$	2,931		$	8,584
Total TDR loans modified in the applicable period	$	52,622		$	115,533		$	82,135		$	174,433
Defaulted modified TDR loans as a percent of total TDR loans modified in the applicable period	1.3		%	1.0		%	3.6		%	4.9		%

(1) The loan balances presented are not materially different than the pre-modification loan balances as TCF's loan modifications generally do not forgive principal amounts.

Consumer real estate TDR loans are evaluated separately in TCF's allowance methodology. Impairment is generally based upon the present value of the expected future cash flows or the fair value of the collateral less selling expenses for collateral dependent loans. The allowance on accruing consumer real estate TDR loans was $19.1 million, or 17.8% of the outstanding balance, at September 30, 2015, and $20.4 million, or 18.2% of the outstanding balance, at December 31, 2014. In determining impairment for consumer real estate accruing TDR loans, TCF utilized assumed remaining re-default rates ranging from 5% to 20% in 2015 and 4% to 22% in 2014, depending on modification type and actual experience. At September 30, 2015, 1.6% of accruing consumer real estate TDR loans were more than 60 days delinquent, compared with 2.4% at December 31, 2014.

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. Of the non-accrual TDR balance at September 30, 2015, $53.3 million, or 64.1%, were loans discharged in Chapter 7 bankruptcy that were not reaffirmed by the borrower, of which 76.4% were current. Of the non-accrual TDR balance at December 31, 2014, $50.0 million, or 57.0%, were loans discharged in Chapter 7 bankruptcy that were not reaffirmed, of which 68.4% were current. All eligible loans are re-aged to current delinquency status upon modification.

Commercial TDR loans are individually evaluated for impairment based upon the present value of the expected future cash flows, or for collateral dependent loans, at the fair value of collateral less selling expense. The allowance on accruing commercial TDR loans was $0.1 million, or 0.2% of the outstanding balance, at September 30, 2015, and $1.4 million, or 1.7% of the outstanding balance, at December 31, 2014. No accruing commercial TDR loans were 60 days or more delinquent at September 30, 2015 and December 31, 2014.

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Impaired Loans  TCF considers impaired loans to include non-accrual commercial loans, non-accrual equipment finance loans and non-accrual inventory finance loans, as well as all TDR loans. Non-accrual impaired loans, including non-accrual TDR loans, are included in non-accrual loans and leases within the previous tables. Accruing TDR loans have been disclosed by delinquency status within the previous tables of accruing and non-accrual loans and leases. In the following tables, the loan balance of impaired loans represents the amount recorded within loans and leases on the Consolidated Statements of Financial Condition, whereas the unpaid contractual balance represents the balances legally owed by the borrowers.

The following table summarizes impaired loans.

	At September 30, 2015						At December 31, 2014
(In thousands)	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded
Impaired loans with an allowance recorded:
Consumer real estate:
First mortgage lien	$	148,772	$	125,063	$	17,886	$	114,526	$	101,668	$	18,140
Junior lien	71,218		59,370		6,493		65,413		55,405		9,427
Total consumer real estate	219,990		184,433		24,379		179,939		157,073		27,567
Commercial:
Commercial real estate	17,881		17,874		506		58,157		54,412		3,772
Commercial business	16		16		3		18		18		1
Total commercial	17,897		17,890		509		58,175		54,430		3,773
Leasing and equipment finance	5,990		5,990		751		8,257		8,257		1,457
Inventory finance	1,293		1,299		211		1,754		1,758		393
Auto finance	6,426		6,185		2,235		3,074		2,928		1,184
Other	19		18		3		92		89		4
Total impaired loans with an allowance recorded	251,615		215,815		28,088		251,291		224,535		34,378
Impaired loans without an allowance recorded:
Consumer real estate:
First mortgage lien	9,802		5,698		—		53,606		35,147		—
Junior lien	26,586		551		—		33,796		7,398		—
Total consumer real estate	36,388		6,249		—		87,402		42,545		—
Commercial:
Commercial real estate	41,452		33,475		—		57,809		50,500		—
Commercial business	3,746		3,673		—		482		480		—
Total commercial	45,198		37,148		—		58,291		50,980		—
Inventory finance	533		535		—		848		851		—
Auto finance	1,929		1,070		—		1,484		748		—
Total impaired loans without an allowance recorded	84,048		45,002		—		148,025		95,124		—
Total impaired loans	$	335,663	$	260,817	$	28,088	$	399,316	$	319,659	$	34,378

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The average loan balance of impaired loans and interest income recognized on impaired loans during the three and nine months ended September 30, 2015 and 2014 are included within the table below.

	Three Months Ended								Nine Months Ended
	September 30, 2015				September 30, 2014				September 30, 2015				September 30, 2014
(In thousands)	Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized
Impaired loans with an allowance recorded:
Consumer real estate:
First mortgage lien	$	126,426	$	1,513	$	491,424	$	3,537	$	113,365	$	3,971	$	494,448	$	11,169
Junior lien	60,298		906		70,131		825		57,387		2,446		69,990		2,618
Total consumer real estate	186,724		2,419		561,555		4,362		170,752		6,417		564,438		13,787
Commercial:
Commercial real estate	19,183		174		60,981		589		36,143		777		67,587		1,826
Commercial business	18		—		1,123		—		17		—		2,491		—
Total commercial	19,201		174		62,104		589		36,160		777		70,078		1,826
Leasing and equipment finance	6,084		8		7,913		2		7,123		16		7,902		54
Inventory finance	1,869		17		2,114		6		1,529		66		4,846		77
Auto finance	5,309		8		1,262		—		4,557		8		999		—
Other	17		1		89		1		53		2		93		4
Total impaired loans with an allowance recorded	219,204		2,627		635,037		4,960		220,174		7,286		648,356		15,748
Impaired loans without an allowance recorded:
Consumer real estate:
First mortgage lien	5,633		138		54,008		991		20,422		919		56,230		1,726
Junior lien	286		408		4,817		360		3,975		1,403		5,523		899
Total consumer real estate	5,919		546		58,825		1,351		24,397		2,322		61,753		2,625
Commercial:
Commercial real estate	37,109		507		63,619		690		41,988		1,674		69,944		2,128
Commercial business	2,014		—		3,657		17		2,077		5		2,947		94
Total commercial	39,123		507		67,276		707		44,065		1,679		72,891		2,222
Inventory finance	497		22		832		9		693		77		265		54
Auto finance	1,134		—		675		—		909		—		440		—
Total impaired loans without an allowance recorded	46,673		1,075		127,608		2,067		70,064		4,078		135,349		4,901
Total impaired loans	$	265,877	$	3,702	$	762,645	$	7,027	$	290,238	$	11,364	$	783,705	$	20,649

Note 6.  Deposits

Deposits consisted of the following.

	At September 30, 2015						At December 31, 2014
(Dollars in thousands)	Weighted-Average Rate		Amount		% of Total		Weighted-Average Rate		Amount		% of Total
Checking:
Non-interest bearing	—	%	$	3,016,571	18.8	%	—	%	$	2,832,526	18.3	%
Interest bearing	0.02		2,361,453		14.7		0.04		2,362,717		15.3
Total checking	0.01		5,378,024		33.5		0.02		5,195,243		33.6
Savings	0.07		4,774,766		29.7		0.15		5,212,320		33.7
Money market	0.63		2,293,390		14.3		0.54		1,993,130		13.0
Certificates of deposit	0.88		3,612,253		22.5		0.78		3,049,189		19.7
Total deposits	0.29		$	16,058,433	100.0	%	0.26		$	15,449,882	100.0	%

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Certificates of deposit had the following remaining maturities at September 30, 2015.

(In thousands)	Denominations  $100 Thousand or Greater		Denominations Less Than  $100 Thousand		Total
Maturity:
0-3 months	$	229,752	$	315,023	$	544,775
4-6 months	318,684		387,072		705,756
7-12 months	683,865		710,942		1,394,807
13-24 months	432,510		430,804		863,314
Over 24 months	58,169		45,432		103,601
Total	$	1,722,980	$	1,889,273	$	3,612,253

Note 7.  Short-term Borrowings

Selected information for short-term borrowings (borrowings with an original maturity of less than one year) consisted of the following.

	At September 30, 2015				At December 31, 2014
(Dollars in thousands)	Amount		Rate		Amount		Rate
Period end balance:
Securities sold under repurchase agreements	$	31,251	0.04	%	$	4,425	0.10	%
Line of Credit - TCF Commercial Finance Canada, Inc.	5,258		1.75		—		—
Total	$	36,509	0.29		$	4,425	0.10
Average daily balances for the year to date period ended:
Federal Home Loan Bank advances	$	—	—	%	$	74,385	0.26	%
Federal funds purchased	169		0.43		375		0.40
Securities sold under repurchase agreements	12,866		0.09		5,956		0.18
Line of Credit - TCF Commercial Finance Canada, Inc.	2,571		1.97		2,957		1.88
Total	$	15,606	0.40		$	83,673	0.31
Maximum month-end balances for the year to date period ended:
Federal Home Loan Bank advances	$	—	N.A.		$	250,000	N.A.
Securities sold under repurchase agreements	62,995		N.A.		4,425		N.A.
Line of Credit - TCF Commercial Finance Canada, Inc.	5,519		N.A.		11,751		N.A.
N.A. Not Applicable.

At September 30, 2015, the securities sold under short-term repurchase agreements were related to TCF Bank's Repurchase Investment Sweep Agreement product and were collateralized by mortgage-backed securities having a period end fair value of $41.2 million.

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Note 8.  Long-term Borrowings

Long-term borrowings consisted of the following.

		At September 30, 2015							At December 31, 2014
(Dollars in thousands)	Stated Maturity	Amount		Stated Rate					Amount		Stated Rate
Federal Home Loan Bank advances	2015	$	—	—	%		—	%	$	125,000	0.37	%	-	0.38	%
	2016	447,000		0.39		-	1.17		547,000		0.25		-	1.17
	2017	275,000		0.24		-	0.26		275,000					0.25
Subtotal		722,000							947,000
Subordinated bank notes	2016	74,978					5.50		74,930					5.50
	2022	109,260					6.25		109,194					6.25
	2025	149,106					4.60		—					—
Hedge-related basis adjustment(1)		1,862							—
Subtotal		335,206							184,124
Discounted lease rentals	2015	10,355		2.39		-	7.95		32,904		2.39		-	7.95
	2016	44,691		2.39		-	7.95		27,539		2.39		-	7.95
	2017	38,343		2.45		-	7.95		20,580		2.45		-	7.95
	2018	21,016		2.53		-	7.95		9,032		2.63		-	7.95
	2019	6,582		2.53		-	6.00		2,589		2.63		-	5.05
	2020	481		2.95		-	4.57		160					4.57
	2021	83					4.57		83					4.57
Subtotal		121,551							92,887
Other long-term	2015	—					—		2,670					1.36
	2016	2,666					1.36		2,642					1.36
	2017	2,743					1.36		2,742					1.36
Subtotal		5,409							8,054
Total long-term borrowings		$	1,184,166						$	1,232,065

(1) Related to subordinated bank notes with a stated maturity of 2025 at September 30, 2015.

At September 30, 2015, TCF Bank had pledged loans secured by residential and commercial real estate and Federal Home Loan Bank ("FHLB") stock with an aggregate carrying value of $4.9 billion as collateral for FHLB advances. At September 30, 2015, $275.0 million of FHLB advances outstanding were prepayable monthly at TCF's option.

On February 27, 2015, TCF Bank issued $150.0 million of subordinated notes due February 27, 2025 with a fixed-rate coupon of 4.60% per annum (the "2025 Notes"), at a price to investors of 99.375%. In addition, TCF Bank incurred issuance costs of $1.4 million. Both the discount and issuance costs are amortized as interest expense over the respective term of the notes using the effective interest method. Interest is payable semi-annually, in arrears, on February 27 and August 27, and commenced on August 27, 2015. Simultaneously, TCF Bank entered into an interest rate swap with a total notional amount of $150.0 million designated as a fair value hedge of the 2025 Notes. See Note 12 of Notes to Consolidated Financial Statements, Derivative Instruments, for additional information regarding the interest rate swap.

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Note 9.  Regulatory Capital Requirements

TCF and TCF Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possible additional discretionary, actions by the federal banking agencies that could have a material adverse effect on TCF. In general, TCF Bank may not declare or pay a dividend to TCF Financial in excess of 100% of its net retained profits for the current year combined with its net retained profits for the preceding two calendar years, which was $440.2 million at September 30, 2015, without prior approval of the Office of the Comptroller of the Currency ("OCC"). TCF Bank's ability to make capital distributions in the future may require regulatory approval and may be restricted by its regulatory authorities. TCF Bank's ability to make any such distributions will also depend on its earnings and ability to meet minimum regulatory capital requirements in effect during future periods. These capital adequacy standards may be higher in the future than existing minimum regulatory capital requirements.

The following table presents regulatory capital information for TCF and TCF Bank. Information presented for September 30, 2015 reflects the transition to the Basel III capital standard from previous regulatory capital adequacy guidelines under the Basel I framework. The Basel III capital standard phases in through 2019 and revises the definition of capital, increases minimum capital ratios, introduces regulatory capital buffers above those minimums, introduces a common equity Tier 1 capital ratio and revises the rules for calculating risk-weighted assets. Banks that are not advanced approaches institutions may make a one-time election to opt out of the requirement to include components of accumulated other comprehensive income (loss) in common equity Tier 1 capital. TCF has elected to opt-out of the accumulated other comprehensive income (loss) requirement.

	TCF						TCF Bank
(Dollars in thousands)	September 30, 2015			December 31, 2014			September 30, 2015			December 31, 2014			Well-capitalized Standard		Minimum Capital Requirement
Regulatory Capital:
Common equity Tier 1 capital	$	1,774,729		N.A.			$	1,952,196		N.A.
Tier 1 capital	2,054,711			$	1,919,887		1,970,696			$	1,836,019
Total capital	2,446,551			2,209,999			2,385,498			2,126,131
Regulatory Capital Ratios:
Common equity Tier 1 capital ratio	10.04		%	N.A			11.04		%	N.A.			6.50	%	4.50	%
Tier 1 risk-based capital ratio	11.62			11.76		%	11.15			11.25		%	8.00		6.00
Total risk-based capital ratio	13.84			13.54			13.49			13.03			10.00		8.00
Tier 1 leverage ratio	10.43			10.07			10.01			9.63			5.00		4.00

N.A. Not Applicable.

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Note 10.  Stock Compensation

The following table reflects TCF's restricted stock and stock option transactions under the TCF Financial Incentive Stock Program ("Incentive Stock Program") and TCF Financial 2015 Omnibus Incentive Plan during the nine months ended September 30, 2015.

	Restricted Stock									Stock Options
	Shares		Price Range					Weighted- Average Grant Date Fair Value		Shares		Price Range					Weighted- Average Remaining Contractual Life in Years	Weighted- Average Exercise Price
Outstanding at December 31, 2014	2,858,494		$	6.16	-	$	16.02	$	12.73	1,579,000		$	12.85	-	$	15.75	2.98	$	13.91
Granted	711,683		14.17		-	16.28		14.49		—		—		-	—		—	—
Exercised	—		—		-	—		—		(200,000	)	12.85		-	12.85		—	12.85
Forfeited/canceled	(130,632	)	6.80		-	15.96		13.18		—		—		-	—		—	—
Vested	(201,809	)	9.65		-	15.96		13.21		—		—		-	—		—	—
Outstanding at September 30, 2015	3,237,736		6.16		-	16.28		13.06		1,379,000		12.85		-	15.75		2.42	14.07
Exercisable at September 30, 2015	N.A.							N.A.		1,379,000		12.85		-	15.75			14.07

N.A. Not Applicable.

Unrecognized stock compensation expense for restricted stock awards and options was $24.7 million, excluding estimated forfeitures, with a weighted-average remaining amortization period of 2.3 years at September 30, 2015.

At September 30, 2015, there were 1,100,000 shares of performance-based restricted stock outstanding that will vest only if certain return on asset goals and service conditions are achieved. Failure to achieve the performance and service conditions will result in all or a portion of the shares being forfeited.

Valuation and related assumption information for TCF's stock option plans related to options issued in 2008 have not changed from December 31, 2014 and no stock options were subsequently issued through September 30, 2015.

In April 2015, TCF stockholders approved the TCF Financial 2015 Omnibus Incentive Plan, which replaced the Incentive Stock Program. This plan authorized new performance-based restricted stock units to certain executives that were approved by the Compensation Committee of the TCF Board of Directors at its January 2015 meeting. The performance-based restricted stock units are subject to TCF’s relative total stockholder return for the period beginning January 1, 2015 through December 31, 2017, as measured against the peer group, which includes all publicly-traded banks and thrift institutions with assets between $10.0 billion and $50.0 billion as of September 30, 2014, excluding peers which do not remain publicly traded for the full three-year performance period. The number of restricted stock units granted was 71,404 at target and the actual restricted stock units granted will depend on actual performance with a maximum total payout of 150% of target.

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Note 11.  Employee Benefit Plans

The following tables set forth the net periodic benefit plan (income) cost included in compensation and employee benefits expense for the TCF Cash Balance Pension Plan (the "Pension Plan") and health care benefits for eligible retired employees (the "Postretirement Plan") for the three and nine months ended September 30, 2015 and 2014.

	Pension Plan
	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2015			2014			2015			2014
Interest cost	$	303		$	397		$	911		$	1,191
Return on plan assets	(159		)	(183		)	(479		)	(549		)
Net periodic benefit plan (income) cost	$	144		$	214		$	432		$	642

	Postretirement Plan
	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2015			2014			2015			2014
Interest cost	$	39		$	49		$	115		$	148
Amortization of prior service cost	(12		)	(12		)	(35		)	(35		)
Net periodic benefit plan (income) cost	$	27		$	37		$	80		$	113

TCF made no cash contributions to the Pension Plan in either of the nine months ended September 30, 2015 or 2014. During the three and nine months ended September 30, 2015 and 2014, TCF paid $0.1 million and $0.3 million, respectively, for benefits of the Postretirement Plan.

Note 12.  Derivative Instruments

All derivative instruments are recognized within other assets or other liabilities at fair value within the Consolidated Statements of Financial Condition. The value of derivative instruments will vary over their contractual terms as the related underlying rates fluctuate. The accounting for changes in the fair value of a derivative instrument depends on whether or not the contract has been designated and qualifies as a hedge. To qualify as a hedge, a contract must be highly effective at reducing the risk associated with the exposure being hedged. In addition, for a contract to be designated as a hedge, the risk management objective and strategy must be documented at inception. Hedge documentation must also identify the hedging instrument, the asset or liability and type of risk to be hedged and how the effectiveness of the contract is assessed prospectively and retrospectively. To assess effectiveness, TCF uses statistical methods such as regression analysis. A contract that has been, and is expected to continue to be, effective at offsetting changes in fair values or the net investment must be assessed and documented at least quarterly. If it is determined that a contract is not highly effective at hedging the designated exposure, hedge accounting is discontinued.

Upon origination of a derivative instrument, the contract is designated either as a hedge of the volatility of an investment in foreign operations driven by changes in foreign currency exchange rates ("net investment hedge"), a hedge of the exposure to changes in the fair value of an asset or liability due to changes in market risk ("fair value hedge"), or is not designated as a hedge. Changes in net investment hedges recorded within other comprehensive income (loss) are subsequently reclassified to non-interest expense during the period in which the foreign investment is substantially liquidated or when other elements of the currency translation adjustment are reclassified to income.

Net Investment Hedges  Forward foreign exchange contracts, that generally settle within 30 days, are used to manage the foreign exchange risk associated with the Company's net investment in TCF Commercial Finance Canada, Inc., a wholly-owned indirect Canadian subsidiary of TCF Bank.

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Fair Value Hedges During the first quarter of 2015, TCF Bank entered into an interest rate swap related to its contemporaneously issued subordinated debt, which settles through a central clearing house. The swap was designated as a fair value hedge and effectively converts the fixed interest rate to a floating rate based on three-month London InterBank Offered Rate ("LIBOR") plus a fixed number of basis points on the $150.0 million notional amount through February 27, 2025, the maturity date of the subordinated debt. In exchange, TCF Bank will receive 4.60% fixed-rate interest from the swap counterparty.

The interest rate swap substantially offsets the change in fair value of the hedged underlying debt that is attributable to the changes in market risk. The gains and losses related to changes in the fair value of the interest rate swap as well as the offsetting changes in fair value of the hedged debt are reflected in non-interest income.

Derivatives Not Designated as Hedges  TCF executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged with offsetting interest rate swaps that TCF executes with a third party and settles through a central clearing house, minimizing TCF's net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are reflected in non-interest income. These contracts have original fixed maturity dates ranging from three to seven years.

During the second quarter of 2012, TCF sold its Visa^® Class B stock. In conjunction with the sale, TCF and the purchaser entered into a derivative transaction whereby TCF may receive or be required to make cash payments whenever the conversion ratio of the Visa Class B stock into Visa Class A stock is adjusted. The fair value of this derivative has been determined using estimated future cash flows using probability weighted scenarios for multiple estimates of Visa's aggregate exposure to covered litigation matters, which include consideration of amounts funded by Visa into its escrow account for the covered litigation matters. Changes, if any, in the valuation of this swap agreement, which has no determinable maturity date, are reflected in non-interest income.

Certain of TCF's forward foreign exchange contracts are not designated as hedges and are generally settled within 30 days. Changes in the fair value of these forward foreign exchange contracts are reflected in non-interest expense.

TCF enters into interest rate lock commitments in conjunction with consumer real estate loans included in the correspondent lending program. These interest rate lock commitments are agreements to extend credit under certain specified terms and conditions at fixed rates and have original lock expirations of up to 60 days. They are not designated as hedges and accordingly, changes in the valuation of these commitments are reflected in non-interest income.

24

The following tables summarize TCF's outstanding derivative instruments as of September 30, 2015 and December 31, 2014. See Note 13, Fair Value Disclosures, for additional information.

	At September 30, 2015
(In thousands)	Notional Amount		Gross Amounts Recognized		Gross Amounts Offset			Net Amount Presented(1)
Derivative Assets:
Derivatives designated as hedges:
Interest rate contracts	$	150,000	$	2,029	$	—		$	2,029
Forward foreign exchange contracts	45,973		327		—			327
Derivatives not designated as hedges:
Forward foreign exchange contracts	402,568		2,506		(1,176		)	1,330
Interest rate contracts	82,884		2,510		—			2,510
Interest rate lock commitments	36,632		643		—			643
Total derivative assets			$	8,015	$	(1,176	)	$	6,839
Derivative Liabilities:
Derivatives not designated as hedges:
Forward foreign exchange contracts	$	112,680	$	348	$	(168	)	$	180
Interest rate contracts	82,884		2,624		(2,624		)	—
Other contracts	13,804		386		(386		)	—
Total derivative liabilities			$	3,358	$	(3,178	)	$	180
	At December 31, 2014
(In thousands)	Notional Amount		Gross Amounts Recognized		Gross Amounts Offset			Net Amount Presented(1)
Derivative Assets:
Derivatives designated as hedges:
Forward foreign exchange contracts	$	42,165	$	509	$	—		$	509
Derivatives not designated as hedges:
Forward foreign exchange contracts	275,962		2,702		(1,179		)	1,523
Interest rate contracts	101,166		1,798		—			1,798
Interest rate lock commitments	15,124		285		—			285
Total derivative assets			$	5,294	$	(1,179	)	$	4,115
Derivative Liabilities:
Derivatives not designated as hedges:
Forward foreign exchange contracts	$	189,310	$	177	$	(29	)	$	148
Interest rate contracts	101,166		1,877		(1,877		)	—
Other contracts	13,804		621		(621		)	—
Total derivative liabilities			$	2,675	$	(2,527	)	$	148

(1)  All amounts were offset in the Consolidated Statements of Financial Condition.

25

The following table summarizes the pre-tax impact of derivative activity within the Consolidated Statements of Income and the Consolidated Statements of Comprehensive Income.

		Three Months Ended September 30,					Nine Months Ended September 30,
(In thousands)	Income Statement Location	2015			2014		2015			2014
Consolidated Statements of Income
Fair value hedges:
Interest rate contracts	Non-interest income	$	6,296		$	—	$	2,029		$	—
Non-derivative hedged items	Non-interest income	(5,425		)	—		(1,862		)	—
Not designated as hedges:
Forward foreign exchange contracts	Non-interest expense	26,574			21,533		55,866			20,882
Interest rate lock commitments	Non-interest income	189			159		359			159
Interest rate contracts	Non-interest income	(48		)	10		(28		)	(40		)
Net gain (loss) recognized		$	27,586		$	21,702	$	56,364		$	21,001
Consolidated Statements of Comprehensive Income
Net investment hedges:
Forward foreign exchange contracts	Other comprehensive income (loss)	$	2,858		$	1,849	$	5,772		$	1,677
Net unrealized gain (loss)		$	2,858		$	1,849	$	5,772		$	1,677

TCF executes all of its forward foreign exchange contracts in the over-the-counter market with large financial institutions pursuant to International Swaps and Derivatives Association, Inc. agreements. These agreements include credit risk-related features that enhance the creditworthiness of these instruments as compared with other obligations of the respective counterparty with whom TCF has transacted by requiring that additional collateral be posted under certain circumstances. The amount of collateral required depends on the contract and is determined daily based on market and currency exchange rate conditions.

At September 30, 2015, credit risk-related contingent features existed on forward foreign exchange contracts with a notional value of $161.5 million. In the event TCF is rated less than BB- by Standard and Poor's, the contracts could be terminated or TCF may be required to provide approximately $3.2 million in additional collateral. There were no forward foreign exchange contracts containing credit risk-related features in a net liability position at September 30, 2015.

At September 30, 2015, TCF had posted $10.7 million and $1.4 million of cash collateral related to its interest rate contracts and other contracts, respectively, and had received $2.9 million of cash collateral related to its forward foreign exchange contracts.

Note 13.  Fair Value Disclosures

TCF uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The Company's fair values are based on the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Securities available for sale, certain loans and leases held for sale, forward foreign exchange contracts, interest rate contracts, other contracts, interest rate lock commitments, forward loan sales commitments and assets and liabilities held in trust for deferred compensation plans are recorded at fair value on a recurring basis. From time to time we may be required to record at fair value other assets on a non-recurring basis, such as certain securities held to maturity, loans, interest-only strips, other real estate owned and repossessed and returned assets. These non-recurring fair value adjustments typically involve application of lower-of-cost-or-market accounting or write-downs of individual assets.

The following is a discussion of the fair value hierarchy and the valuation methodologies used for assets and liabilities recorded at fair value on a recurring or non-recurring basis and for estimating fair value of financial instruments not recorded at fair value.

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TCF groups its assets and liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the degree and reliability of estimates and assumptions used to determine fair value as follows: Level 1, which includes valuations that are based on prices obtained from independent pricing sources for the same instruments traded in active markets; Level 2, which includes valuations that are based on prices obtained from independent pricing sources that are based on observable transactions of similar instruments, but not quoted markets; and Level 3, for which valuations are generated from Company model-based techniques that use significant unobservable inputs. Such unobservable inputs reflect estimates of assumptions that market participants would use in pricing the asset or liability.

Investments The carrying value of investments in FHLB stock and Federal Reserve Bank stock, categorized as Level 2, approximates fair value based on redemption at par value.

Securities Held to Maturity Securities held to maturity consist primarily of securities of U.S. Government sponsored enterprises and federal agencies. The fair value of securities of U.S. Government sponsored enterprises and federal agencies, categorized as Level 2, is estimated using prices obtained from independent asset pricing services that are based on observable transactions, but not quoted markets. Management reviews the prices obtained from independent asset pricing services for unusual fluctuations and comparisons to current market trading activity. The fair value of certain other securities held to maturity, categorized as Level 3, is estimated based on discounted cash flows using current market rates and consideration of credit exposure or other internal pricing methods. There is no observable secondary market for these securities.

Securities Available for Sale Securities available for sale consist primarily of securities of U.S. Government sponsored enterprises and federal agencies, and obligations of states and political subdivisions. The fair value of these securities, categorized as Level 2, is recorded using prices obtained from independent asset pricing services that are based on observable transactions, but not quoted markets. Management reviews the prices obtained from independent asset pricing services for unusual fluctuations and comparisons to current market trading activity. Other mortgage-backed securities, for which there is little or no market activity, are categorized as Level 3 assets and the fair value of these assets is determined by using internal pricing methods.

Loans and Leases Held for Sale Loans and leases held for sale are generally carried at the lower of cost or fair value. The cost of loans held for sale includes the unpaid principal balance, net of deferred loan fees and costs. Estimated fair values are based upon recent loan sale transactions and any available price quotes on loans with similar coupons, maturities and credit quality. Certain other loans and leases held for sale are recorded at fair value under the elected fair value option. TCF relies on internal valuation models which utilize quoted investor prices to estimate the fair value of these loans. Loans and leases held for sale are categorized as Level 3.

Loans The fair value of loans, categorized as Level 3, is estimated based on discounted expected cash flows and recent sales of similar loans. The discounted cash flows include assumptions for prepayment estimates over each loan's remaining life, consideration of the current interest rate environment compared with the weighted average rate of each portfolio, a credit risk component based on the historical and expected performance of each portfolio and a liquidity adjustment related to the current market environment. TCF also uses pricing data from recent sales of loans with similar risk characteristics as data points to validate the assumptions used in estimating the fair value of certain loans.

Loans for which repayment is expected to be provided solely by the value of the underlying collateral, categorized as Level 3 and recorded at fair value on a non-recurring basis, are valued based on the fair value of that collateral less estimated selling costs. Such loans include impaired loans as well as certain delinquent non-accrual consumer real estate and auto finance loans. The fair value of the collateral is determined based on internal estimates and assessments provided by third-party appraisers.

Forward Foreign Exchange Contracts TCF's forward foreign exchange contracts are currency contracts executed in over-the-counter markets and are recorded at fair value using a cash flow model that includes key inputs such as foreign exchange rates and, in accordance with GAAP, an assessment of the risk of counterparty non-performance. The risk of counterparty non-performance is based on external assessments of credit risk. The fair value of these contracts, categorized as Level 2, is based on observable transactions, but not quoted markets.

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Interest Rate Contracts TCF executes interest rate swaps with commercial banking customers to facilitate the customer's risk management strategy. These interest rate swaps are simultaneously hedged by offsetting interest rate swaps TCF executes with a third party, minimizing TCF's net risk exposure resulting from such transactions. TCF also entered into an interest rate swap to convert its fixed-rate 2025 Notes to floating rate debt. These derivative instruments are recorded at fair value. The fair value of these swap agreements, categorized as Level 2, is determined using a cash flow model which considers the forward curve, the discount curve and credit valuation adjustments related to counterparty and/or borrower non-performance risk.

Other Contracts TCF entered into a swap agreement related to the sale of TCF's Visa Class B stock, categorized as Level 3. The fair value of the Visa agreement is based upon TCF's estimated exposure related to the Visa covered litigation through a probability analysis of the funding and estimated settlement amounts.

Interest Rate Lock Commitments and Forward Loan Sales Commitments TCF's interest rate lock commitments are derivative instruments which are carried at fair value. The related forward loan sales commitments to sell the resulting loans held for sale are also recorded at fair value under the elected fair value option. TCF relies on internal valuation models to estimate the fair value of these instruments. The valuation models utilize estimated rates of successful loan closings and quoted investor prices. While these models use both Level 2 and 3 inputs, TCF has determined that the majority of the inputs significant in the valuation of these commitments fall within Level 3 and therefore they are categorized as Level 3.

Interest-Only Strips The fair value of interest-only strips, categorized as Level 3, represents the present value of future cash flows retained by TCF on certain assets. TCF uses available market data, along with its own empirical data and discounted cash flow models, to arrive at the estimated fair value of its interest-only strips. The present value of the estimated expected future cash flows to be received is determined by using discount, loss and prepayment rates that TCF believes are commensurate with the risks associated with the cash flows and what a market participant would use. These assumptions are inherently subject to volatility and uncertainty and, as a result, the estimated fair value of the interest-only strips may fluctuate significantly from period to period.

Other Real Estate Owned and Repossessed and Returned Assets The fair value of other real estate owned is based on independent appraisals, real estate brokers' price opinions or automated valuation methods, less estimated selling costs. Certain properties require assumptions that are not observable in an active market in the determination of fair value. The fair value of repossessed and returned assets is based on available pricing guides, auction results or price opinions, less estimated selling costs. Assets acquired through foreclosure, repossession or returned to TCF are initially recorded at the lower of the loan or lease carrying amount or fair value less estimated selling costs at the time of transfer to other real estate owned or repossessed and returned assets. Other real estate owned and repossessed and returned assets were written down $2.9 million and $10.4 million, which was included in foreclosed real estate and repossessed assets, net expense for the three and nine months ended September 30, 2015, respectively, compared with $2.8 million and $9.0 million for the same periods in 2014.

Deposits The fair value of checking, savings and money market deposits, categorized as Level 1, is deemed equal to the amount payable on demand. The fair value of certificates of deposit, categorized as Level 2, is estimated based on discounted cash flows using currently offered market rates. The intangible value of long-term relationships with depositors is not taken into account in the fair values disclosed.

Long-term Borrowings The fair value of TCF's long-term borrowings, categorized as Level 2, is estimated based on observable market prices and discounted cash flows using interest rates for borrowings of similar remaining maturities and characteristics. The fair value of other long-term borrowings, categorized as Level 3, is based on unobservable inputs determined at the time of origination.

Assets and Liabilities Held in Trust for Deferred Compensation Plans Assets held in trust for deferred compensation plans include investments in publicly traded securities, excluding TCF common stock reported in treasury and other equity, and U.S. Treasury notes. The fair value of these assets, categorized as Level 1, is based upon prices obtained from independent asset pricing services based on active markets. The fair value of the liabilities equals the fair value of the assets.

28

Financial Instruments with Off-Balance Sheet Risk The fair value of TCF's commitments to extend credit and standby letters of credit, categorized as Level 2, is estimated using fees currently charged to enter into similar agreements. Substantially all commitments to extend credit and standby letters of credit have floating interest rates and do not expose TCF to interest rate risk; therefore fair value is approximately equal to carrying value.

The following tables present the balances of assets and liabilities measured at fair value on a recurring and non-recurring basis.

	Fair Value Measurements at September 30, 2015
(In thousands)	Level 1		Level 2		Level 3		Total
Recurring Fair Value Measurements:
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	618,230	$	—	$	618,230
Other	—		—		38		38
Obligations of states and political subdivisions	—		164,727		—		164,727
Loans and leases held for sale	—		—		5,805		5,805
Forward foreign exchange contracts(1)	—		2,833		—		2,833
Interest rate contracts(1)	—		4,539		—		4,539
Interest rate lock commitments(1)	—		—		643		643
Forward loan sales commitments	—		—		26		26
Assets held in trust for deferred compensation plans	18,635		—		—		18,635
Total assets	$	18,635	$	790,329	$	6,512	$	815,476
Forward foreign exchange contracts(1)	$	—	$	348	$	—	$	348
Interest rate contracts(1)	—		2,624		—		2,624
Forward loan sales commitments	—		—		44		44
Liabilities held in trust for deferred compensation plans	18,635		—		—		18,635
Other contracts(1)	—		—		386		386
Total liabilities	$	18,635	$	2,972	$	430	$	22,037
Non-recurring Fair Value Measurements:
Securities held to maturity	$	—	$	—	$	1,177	$	1,177
Loans	—		—		140,535		140,535
Interest-only strips	—		—		7,578		7,578
Other real estate owned:
Consumer	—		—		40,139		40,139
Commercial	—		—		3,586		3,586
Repossessed and returned assets	—		3,431		1,458		4,889
Total non-recurring fair value measurements	$	—	$	3,431	$	194,473	$	197,904

(1) As permitted under GAAP, TCF has elected to net derivative receivables and derivative payables when a legally enforceable master netting agreement exists as well as the related cash collateral received and paid. For purposes of this table, the derivative receivable and derivative payable balances are presented gross of this netting adjustment.

29

	Fair Value Measurements at December 31, 2014
(In thousands)	Level 1		Level 2		Level 3		Total
Recurring Fair Value Measurements:
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	463,239	$	—	$	463,239
Other	—		—		55		55
Loans and leases held for sale	—		—		3,308		3,308
Forward foreign exchange contracts(1)	—		3,211		—		3,211
Interest rate contracts(1)	—		1,798		—		1,798
Interest rate lock commitments(1)	—		—		285		285
Forward loan sales commitments	—		—		19		19
Assets held in trust for deferred compensation plans	18,703		—		—		18,703
Total assets	$	18,703	$	468,248	$	3,667	$	490,618
Forward foreign exchange contracts(1)	$	—	$	177	$	—	$	177
Interest rate contracts(1)	—		1,877		—		1,877
Forward loan sales commitments	—		—		42		42
Liabilities held in trust for deferred compensation plans	18,703		—		—		18,703
Other contracts(1)	—		—		621		621
Total liabilities	$	18,703	$	2,054	$	663	$	21,420
Non-recurring Fair Value Measurements:
Securities held to maturity	$	—	$	—	$	1,516	$	1,516
Loans	—		—		164,897		164,897
Interest-only strips	—		—		41,204		41,204
Other real estate owned:
Consumer	—		—		40,502		40,502
Commercial	—		4,839		8,866		13,705
Repossessed and returned assets	—		1,563		1,425		2,988
Total non-recurring fair value measurements	$	—	$	6,402	$	258,410	$	264,812

(1) As permitted under GAAP, TCF has elected to net derivative receivables and derivative payables when a legally enforceable master netting agreement exists as well as the related cash collateral received and paid. For purposes of this table, the derivative receivable and derivative payable balances are presented gross of this netting adjustment.

Management assesses the appropriate classification of financial assets and liabilities within the fair value hierarchy by monitoring the level of availability of observable market information. Changes in markets or economic conditions, as well as changes to Company valuation models may require the transfer of financial instruments from one fair value level to another. Such transfers, if any, are recorded at the fair values as of the beginning of the quarter in which the transfer occurred. TCF had no transfers in the nine months ended September 30, 2015 and 2014.

30

The following table presents changes in Level 3 assets and liabilities measured at fair value on a recurring basis.

(In thousands)	Securities Available for Sale			Loans and Leases Held for Sale			Interest Rate Lock Commitments		Forward Loan Sales Commitments			Other Contracts
At or For the Three Months Ended September 30, 2015:
Asset (liability) balance, beginning of period	$	45		$	4,962		$	455	$	(5	)	$	(465	)
Total net gains (losses) included in:
Net income	—			18			188		(13		)	—
Sales	—			(76,677		)	—		—			—
Originations	—			77,502			—		—			—
Principal paydowns / settlements	(7		)	—			—		—			79
Asset (liability) balance, end of period	$	38		$	5,805		$	643	$	(18	)	$	(386	)
At or For the Three Months Ended September 30, 2014:
Asset (liability) balance, beginning of period	$	81		$	—		$	—	$	—		$	(737	)
Total net gains (losses) included in:
Net income	344			—			—		—			(15		)
Principal paydowns / settlements	(17		)	—			—		—			83
Asset (liability) balance, end of period	$	408		$	—		$	—	$	—		$	(669	)

(In thousands)	Securities Available for Sale			Loans and Leases Held for Sale			Interest Rate Lock Commitments		Forward Loan Sales Commitments			Other Contracts
At or For the Nine Months Ended September 30, 2015:
Asset (liability) balance, beginning of period	$	55		$	3,308		$	285	$	(23	)	$	(621	)
Total net gains (losses) included in:
Net income	—			50			358		5			—
Sales	—			(212,940		)	—		—			—
Originations	—			215,387			—		—			—
Principal paydowns / settlements	(17		)	—			—		—			235
Asset (liability) balance, end of period	$	38		$	5,805		$	643	$	(18	)	$	(386	)
At or For the Nine Months Ended September 30, 2014:
Asset (liability) balance, beginning of period	$	93		$	—		$	—	$	—		$	(899	)
Total net gains (losses) included in:
Net income	344			—			—		—			(15		)
Principal paydowns / settlements	(29		)	—			—		—			245
Asset (liability) balance, end of period	$	408		$	—		$	—	$	—		$	(669	)

Fair Value Option

In the third quarter of 2014, TCF initiated a correspondent lending program in which TCF Bank originates consumer mortgage loans and sells them to a wholesale partner. TCF elected the fair value option for these loans. This election facilitates the offsetting of changes in fair values of the loans held for sale and the derivative financial instruments used to economically hedge them. The following table presents the difference between the aggregate fair value and aggregate unpaid principal balance of these loans held for sale.

(In thousands)	At September 30, 2015		At December 31, 2014
Fair value carrying amount	$	5,805	$	3,308
Aggregate unpaid principal amount	5,641		3,205
Fair value carrying amount less aggregate unpaid principal	$	164	$	103

31

Differences between the fair value carrying amount and the aggregate unpaid principal balance include changes in fair value recorded at and subsequent to funding and gains and losses on the related loan commitment prior to funding. No loans recorded under the fair value option were delinquent or on non-accrual status at September 30, 2015 or December 31, 2014. The net gain from initial measurement of the correspondent lending loans held for sale, any subsequent changes in fair value while the loans are outstanding and any actual adjustment to the gains realized upon sales of the loans totaled $4.7 million for the nine months ended September 30, 2015, and is included in gains on sales of consumer real estate loans, net. This amount excludes the impact from the interest rate lock commitments and forward loan sales commitments which are also included in gains on sales of consumer real estate loans, net.

Disclosures About Fair Value of Financial Instruments

Management discloses the estimated fair value of financial instruments, both assets and liabilities on and off the balance sheet, for which it is practicable to estimate fair value. These fair value estimates were made at September 30, 2015 and December 31, 2014, based on relevant market information and information about the financial instruments. Fair value estimates are intended to represent the price at which an asset could be sold or a liability could be settled. However, given there is no active market or observable market transactions for many of the Company's financial instruments, the estimates of fair values are subjective in nature, involve uncertainties and include matters of significant judgment. Changes in assumptions could significantly affect the estimated values.

The following tables present the carrying amounts and estimated fair values of the Company's financial instruments, excluding short-term financial assets and liabilities as their carrying amounts approximate fair value and excluding financial instruments recorded at fair value on a recurring basis. This information represents only a portion of TCF's balance sheet and not the estimated value of the Company as a whole. Non-financial instruments such as the intangible value of TCF's branches and core deposits, leasing operations, goodwill, premises and equipment and the future revenues from TCF's customers are not reflected in this disclosure. Therefore, this information is of limited use in assessing the value of TCF.

	Carrying Amount			Estimated Fair Value at September 30, 2015
(In thousands)				Level 1		Level 2			Level 3		Total
Financial instrument assets:
Investments	$	76,543		$	—	$	76,543		$	—	$	76,543
Securities held to maturity	204,129			—		207,432			4,577		212,009
Loans and leases held for sale	116,155			—		—			123,926		123,926
Loans:
Consumer real estate	5,613,714			—		—			5,728,048		5,728,048
Commercial real estate	2,561,828			—		—			2,507,532		2,507,532
Commercial business	550,497			—		—			528,109		528,109
Equipment finance	1,858,265			—		—			1,847,767		1,847,767
Inventory finance	2,153,385			—		—			2,139,272		2,139,272
Auto finance	2,427,367			—		—			2,442,324		2,442,324
Other	20,674			—		—			16,619		16,619
Allowance for loan losses(1)	(153,962		)	—		—			—		—
Interest-only strips(2)	50,699			—		—			54,066		54,066
Total financial instrument assets	$	15,479,294		$	—	$	283,975		$	15,392,240	$	15,676,215
Financial instrument liabilities:
Deposits	$	16,058,433		$	12,446,180	$	3,631,649		$	—	$	16,077,829
Long-term borrowings	1,184,166			—		1,187,433			5,409		1,192,842
Total financial instrument liabilities	$	17,242,599		$	12,446,180	$	4,819,082		$	5,409	$	17,270,671
Financial instruments with off-balance sheet risk:(3)
Commitments to extend credit	$	24,582		$	—	$	24,582		$	—	$	24,582
Standby letters of credit	(32		)	—		(32		)	—		(32		)
Total financial instruments with off-balance sheet risk	$	24,550		$	—	$	24,550		$	—	$	24,550

(1) Expected credit losses are included in the estimated fair values.

(2) Carrying amounts are included in other assets.

(3) Positive amounts represent assets, negative amounts represent liabilities.

32

	Carrying Amount			Estimated Fair Value at December 31, 2014
(In thousands)				Level 1		Level 2			Level 3		Total
Financial instrument assets:
Investments	$	85,492		$	—	$	85,492		$	—	$	85,492
Securities held to maturity	214,454			—		217,418			4,916		222,334
Loans and leases held for sale	132,266			—		—			139,370		139,370
Loans:
Consumer real estate	5,682,364			—		—			5,836,770		5,836,770
Commercial real estate	2,624,255			—		—			2,575,625		2,575,625
Commercial business	533,410			—		—			512,083		512,083
Equipment finance	1,806,808			—		—			1,787,271		1,787,271
Inventory finance	1,877,090			—		—			1,864,786		1,864,786
Auto finance	1,915,061			—		—			1,927,384		1,927,384
Other	24,144			—		—			18,724		18,724
Allowance for loan losses(1)	(164,169		)	—		—			—		—
Interest-only strips(2)	69,789			—		—			73,058		73,058
Total financial instrument assets	$	14,800,964		$	—	$	302,910		$	14,739,987	$	15,042,897
Financial instrument liabilities:
Deposits	$	15,449,882		$	12,400,693	$	3,063,850		$	—	$	15,464,543
Long-term borrowings	1,232,065			—		1,246,221			8,054		1,254,275
Total financial instrument liabilities	$	16,681,947		$	12,400,693	$	4,310,071		$	8,054	$	16,718,818
Financial instruments with off-balance sheet risk:(3)
Commitments to extend credit	$	25,885		$	—	$	25,885		$	—	$	25,885
Standby letters of credit	(47		)	—		(47		)	—		(47		)
Total financial instruments with off-balance sheet risk	$	25,838		$	—	$	25,838		$	—	$	25,838

(1) Expected credit losses are included in the estimated fair values.

(2) Carrying amounts are included in other assets.

(3) Positive amounts represent assets, negative amounts represent liabilities.

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Note 14.  Earnings Per Common Share

TCF's restricted stock awards that pay non-forfeitable common stock dividends meet the criteria of a participating security. Accordingly, earnings per share is calculated using the two-class method, under which earnings are allocated to both common shares and participating securities.

	Three Months Ended   September 30,				Nine Months Ended   September 30,
(Dollars in thousands, except per-share data)	2015		2014		2015		2014
Basic Earnings Per Common Share:
Net income available to common stockholders	$	47,728	$	47,470	$	130,090	$	135,658
Earnings allocated to participating securities	12		12		34		35
Earnings allocated to common stock	$	47,716	$	47,458	$	130,056	$	135,623
Weighted-average common shares outstanding for basic earnings per common share	165,990,432		163,901,076		165,479,029		163,310,983
Basic earnings per common share	$	0.29	$	0.29	$	0.79	$	0.83
Diluted Earnings Per Common Share:
Earnings allocated to common stock	$	47,716	$	47,458	$	130,056	$	135,623
Weighted-average common shares outstanding used in basic earnings per common share calculation	165,990,432		163,901,076		165,479,029		163,310,983
Net dilutive effect of:
Non-participating restricted stock	355,408		322,210		312,402		250,060
Stock options	210,280		256,325		221,908		262,286
Weighted-average common shares outstanding for diluted earnings per common share	166,556,120		164,479,611		166,013,339		163,823,329
Diluted earnings per common share	$	0.29	$	0.29	$	0.78	$	0.83

All shares of restricted stock are deducted from weighted-average shares outstanding for the computation of basic earnings per common share. Shares of performance-based restricted stock and restricted stock units are included in the calculation of diluted earnings per common share, using the treasury stock method, at the beginning of the quarter in which the performance goals have been achieved. All other shares of restricted stock, which vest over specified time periods, stock options and warrants are included in the calculation of diluted earnings per common share, using the treasury stock method.

For the three and nine months ended September 30, 2015, there were 4.4 million and 4.6 million, respectively, of outstanding shares related to non-participating restricted stock, stock options and warrants that were not included in the computation of diluted earnings per share because they were anti-dilutive.For the three and nine months ended September 30, 2014, there were 4.1 million and 4.2 million, respectively, of outstanding shares related to non-participating restricted stock, stock options and warrants that were not included in the computation of diluted earnings per share because they were anti-dilutive.

Note 15.  Business Segments

Lending, Funding and Support Services have been identified as reportable segments. Lending includes consumer real estate, commercial real estate and business lending, leasing and equipment finance, inventory finance and auto finance. Funding includes branch banking and treasury services. Support Services includes Holding Company and corporate functions that provide data processing, bank operations and other professional services to the operating segments.

TCF evaluates performance and allocates resources based on each segment's net income or loss. The business segments follow GAAP as described in Note 1, Summary of Significant Accounting Policies, in Item 8 of TCF's 2014 Annual Report on Form 10-K. TCF generally accounts for inter-segment sales and transfers at cost.

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The following tables set forth certain information for each of TCF's reportable segments, including a reconciliation of TCF's consolidated totals.

(In thousands)	Lending		Funding			Support Services			Eliminations			Consolidated
At or For the Three Months Ended September 30, 2015:
Net interest income	$	155,130	$	51,356		$	14		$	(1,230	)	$	205,270
Provision for credit losses	9,101		917			—			—			10,018
Non-interest income	56,439		55,819			28,063			(28,069		)	112,252
Non-interest expense	115,503		106,353			28,497			(28,069		)	222,284
Income tax expense (benefit)	31,599		(7		)	166			(1,230		)	30,528
Income (loss) after income tax expense (benefit)	55,366		(88		)	(586		)	—			54,692
Income attributable to non-controlling interest	2,117		—			—			—			2,117
Preferred stock dividends	—		—			4,847			—			4,847
Net income (loss) available to common stockholders	$	53,249	$	(88	)	$	(5,433	)	$	—		$	47,728
Total assets	$	17,642,476	$	7,024,906		$	195,747		$	(4,737,193	)	$	20,125,936
Revenues from external customers:
Interest income	$	216,777	$	6,827		$	—		$	—		$	223,604
Non-interest income	56,439		55,807			6			—			112,252
Total	$	273,216	$	62,634		$	6		$	—		$	335,856
At or For the Three Months Ended September 30, 2014:
Net interest income	$	149,048	$	56,017		$	44		$	(929	)	$	204,180
Provision for credit losses	14,593		1,146			—			—			15,739
Non-interest income	58,432		57,453			34,232			(34,041		)	116,076
Non-interest expense	107,892		111,749			34,088			(34,041		)	219,688
Income tax expense (benefit)	31,525		236			(41		)	(929		)	30,791
Income (loss) after income tax expense (benefit)	53,470		339			229			—			54,038
Income attributable to non-controlling interest	1,721		—			—			—			1,721
Preferred stock dividends	—		—			4,847			—			4,847
Net income (loss) available to common stockholders	$	51,749	$	339		$	(4,618	)	$	—		$	47,470
Total assets	$	16,821,067	$	5,894,540		$	178,781		$	(3,872,285	)	$	19,022,103
Revenues from external customers:
Interest income	$	214,070	$	5,633		$	—		$	—		$	219,703
Non-interest income	58,432		57,438			206			—			116,076
Total	$	272,502	$	63,071		$	206		$	—		$	335,779

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(In thousands)	Lending		Funding			Support Services			Eliminations			Consolidated
At or For the Nine Months Ended September 30, 2015:
Net interest income	$	464,478	$	153,073		$	85		$	(2,917	)	$	614,719
Provision for credit losses	33,680		1,657			—			—			35,337
Non-interest income	165,528		158,922			88,424			(86,535		)	326,339
Non-interest expense	342,533		326,727			89,435			(86,535		)	672,160
Income tax expense (benefit)	91,344		(5,949		)	(220		)	(2,917		)	82,258
Income (loss) after income tax expense (benefit)	162,449		(10,440		)	(706		)	—			151,303
Income attributable to non-controlling interest	6,672		—			—			—			6,672
Preferred stock dividends	—		—			14,541			—			14,541
Net income (loss) available to common stockholders	$	155,777	$	(10,440	)	$	(15,247	)	$	—		$	130,090
Total assets	$	17,642,476	$	7,024,906		$	195,747		$	(4,737,193	)	$	20,125,936
Revenues from external customers:
Interest income	$	647,878	$	18,601		$	—		$	—		$	666,479
Non-interest income	165,528		158,884			1,927			—			326,339
Total	$	813,406	$	177,485		$	1,927		$	—		$	992,818
At or For the Nine Months Ended September 30, 2014:
Net interest income	$	443,245	$	170,657		$	98		$	(2,445	)	$	611,555
Provision for credit losses	37,950		2,190			—			—			40,140
Non-interest income	156,921		165,082			102,013			(100,517		)	323,499
Non-interest expense	318,733		328,557			103,246			(100,517		)	650,019
Income tax expense (benefit)	89,275		1,938			(13		)	(2,445		)	88,755
Income (loss) after income tax expense (benefit)	154,208		3,054			(1,122		)	—			156,140
Income attributable to non-controlling interest	5,941		—			—			—			5,941
Preferred stock dividends	—		—			14,541			—			14,541
Net income (loss) available to common stockholders	$	148,267	$	3,054		$	(15,663	)	$	—		$	135,658
Total assets	$	16,821,067	$	5,894,540		$	178,781		$	(3,872,285	)	$	19,022,103
Revenues from external customers:
Interest income	$	637,851	$	16,570		$	—		$	—		$	654,421
Non-interest income	156,921		165,037			1,541			—			323,499
Total	$	794,772	$	181,607		$	1,541		$	—		$	977,920

Note 16.  Litigation Contingencies

From time to time, TCF is a party to legal proceedings arising out of its lending, leasing and deposit operations, including foreclosure proceedings and other collection actions as part of its lending and leasing collections activities. TCF may also be subject to regulatory examinations and enforcement actions brought by federal regulators, including the Securities and Exchange Commission ("SEC"), the Federal Reserve, the OCC and the Consumer Financial Protection Bureau ("CFPB"), and TCF's regulatory authorities may impose sanctions on TCF for failures related to regulatory compliance. From time to time, borrowers and other customers, and employees and former employees, have also brought actions against TCF, in some cases claiming substantial damages. TCF and other financial services companies are subject to the risk of class action litigation. Litigation is often unpredictable and the actual results of litigation cannot be determined, and therefore the ultimate resolution of a matter and the possible range of loss associated with certain potential outcomes cannot be established. Except as discussed below, based on our current understanding of TCF’s pending legal proceedings, management does not believe that judgments or settlements arising from pending or threatened legal matters, individually or in the aggregate, would have a material adverse effect on the consolidated financial position, operating results or cash flows of TCF.

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On October 29, 2015, TCF received a Notice and Opportunity to Respond and Advise letter ("NORA Letter") from the CFPB notifying TCF that the CFPB’s Office of Enforcement is considering recommending that the CFPB take legal action against TCF related to compliance with laws relating to unfair, deceptive and abusive acts and practices and Regulation E, §1005.17, in connection with TCF’s practices in administering checking account overdraft program "opt-in" requirements. The purpose of a NORA Letter is to ensure that potential subjects of enforcement actions have the opportunity to present their positions to the CFPB before an enforcement action is recommended or commenced. The NORA Letter offers TCF the opportunity to make a written statement setting forth any reasons of law or policy why TCF believes that the CFPB should not take action against it, which TCF intends to do. We are currently unable to predict the ultimate timing or outcome of this matter. There can be no assurance that the CFPB will not utilize its enforcement authority through settlement, administrative proceedings or litigation and seek remediation, disgorgement, penalties, other monetary relief, injunctive relief or changes to TCF’s business practices or operations, which could have a material adverse effect on TCF.

Note 17.  Accumulated Other Comprehensive Income (Loss)

The components of other comprehensive income (loss) and the related tax effects are presented in the table below.

	Three Months Ended September 30,
	2015									2014
(In thousands)	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax
Securities available for sale:
Unrealized gains (losses) arising during the period	$	9,972		$	(3,766	)	$	6,206		$	(862	)	$	324		$	(538	)
Reclassification of net (gains) losses to net income	281			(106		)	175			254			(94		)	160
Net unrealized gains (losses)	10,253			(3,872		)	6,381			(608		)	230			(378		)
Net investment hedges:
Unrealized gains (losses) arising during the period	2,858			(1,079		)	1,779			1,849			(698		)	1,151
Foreign currency translation adjustment:(1)
Unrealized gains (losses) arising during the period	(3,049		)	—			(3,049		)	(2,066		)	—			(2,066		)
Recognized postretirement prior service cost:
Reclassification of net (gains) losses to net income	(12		)	4			(8		)	(12		)	4			(8		)
Total other comprehensive income (loss)	$	10,050		$	(4,947	)	$	5,103		$	(837	)	$	(464	)	$	(1,301	)
	Nine Months Ended September 30,
	2015									2014
(In thousands)	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax
Securities available for sale:
Unrealized gains (losses) arising during the period	$	2,971		$	(1,122	)	$	1,849		$	19,652		$	(7,401	)	$	12,251
Reclassification of net (gains) losses to net income	871			(329		)	542			(375		)	142			(233		)
Net unrealized gains (losses)	3,842			(1,451		)	2,391			19,277			(7,259		)	12,018
Net investment hedges:
Unrealized gains (losses) arising during the period	5,772			(2,180		)	3,592			1,677			(633		)	1,044
Foreign currency translation adjustment:(1)
Unrealized gains (losses) arising during the period	(6,318		)	—			(6,318		)	(2,043		)	—			(2,043		)
Recognized postretirement prior service cost:
Reclassification of net (gains) losses to net income	(35		)	13			(22		)	(35		)	13			(22		)
Total other comprehensive income (loss)	$	3,261		$	(3,618	)	$	(357	)	$	18,876		$	(7,879	)	$	10,997

(1)  Foreign investments are deemed to be permanent in nature and therefore TCF does not provide for taxes on foreign currency translation adjustments.

Reclassifications of net (gains) losses to net income for securities available for sale were recorded in the Consolidated Statements of Income in gains (losses) on securities, net for sales of securities and in interest income for those securities that were previously transferred to held to maturity. See Note 3, Securities Available for Sale and Securities Held to Maturity, for additional information regarding the transfer. The tax effect of these reclassifications was recorded in income tax expense in the Consolidated Statements of Income. See Note 11, Employee Benefit Plans, for additional information regarding TCF's recognized postretirement prior service cost.

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Accumulated other comprehensive income (loss) balances are presented in the table below.

(In thousands)	Securities Available for Sale			Net Investment Hedges		Foreign Currency Translation Adjustment			Recognized Postretirement Prior Service Cost			Total
At or For the Three Months Ended September 30, 2015:
Balance, beginning of period	$	(12,881	)	$	4,349	$	(8,029	)	$	191		$	(16,370	)
Other comprehensive income (loss)	6,206			1,779		(3,049		)	—			4,936
Amounts reclassified from accumulated other comprehensive income (loss)	175			—		—			(8		)	167
Net other comprehensive income (loss)	6,381			1,779		(3,049		)	(8		)	5,103
Balance, end of period	$	(6,500	)	$	6,128	$	(11,078	)	$	183		$	(11,267	)
At or For the Three Months Ended September 30, 2014:
Balance, beginning of period	$	(14,587	)	$	484	$	(1,033	)	$	221		$	(14,915	)
Other comprehensive income (loss)	(538		)	1,151		(2,066		)	—			(1,453		)
Amounts reclassified from accumulated other comprehensive income (loss)	160			—		—			(8		)	152
Net other comprehensive income (loss)	(378		)	1,151		(2,066		)	(8		)	(1,301		)
Balance, end of period	$	(14,965	)	$	1,635	$	(3,099	)	$	213		$	(16,216	)
(In thousands)	Securities Available for Sale			Net Investment Hedges		Foreign Currency Translation Adjustment			Recognized Postretirement Prior Service Cost			Total
At or For the Nine Months Ended September 30, 2015:
Balance, beginning of period	$	(8,891	)	$	2,536	$	(4,760	)	$	205		$	(10,910	)
Other comprehensive income (loss)	1,849			3,592		(6,318		)	—			(877		)
Amounts reclassified from accumulated other comprehensive income (loss)	542			—		—			(22		)	520
Net other comprehensive income (loss)	2,391			3,592		(6,318		)	(22		)	(357		)
Balance, end of period	$	(6,500	)	$	6,128	$	(11,078	)	$	183		$	(11,267	)
At or For the Nine Months Ended September 30, 2014:
Balance, beginning of period	$	(26,983	)	$	591	$	(1,056	)	$	235		$	(27,213	)
Other comprehensive income (loss)	12,251			1,044		(2,043		)	—			11,252
Amounts reclassified from accumulated other comprehensive income (loss)	(233		)	—		—			(22		)	(255		)
Net other comprehensive income (loss)	12,018			1,044		(2,043		)	(22		)	10,997
Balance, end of period	$	(14,965	)	$	1,635	$	(3,099	)	$	213		$	(16,216	)

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TCF FINANCIAL CORPORATION AND SUBSIDIARIES

Item 2. Management's Discussion and Analysis of Financial

Condition and Results of Operations

Overview

TCF Financial Corporation, a Delaware corporation ("we," "us," "our," "TCF," or the "Company"), is a national bank holding company based in Wayzata, Minnesota. Unless otherwise indicated, references herein to "TCF" include its direct and indirect subsidiaries. Its principal subsidiary, TCF National Bank ("TCF Bank"), is headquartered in Sioux Falls, South Dakota. References herein to "TCF Financial" refer to TCF Financial Corporation on an unconsolidated basis. At September 30, 2015, TCF had 375 branches in Illinois, Minnesota, Michigan, Colorado, Wisconsin, Arizona, South Dakota and Indiana (TCF's primary banking markets).

TCF provides convenient financial services through multiple channels in its primary banking markets. TCF has developed products and services designed to meet the specific needs of the largest consumer segments in the market. The Company focuses on attracting and retaining customers through service and convenience, including select locations open seven days a week with extended hours and on most holidays, extensive full-service supermarket branches, automated teller machine ("ATM") networks and internet, mobile and telephone banking. TCF's philosophy is to generate interest income, fees and other revenue growth through business lines that emphasize higher yielding assets and low interest cost deposits. TCF's growth strategies include organic growth in existing businesses, development of new products and services, new customer acquisition through electronic channels and acquisitions of portfolios or companies. New products and services are designed to build on existing businesses and expand into complementary products and services through strategic initiatives. Funded through deposit generation, TCF continues to focus on asset growth in its leasing and equipment finance, inventory finance and auto finance businesses, as well as expanding its junior lien lending business.

Net interest income, the difference between interest income earned on loans and leases, securities, investments and other interest-earning assets (interest income) and interest paid on deposits and borrowings (interest expense), represented 64.6% and 63.8% of TCF's total revenue for the third quarter of 2015 and 2014, respectively. Net interest income can change significantly from period to period based on general levels of interest rates, customer prepayment patterns, the mix of interest-earning assets and the mix of interest-bearing and non-interest bearing deposits and borrowings. TCF manages the risk of changes in interest rates on its net interest income through a management Asset & Liability Committee and through related interest rate risk monitoring and management policies. See "Part I, Item 3. Quantitative and Qualitative Disclosures about Market Risk" and "Part II, Item 1A. Risk Factors" for further discussion.

Non-interest income is a significant source of revenue for TCF and an important component of TCF's results of operations. Increasing fee and service charge revenue has been challenging as a result of changing consumer behavior and the impact of changes in regulations. Providing a wide range of retail banking services is an integral component of TCF's business philosophy and a major strategy for generating non-interest income. Key drivers of bank fees and service charges are the number of deposit accounts and related transaction activity. In addition, as an effort to diversify TCF's non-interest income sources and manage credit concentration risk, the Company continues to sell loans, primarily in auto finance and consumer real estate, which result in gains on sales as well as increase servicing fee income through the growth of loans sold with servicing retained by TCF.

The following portions of this Management's Discussion and Analysis of Financial Condition and Results of Operations ("Management's Discussion and Analysis") focus in more detail on the results of operations for the third quarter and first nine months of 2015 and 2014, and on information about TCF's balance sheet, loan and lease portfolio, liquidity, funding resources, capital and other matters.

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Results of Operations

Performance Summary TCF reported diluted earnings per common share of 29 cents and 78 cents for the third quarter and first nine months of 2015, respectively, compared with diluted earnings per common share of 29 cents and 83 cents for the same periods in 2014. TCF reported net income of $52.6 million and $144.6 million for the third quarter and first nine months of 2015, respectively, compared with net income of $52.3 million and $150.2 million for the same periods in 2014.

Return on average assets was 1.10% and 1.02% for the third quarter and first nine months of 2015, respectively, compared with 1.15% and 1.11% for the same periods in 2014. Return on average common equity was 9.76% and 9.07% for the third quarter and first nine months of 2015, respectively, compared with 10.50% and 10.30% for the same periods in 2014.

Reportable Segment Results

Lending TCF's lending strategy is primarily to originate high credit quality secured loans and leases for investment and for sale. The lending portfolio consists of consumer real estate, commercial real estate and business lending, leasing and equipment finance, inventory finance and auto finance. Lending's disciplined portfolio growth generates earning assets and, along with its fee generating capabilities, produces a significant portion of the Company's revenue and net income. Lending generated net income available to common stockholders of $53.2 million and $155.8 million for the third quarter and first nine months of 2015, respectively, compared with $51.7 million and $148.3 million for the same periods in 2014.

Lending net interest income totaled $155.1 million and $464.5 million for the third quarter and first nine months of 2015, respectively, compared with $149.0 million and $443.2 million for the same periods in 2014. The increases from both periods were primarily driven by higher average loan and lease balances in the auto finance, inventory finance and leasing and equipment finance portfolios, partially offset by lower consumer real estate first mortgage lien balances due to run-off and margin compression.

Lending provision for credit losses totaled $9.1 million and $33.7 million for the third quarter and first nine months of 2015, respectively, compared with $14.6 million and $38.0 million for the same periods in 2014. The decreases from both periods were driven by improved credit quality in the consumer real estate and commercial portfolios.

Lending non-interest income totaled $56.4 million and $165.5 million for the third quarter and first nine months of 2015, respectively, compared with $58.4 million and $156.9 million for the same periods in 2014. The decrease from the third quarter of 2014 was primarily due to decreases in net gains on sales of auto loans and consumer real estate loans, partially offset by an increase in leasing and equipment finance income and servicing fee income due to an increase in the portfolio of loans serviced for others. The increase from the first nine months of 2014 was primarily due to an increase in servicing fee income due to the cumulative effect of an increase in the portfolio of auto and consumer real estate loans sold with servicing retained by TCF and an increase in leasing and equipment finance income, partially offset by decreases in net gains on sales of auto loans and consumer real estate loans.

Lending non-interest expense totaled $115.5 million and $342.5 million for the third quarter and first nine months of 2015, respectively, compared with $107.9 million and $318.7 million for the same periods in 2014. The increases from both periods were primarily due to increased staff levels to support the growth of auto finance and further build out of the risk management function.

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Funding TCF's funding is primarily derived from branch banking and wholesale borrowings, with a focus on building and maintaining quality customer relationships. Deposits are generated from consumers and small businesses providing a source of low cost funds and fee income. Borrowings may be used to offset reductions in deposits or to support lending activities. Funding reported net loss available to common stockholders of $0.1 million and $10.4 million for the third quarter and first nine months of 2015, respectively, compared with net income of $0.3 million and $3.1 million for the same periods in 2014.

Funding net interest income totaled $51.4 million and $153.1 million for the third quarter and first nine months of 2015, respectively, compared with $56.0 million and $170.7 million for the same periods in 2014. The decreases from both periods were primarily due to higher interest rates paid on money market accounts and certificates of deposit.

Funding non-interest income totaled $55.8 million and $158.9 million for the third quarter and first nine months of 2015, respectively, compared with $57.5 million and $165.1 million for the same periods in 2014. The decreases from both periods were primarily due to a reduction in fees and service charges due to consumer behavior changes, as well as higher average checking account balances per customer, partially offset by increased card revenue due to increased transaction volume.

Funding non-interest expense totaled $106.4 million and $326.7 million for the third quarter and first nine months of 2015, respectively, compared with $111.7 million and $328.6 million for the same periods in 2014. The decreases from both periods were primarily due to decreases in FDIC insurance expense, resulting from a lower assessment rate primarily as a result of the TDR loan sale that occurred in the fourth quarter of 2014 and improved credit metrics.

Consolidated Income Statement Analysis

Net Interest Income  Net interest income represented 64.6% and 65.3% of TCF's total revenue for the third quarter and first nine months of 2015, respectively, compared with 63.8% and 65.4% for the same periods in 2014. Net interest income divided by average interest-earning assets is referred to as the net interest margin, expressed as a percentage. Net interest income and net interest margin are affected by changes in prevailing short- and long-term interest rates, loan and deposit pricing strategies and competitive conditions, the volume and the mix of interest-earning assets and both non-interest bearing deposits and interest-bearing liabilities, the level of non-accrual loans and leases and other real estate owned and the impact of modified loans and leases.

41

The following table summarizes TCF's average balances, interest, dividends and yields and rates on major categories

of TCF's interest-earning assets and interest-bearing liabilities on a fully tax-equivalent basis.

	Three Months Ended September 30,
	2015						2014
(Dollars in thousands)	Average Balance		Interest		Yields and Rates(1)		Average Balance		Interest		Yields and Rates(1)
Assets:
Investments and other	$	463,312	$	2,937	2.52	%	$	493,309	$	3,800	3.06	%
Securities held to maturity	205,264		1,361		2.65		217,114		1,445		2.66
Securities available for sale(2)	694,373		4,432		2.55		446,514		2,973		2.66
Loans and leases held for sale	348,215		7,895		9.00		301,512		5,881		7.74
Loans and leases:
Consumer real estate:
Fixed-rate	2,637,875		37,988		5.72		3,292,031		47,221		5.69
Variable-rate	2,968,507		38,287		5.12		2,813,848		36,556		5.15
Total consumer real estate	5,606,382		76,275		5.40		6,105,879		83,777		5.44
Commercial:
Fixed-rate	1,137,744		14,484		5.05		1,443,130		17,870		4.91
Variable- and adjustable-rate	1,980,280		18,958		3.80		1,701,005		16,787		3.92
Total commercial	3,118,024		33,442		4.26		3,144,135		34,657		4.37
Leasing and equipment finance	3,821,590		43,863		4.59		3,575,698		42,130		4.71
Inventory finance	2,036,054		29,915		5.83		1,806,271		28,137		6.18
Auto finance	2,361,057		24,557		4.13		1,603,392		17,601		4.36
Other	9,833		157		6.31		11,599		231		7.90
Total loans and leases(3)	16,952,940		208,209		4.88		16,246,974		206,533		5.05
Total interest-earning assets	18,664,104		224,834		4.79		17,705,423		220,632		4.95
Other assets(4)	1,219,585						1,148,033
Total assets	$	19,883,689					$	18,853,456
Liabilities and Equity:
Non-interest bearing deposits:
Retail	$	1,649,995					$	1,540,794
Small business	852,211						823,273
Commercial and custodial	516,461						424,134
Total non-interest bearing deposits	3,018,667						2,788,201
Interest-bearing deposits:
Checking	2,399,119		135		0.02		2,307,066		236		0.04
Savings	4,860,509		638		0.05		5,506,895		2,088		0.15
Money market	2,297,893		3,571		0.62		1,527,820		2,288		0.59
Certificates of deposit	3,400,282		7,958		0.93		3,028,259		6,099		0.80
Total interest-bearing deposits	12,957,803		12,302		0.38		12,370,040		10,711		0.34
Total deposits	15,976,470		12,302		0.31		15,158,241		10,711		0.28
Borrowings:
Short-term borrowings	30,326		17		0.22		9,523		23		0.95
Long-term borrowings	1,060,092		6,015		2.27		1,060,135		4,789		1.80
Total borrowings	1,090,418		6,032		2.21		1,069,658		4,812		1.80
Total interest-bearing liabilities	14,048,221		18,334		0.52		13,439,698		15,523		0.46
Total deposits and borrowings	17,066,888		18,334		0.43		16,227,899		15,523		0.38
Other liabilities	578,718						537,864
Total liabilities	17,645,606						16,765,763
Total TCF Financial Corp. stockholders' equity	2,218,614						2,071,140
Non-controlling interest in subsidiaries	19,469						16,553
Total equity	2,238,083						2,087,693
Total liabilities and equity	$	19,883,689					$	18,853,456
Net interest income and margin			$	206,500	4.40				$	205,109	4.60

(1) Annualized.

(2) Average balances and yields of securities available for sale are based upon historical amortized cost and exclude equity securities.

(3) Average balances of loans and leases include non-accrual loans and leases and are presented net of unearned income.

(4) Includes operating leases.

42

	Nine Months Ended September 30,
	2015						2014
(Dollars in thousands)	Average Balance		Interest		Yields and Rates(1)		Average Balance		Interest		Yields and Rates(1)
Assets:
Investments and other	$	559,443	$	9,650	2.31	%	$	578,768	$	11,839	2.73	%
Securities held to maturity	208,891		4,150		2.65		192,181		3,852		2.67
Securities available for sale(2)	581,801		11,078		2.54		440,727		8,941		2.70
Loans and leases held for sale	322,022		21,505		8.93		246,283		14,860		8.07
Loans and leases:
Consumer real estate:
Fixed-rate	2,774,523		121,044		5.83		3,394,126		144,125		5.68
Variable-rate	2,853,636		109,476		5.13		2,784,553		107,129		5.14
Total consumer real estate	5,628,159		230,520		5.48		6,178,679		251,254		5.44
Commercial:
Fixed-rate	1,201,022		45,168		5.03		1,505,730		56,869		5.05
Variable- and adjustable-rate	1,938,947		55,972		3.86		1,626,858		49,116		4.04
Total commercial	3,139,969		101,140		4.31		3,132,588		105,985		4.52
Leasing and equipment finance	3,767,954		131,086		4.64		3,504,194		124,185		4.73
Inventory finance	2,145,535		91,671		5.71		1,908,628		86,088		6.03
Auto finance	2,198,983		68,041		4.14		1,483,951		49,158		4.43
Other	10,721		555		6.92		12,299		703		7.64
Total loans and leases(3)	16,891,321		623,013		4.93		16,220,339		617,373		5.09
Total interest-earning assets	18,563,478		669,396		4.82		17,678,298		656,865		4.96
Other assets(4)	1,222,171						1,122,573
Total assets	$	19,785,649					$	18,800,871
Liabilities and Equity:
Non-interest bearing deposits:
Retail	$	1,665,489					$	1,552,477
Small business	826,581						794,735
Commercial and custodial	501,297						400,010
Total non-interest bearing deposits	2,993,367						2,747,222
Interest-bearing deposits:
Checking	2,400,338		423		0.02		2,337,624		758		0.04
Savings	5,011,341		2,539		0.07		5,835,814		7,023		0.16
Money market	2,236,811		10,588		0.63		1,124,821		3,961		0.47
Certificates of deposit	3,187,577		20,904		0.88		2,773,254		15,883		0.77
Total interest-bearing deposits	12,836,067		34,454		0.36		12,071,513		27,625		0.31
Total deposits	15,829,434		34,454		0.29		14,818,735		27,625		0.25
Borrowings:
Short-term borrowings	15,606		47		0.40		108,860		248		0.30
Long-term borrowings	1,158,070		17,259		1.99		1,305,980		14,993		1.53
Total borrowings	1,173,676		17,306		1.97		1,414,840		15,241		1.44
Total interest-bearing liabilities	14,009,743		51,760		0.49		13,486,353		42,866		0.42
Total deposits and borrowings	17,003,110		51,760		0.41		16,233,575		42,866		0.35
Other liabilities	587,168						529,397
Total liabilities	17,590,278						16,762,972
Total TCF Financial Corp. stockholders' equity	2,175,676						2,020,151
Non-controlling interest in subsidiaries	19,695						17,748
Total equity	2,195,371						2,037,899
Total liabilities and equity	$	19,785,649					$	18,800,871
Net interest income and margin			$	617,636	4.45				$	613,999	4.64

(1) Annualized.

(2) Average balances and yields of securities available for sale are based upon historical amortized cost and exclude equity securities.

(3) Average balances of loans and leases include non-accrual loans and leases and are presented net of unearned income.

(4) Includes operating leases.

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Net interest income, including the impact of tax-equivalent adjustments of $1.2 million, was $206.5 million for the third quarter of 2015, an increase of 0.7% from $205.1 million for the same period of 2014. Net interest income, including the impact of tax-equivalent adjustments of $2.9 million, was $617.6 million for the first nine months of 2015, an increase of 0.6% from $614.0 million for the same period of 2014. The increases from both periods were primarily driven by higher average loan and lease balances in the auto finance, inventory finance and leasing and equipment finance portfolios, partially offset by lower consumer real estate first mortgage lien balances due to run-off and margin compression.

Net interest margin was 4.40% and 4.60% for the third quarter of 2015 and 2014, respectively. Net interest margin was 4.45% and 4.64% for the first nine months of 2015 and 2014, respectively. The decreases from both periods were primarily due to margin compression resulting from the competitive low interest rate environment and higher rates on money market accounts and certificates of deposit.

Provision for Credit Losses  The provision for credit losses is calculated as part of the determination of the allowance for loan and lease losses, which is a critical accounting estimate. TCF's evaluation of incurred losses is based upon historical loss rates multiplied by the respective portfolio's loss emergence period. Factors utilized in the determination and allocation of the allowance for loan and lease losses and the related provision for credit losses include historical trends in loss rates, a portfolio's overall risk characteristics, changes in its character or size, risk rating migration, delinquencies, collateral values and prevailing economic conditions.

The following tables summarize the composition of TCF's provision for credit losses for the third quarter and first nine months of 2015 and 2014.

	Three Months Ended September 30,										Change
(Dollars in thousands)	2015					2014					$			%
Consumer real estate	$	780		7.8	%	$	6,636		42.2	%	$	(5,856	)	(88.2	)%
Commercial	(226		)	(2.3	)	1,785			11.4		(2,011		)	N.M.
Leasing and equipment finance	1,389			13.9		(391		)	(2.5	)	1,780			N.M.
Inventory finance	546			5.4		411			2.6		135			32.8
Auto finance	6,750			67.4		6,302			40.0		448			7.1
Other	779			7.8		996			6.3		(217		)	(21.8	)
Total	$	10,018		100.0	%	$	15,739		100.0	%	$	(5,721	)	(36.3	)

	Nine Months Ended September 30,									Change
(Dollars in thousands)	2015					2014				$			%
Consumer real estate	$	8,660		24.5	%	$	17,821	44.5	%	$	(9,161	)	(51.4	)%
Commercial	(295		)	(0.8	)	737		1.8		(1,032		)	N.M.
Leasing and equipment finance	2,973			8.4		1,782		4.4		1,191			66.8
Inventory finance	2,627			7.4		1,336		3.3		1,291			96.6
Auto finance	20,186			57.1		16,650		41.5		3,536			21.2
Other	1,186			3.4		1,814		4.5		(628		)	(34.6	)
Total	$	35,337		100.0	%	$	40,140	100.0	%	$	(4,803	)	(12.0	)

N.M. Not Meaningful.

TCF provided $10.0 million and $35.3 million for credit losses during the third quarter and first nine months of 2015, respectively, compared with $15.7 million and $40.1 million for the same periods in 2014. The decreases from both periods were driven by improved credit quality in the consumer real estate and commercial portfolios.

Net loan and lease charge-offs for the third quarter and first nine months of 2015 were $9.9 million, or 0.23% (annualized) of average loans and leases, and $39.0 million, or 0.31% (annualized) of average loans and leases, respectively, compared with $26.9 million, or 0.66% (annualized), and $62.7 million, or 0.52% (annualized), for the same periods in 2014. The decreases from both periods were primarily due to improved credit quality in the consumer real estate and commercial portfolios.

For additional information, see "Consolidated Financial Condition Analysis — Credit Quality" in this Management's Discussion and Analysis.

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Non-interest Income  Non-interest income is a significant source of revenue for TCF, representing 35.4% and 34.7% of total revenues for the third quarter and first nine months of 2015, respectively, compared with 36.2% and 34.6% for the same periods in 2014, and is an important factor in TCF's results of operations. Total fees and other revenue were $112.4 million and $326.6 million for the third quarter and first nine months of 2015, respectively, compared with $116.2 million and $322.5 million for the same periods in 2014.

Fees and Service Charges  Fees and service charges totaled $37.0 million and $107.3 million for the third quarter and first nine months of 2015, respectively, compared with $40.3 million and $114.9 million for the same periods in 2014. The decreases from both periods were primarily due to consumer behavior changes, as well as higher average checking account balances per customer.

Card Revenue  Card revenue, primarily interchange fees, totaled $13.8 million and $40.6 million for the third quarter and first nine months of 2015, respectively, compared with $13.0 million and $38.5 million for the same periods in 2014. The increases from both periods were primarily due to increased transaction volume.

TCF is the 17^th largest issuer of Visa^® consumer debit cards and the 16^th largest issuer of Visa small business debit cards in the United States, based on payment volume for the three months ended June 30, 2015, as provided by Visa. TCF earns interchange revenue from customer card transactions paid primarily by merchants, not TCF's customers. Card revenue represented 24.4% and 24.7% of banking fee revenue for the third quarter and first nine months of 2015, respectively, compared with 22.0% and 22.6% for the same periods in 2014.

Gains on Sales of Auto Loans, Net  TCF recognized net gains of $10.8 million and $28.7 million on the recorded investment of auto loans sold, including accrued interest, of $441.5 million and $1.1 billion for the third quarter and first nine months of 2015, respectively, compared with recognized net gains of $15.3 million and $31.5 million on the recorded investment of auto loans sold, including accrued interest, of $486.9 million and $970.4 million for the same periods in 2014. During the third quarter and first nine months of 2015, TCF recognized net gains of $10.8 million and $22.0 million on the recorded investment of auto loans sold, including accrued interest, of $441.5 million and $880.8 million in securitization transactions, respectively. During both the third quarter and first nine months of 2014, TCF recognized a net gain of $7.4 million on the recorded investment of auto loans sold, including accrued interest, of $258.6 million in a securitization transaction.

Gains on Sales of Consumer Real Estate Loans, Net  TCF recognized net gains of $6.9 million and $26.9 million on the recorded investment of consumer real estate loans sold, including accrued interest, of $246.8 million and $878.5 million for the third quarter and first nine months of 2015, respectively, compared with recognized net gains of $8.6 million and $28.3 million on the recorded investment of consumer real estate loans sold, including accrued interest, of $234.6 million and $808.6 million for the same periods in 2014. TCF has two consumer real estate loan sale programs; one that sells nationally originated junior lien loans and the other that originates first mortgage lien loans in our primary banking markets and sells the loans through a correspondent relationship. Included in the consumer real estate recognized net gains was $1.7 million and $4.7 million on the recorded investment of first mortgage lien loans sold related to the correspondent lending program, including accrued interest, of $76.7 million and $212.9 million for the third quarter and first nine months of 2015, respectively. There were no sales of correspondent lending loans during the third quarter and first nine months of 2014.

Servicing Fee Income  Servicing fee income totaled $8.0 million and $22.6 million for the third quarter and first nine months of 2015, respectively, compared with $5.9 million and $15.1 million for the same periods in 2014. The increases from both periods were primarily due to the cumulative effect of an increase in the portfolio of auto and consumer real estate loans sold with servicing retained by TCF. Total loans and leases serviced for others was $4.1 billion as of September 30, 2015, compared with $3.1 billion as of September 30, 2014.

Non-interest Expense  Non-interest expense totaled $222.3 million and $672.2 million for the third quarter and first nine months of 2015, respectively, compared with $219.7 million and $650.0 million for the same periods in 2014.

Compensation and Employee Benefits Compensation and employee benefits expense totaled $116.7 million and $348.7 million for the third quarter and first nine months of 2015, respectively, compared with $112.4 million and $337.1 million for the same periods in 2014. The increases from both periods were primarily due to the increased staff levels to support the growth of auto finance and further build out of the risk management function.

45

FDIC Insurance  FDIC insurance expense totaled $4.8 million and $15.1 million for the third quarter and first nine months of 2015, respectively, compared with $7.3 million and $22.5 million for the same periods in 2014. The decreases from both periods were due to a lower assessment rate primarily as a result of the TDR loan sale that occurred in the fourth quarter of 2014 and improved credit metrics.

Income Taxes  Income tax expense totaled $30.5 million for the third quarter of 2015, or 35.8% of income before income tax expense, compared with $30.8 million, or 36.3% for the same period in 2014. Income tax expense totaled $82.3 million for the first nine months of 2015, or 35.2% of income before income tax expense, compared with $88.8 million, or 36.2% for the same period in 2014.

Consolidated Financial Condition Analysis

Loans and Leases  Total loans and leases were $17.2 billion at September 30, 2015, an increase of 4.9%, from $16.4 billion at December 31, 2014, primarily driven by growth in the auto finance and inventory finance portfolios.

Consumer Real Estate The consumer real estate portfolio consisted of $2.7 billion and $2.9 billion of first mortgage lien loans and junior lien loans, respectively, at September 30, 2015, a decrease of 13.2% and an increase of 13.6%, respectively, from $3.1 billion and $2.5 billion, respectively, at December 31, 2014. At September 30, 2015, 54.1% of the consumer real estate portfolio carried a variable interest rate tied to the prime rate, compared with 47.7% at December 31, 2014. The average Fair Isaac Corporation ("FICO^®") credit score at loan origination for the consumer real estate lending portfolio was 732 and 734 as of September 30, 2015 and December 31, 2014, respectively. As part of TCF's credit risk monitoring, TCF obtains updated FICO score information quarterly. The average updated FICO score for the retail lending portfolio was 731 and 730 as of September 30, 2015 and December 31, 2014, respectively. Outstanding balances on home equity lines of credit were $2.7 billion and $2.3 billion at September 30, 2015 and December 31, 2014, respectively. At September 30, 2015, 56.9% of the consumer real estate loan balance had been originated since January 1, 2009 with annualized net charge-offs of 0.04%.

Commercial Real Estate and Business Lending The commercial real estate and business lending portfolio consisted of $2.6 billion and $0.6 billion of commercial real estate loans and commercial business loans, respectively, at September 30, 2015, a decrease of 2.4% and an increase of 3.2%, respectively, from $2.6 billion and $0.5 billion, respectively, at December 31, 2014. At September 30, 2015, 85.1% of TCF's commercial real estate loans outstanding were secured by properties located in its primary banking markets, compared with 88.3% at December 31, 2014. With an emphasis on secured lending, 99.9% of TCF's total commercial loans were secured either by properties or other business assets at both September 30, 2015 and December 31, 2014. Variable and adjustable-rate loans represented 64.1% of the total commercial loans outstanding at September 30, 2015, compared with 58.3% at December 31, 2014.

Leasing and Equipment Finance The leasing and equipment finance portfolio consisted of $2.0 billion of leases and $1.9 billion of loans, respectively, at September 30, 2015, an increase of 4.0% and 2.9%, respectively, from $1.9 billion of leases and $1.8 billion of loans at December 31, 2014. The uninstalled backlog of approved transactions was $501.5 million at September 30, 2015, compared with $418.0 million at December 31, 2014.

Inventory Finance Inventory finance loans totaled $2.2 billion at September 30, 2015, an increase of 14.7% from $1.9 billion at December 31, 2014, primarily due to an increase within lawn and garden, combined with growth in the powersports segment as our customers continue to experience growth in their businesses.

Auto Finance Auto finance loans totaled $2.4 billion at September 30, 2015, an increase of 26.8% from $1.9 billion at December 31, 2014. The increase was due to continued growth as TCF expands the number of active dealers in its network. The auto finance network included dealers in all 50 states and more than 11,400 active dealers at September 30, 2015, compared with more than 10,500 active dealers at December 31, 2014. The auto finance portfolio consisted of 25.0% new car loans and 75.0% used car loans at September 30, 2015, compared with 25.4% and 74.6%, respectively, at December 31, 2014. The average original FICO score for the held for investment auto finance portfolio was 725 and 724 at September 30, 2015 and December 31, 2014, respectively.

46

Credit Quality  The following sections summarize TCF's loan and lease portfolio based on what TCF believes are the most important credit quality data that should be used to understand the overall condition of the portfolio.

Past Due Loans and Leases  The following table summarizes TCF's over 60-day delinquent loan and lease portfolio by type, excluding non-accrual loans and leases. Delinquent balances are determined based on the contractual terms of the loan or lease. See Note 5 of Notes to Consolidated Financial Statements, Allowance for Loan and Lease Losses and Credit Quality Information, for additional information.

	At September 30, 2015				At December 31, 2014
(Dollars in thousands)	Loans and Leases Balance		Percentage of Portfolio		Loans and Leases Balance		Percentage of Portfolio
Consumer real estate:
First mortgage lien	$	8,400	0.36	%	$	13,370	0.49	%
Junior lien	2,316		0.08		2,091		0.08
Total consumer real estate	10,716		0.21		15,461		0.30
Commercial	7,468		0.25		—		—
Leasing and equipment finance	7,276		0.19		2,549		0.07
Inventory finance	195		0.01		75		—
Auto finance	2,769		0.11		4,263		0.22
Other	35		0.17		—		—
Subtotal	28,459		0.17		22,348		0.14
Delinquencies in acquired portfolios	1,120		0.37		88		0.03
Total	$	29,579	0.17		$	22,436	0.14

Loan Modifications  The following table provides a summary of accruing TDR loans.

(Dollars in thousands)	At September 30, 2015			At December 31, 2014
Consumer real estate	$	107,557		$	111,933
Commercial	40,480			80,375
Leasing and equipment finance	1,657			924
Inventory finance	123			527
Auto finance	400			—
Other	18			89
Total	$	150,235		$	193,848
Over 60-day delinquency as a percentage of total accruing TDR loans	1.14		%	1.39		%

TCF modifies loans through reductions in interest rates, extension of payment dates, term extensions or term extensions with a reduction of contractual payments, but generally not through reductions of principal.

Loan modifications to borrowers who have not been granted concessions are not included in the table above. Loan modifications to troubled borrowers are not reported as TDR loans in the calendar years after modification if the loans were modified to an interest rate equal to or greater than the yields of new loan originations with comparable risk at the time of restructuring and if the loan is performing based on the restructured terms; however, these loans are still considered impaired and follow TCF's impaired loan reserve policies.

Under consumer real estate programs, TCF typically reduces a customer's contractual payments through reducing the interest rate by an amount appropriate for the borrower's financial condition. Loans discharged in Chapter 7 bankruptcy where the borrower did not reaffirm the debt are reported as non-accrual TDR loans upon discharge as a result of the removal of the borrower's personal liability on the loan. These loans may return to accrual status when TCF expects full repayment of the remaining pre-discharged contractual principal and interest. Although loans classified as TDR loans are considered impaired, TCF received more than 60% of the original contractual interest due on accruing consumer real estate TDR loans during the third quarter of 2015, yielding 4.1%, by modifying the loans to qualified customers instead of foreclosing on the property.

47

Commercial loans modified when on non-accrual status continue to be reported as non-accrual loans until there is sustained repayment performance for a reasonable period of at least six consecutive months. At September 30, 2015, 80.2% of total commercial TDR loans were accruing and TCF recognized more than 87% of the original contractual interest due on accruing commercial TDR loans during the third quarter of 2015. At September 30, 2015, collection of principal and interest under the modified terms was reasonably assured on all accruing commercial TDR loans.

TCF previously utilized a multiple note structure as a workout alternative for certain commercial loans, which restructured a troubled loan into two notes. When utilizing this multiple note structure, the first note was always classified as a TDR loan. Under TCF policy, the first note was established at an amount and with market terms that provide reasonable assurance of payment and performance. If the loan was modified at an interest rate equal to the yield of a new loan originated with comparable risk at the time of restructuring and the loan is performing based on the terms of the restructuring agreement, this note may be removed from TDR loan classification in the calendar year after modification. This note is reported on accrual status if the loan has been formally restructured so as to be reasonably assured of payment and performance according to its modified terms. This evaluation includes consideration of the customer's payment performance for a reasonable period of at least six consecutive months, which may include time prior to the restructuring, before the loan is returned to accrual status. The second note is charged-off. This second note is a separate and distinct legal contract and is still outstanding. Should the borrower's financial position improve, the loan may become recoverable. At September 30, 2015, two TDR loans restructured as multiple notes with a combined total contractual balance of $11.4 million and a remaining book balance of $10.8 million are included in the preceding table.

See Note 5 of Notes to Consolidated Financial Statements, Allowance for Loan and Lease Losses and Credit Quality Information, for additional information regarding TCF's loan modifications.

Non-accrual Loans and Leases and Other Real Estate Owned  The following table summarizes TCF's non-accrual loans and leases and other real estate owned.

(Dollars in thousands)	At September 30, 2015			At December 31, 2014
Consumer real estate:
First mortgage lien	$	130,343		$	137,790
Junior lien	41,599			35,481
Total consumer real estate	171,942			173,271
Commercial:
Commercial real estate	10,885			24,554
Commercial business	3,674			481
Total commercial	14,559			25,035
Leasing and equipment finance	10,197			12,670
Inventory finance	1,711			2,082
Auto finance	7,698			3,676
Other	3			—
Total non-accrual loans and leases	206,110			216,734
Other real estate owned	58,584			65,650
Total non-accrual loans and leases and other real estate owned	$	264,694		$	282,384
Non-accrual loans and leases as a percentage of total loans and leases	1.20		%	1.32		%
Non-accrual loans and leases and other real estate owned as a percentage of total loans and leases and other real estate owned	1.53			1.71
Allowance for loan and lease losses as a percentage of non-accrual loans and leases	74.70			75.75

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The following table summarizes TCF's non-accrual TDR loans included in the table above.

(In thousands)	At September 30, 2015		At December 31, 2014
Consumer real estate	$	83,125	$	87,685
Commercial	10,015		11,265
Leasing and equipment finance	1,037		1,953
Inventory finance	173		37
Auto finance	6,855		3,676
Total	$	101,205	$	104,616

Consumer real estate loans are generally placed on non-accrual status once they become 90 days past due and are charged-off to the estimated fair value of underlying collateral, less estimated selling costs, no later than 150 days past due. Commercial loans are generally placed on non-accrual status once they become 90 days past due unless they are well secured and in the process of collection. Auto loans are generally charged-off to the fair value of the collateral, less estimated selling costs, upon entering non-accrual status no later than 120 days past due. Any necessary additional reserves are established for commercial loans, leasing and equipment finance loans and leases, and inventory finance loans when reported as non-accrual. Most of TCF's non-accrual loans and past due loans are secured by real estate. Given the nature of these assets and the related mortgage foreclosure, property sale and, if applicable, mortgage insurance claims processes, it can take 18 months or longer for a loan to migrate from initial delinquency to final disposition. This resolution process generally takes much longer for loans secured by real estate than for unsecured loans or loans secured by other property primarily due to state real estate foreclosure laws.

Changes in the amount of non-accrual loans and leases for the three and nine months ended September 30, 2015 are summarized in the following tables.

	At or For the Three Months Ended September 30, 2015
(In thousands)	Consumer Real Estate			Commercial			Leasing and Equipment Finance			Inventory Finance			Auto Finance			Other			Total
Balance, beginning of period	$	167,854		$	17,112		$	11,440		$	2,896		$	6,405		$	3		$	205,710
Additions	35,130			4,932			3,841			1,693			2,903			6			48,505
(Charge-offs) recoveries	(4,968		)	(482		)	(1,055		)	(84		)	(506		)	40			(7,055		)
Transfers to other assets	(15,121		)	—			(679		)	(253		)	(347		)	—			(16,400		)
Return to accrual status	(4,143		)	(2,827		)	(1,576		)	(1,644		)	—			—			(10,190		)
Payments received	(6,566		)	(4,509		)	(1,774		)	(1,069		)	(757		)	(46		)	(14,721		)
Sales	—			(705		)	—			—			—			—			(705		)
Other, net	(244		)	1,038			—			172			—			—			966
Balance, end of period	$	171,942		$	14,559		$	10,197		$	1,711		$	7,698		$	3		$	206,110

	At or For the Nine Months Ended September 30, 2015
(In thousands)	Consumer Real Estate			Commercial			Leasing and Equipment Finance			Inventory Finance			Auto Finance			Other			Total
Balance, beginning of period	$	173,271		$	25,035		$	12,670		$	2,082		$	3,676		$	—		$	216,734
Additions	101,284			9,636			11,504			11,166			7,395			13			140,998
(Charge-offs) recoveries	(20,382		)	(3,931		)	(3,845		)	(917		)	(1,007		)	56			(30,026		)
Transfers to other assets	(46,861		)	(245		)	(1,811		)	(1,376		)	(626		)	—			(50,919		)
Return to accrual status	(17,527		)	(2,827		)	(1,884		)	(5,918		)	—			—			(28,156		)
Payments received	(17,891		)	(10,992		)	(6,437		)	(4,112		)	(1,740		)	(66		)	(41,238		)
Sales	—			(3,308		)	—			—			—			—			(3,308		)
Other, net	48			1,191			—			786			—			—			2,025
Balance, end of period	$	171,942		$	14,559		$	10,197		$	1,711		$	7,698		$	3		$	206,110

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Loan Credit Classifications TCF assesses the risk of its loan and lease portfolio utilizing numerous risk characteristics as outlined in the previous sections. The loan credit classifications represent an additional characteristic that is closely monitored in the overall credit risk process. The loan credit classifications derived from standard regulatory rating definitions include: accruing non-classified (pass and special mention) and accruing classified (substandard and doubtful). Accruing classified loans and leases have well-defined weaknesses, but may never become non-accrual or result in a loss.

The following tables summarize accruing loans and leases by portfolio and regulatory classification and non-accrual loans and leases by portfolio.

	At September 30, 2015
	Accruing Non-classified						Accruing Classified						Total Accruing			Total Non-accrual			Total Loans and Leases
(Dollars in thousands)	Pass			Special Mention			Substandard			Doubtful
Consumer real estate	$	5,351,918		$	65,960		$	23,894		$	—		$	5,441,772		$	171,942		$	5,613,714
Commercial	3,003,093			52,292			42,381			—			3,097,766			14,559			3,112,325
Leasing and equipment finance	3,834,966			19,062			9,356			—			3,863,384			10,197			3,873,581
Inventory finance	1,865,582			123,790			162,302			—			2,151,674			1,711			2,153,385
Auto finance	2,415,014			—			4,655			—			2,419,669			7,698			2,427,367
Other	20,636			—			35			—			20,671			3			20,674
Total loans and leases	$	16,491,209		$	261,104		$	242,623		$	—		$	16,994,936		$	206,110		$	17,201,046
Percent of total loans and leases	95.9		%	1.5		%	1.4		%	—		%	98.8		%	1.2		%	100.0		%

	At December 31, 2014
	Accruing Non-classified						Accruing Classified						Total Accruing			Total Non-accrual			Total Loans and Leases
(Dollars in thousands)	Pass			Special Mention			Substandard			Doubtful
Consumer real estate	$	5,395,103		$	69,811		$	44,179		$	—		$	5,509,093		$	173,271		$	5,682,364
Commercial	3,033,992			46,935			51,703			—			3,132,630			25,035			3,157,665
Leasing and equipment finance	3,704,565			16,539			11,548			—			3,732,652			12,670			3,745,322
Inventory finance	1,661,701			90,413			122,894			—			1,875,008			2,082			1,877,090
Auto finance	1,906,740			—			4,645			—			1,911,385			3,676			1,915,061
Other	24,136			8			—			—			24,144			—			24,144
Total loans and leases	$	15,726,237		$	223,706		$	234,969		$	—		$	16,184,912		$	216,734		$	16,401,646
Percent of total loans and leases	95.9		%	1.4		%	1.4		%	—		%	98.7		%	1.3		%	100.0		%

The combined balance of accruing classified loans and leases and non-accrual loans and leases was $448.7 million at September 30, 2015, a decrease of $3.0 million from December 31, 2014, primarily due to a decrease of substandard loans in the consumer real estate loan portfolio and improved credit quality and continued efforts to actively work out problem loans in the commercial portfolio, partially offset by an increase of substandard loans in the inventory finance portfolio. Included in the table above in the non-accrual column are $53.3 million and $50.0 million of consumer real estate loans discharged in Chapter 7 bankruptcy that were not reaffirmed at September 30, 2015 and December 31, 2014, respectively.

Allowance for Loan and Lease Losses  The determination of the allowance for loan and lease losses is a critical accounting estimate. TCF's evaluation of incurred losses is based upon historical loss rates multiplied by the respective portfolio's loss emergence period. Factors utilized in the determination of the amount of the allowance include historical trends in loss rates, a portfolio's overall risk characteristics, changes in its character or size, risk rating migration, delinquencies, collateral values and prevailing economic conditions. The various factors used in the methodologies are reviewed on a periodic basis.

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The Company considers the allowance for loan and lease losses of $154.0 million appropriate to cover losses incurred in the loan and lease portfolios at September 30, 2015. However, no assurance can be given that TCF will not, in any particular period, sustain loan and lease losses that are sizable in relation to the amount reserved or will not require significant changes in the balance of the allowance for loan and lease losses due to subsequent evaluations of the loan and lease portfolios, in light of factors then prevailing, including economic conditions, TCF's ongoing credit review process or regulatory requirements. Among other factors, an economic slowdown, increasing levels of unemployment and/or a decline in collateral values may have an adverse impact on the current adequacy of the allowance for loan and lease losses by increasing credit risk and the risk of potential loss.

The total allowance for loan and lease losses is generally available to absorb losses from any segment of the portfolio. The allocation of TCF's allowance for loan and lease losses disclosed in the following table is subject to change based on changes in the criteria used to evaluate the allowance and is not necessarily indicative of the trend of future losses in any particular portfolio.

In conjunction with Note 5 of Notes to Consolidated Financial Statements, Allowance for Loan and Lease Losses and Credit Quality Information, the following table includes detailed information regarding TCF's allowance for loan and lease losses.

	At September 30, 2015				At December 31, 2014
(Dollars in thousands)	Allowance		Percentage of Portfolio		Allowance		Percentage of Portfolio
Consumer real estate:
First mortgage lien	$	38,834	1.43	%	$	55,319	1.76	%
Junior lien	31,495		1.09		30,042		1.18
Consumer real estate	70,329		1.25		85,361		1.50
Commercial:
Commercial real estate	22,269		0.87		24,616		0.94
Commercial business	7,737		1.41		6,751		1.27
Total commercial	30,006		0.96		31,367		0.99
Leasing and equipment finance	18,177		0.47		18,446		0.49
Inventory finance	11,121		0.52		10,020		0.53
Auto finance	23,722		0.98		18,230		0.95
Other	607		2.94		745		3.09
Total allowance for loan and lease losses	153,962		0.90		164,169		1.00
Other credit loss reserves:
Reserves for unfunded commitments	840		N.A.		943		N.A.
Total credit loss reserves	$	154,802	0.90		$	165,112	1.01

N.A. Not Applicable.

At September 30, 2015, the allowance as a percent of total loans and leases decreased to 0.90%, compared with 1.00% at December 31, 2014. The decrease was driven primarily by reduced reserves in the consumer real estate portfolio resulting from improved home values.

Other Real Estate Owned and Repossessed and Returned Assets  Other real estate owned and repossessed and returned assets are summarized in the following table.

(In thousands)	At September 30, 2015		At December 31, 2014
Other real estate owned:(1)
Consumer real estate	$	45,429	$	44,932
Commercial real estate	13,155		20,718
Total other real estate owned	58,584		65,650
Repossessed and returned assets	8,073		3,525
Total other real estate owned and repossessed and returned assets	$	66,657	$	69,175

(1)  Includes properties owned and foreclosed properties subject to redemption.

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Total consumer real estate properties reported in other real estate owned included 290 owned properties and 128 foreclosed properties subject to redemption at September 30, 2015, compared with 277 owned properties and 146 foreclosed properties subject to redemption at December 31, 2014. The increase in owned properties from December 31, 2014 resulted from the addition of 455 properties, partially offset by sales of 442 properties. The average length of time of consumer real estate properties sold during the third quarter of 2015 and 2014 was approximately 5.9 months and 5.6 months, respectively, from the date the properties were listed for sale. Consumer real estate loans in process of foreclosure were $46.3 million and $59.3 million at September 30, 2015 and December 31, 2014, respectively.

The changes in the amount of other real estate owned for the third quarter and first nine months of 2015 are summarized in the following tables.

	At or For the Three Months Ended September 30, 2015
(In thousands)	Consumer			Commercial			Total
Balance, beginning of period	$	44,336		$	13,671		$	58,007
Transferred in, net of charge-offs	15,087			—			15,087
Sales	(13,103		)	(339		)	(13,442		)
Write-downs	(2,640		)	(228		)	(2,868		)
Other, net	1,749			51			1,800
Balance, end of period	$	45,429		$	13,155		$	58,584

	At or For the Nine Months Ended September 30, 2015
(In thousands)	Consumer			Commercial			Total
Balance, beginning of period	$	44,932		$	20,718		$	65,650
Transferred in, net of charge-offs	45,713			246			45,959
Sales	(41,295		)	(4,710		)	(46,005		)
Write-downs	(7,226		)	(3,069		)	(10,295		)
Other, net	3,305			(30		)	3,275
Balance, end of period	$	45,429		$	13,155		$	58,584

Liquidity Management Deposits are the primary source of TCF's funds for use in lending and for other general business purposes. In addition to deposits, TCF derives funds from loan and lease repayments, loan sales and securitizations and borrowings. Lending activities, such as loan originations and purchases and equipment purchases for lease financing, are the primary uses of TCF's funds.

TCF Bank had $444.5 million and $767.0 million of net liquidity qualifying interest-bearing deposits at the Federal Reserve Bank at September 30, 2015 and December 31, 2014, respectively. Interest-bearing deposits held at the Federal Reserve Bank and unencumbered securities were $1.2 billion and $1.4 billion at September 30, 2015 and December 31, 2014, respectively.

The primary source of funding for TCF Commercial Finance Canada, Inc. ("TCFCFC") is a line of credit with TCF Bank. TCFCFC also maintains a $20.0 million Canadian dollar-denominated line of credit facility with a counterparty, which is guaranteed by TCF Bank. At September 30, 2015, TCFCFC had $5.3 million (USD) outstanding under the line of credit with the counterparty.

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Deposits  Deposits totaled $16.1 billion at September 30, 2015, an increase of $0.6 billion, or 3.9%, from December 31, 2014, primarily due to special campaigns for certificates of deposit and money market accounts.

Checking, savings and certain money market deposits are an important source of low interest cost funds for TCF. The average balance of these types of deposits for the third quarter of 2015 was $10.0 billion, a decrease of $0.8 billion from the $10.7 billion average balance for the third quarter of 2014. These deposits comprised 62.4% of total average deposits for the third quarter of 2015, compared with 70.8% of total average deposits for the third quarter of 2014.

Certificates of deposit totaled $3.6 billion at September 30, 2015, compared with $3.0 billion at December 31, 2014.

Non-interest bearing checking accounts represented 18.8% of total deposits at September 30, 2015, compared with 18.3% at December 31, 2014. TCF's weighted-average rate for deposits, including non-interest bearing deposits, was 0.29% at September 30, 2015, compared with 0.26% at December 31, 2014. The increase was primarily due to increased average rates resulting from promotions for money market accounts and certificates of deposit.

Borrowings  Borrowings totaled $1.2 billion at both September 30, 2015 and December 31, 2014. Historically, TCF has borrowed primarily from the Federal Home Loan Bank ("FHLB") of Des Moines, institutional sources under repurchase agreements and other sources. At September 30, 2015, TCF had $2.5 billion of unused, secured borrowing capacity at the FHLB of Des Moines.

On February 27, 2015, TCF Bank issued $150.0 million of subordinated notes due February 27, 2025 with a fixed-rate coupon of 4.60% per annum. Simultaneously, TCF Bank entered into an interest rate swap agreement designated as a fair value hedge. The effect of the interest rate swap is to effectively convert the fixed-rate on the subordinated notes to a floating interest rate based on the three-month London InterBank Offered Rate ("LIBOR") plus a fixed number of basis points on the notional amount.

See Note 7 and Note 8 of Notes to Consolidated Financial Statements, Short-term Borrowings and Long-term Borrowings, respectively, for additional information regarding TCF's borrowings.

Capital Management  TCF is committed to managing capital to maintain protection for depositors and creditors. TCF employs a variety of capital management tools to achieve its capital goals, including, but not limited to, dividends, public offerings of preferred and common stock, common stock repurchases and the issuance or redemption of subordinated debt and other capital instruments. TCF maintains a Capital Planning and Dividend Policy which applies to TCF Financial and incorporates TCF Bank's Capital Planning and Dividend Policy. These policies ensure that capital strategy actions, including the addition of new capital, if needed, or the declaration of preferred stock, common stock or bank dividends are prudent, efficient and provide value to TCF's stockholders, while ensuring that past and prospective earnings retention is consistent with TCF's capital needs, asset quality and overall financial condition. TCF manages its capital levels to exceed all regulatory capital requirements for well-capitalized banks and bank holding companies. At September 30, 2015 and December 31, 2014, regulatory capital for TCF and TCF Bank exceeded their respective regulatory capital requirements. See Note 9 of Notes to Consolidated Financial Statements, Regulatory Capital Requirements.

Preferred Stock  At September 30, 2015, there were 6,900,000 depositary shares outstanding, each representing a 1/1,000th interest in a share of the Series A Non-Cumulative Perpetual Preferred Stock of TCF Financial Corporation, par value $.01 per share, with a liquidation preference of $25,000 per share (equivalent to $25 per depositary share)("Series A Preferred Stock"). Dividends are payable on the Series A Preferred Stock if, as and when declared by TCF's Board of Directors on a non-cumulative basis on March 1, June 1, September 1 and December 1 of each year at a per annum rate of 7.5%. At September 30, 2015, there were 4,000,000 shares outstanding of 6.45% Series B Non-Cumulative Perpetual Preferred Stock of TCF Financial Corporation, par value $.01 per share, with a liquidation preference of $25 per share ("Series B Preferred Stock"). Dividends are payable on the Series B Preferred Stock if, as and when declared by TCF's Board of Directors on a non-cumulative basis on March 1, June 1, September 1 and December 1 of each year at a per annum rate of 6.45%.

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Equity  Total equity at September 30, 2015 was $2.3 billion, or 11.3% of total assets, compared with $2.1 billion, or 11.0% of total assets, at December 31, 2014. Dividends to common stockholders on a per share basis totaled 5 cents for the quarters ended September 30, 2015 and 2014. TCF's common dividend payout ratio was 17.2% for both the quarters ended September 30, 2015 and 2014. On October 19, 2015, TCF's Board of Directors declared a regular quarterly cash dividend of 7.5 cents per common share, an increase of 50%, payable on December 1, 2015, to stockholders of record at the close of business on November 13, 2015. TCF Financial's primary funding sources for dividends are earnings and dividends received from TCF Bank.

At September 30, 2015, TCF had 5.4 million shares remaining in its stock repurchase program authorized by its Board of Directors, which has no expiration. Prior consultation with the Federal Reserve is required before TCF could repurchase any shares of its common stock.

Tangible common equity at September 30, 2015 was $1.8 billion, or 8.86% of total tangible assets, compared with $1.6 billion, or 8.50% of total tangible assets, at December 31, 2014. Tangible common equity is not a financial measure recognized under generally accepted accounting principles in the United States ("GAAP") (i.e., non-GAAP). Tangible common equity represents total equity less preferred stock, goodwill, other intangible assets and non-controlling interest in subsidiaries. Tangible assets represent total assets less goodwill and other intangible assets. When evaluating capital adequacy and utilization, management considers financial measures such as tangible common equity to tangible assets. This non-GAAP financial measure is viewed by management as a useful indicator of capital levels available to withstand unexpected market or economic conditions and also provide investors, regulators and other users with information to be viewed in relation to other banking institutions.

The following table includes reconciliations of the non-GAAP financial measures of tangible common equity and tangible assets to the GAAP measures of total equity and total assets, respectively.

(Dollars in thousands)	At September 30, 2015			At December 31, 2014
Computation of tangible common equity to tangible assets:
Total equity	$	2,273,147		$	2,135,364
Less: Non-controlling interest in subsidiaries	18,500			13,715
Total TCF Financial Corporation stockholders' equity	2,254,647			2,121,649
Less:
Preferred stock	263,240			263,240
Goodwill	225,640			225,640
Other intangibles	3,518			4,641
Tangible common equity	$	1,762,249		$	1,628,128
Total assets	$	20,125,936		$	19,394,611
Less:
Goodwill	225,640			225,640
Other intangibles	3,518			4,641
Tangible assets	$	19,896,778		$	19,164,330
Tangible common equity to tangible assets	8.86		%	8.50		%

Recent Accounting Developments

In September 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments, which amends the rules related to provisional amounts recognized at the acquisition date of a business combination. The adoption of this ASU will be required on a prospective basis beginning with TCF’s Quarterly Report on Form 10-Q for the quarter ending March 31, 2016. Early adoption is allowed. The adoption of this ASU will not have a material impact on our consolidated financial statements.

In August 2015, the FASB issued ASU No. 2015-15, Interest - Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements, which amends certain SEC content concerning the presentation and subsequent measurement of debt issuance costs related to line-of-credit arrangements. This ASU became effective upon issuance and was adopted in the third quarter of 2015. The adoption of this ASU did not have an impact on our consolidated financial statements.

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In July 2015, the FASB issued ASU No. 2015-12, Plan Accounting: Defined Benefit Pension Plans (Topic 960), Defined Contribution Pension Plans (Topic 962), Health and Welfare Benefit Plans (Topic 965): (Part I) Fully Benefit-Responsive Investment Contracts, (Part II) Plan Investment Disclosures, (Part III) Measurement Date Practical Expedient (consensuses of the FASB Emerging Issues Task Force), which simplifies the measurement, presentation and related disclosures for fully benefit-responsive investment contracts and disclosures about plan investments and allows a plan with a fiscal year end that does not coincide with the end of a calendar month to make an accounting policy election to measure its investments and investment-related accounts using the month end closest to its fiscal year end. The adoption of this ASU will be required on a retrospective basis for Part I and II and on a prospective basis for Part III beginning with the plan’s financial statements for the year ending December 31, 2016. Early adoption is allowed. The adoption of this ASU will not have a material impact on our consolidated financial statements.

In May 2015, the FASB issued ASU No. 2015-07, Fair Value Measurement (Topic 820):Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent), which eliminates the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient pursuant to Accounting Standards Codification 820, Fair Value Measurement. The adoption of this ASU will be required on a retrospective basis beginning with TCF's Quarterly Report on Form 10-Q for the quarter ending March 31, 2016. Early adoption is allowed. The adoption of this ASU is not expected to have a material impact on our consolidated financial statements.

In April 2015, the FASB issued ASU No. 2015-05,Intangibles-Goodwill and Other - Internal-Use Software (Subtopic 350-40); Customer's Accounting for Fees Paid in a Cloud Computing Arrangement, which updates guidance about whether a cloud computing arrangement includes a software license and how to account for those software licenses. This ASU was adopted by TCF on September 1, 2015. The adoption of this ASU did not have an impact on our consolidated financial statements.

In April 2015, the FASB issued ASU No. 2015-04,Compensation-Retirement Benefits (Topic 715): Practical Expedient for the Measurement Date of an Employer's Defined Benefit Obligation and Plan Assets, which allows employers with fiscal year ends that do not coincide with a calendar month end to make an accounting policy election to measure defined benefit plan assets and obligations as of the end of the month closest to their fiscal year ends. The adoption of this ASU will be required on a prospective basis beginning with TCF's Quarterly Report on Form 10-Q for the quarter ending March 31, 2016. Early adoption is allowed. The adoption of this ASU will not have a material impact on our consolidated financial statements.

In April 2015, the FASB issued ASU No. 2015-03, Interest-Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs, which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from that debt liability, consistent with the presentation of a debt discount. The adoption of this ASU will be required on a retrospective basis beginning with TCF's Quarterly Report on Form 10-Q for the quarter ending March 31, 2016. Early adoption is allowed. The adoption of this ASU is not expected to have a material impact on our consolidated financial statements.

In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 820): Amendments to the Consolidation Analysis, which changes the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities. The adoption of this ASU will be required on a retrospective or modified retrospective basis beginning with TCF's Quarterly Report on Form 10-Q for the quarter ending March 31, 2016. The adoption of this ASU is not expected to have a material impact on our consolidated financial statements.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which requires revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The adoption of this ASU will be required, using one of two retrospective application methods. In August, 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which delays the effective date of the new revenue recognition requirements in ASU No. 2014-09 by one-year. The adoption of this ASU is now required beginning with TCF’s Quarterly Report on Form 10-Q for the quarter ending March 31, 2018. Management is currently evaluating the potential impact of this guidance on our consolidated financial statements.

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Legislative and Regulatory Developments

Federal and state legislation impose numerous legal and regulatory requirements on financial institutions. Future legislative or regulatory change, or changes in enforcement practices or court rulings, may have a dramatic and potentially adverse impact on TCF.

Cautionary Statements for Purposes of the Safe Harbor Provisions of the Securities Litigation Reform Act

Any statements contained in this Quarterly Report on Form 10-Q regarding the outlook for the Company's businesses and their respective markets, such as projections of future performance, guidance, statements of the Company's plans and objectives, forecasts of market trends and other matters, are forward-looking statements based on the Company's assumptions and beliefs. Such statements may be identified by such words or phrases as "will likely result," "are expected to," "will continue," "outlook," "will benefit," "is anticipated," "estimate," "project," "management believes" or similar expressions. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those discussed in such statements and no assurance can be given that the results in any forward-looking statement will be achieved. For these statements, TCF claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. Any forward-looking statement speaks only as of the date on which it is made, and we disclaim any obligation to subsequently revise any forward-looking statement to reflect events or circumstances after such date or to reflect the occurrence of anticipated or unanticipated events.

Certain factors could cause the Company's future results to differ materially from those expressed or implied in any forward-looking statements contained herein. These factors include the factors discussed in Part I, Item 1A of the Company's Annual Report on Form 10-K for the year ended December 31, 2014, under the heading "Risk Factors," the factors discussed below and any other cautionary statements, written or oral, which may be made or referred to in connection with any such forward-looking statements. Since it is not possible to foresee all such factors, these factors should not be considered as complete or exhaustive.

Adverse Economic or Business Conditions; Competitive Conditions; Credit and Other Risks.  Deterioration in general economic and banking industry conditions, including those arising from government shutdowns, defaults, anticipated defaults or rating agency downgrades of sovereign debt (including debt of the U.S.), or increases in unemployment; adverse economic, business and competitive developments such as shrinking interest margins, reduced demand for financial services and loan and lease products, deposit outflows, increased deposit costs due to competition for deposit growth and evolving payment system developments, deposit account attrition or an inability to increase the number of deposit accounts; customers completing financial transactions without using a bank; adverse changes in credit quality and other risks posed by TCF's loan, lease, investment, securities held to maturity and securities available for sale portfolios, including declines in commercial or residential real estate values, changes in the allowance for loan and lease losses dictated by new market conditions or regulatory requirements, or the inability of home equity line borrowers to make increased payments caused by increased interest rates or amortization of principal; deviations from estimates of prepayment rates and fluctuations in interest rates that result in decreases in the value of assets such as interest-only strips that arise in connection with TCF's loan sales activity; interest rate risks resulting from fluctuations in prevailing interest rates or other factors that result in a mismatch between yields earned on TCF's interest-earning assets and the rates paid on its deposits and borrowings; foreign currency exchange risks; counterparty risk, including the risk of defaults by our counterparties or diminished availability of counterparties who satisfy our credit quality requirements; decreases in demand for the types of equipment that TCF leases or finances; the effect of any negative publicity.

56

Legislative and Regulatory Requirements.  New consumer protection and supervisory requirements and regulations, including those resulting from action by the Consumer Financial Protection Bureau and changes in the scope of Federal preemption of state laws that could be applied to national banks and their subsidiaries; the imposition of requirements that adversely impact TCF's deposit, lending, loan collection and other business activities such as mortgage foreclosure moratorium laws, further regulation of financial institution campus banking programs, use by municipalities of eminent domain on property securing troubled residential mortgage loans, or imposition of underwriting or other limitations that impact the ability to offer certain variable-rate products; changes affecting customer account charges and fee income, including changes to interchange rates; regulatory actions or changes in customer opt-in preferences with respect to overdrafts, which may have an adverse impact on TCF's fee revenue; changes to bankruptcy laws which would result in the loss of all or part of TCF's security interest due to collateral value declines; deficiencies in TCF's compliance under the Bank Secrecy Act in past or future periods, which may result in regulatory enforcement action including monetary penalties; increased health care costs resulting from Federal health care reform; regulatory criticism and resulting enforcement actions or other adverse consequences such as increased capital requirements, higher deposit insurance assessments or monetary damages or penalties; heightened regulatory practices, requirements or expectations, including, but not limited to, requirements related to enterprise risk management, the Bank Secrecy Act and anti-money laundering compliance activity.

Earnings/Capital Risks and Constraints, Liquidity Risks.  Limitations on TCF's ability to pay dividends or to increase dividends because of financial performance deterioration, regulatory restrictions or limitations; increased deposit insurance premiums, special assessments or other costs related to adverse conditions in the banking industry; the impact on banks of regulatory reform, including additional capital, leverage, liquidity and risk management requirements or changes in the composition of qualifying regulatory capital; adverse changes in securities markets directly or indirectly affecting TCF's ability to sell assets or to fund its operations; diminished unsecured borrowing capacity resulting from TCF credit rating downgrades or unfavorable conditions in the credit markets that restrict or limit various funding sources; costs associated with new regulatory requirements or interpretive guidance relating to liquidity; uncertainties relating to future retail deposit account changes, including limitations on TCF's ability to predict customer behavior and the impact on TCF's fee revenues.

Branching Risk; Growth Risks.  Adverse developments affecting TCF's supermarket banking relationships or any of the supermarket chains in which TCF maintains supermarket branches; costs related to closing underperforming branches; slower than anticipated growth in existing or acquired businesses; inability to successfully execute on TCF's growth strategy through acquisitions or cross-selling opportunities; failure to expand or diversify TCF's balance sheet through new or expanded programs or opportunities; failure to successfully attract and retain new customers, including the failure to attract and retain manufacturers and dealers to expand the inventory finance business; failure to effectuate, and risks of claims related to, sales and securitizations of loans; risks related to new product additions and addition of distribution channels (or entry into new markets) for existing products.

Technological and Operational Matters.  Technological or operational difficulties, loss or theft of information, cyber-attacks and other security breaches, counterparty failures and the possibility that deposit account losses (fraudulent checks, etc.) may increase; failure to keep pace with technological change, including the failure to develop and maintain technology necessary to satisfy customer demands; ability to attract and retain employees given competitive conditions and the impact of consolidating facilities.

Litigation Risks.  Results of litigation or government enforcement actions, including class action litigation or enforcement actions concerning TCF's lending or deposit activities, including account opening/origination, servicing practices, fees or charges, or employment practices; and possible increases in indemnification obligations for certain litigation against Visa U.S.A. and potential reductions in card revenues resulting from such litigation or other litigation against Visa.

Accounting, Audit, Tax and Insurance Matters.  Changes in accounting standards or interpretations of existing standards; federal or state monetary, fiscal or tax policies, including adoption of state legislation that would increase state taxes; ineffective internal controls; adverse federal, state or foreign tax assessments or findings in tax audits; lack of or inadequate insurance coverage for claims against TCF; potential for claims and legal action related to TCF's fiduciary responsibilities.

57

Item 3. Quantitative and Qualitative Disclosures About Market Risk

TCF's results of operations depend to a large degree on its net interest income and its ability to manage interest rate risk. Although TCF manages other risks in the normal course of business, such as credit risk, liquidity risk, and operational risk, the Company considers interest rate risk to be one of its more significant market risks. A mismatch between maturities, interest rate sensitivities and prepayment characteristics of assets and liabilities results in interest rate risk. TCF, like most financial institutions, has material interest rate risk exposure to changes in both short-term and long-term interest rates, as well as variable interest rate indices (e.g., the prime rate or LIBOR).

TCF's management Asset & Liability Committee ("ALCO") manages TCF's interest rate risk based on interest rate expectations and other factors. The principal objective of TCF's management asset and liability activities is to provide maximum levels of net interest income and facilitate the funding needs of the Company, while maintaining acceptable levels of interest rate risk and liquidity risk.

Management utilizes net interest income simulation models to estimate the near-term effects of changing interest rates on its net interest income. Net interest income simulation involves forecasting net interest income under a variety of scenarios, including the level of interest rates, the shape of the yield curve and the spreads between market interest rates. Management exercises its best judgment in making assumptions regarding events that management can influence, such as non-contractual deposit repricings and events outside management's control, such as consumer behavior on loan and deposit activity and the effect that competition has on both loan and deposit pricing. These assumptions are subjective and, as a result, net interest income simulation results will differ from actual results due to the timing, magnitude and frequency of interest rate changes, changes in market conditions, consumer behavior and management strategies, among other factors. TCF performs various sensitivity analyses on assumptions of new loan spreads, prepayment rates, basis risk, deposit attrition and deposit repricing.

The following table presents changes in TCF's net interest income over a twelve month period if short- and long-term interest rates were to sustain an immediate increase of 100 basis points and 200 basis points. The impact of planned growth and new business activities is factored into the simulation model.

	Impact on Net Interest Income
(Dollars in millions)	September 30, 2015				December 31, 2014
Immediate Change in Interest Rates:
+200 basis points	$	90.5	11.1	%	$	73.6	8.9	%
+100 basis points	48.3		5.9		39.4		4.7

As of September 30, 2015, 54.5% of TCF's loan and lease balances are expected to reprice, amortize or prepay in the next 12 months and 62.4% of TCF's deposit balances are low cost or no cost deposits. The mix of assets repricing compared with low cost or no cost deposits should enable TCF to increase net interest income when interest rates rise.

Management also uses economic value of equity ("EVE") and interest rate gap analyses to measure risk in the balance sheet that might not be taken into account in the net interest income simulation analysis. Net interest income simulation highlights exposure over a relatively short time period, while EVE analysis incorporates all cash flows over the estimated remaining life of all balance sheet positions. The valuation of the balance sheet, at a point in time, is defined as the discounted present value of asset cash flows minus the discounted present value of liability cash flows. Interest rate gap is the difference between interest-earning assets and interest-bearing liabilities repricing within a given period and represents the net asset or liability sensitivity at a point in time.

58

Item 4. Controls and Procedures

Disclosure Controls and Procedures  The Company carried out an evaluation, under the supervision and with the participation of the Company's management, including the Company's Chief Executive Officer (Principal Executive Officer), Chief Financial Officer (Principal Financial Officer) and Chief Accounting Officer (Principal Accounting Officer), of the effectiveness of the design and operation of the Company's disclosure controls and procedures pursuant to Rules 13a-15 and 15d-15 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Based upon that evaluation, management concluded that the Company's disclosure controls and procedures were effective as of September 30, 2015.

Disclosure controls and procedures are designed to ensure that information required to be disclosed by TCF in reports filed or submitted under the Exchange Act are recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission ("SEC")'s rules and forms. Disclosure controls are also designed with the objective of ensuring that such information is accumulated and communicated to the Company's management, including the Chief Executive Officer (Principal Executive Officer), Chief Financial Officer (Principal Financial Officer) and Chief Accounting Officer (Principal Accounting Officer), as appropriate, to allow for timely decisions regarding required disclosure. TCF's disclosure controls also include internal controls that are designed to provide reasonable assurance that transactions are properly authorized, assets are safeguarded against unauthorized or improper use and that transactions are properly recorded and reported.

Changes in Internal Control Over Financial Reporting  There were no changes to TCF's internal control over financial reporting (as defined in Rule 13a-15(f) of the Exchange Act) during the quarter ended September 30, 2015, that materially affected, or are reasonably likely to materially affect, TCF's internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, TCF is a party to legal proceedings arising out of its lending, leasing and deposit operations, including foreclosure proceedings and other collection actions as part of its lending and leasing collections activities. TCF may also be subject to regulatory examinations and enforcement actions brought by federal regulators, including the SEC, the Federal Reserve, the Office of the Comptroller of the Currency and the Consumer Financial Protection Bureau ("CFPB"), and TCF's regulatory authorities may impose sanctions on TCF for failures related to regulatory compliance. From time to time, borrowers and other customers, and employees and former employees, have also brought actions against TCF, in some cases claiming substantial damages. TCF and other financial services companies are subject to the risk of class action litigation. Litigation is often unpredictable and the actual results of litigation cannot be determined, and therefore the ultimate resolution of a matter and the possible range of loss associated with certain potential outcomes cannot be established. Except as discussed below, based on our current understanding of TCF's pending legal proceedings, management does not believe that judgments or settlements arising from pending or threatened legal matters, individually or in the aggregate, would have a material adverse effect on the consolidated financial position, operating results or cash flows of TCF.

On October 29, 2015, TCF received a Notice and Opportunity to Respond and Advise letter ("NORA Letter") from the CFPB notifying TCF that the CFPB’s Office of Enforcement is considering recommending that the CFPB take legal action against TCF related to compliance with laws relating to unfair, deceptive and abusive acts and practices and Regulation E, §1005.17, in connection with TCF’s practices in administering checking account overdraft program "opt-in" requirements. The purpose of a NORA Letter is to ensure that potential subjects of enforcement actions have the opportunity to present their positions to the CFPB before an enforcement action is recommended or commenced. The NORA Letter offers TCF the opportunity to make a written statement setting forth any reasons of law or policy why TCF believes that the CFPB should not take action against it, which TCF intends to do. We are currently unable to predict the ultimate timing or outcome of this matter. There can be no assurance that the CFPB will not utilize its enforcement authority through settlement, administrative proceedings or litigation and seek remediation, disgorgement, penalties, other monetary relief, injunctive relief or changes to TCF’s business practices or operations, which could have a material adverse effect on TCF.

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Item 1A. Risk Factors

There were no material changes in risk factors for TCF in the quarter covered by this report. You should carefully consider the risks and risk factors included under Item 1A of the Company's Annual Report on Form 10-K for the year ended December 31, 2014. TCF's business, financial condition or results of operations could be materially adversely affected by any of these risks.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table summarizes share repurchase activity for the quarter ended September 30, 2015.

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan	Maximum Number of Shares that May Yet be Purchased Under the Plan
July 1 to July 31, 2015
Share repurchase program(1)	—	$	—	—	5,384,130
Employee transactions(2)	330	$	16.43	N.A.	N.A.
August 1 to August 31, 2015
Share repurchase program(1)	—	$	—	—	5,384,130
Employee transactions(2)	4,034	$	16.43	N.A.	N.A.
September 1 to September 30, 2015
Share repurchase program(1)	—	$	—	—	5,384,130
Employee transactions(2)	—	$	—	N.A.	N.A.
Total
Share repurchase program(1)	—	$	—	—	5,384,130
Employee transactions(2)	4,364	$	16.43	N.A.	N.A.

 N.A. Not Applicable

(1) The current share repurchase authorization was approved by the Board of Directors on April 14, 2007 and was announced in a press release dated April 16, 2007. The authorization was for a repurchase of up to an additional 5% of TCF's common stock outstanding at the time of the authorization, or 6.5 million shares. TCF has not repurchased shares since October 2007. Future repurchases will be based upon capital levels, growth expectations and market opportunities and may be subject to regulatory approval. The ability to repurchase shares in the future may be adversely affected by new legislation or regulations or by changes in regulatory policies. This authorization does not have an expiration date.

(2) Represents restricted stock withheld pursuant to the terms of awards granted on or prior to April 22, 2015 under the TCF Financial Incentive Stock Program to offset tax withholding obligations that occur upon vesting and release of restricted stock. The TCF Financial Incentive Stock Program provides that the value of shares withheld shall be the average of the high and low prices of common stock of TCF Financial Corporation on the date the relevant transaction occurs.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

Item 6. Exhibits

See Index to Exhibits on page 62 of this report.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

TCF FINANCIAL CORPORATION

/s/ William A. Cooper

William A. Cooper, Chairman and

Chief Executive Officer

(Principal Executive Officer)

/s/ Michael S. Jones

Michael S. Jones, Executive Vice President and

Chief Financial Officer

(Principal Financial Officer)

/s/ Susan D. Bode

Susan D. Bode, Senior Vice President and

Chief Accounting Officer

(Principal Accounting Officer)

Dated: November 4, 2015

61

TCF FINANCIAL CORPORATION

INDEX TO EXHIBITS

FOR FORM 10-Q

Exhibit Number	Description
31.1#	Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2#	Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1#	Certification of the Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2#	Certification of the Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101#	Financial statements from the Quarterly Report on Form 10-Q of the Company for the period ended September 30, 2015, formatted in XBRL: (i) the Consolidated Statements of Financial Condition, (ii) the Consolidated Statements of Income, (iii) the Consolidated Statements of Comprehensive Income, (iv) the Consolidated Statements of Equity, (v) the Consolidated Statements of Cash Flows and (vi) the Notes to Consolidated Financial Statements

#  Filed herein

62

EX-31.1

Exhibit 31.1

CERTIFICATION

I, William A. Cooper, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of TCF Financial Corporation for the quarter ended September 30, 2015;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 4, 2015

/s/ William A. Cooper

William A. Cooper

Chairman and Chief Executive Officer

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Michael S. Jones, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of TCF Financial Corporation for the quarter ended September 30, 2015;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 4, 2015

/s/ Michael S. Jones

Michael S. Jones

Executive Vice President and Chief Financial Officer

(Principal Financial Officer)

EX-32.1

Exhibit 32.1

TCF FINANCIAL CORPORATION

STATEMENT PURSUANT TO 18 U.S.C. §1350

I, William A. Cooper, Chairman and Chief Executive Officer of TCF Financial Corporation, a Delaware corporation (the “Company”), hereby certify as follows:

1. This statement is provided pursuant to 18 U.S.C. § 1350 in connection with the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2015 (the “Periodic Report”);

2. The Periodic Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

3. The information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods indicated therein.

Date: November 4, 2015

/s/ William A. Cooper

William A. Cooper

Chairman and Chief Executive Officer

(Principal Executive Officer)

* A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to TCF Financial Corporation and will be retained by TCF Financial Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

TCF FINANCIAL CORPORATION

STATEMENT PURSUANT TO 18 U.S.C. §1350

I, Michael S. Jones, Executive Vice President and Chief Financial Officer of TCF Financial Corporation, a Delaware corporation (the “Company”), hereby certify as follows:

1. This statement is provided pursuant to 18 U.S.C. § 1350 in connection with the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2015 (the “Periodic Report”);

2. The Periodic Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

3. The information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods indicated therein.

Date: November 4, 2015

/s/ Michael S. Jones

Michael S. Jones

Executive Vice President and

Chief Financial Officer

(Principal Financial Officer)

* A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to TCF Financial Corporation and will be retained by TCF Financial Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cash and Due from Banks (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Cash and Cash Equivalents [Abstract]
Reserve in cash on hand or at the Federal Reserve as required by Federal Reserve regulations	$ 93.3	$ 98.7
Total restricted cash balance	69.7	67.8
Interest-bearing Deposits in Banks and Other Financial Institutions	$ 521.2	$ 842.1

XML

Deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Weighted-Average Rate
Interest bearing	0.02%	0.04%
Total checking	0.01%	0.02%
Savings	0.07%	0.15%
Money market	0.63%	0.54%
Certificates of deposit	0.88%	0.78%
Total deposits	0.29%	0.26%
Deposits
Non-interest bearing	$ 3,016,571	$ 2,832,526
Interest bearing	2,361,453	2,362,717
Total checking	5,378,024	5,195,243
Savings	4,774,766	5,212,320
Money market	2,293,390	1,993,130
Certificates of deposit	3,612,253	3,049,189
Total deposits	$ 16,058,433	$ 15,449,882
% of Total
Non-interest bearing	18.80%	18.30%
Interest bearing	14.70%	15.30%
Total checking	33.50%	33.60%
Savings	29.70%	33.70%
Money market	14.30%	13.00%
Certificates of deposit	22.50%	19.70%
Total deposits	100.00%	100.00%
Denominations $100 Thousand or Greater
0-3 months	$ 229,752
4-6 months	318,684
7-12 months	683,865
13-24 months	432,510
Over 24 months	58,169
Total	1,722,980
Denominations Less Than $100 Thousand
0-3 months	315,023
4-6 months	387,072
7-12 months	710,942
13-24 months	430,804
Over 24 months	45,432
Total	1,889,273
Total
0-3 months	544,775
4-6 months	705,756
7-12 months	1,394,807
13-24 months	863,314
Over 24 months	103,601
Total	$ 3,612,253	$ 3,049,189

XML

Allowance for Loan and Lease Losses and Credit Quality Information (Details 2) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Allowance for loan and lease losses:
Collectively evaluated for impairment	$ 124,668		$ 128,485
Individually evaluated for impairment	29,294		35,684
Total	153,962	$ 156,115	164,169	$ 222,658	$ 236,081	$ 252,230
Loans and leases outstanding:
Collectively evaluated for impairment	16,881,815		16,041,606
Individually evaluated for impairment	319,142		359,783
Total loans and leases	17,201,046		16,401,646
Receivables Acquired with Deteriorated Credit Quality
Loans and leases outstanding:
Loans acquired with deteriorated credit quality	89		257
Consumer Real Estate
Allowance for loan and lease losses:
Collectively evaluated for impairment	45,884		57,167
Individually evaluated for impairment	24,445		28,194
Total	70,329	74,687	85,361	145,125	161,349	176,030
Loans and leases outstanding:
Collectively evaluated for impairment	5,393,919		5,462,005
Individually evaluated for impairment	219,795		220,359
Total loans and leases	5,613,714		5,682,364
Consumer Real Estate | Receivables Acquired with Deteriorated Credit Quality
Loans and leases outstanding:
Loans acquired with deteriorated credit quality	0		0
Commercial
Allowance for loan and lease losses:
Collectively evaluated for impairment	29,497		27,594
Individually evaluated for impairment	509		3,773
Total	30,006	30,205	31,367	33,290	31,361	37,467
Loans and leases outstanding:
Collectively evaluated for impairment	3,035,004		3,038,378
Individually evaluated for impairment	77,321		119,287
Total loans and leases	3,112,325		3,157,665
Commercial | Receivables Acquired with Deteriorated Credit Quality
Loans and leases outstanding:
Loans acquired with deteriorated credit quality	0		0
Leasing and Equipment Finance
Allowance for loan and lease losses:
Collectively evaluated for impairment	16,363		16,310
Individually evaluated for impairment	1,814		2,136
Total	18,177	17,669	18,446	17,600	19,184	18,733
Loans and leases outstanding:
Collectively evaluated for impairment	3,861,455		3,731,420
Individually evaluated for impairment	12,076		13,763
Total loans and leases	3,873,581		3,745,322
Leasing and Equipment Finance | Receivables Acquired with Deteriorated Credit Quality
Loans and leases outstanding:
Loans acquired with deteriorated credit quality	50		139
Inventory Finance
Allowance for loan and lease losses:
Collectively evaluated for impairment	10,910		9,627
Individually evaluated for impairment	211		393
Total	11,121	10,879	10,020	9,556	9,539	8,592
Loans and leases outstanding:
Collectively evaluated for impairment	2,151,551		1,874,481
Individually evaluated for impairment	1,834		2,609
Total loans and leases	2,153,385		1,877,090
Inventory Finance | Receivables Acquired with Deteriorated Credit Quality
Loans and leases outstanding:
Loans acquired with deteriorated credit quality	0		0
Auto Finance
Allowance for loan and lease losses:
Collectively evaluated for impairment	21,410		17,046
Individually evaluated for impairment	2,312		1,184
Total	23,722	22,061	18,230	16,308	13,865	10,623
Loans and leases outstanding:
Collectively evaluated for impairment	2,419,230		1,911,267
Individually evaluated for impairment	8,098		3,676
Total loans and leases	2,427,367		1,915,061
Auto Finance | Receivables Acquired with Deteriorated Credit Quality
Loans and leases outstanding:
Loans acquired with deteriorated credit quality	39		118
Other
Allowance for loan and lease losses:
Collectively evaluated for impairment	604		741
Individually evaluated for impairment	3		4
Total	607	$ 614	745	$ 779	$ 783	$ 785
Loans and leases outstanding:
Collectively evaluated for impairment	20,656		24,055
Individually evaluated for impairment	18		89
Total loans and leases	20,674		24,144
Other | Receivables Acquired with Deteriorated Credit Quality
Loans and leases outstanding:
Loans acquired with deteriorated credit quality	$ 0		$ 0

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Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Revenue (expense) from operations:
Net interest income	$ 205,270	$ 204,180	$ 614,719	$ 611,555
Provision for credit losses	10,018	15,739	35,337	40,140
Non-interest income	112,252	116,076	326,339	323,499
Non-interest expense	222,284	219,688	672,160	650,019
Income tax expense (benefit)	30,528	30,791	82,258	88,755
Income after income tax expense	54,692	54,038	151,303	156,140
Income attributable to non-controlling interest	2,117	1,721	6,672	5,941
Preferred stock dividends	4,847	4,847	14,541	14,541
Net income available to common stockholders	47,728	47,470	130,090	135,658
Total assets	20,125,936	19,022,103	20,125,936	19,022,103	$ 19,394,611
Revenues from external customers:
Interest income	223,604	219,703	666,479	654,421
Non-interest income	112,252	116,076	326,339	323,499
Total	335,856	335,779	992,818	977,920
Operating | Lending
Revenue (expense) from operations:
Net interest income	155,130	149,048	464,478	443,245
Provision for credit losses	9,101	14,593	33,680	37,950
Non-interest income	56,439	58,432	165,528	156,921
Non-interest expense	115,503	107,892	342,533	318,733
Income tax expense (benefit)	31,599	31,525	91,344	89,275
Income after income tax expense	55,366	53,470	162,449	154,208
Income attributable to non-controlling interest	2,117	1,721	6,672	5,941
Preferred stock dividends	0	0	0	0
Net income available to common stockholders	53,249	51,749	155,777	148,267
Total assets	17,642,476	16,821,067	17,642,476	16,821,067
Revenues from external customers:
Interest income	216,777	214,070	647,878	637,851
Non-interest income	56,439	58,432	165,528	156,921
Total	273,216	272,502	813,406	794,772
Operating | Funding
Revenue (expense) from operations:
Net interest income	51,356	56,017	153,073	170,657
Provision for credit losses	917	1,146	1,657	2,190
Non-interest income	55,819	57,453	158,922	165,082
Non-interest expense	106,353	111,749	326,727	328,557
Income tax expense (benefit)	(7)	236	(5,949)	1,938
Income after income tax expense	(88)	339	(10,440)	3,054
Income attributable to non-controlling interest	0	0	0	0
Preferred stock dividends	0	0	0	0
Net income available to common stockholders	(88)	339	(10,440)	3,054
Total assets	7,024,906	5,894,540	7,024,906	5,894,540
Revenues from external customers:
Interest income	6,827	5,633	18,601	16,570
Non-interest income	55,807	57,438	158,884	165,037
Total	62,634	63,071	177,485	181,607
Operating | Support Services
Revenue (expense) from operations:
Net interest income	14	44	85	98
Provision for credit losses	0	0	0	0
Non-interest income	28,063	34,232	88,424	102,013
Non-interest expense	28,497	34,088	89,435	103,246
Income tax expense (benefit)	166	(41)	(220)	(13)
Income after income tax expense	(586)	229	(706)	(1,122)
Income attributable to non-controlling interest	0	0	0	0
Preferred stock dividends	4,847	4,847	14,541	14,541
Net income available to common stockholders	(5,433)	(4,618)	(15,247)	(15,663)
Total assets	195,747	178,781	195,747	178,781
Revenues from external customers:
Interest income	0	0	0	0
Non-interest income	6	206	1,927	1,541
Total	6	206	1,927	1,541
Eliminations
Revenue (expense) from operations:
Net interest income	(1,230)	(929)	(2,917)	(2,445)
Provision for credit losses	0	0	0	0
Non-interest income	(28,069)	(34,041)	(86,535)	(100,517)
Non-interest expense	(28,069)	(34,041)	(86,535)	(100,517)
Income tax expense (benefit)	(1,230)	(929)	(2,917)	(2,445)
Income after income tax expense	0	0	0	0
Income attributable to non-controlling interest	0	0	0	0
Preferred stock dividends	0	0	0	0
Net income available to common stockholders	0	0	0	0
Total assets	(4,737,193)	(3,872,285)	(4,737,193)	(3,872,285)
Revenues from external customers:
Interest income	0	0	0	0
Non-interest income	0	0	0	0
Total	$ 0	$ 0	$ 0	$ 0

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Short-term Borrowings (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Short-term Borrowings
Short-term borrowings	$ 36,509	$ 4,425
Interest rate at period end (as a percent)	0.29%	0.10%
Average daily balances of short-term borrowings	$ 15,606	$ 83,673
Average daily interest rate (as a percent)	0.40%	0.31%
Mortgage-backed securities
Short-term Borrowings
Fair value of short-term debt	$ 42,400	$ 8,200
Federal Home Loan Bank advances
Short-term Borrowings
Average daily balances of short-term borrowings	$ 0	$ 74,385
Average daily interest rate (as a percent)	0.00%	0.26%
Maximum month-end balances of short-term borrowings	$ 0	$ 250,000
Federal funds purchased
Short-term Borrowings
Average daily balances of short-term borrowings	$ 169	$ 375
Average daily interest rate (as a percent)	0.43%	0.40%
Securities sold under repurchase agreements
Short-term Borrowings
Short-term borrowings	$ 31,251	$ 4,425
Interest rate at period end (as a percent)	0.04%	0.10%
Average daily balances of short-term borrowings	$ 12,866	$ 5,956
Average daily interest rate (as a percent)	0.09%	0.18%
Maximum month-end balances of short-term borrowings	$ 62,995	$ 4,425
Securities sold under repurchase agreements | Mortgage-backed securities
Short-term Borrowings
Fair value of short-term debt	41,200
Line of Credit - TCF Commercial Finance Canada, Inc.
Short-term Borrowings
Short-term borrowings	$ 5,258	$ 0
Interest rate at period end (as a percent)	1.75%	0.00%
Average daily balances of short-term borrowings	$ 2,571	$ 2,957
Average daily interest rate (as a percent)	1.97%	1.88%
Maximum month-end balances of short-term borrowings	$ 5,519	$ 11,751

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Loans and Leases (Details 3) - Consumer Borrower - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Consumer Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest-only strips	$ 21,138	$ 21,198
Contractual liabilities related to sale of loans	723	563
Auto Finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest-only strips	29,561	48,591
Contractual liabilities related to sale of loans	$ 365	$ 699

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Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of net periodic benefit cost included in compensation and employee benefits expense for cash balance Pension Plan and Postretirement Plan

The following tables set forth the net periodic benefit plan (income) cost included in compensation and employee benefits expense for the TCF Cash Balance Pension Plan (the "Pension Plan") and health care benefits for eligible retired employees (the "Postretirement Plan") for the three and nine months ended September 30, 2015 and 2014.

	Pension Plan
	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2015			2014			2015			2014
Interest cost	$	303		$	397		$	911		$	1,191
Return on plan assets	(159		)	(183		)	(479		)	(549		)
Net periodic benefit plan (income) cost	$	144		$	214		$	432		$	642

	Postretirement Plan
	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2015			2014			2015			2014
Interest cost	$	39		$	49		$	115		$	148
Amortization of prior service cost	(12		)	(12		)	(35		)	(35		)
Net periodic benefit plan (income) cost	$	27		$	37		$	80		$	113

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Regulatory Capital Requirements (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Compliance with Regulatory Capital Requirements under Banking Regulations
Number of prior calendar years considered for payment of dividends in excess of net retained profit	2 years
Net profits for the current year combined with retained net profits for preceding two calendar years	$ 440,200
Maximum
Compliance with Regulatory Capital Requirements under Banking Regulations
Percentage of net retained profits for the current year combined with retained net profits for the preceding two calendar years that can be declared as dividend	100.00%
TCF
Regulatory Capital:
Common equity Tier 1 capital	$ 1,774,729
Tier 1 capital	2,054,711	$ 1,919,887
Total capital	$ 2,446,551	$ 2,209,999
Common equity Tier 1 capital ratio
Actual, Ratio	10.04%
Tier 1 risk-based capital ratio
Actual, Ratio	11.62%	11.76%
Total risk-based capital ratio
Actual, Ratio	13.84%	13.54%
Tier 1 leverage ratio
Actual, Ratio	10.43%	10.07%
TCF Bank
Regulatory Capital:
Common equity Tier 1 capital	$ 1,952,196
Tier 1 capital	1,970,696	$ 1,836,019
Total capital	$ 2,385,498	$ 2,126,131
Common equity Tier 1 capital ratio
Actual, Ratio	11.04%
Well-Capitalized Capital Requirement, Ratio	6.50%
Minimum Capital Requirement, Ratio	4.50%
Tier 1 risk-based capital ratio
Actual, Ratio	11.15%	11.25%
Well-Capitalized Capital Requirement, Ratio	8.00%
Minimum Capital Requirement, Ratio	6.00%
Total risk-based capital ratio
Actual, Ratio	13.49%	13.03%
Well-Capitalized Capital Requirement, Ratio	10.00%
Minimum Capital Requirement, Ratio	8.00%
Tier 1 leverage ratio
Actual, Ratio	10.01%	9.63%
Well-Capitalized Capital Requirement, Ratio	5.00%
Minimum Capital Requirement, Ratio	4.00%

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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Securities available for sale, Before Tax
Unrealized gains (losses) arising during the period, Before Tax	$ 9,972	$ (862)	$ 2,971	$ 19,652
Reclassification of net (gains) losses to net income, Before Tax	281	254	871	(375)
Net unrealized gains (losses), Before Tax	10,253	(608)	3,842	19,277
Securities available for sale, Tax Effect
Unrealized gains (losses) arising during the period, Tax Effect	(3,766)	324	(1,122)	(7,401)
Reclassification of net (gains) losses to net income, Tax Effect	(106)	(94)	(329)	142
Net unrealized gains (losses), Tax Effect	(3,872)	230	(1,451)	(7,259)
Securities available for sale, Net of Tax
Unrealized gains (losses) arising during the period, Net of Tax	6,206	(538)	1,849	12,251
Reclassification of net (gains) losses to net income, Net of Tax	175	160	542	(233)
Net unrealized gains (losses), Net of Tax	6,381	(378)	2,391	12,018
Net investment hedges, Net of Tax
Unrealized gains (losses) arising during the period, Before Tax	2,858	1,849	5,772	1,677
Unrealized gains (losses) arising during the period, Tax Effect	(1,079)	(698)	(2,180)	(633)
Unrealized gains (losses) arising during the period, Net of Tax	1,779	1,151	3,592	1,044
Foreign currency translation adjustment, Net of Tax
Unrealized gains (losses) arising during the period, Before Tax	(3,049)	(2,066)	(6,318)	(2,043)
Unrealized gains (losses) arising during the period, Tax Effect	0	0	0	0
Unrealized gains (losses) arising during the period, Net of Tax	(3,049)	(2,066)	(6,318)	(2,043)
Recognized postretirement prior service cost and translation obligation, Net of Tax
Reclassification of net (gains) losses to net income, Before Tax	(12)	(12)	(35)	(35)
Reclassification of net (gains) losses to net income, Tax Effect	4	4	13	13
Reclassification of net (gains) losses to net income, Net of Tax	(8)	(8)	(22)	(22)
Total other comprehensive loss, Net of Tax
Total other comprehensive income (loss), Before Tax	10,050	(837)	3,261	18,876
Total other comprehensive income (loss), Tax Effect	(4,947)	(464)	(3,618)	(7,879)
Total other comprehensive income (loss)	$ 5,103	$ (1,301)	$ (357)	$ 10,997

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Securities Available for Sale and Securities Held to Maturity (Tables)

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Schedule of securities

Securities consisted of the following.

	At September 30, 2015									At December 31, 2014
(Dollars in thousands)	Amortized Cost			Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost			Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	615,798		$	3,318	$	886	$	618,230	$	461,575		$	2,405	$	741	$	463,239
Other	38			—		—		38		55			—		—		55
Obligations of states and political subdivisions	162,524			2,207		4		164,727		—			—		—		—
Total securities available for sale	$	778,360		$	5,525	$	890	$	782,995	$	461,630		$	2,405	$	741	$	463,294
Weighted-average yield	2.36		%							2.62		%
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	199,552		$	8,011	$	131	$	207,432	$	209,538		$	7,988	$	109	$	217,417
Other securities	4,577			—		—		4,577		4,916			—		—		4,916
Total securities held to maturity	$	204,129		$	8,011	$	131	$	212,009	$	214,454		$	7,988	$	109	$	222,333
Weighted-average yield	2.65		%							2.64		%

Schedule of gross unrealized losses and fair value of securities available for sale and securities held to maturity that are in a loss position

The following tables show the gross unrealized losses and fair value of securities available for sale and securities held to maturity at September 30, 2015 and December 31, 2014, aggregated by investment category and the length of time the securities were in a continuous loss position.

	At September 30, 2015
	Less than 12 months				12 months or more				Total
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	230,174	$	886	$	—	$	—	$	230,174	$	886
Obligations of states and political subdivisions	841		4		—		—		841		4
Total securities available for sale	$	231,015	$	890	$	—	$	—	$	231,015	$	890
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	4,055	$	38	$	1,855	$	93	$	5,910	$	131
Total securities held to maturity	$	4,055	$	38	$	1,855	$	93	$	5,910	$	131

	At December 31, 2014
	Less than 12 months				12 months or more				Total
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	—	$	198,550	$	741	$	198,550	$	741
Total securities available for sale	$	—	$	—	$	198,550	$	741	$	198,550	$	741
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	2,602	$	109	$	—	$	—	$	2,602	$	109
Total securities held to maturity	$	2,602	$	109	$	—	$	—	$	2,602	$	109

Schedule of amortized cost, fair value and yield of securities available for sale and securities held to maturity by contractual maturity

The amortized cost, fair value and yield of securities available for sale and securities held to maturity by contractual maturity at September 30, 2015 and December 31, 2014 are shown below. The remaining contractual principal maturities do not consider possible prepayments. Remaining expected maturities will differ from contractual maturities because borrowers may have the right to prepay. Yields on securities have not been adjusted for tax exempt status.

	At September 30, 2015						At December 31, 2014
(Dollars in thousands)	Amortized Cost		Fair Value		Yield		Amortized Cost		Fair Value		Yield
Securities available for sale:
Due in one year or less	$	2	$	2	9.00	%	$	4	$	4	11.63	%
Due in 1-5 years	43		43		3.24		76		76		4.53
Due in 5-10 years	220,673		223,617		2.05		86,806		87,594		1.93
Due after 10 years	557,642		559,333		2.48		374,744		375,620		2.78
Total securities available for sale	$	778,360	$	782,995	2.36		$	461,630	$	463,294	2.62
Securities held to maturity:
Due in one year or less	$	100	$	100	2.00	%	$	500	$	500	2.00	%
Due in 1-5 years	1,700		1,700		2.65		2,500		2,500		3.08
Due in 5-10 years	1,600		1,600		3.25		400		400		3.00
Due after 10 years	200,729		208,609		2.64		211,054		218,933		2.64
Total securities held to maturity	$	204,129	$	212,009	2.65		$	214,454	$	222,333	2.64

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Allowance for Loan and Lease Losses and Credit Quality Information (Details 4) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Accruing and Non-accrual Loans and Leases
0-59 days delinquent and accruing	$ 16,994,936	$ 16,184,912
Non-accrual	206,110	216,734
Total loans and leases	17,201,046	16,401,646
Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
0-59 days delinquent and accruing	16,965,357	16,162,476
60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
60 days delinquent and accruing	27,392	20,426
Consumer real estate loans to customers in bankruptcy
Accruing and Non-accrual Loans and Leases
Non-accrual	19,243	12,284
Total loans and leases	47,272	60,262
Consumer real estate loans to customers in bankruptcy | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
0-59 days delinquent and accruing	28,029	47,731
Consumer real estate loans to customers in bankruptcy | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
60 days delinquent and accruing	$ 0	$ 247

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Securities Available for Sale and Securities Held to Maturity (Details 3) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Amortized cost, securities available for sale
Due in one year or less	$ 2	$ 4
Due in 1-5 years	43	76
Due in 5-10 years	220,673	86,806
Due after 10 years	557,642	374,744
Amortized Cost	778,360	461,630
Fair value, securities available for sale
Due in one year or less	2	4
Due in 1-5 years	43	76
Due in 5-10 years	223,617	87,594
Due after 10 years	559,333	375,620
Fair Value	$ 782,995	$ 463,294
Yield, securities available for sale
Due in one year or less (as a percent)	9.00%	11.63%
Due in 1-5 years (as a percent)	3.24%	4.53%
Due in 5-10 years (as a percent)	2.05%	1.93%
Due after 10 years (as a percent)	2.48%	2.78%
Weighted-average yield	2.36%	2.62%
Amortized cost, securities held to maturity
Due in one year or less	$ 100	$ 500
Due in 1-5 years	1,700	2,500
Due in 5-10 years	1,600	400
Due after 10 years	200,729	211,054
Amortized Cost	204,129	214,454
Fair value, securities held to maturity
Due in one year or less	100	500
Due in 1-5 years	1,700	2,500
Due in 5-10 years	1,600	400
Due after 10	208,609	218,933
Fair Value	$ 212,009	$ 222,333
Yield, securities held to maturity
Due in one year or less (as a percent)	2.00%	2.00%
Due in 1-5 years (as a percent)	2.65%	3.08%
Due in 5-10 years (as a percent)	3.25%	3.00%
Due after 10 (as a percent)	2.64%	2.64%
Weighted-average yield	2.65%	2.64%

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Business Segments (Tables)

9 Months Ended

Sep. 30, 2015

Segment Reporting [Abstract]

Reportable segments, including a reconciliation of consolidated totals

The following tables set forth certain information for each of TCF's reportable segments, including a reconciliation of TCF's consolidated totals.

(In thousands)	Lending		Funding			Support Services			Eliminations			Consolidated
At or For the Three Months Ended September 30, 2015:
Net interest income	$	155,130	$	51,356		$	14		$	(1,230	)	$	205,270
Provision for credit losses	9,101		917			—			—			10,018
Non-interest income	56,439		55,819			28,063			(28,069		)	112,252
Non-interest expense	115,503		106,353			28,497			(28,069		)	222,284
Income tax expense (benefit)	31,599		(7		)	166			(1,230		)	30,528
Income (loss) after income tax expense (benefit)	55,366		(88		)	(586		)	—			54,692
Income attributable to non-controlling interest	2,117		—			—			—			2,117
Preferred stock dividends	—		—			4,847			—			4,847
Net income (loss) available to common stockholders	$	53,249	$	(88	)	$	(5,433	)	$	—		$	47,728
Total assets	$	17,642,476	$	7,024,906		$	195,747		$	(4,737,193	)	$	20,125,936
Revenues from external customers:
Interest income	$	216,777	$	6,827		$	—		$	—		$	223,604
Non-interest income	56,439		55,807			6			—			112,252
Total	$	273,216	$	62,634		$	6		$	—		$	335,856
At or For the Three Months Ended September 30, 2014:
Net interest income	$	149,048	$	56,017		$	44		$	(929	)	$	204,180
Provision for credit losses	14,593		1,146			—			—			15,739
Non-interest income	58,432		57,453			34,232			(34,041		)	116,076
Non-interest expense	107,892		111,749			34,088			(34,041		)	219,688
Income tax expense (benefit)	31,525		236			(41		)	(929		)	30,791
Income (loss) after income tax expense (benefit)	53,470		339			229			—			54,038
Income attributable to non-controlling interest	1,721		—			—			—			1,721
Preferred stock dividends	—		—			4,847			—			4,847
Net income (loss) available to common stockholders	$	51,749	$	339		$	(4,618	)	$	—		$	47,470
Total assets	$	16,821,067	$	5,894,540		$	178,781		$	(3,872,285	)	$	19,022,103
Revenues from external customers:
Interest income	$	214,070	$	5,633		$	—		$	—		$	219,703
Non-interest income	58,432		57,438			206			—			116,076
Total	$	272,502	$	63,071		$	206		$	—		$	335,779

(In thousands)	Lending		Funding			Support Services			Eliminations			Consolidated
At or For the Nine Months Ended September 30, 2015:
Net interest income	$	464,478	$	153,073		$	85		$	(2,917	)	$	614,719
Provision for credit losses	33,680		1,657			—			—			35,337
Non-interest income	165,528		158,922			88,424			(86,535		)	326,339
Non-interest expense	342,533		326,727			89,435			(86,535		)	672,160
Income tax expense (benefit)	91,344		(5,949		)	(220		)	(2,917		)	82,258
Income (loss) after income tax expense (benefit)	162,449		(10,440		)	(706		)	—			151,303
Income attributable to non-controlling interest	6,672		—			—			—			6,672
Preferred stock dividends	—		—			14,541			—			14,541
Net income (loss) available to common stockholders	$	155,777	$	(10,440	)	$	(15,247	)	$	—		$	130,090
Total assets	$	17,642,476	$	7,024,906		$	195,747		$	(4,737,193	)	$	20,125,936
Revenues from external customers:
Interest income	$	647,878	$	18,601		$	—		$	—		$	666,479
Non-interest income	165,528		158,884			1,927			—			326,339
Total	$	813,406	$	177,485		$	1,927		$	—		$	992,818
At or For the Nine Months Ended September 30, 2014:
Net interest income	$	443,245	$	170,657		$	98		$	(2,445	)	$	611,555
Provision for credit losses	37,950		2,190			—			—			40,140
Non-interest income	156,921		165,082			102,013			(100,517		)	323,499
Non-interest expense	318,733		328,557			103,246			(100,517		)	650,019
Income tax expense (benefit)	89,275		1,938			(13		)	(2,445		)	88,755
Income (loss) after income tax expense (benefit)	154,208		3,054			(1,122		)	—			156,140
Income attributable to non-controlling interest	5,941		—			—			—			5,941
Preferred stock dividends	—		—			14,541			—			14,541
Net income (loss) available to common stockholders	$	148,267	$	3,054		$	(15,663	)	$	—		$	135,658
Total assets	$	16,821,067	$	5,894,540		$	178,781		$	(3,872,285	)	$	19,022,103
Revenues from external customers:
Interest income	$	637,851	$	16,570		$	—		$	—		$	654,421
Non-interest income	156,921		165,037			1,541			—			323,499
Total	$	794,772	$	181,607		$	1,541		$	—		$	977,920

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Allowance for Loan and Lease Losses and Credit Quality Information (Details 6) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Loan Modifications for Borrowers with Financial Difficulties
Minimum period for loans to be delinquent to be considered in default			90 days	90 days
Loan Balance	$ 688	$ 1,146	$ 2,931	$ 8,584
Total TDR loans modified in the applicable period	$ 52,622	$ 115,533	$ 82,135	$ 174,433
Defaulted modified TDR loans as a percent of total TDR loans modified in the applicable period	1.30%	1.00%	3.60%	4.90%
Consumer Real Estate Loan | Consumer Borrower
Loan Modifications for Borrowers with Financial Difficulties
Loan Balance	$ 406	$ 906	$ 2,255	$ 4,406
Consumer Real Estate Loan | Consumer Borrower | First mortgage lien
Loan Modifications for Borrowers with Financial Difficulties
Loan Balance	158	703	1,456	3,068
Consumer Real Estate Loan | Consumer Borrower | Junior lien
Loan Modifications for Borrowers with Financial Difficulties
Loan Balance	248	203	799	1,338
Consumer Real Estate Loan | Commercial Borrower
Loan Modifications for Borrowers with Financial Difficulties
Loan Balance	0	127	0	3,941
Consumer Real Estate Loan | Commercial real estate
Loan Modifications for Borrowers with Financial Difficulties
Loan Balance	0	0	0	3,814
Consumer Real Estate Loan | Commercial business
Loan Modifications for Borrowers with Financial Difficulties
Loan Balance	0	127	0	127
Auto Finance
Loan Modifications for Borrowers with Financial Difficulties
Loan Balance	$ 282	$ 113	$ 676	$ 237

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Fair Values Disclosures (Details 4) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Financial instrument assets:
Securities held to maturity	$ 204,129		$ 214,454
Loans:
Commercial real estate	2,561,828		2,624,255
Allowance for loan losses	(153,962)	$ (156,115)	(164,169)	$ (222,658)	$ (236,081)	$ (252,230)
Level 1
Financial instrument assets:
Investments	0		0
Securities held to maturity	0		0
Loans and leases held for sale	0		0
Loans:
Consumer real estate	0		0
Commercial real estate	0		0
Commercial business	0		0
Equipment finance	0		0
Inventory finance	0		0
Auto finance	0		0
Other	0		0
Allowance for loan losses	0		0
Interest-only strips	0		0
Total financial instrument assets	0		0
Financial instrument liabilities:
Deposits	12,446,180		12,400,693
Long-term borrowings	0		0
Total financial instrument liabilities	12,446,180		12,400,693
Financial instruments with off-balance sheet risk:
Commitments to extend credit	0		0
Standby letters of credit	0		0
Total financial instruments with off-balance sheet risk	0		0
Level 2
Financial instrument assets:
Investments	76,543		85,492
Securities held to maturity	207,432		217,418
Loans and leases held for sale	0		0
Loans:
Consumer real estate	0		0
Commercial real estate	0		0
Commercial business	0		0
Equipment finance	0		0
Inventory finance	0		0
Auto finance	0		0
Other	0		0
Allowance for loan losses	0		0
Interest-only strips	0		0
Total financial instrument assets	283,975		302,910
Financial instrument liabilities:
Deposits	3,631,649		3,063,850
Long-term borrowings	1,187,433		1,246,221
Total financial instrument liabilities	4,819,082		4,310,071
Financial instruments with off-balance sheet risk:
Commitments to extend credit	24,582		25,885
Standby letters of credit	(32)		(47)
Total financial instruments with off-balance sheet risk	24,550		25,838
Level 3
Financial instrument assets:
Investments	0		0
Securities held to maturity	4,577		4,916
Loans and leases held for sale	123,926		139,370
Loans:
Consumer real estate	5,728,048		5,836,770
Commercial real estate	2,507,532		2,575,625
Commercial business	528,109		512,083
Equipment finance	1,847,767		1,787,271
Inventory finance	2,139,272		1,864,786
Auto finance	2,442,324		1,927,384
Other	16,619		18,724
Allowance for loan losses	0		0
Interest-only strips	54,066		73,058
Total financial instrument assets	15,392,240		14,739,987
Financial instrument liabilities:
Deposits	0		0
Long-term borrowings	5,409		8,054
Total financial instrument liabilities	5,409		8,054
Financial instruments with off-balance sheet risk:
Commitments to extend credit	0		0
Standby letters of credit	0		0
Total financial instruments with off-balance sheet risk	0		0
Carrying Amount
Financial instrument assets:
Investments	76,543		85,492
Securities held to maturity	204,129		214,454
Loans and leases held for sale	116,155		132,266
Loans:
Consumer real estate	5,613,714		5,682,364
Commercial real estate	2,561,828		2,624,255
Commercial business	550,497		533,410
Equipment finance	1,858,265		1,806,808
Inventory finance	2,153,385		1,877,090
Auto finance	2,427,367		1,915,061
Other	20,674		24,144
Allowance for loan losses	(153,962)		(164,169)
Interest-only strips	50,699		69,789
Total financial instrument assets	15,479,294		14,800,964
Financial instrument liabilities:
Deposits	16,058,433		15,449,882
Long-term borrowings	1,184,166		1,232,065
Total financial instrument liabilities	17,242,599		16,681,947
Financial instruments with off-balance sheet risk:
Commitments to extend credit	24,582		25,885
Standby letters of credit	(32)		(47)
Total financial instruments with off-balance sheet risk	24,550		25,838
Estimated Fair Value
Financial instrument assets:
Investments	76,543		85,492
Securities held to maturity	212,009		222,334
Loans and leases held for sale	123,926		139,370
Loans:
Consumer real estate	5,728,048		5,836,770
Commercial real estate	2,507,532		2,575,625
Commercial business	528,109		512,083
Equipment finance	1,847,767		1,787,271
Inventory finance	2,139,272		1,864,786
Auto finance	2,442,324		1,927,384
Other	16,619		18,724
Allowance for loan losses	0		0
Interest-only strips	54,066		73,058
Total financial instrument assets	15,676,215		15,042,897
Financial instrument liabilities:
Deposits	16,077,829		15,464,543
Long-term borrowings	1,192,842		1,254,275
Total financial instrument liabilities	17,270,671		16,718,818
Financial instruments with off-balance sheet risk:
Commitments to extend credit	24,582		25,885
Standby letters of credit	(32)		(47)
Total financial instruments with off-balance sheet risk	$ 24,550		$ 25,838

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Derivative Instruments (Details 2) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Derivative assets
Gross Amounts Recognized	$ 8,015	$ 5,294
Gross Amounts Offset	(1,176)	(1,179)
Net Amount Presented	6,839	4,115
Derivative liabilities
Gross Amounts Recognized	3,358	2,675
Gross Amounts Offset	(3,178)	(2,527)
Net Amount Presented	180	148
Forward foreign exchange contracts | Designated as Hedges
Derivative assets
Notional Amount	45,973	42,165
Gross Amounts Recognized	327	509
Gross Amounts Offset	0	0
Net Amount Presented	327	509
Forward foreign exchange contracts | Not Designated as Hedges
Derivative assets
Notional Amount	402,568	275,962
Gross Amounts Recognized	2,506	2,702
Gross Amounts Offset	(1,176)	(1,179)
Net Amount Presented	1,330	1,523
Derivative liabilities
Notional Amount	112,680	189,310
Gross Amounts Recognized	348	177
Gross Amounts Offset	(168)	(29)
Net Amount Presented	180	148
Interest rate contracts | Designated as Hedges
Derivative assets
Notional Amount	150,000
Gross Amounts Recognized	2,029
Gross Amounts Offset	0
Net Amount Presented	2,029
Interest rate contracts | Not Designated as Hedges
Derivative assets
Notional Amount	82,884	101,166
Gross Amounts Recognized	2,510	1,798
Gross Amounts Offset	0	0
Net Amount Presented	2,510	1,798
Derivative liabilities
Notional Amount	82,884	101,166
Gross Amounts Recognized	2,624	1,877
Gross Amounts Offset	(2,624)	(1,877)
Net Amount Presented	0	0
Interest rate lock commitments | Not Designated as Hedges
Derivative assets
Notional Amount	36,632	15,124
Gross Amounts Recognized	643	285
Gross Amounts Offset	0	0
Net Amount Presented	643	285
Other contracts | Not Designated as Hedges
Derivative liabilities
Notional Amount	13,804	13,804
Gross Amounts Recognized	386	621
Gross Amounts Offset	(386)	(621)
Net Amount Presented	$ 0	$ 0

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Allowance for Loan and Lease Losses and Credit Quality Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Allowance for loan and lease losses
Balance, beginning of period	$ 156,115	$ 236,081	$ 164,169	$ 252,230
Charge-offs	(15,338)	(32,638)	(56,446)	(77,950)
Recoveries	5,397	5,701	17,490	15,242
Net (charge-offs) recoveries	(9,941)	(26,937)	(38,956)	(62,708)
Provision for credit losses	10,018	15,739	35,337	40,140
Other	(2,230)	(2,225)	(6,588)	(7,004)
Balance, end of period	153,962	222,658	153,962	222,658
Consumer Real Estate
Allowance for loan and lease losses
Balance, beginning of period	74,687	161,349	85,361	176,030
Charge-offs	(6,310)	(24,072)	(27,074)	(51,639)
Recoveries	1,832	1,912	5,626	5,319
Net (charge-offs) recoveries	(4,478)	(22,160)	(21,448)	(46,320)
Provision for credit losses	780	6,636	8,660	17,821
Other	(660)	(700)	(2,244)	(2,406)
Balance, end of period	70,329	145,125	70,329	145,125
Commercial
Allowance for loan and lease losses
Balance, beginning of period	30,205	31,361	31,367	37,467
Charge-offs	(487)	(262)	(3,944)	(5,628)
Recoveries	514	406	2,878	785
Net (charge-offs) recoveries	27	144	(1,066)	(4,843)
Provision for credit losses	(226)	1,785	(295)	737
Other	0	0	0	(71)
Balance, end of period	30,006	33,290	30,006	33,290
Leasing and Equipment Finance
Allowance for loan and lease losses
Balance, beginning of period	17,669	19,184	18,446	18,733
Charge-offs	(1,583)	(2,350)	(5,447)	(5,760)
Recoveries	702	1,157	2,205	2,845
Net (charge-offs) recoveries	(881)	(1,193)	(3,242)	(2,915)
Provision for credit losses	1,389	(391)	2,973	1,782
Other	0	0	0	0
Balance, end of period	18,177	17,600	18,177	17,600
Inventory Finance
Allowance for loan and lease losses
Balance, beginning of period	10,879	9,539	10,020	8,592
Charge-offs	(463)	(548)	(1,812)	(898)
Recoveries	319	284	626	661
Net (charge-offs) recoveries	(144)	(264)	(1,186)	(237)
Provision for credit losses	546	411	2,627	1,336
Other	(160)	(130)	(340)	(135)
Balance, end of period	11,121	9,556	11,121	9,556
Auto Finance
Allowance for loan and lease losses
Balance, beginning of period	22,061	13,865	18,230	10,623
Charge-offs	(4,594)	(2,958)	(12,943)	(7,682)
Recoveries	915	494	2,253	1,109
Net (charge-offs) recoveries	(3,679)	(2,464)	(10,690)	(6,573)
Provision for credit losses	6,750	6,302	20,186	16,650
Other	(1,410)	(1,395)	(4,004)	(4,392)
Balance, end of period	23,722	16,308	23,722	16,308
Other
Allowance for loan and lease losses
Balance, beginning of period	614	783	745	785
Charge-offs	(1,901)	(2,448)	(5,226)	(6,343)
Recoveries	1,115	1,448	3,902	4,523
Net (charge-offs) recoveries	(786)	(1,000)	(1,324)	(1,820)
Provision for credit losses	779	996	1,186	1,814
Other	0	0	0	0
Balance, end of period	$ 607	$ 779	$ 607	$ 779

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Cash and Due from Banks

9 Months Ended

Sep. 30, 2015

Cash and Cash Equivalents [Abstract]

Cash and Due from Banks

Cash and Due from Banks

At September 30, 2015 and December 31, 2014, TCF Bank was required by Federal Reserve regulations to maintain reserves of $93.3 million and $98.7 million, respectively, in cash on hand or at the Federal Reserve Bank.

TCF maintains cash balances that are restricted as to their use in accordance with certain contractual agreements primarily related to the sale and servicing of auto loans. Cash payments received on loans serviced for third parties are generally held in separate accounts until remitted. TCF also retains cash balances for collateral on certain borrowings, forward foreign exchange contracts and interest rate contracts. TCF maintained restricted cash totaling $69.7 million and $67.8 million at September 30, 2015 and December 31, 2014, respectively.

TCF had cash held in interest-bearing accounts of $521.2 million and $842.1 million at September 30, 2015 and December 31, 2014, respectively.

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Derivative Instruments (Details 3) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivatives instruments, gain (loss)
Derivative, gain (loss) on derivative	$ 27,586,000	$ 21,702,000	$ 56,364,000	$ 21,001,000
Net investment hedges:
Net unrealized gain	2,858,000	1,849,000	5,772,000	1,677,000
Credit risk-related contingent features
Forward foreign exchange contracts with credit risk-related contingent features, notional value	161,500,000		161,500,000
Additional collateral required, if TCF was rated less than BB- by Standard and Poor's	3,200,000		3,200,000
Forward foreign exchange contracts with credit risk-related contingent features, net liability amount	0		0
Designated as Hedges | Net Investment Hedges
Net investment hedges:
Net investment hedge	2,858,000	1,849,000	5,772,000	1,677,000
Net Realized Gain (Loss) On Derivative Instruments Recognized In Non-Interest Income | Designated as Hedges | Fair Value Hedging
Derivatives instruments, gain (loss)
Derivative, gain (loss) on derivative	(5,425,000)	0	(1,862,000)	0
Interest rate contracts | Net Realized Gain (Loss) On Derivative Instruments Recognized In Non-Interest Income | Designated as Hedges | Fair Value Hedging
Derivatives instruments, gain (loss)
Derivative, gain (loss) on derivative	6,296,000	0	2,029,000	0
Interest rate contracts | Net Realized Gain (Loss) On Derivative Instruments Recognized In Non-Interest Income | Not Designated as Hedges
Derivatives instruments, gain (loss)
Derivative, gain (loss) on derivative	(48,000)	10,000	(28,000)	(40,000)
Forward foreign exchange contracts | Net Realized Gain (Loss) On Derivative Instruments Recognized In Non-Interest Expense | Not Designated as Hedges
Derivatives instruments, gain (loss)
Derivative, gain (loss) on derivative	26,574,000	21,533,000	55,866,000	20,882,000
Interest rate lock commitments | Net Realized Gain (Loss) On Derivative Instruments Recognized In Non-Interest Income | Not Designated as Hedges
Derivatives instruments, gain (loss)
Derivative, gain (loss) on derivative	$ 189,000	$ 159,000	$ 359,000	$ 159,000

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Loans and Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Consumer real estate:
First mortgage lien	$ 2,724,594	$ 3,139,152
First mortgage lien, Percent Change	(13.20%)
Junior lien	$ 2,889,120	2,543,212
Junior lien, Percent Change	13.60%
Total consumer real estate	$ 5,613,714	5,682,364
Total consumer real estate, Percent Change	(1.20%)
Commercial real estate:
Permanent	$ 2,233,722	2,382,144
Permanent, Percent Change	(6.20%)
Construction and development	$ 328,106	242,111
Construction and development, Percent Change	35.50%
Total commercial real estate	$ 2,561,828	2,624,255
Total commercial real estate, Percent Change	(2.40%)
Commercial business	$ 550,497	533,410
Commercial business, Percent Change	3.20%
Total commercial	$ 3,112,325	3,157,665
Total commercial, Percent Change	(1.40%)
Leasing and equipment finance	$ 3,873,581	3,745,322
Leasing and equipment finance, Percent Change	3.40%
Inventory finance	$ 2,153,385	1,877,090
Inventory finance, Percent Change	14.70%
Auto finance	$ 2,427,367	1,915,061
Auto finance, Percentage Change	26.80%
Other	$ 20,674	24,144
Other finance, Percent Change	(14.40%)
Total loans and leases	$ 17,201,046	16,401,646
Total loans and leases, Percent Change	4.90%
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	$ 55,100	$ 43,400

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Short-term Borrowings (Tables)

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Schedule of selected information for short-term borrowings (borrowings with an original maturity of less than one year)

Selected information for short-term borrowings (borrowings with an original maturity of less than one year) consisted of the following.

	At September 30, 2015				At December 31, 2014
(Dollars in thousands)	Amount		Rate		Amount		Rate
Period end balance:
Securities sold under repurchase agreements	$	31,251	0.04	%	$	4,425	0.10	%
Line of Credit - TCF Commercial Finance Canada, Inc.	5,258		1.75		—		—
Total	$	36,509	0.29		$	4,425	0.10
Average daily balances for the year to date period ended:
Federal Home Loan Bank advances	$	—	—	%	$	74,385	0.26	%
Federal funds purchased	169		0.43		375		0.40
Securities sold under repurchase agreements	12,866		0.09		5,956		0.18
Line of Credit - TCF Commercial Finance Canada, Inc.	2,571		1.97		2,957		1.88
Total	$	15,606	0.40		$	83,673	0.31
Maximum month-end balances for the year to date period ended:
Federal Home Loan Bank advances	$	—	N.A.		$	250,000	N.A.
Securities sold under repurchase agreements	62,995		N.A.		4,425		N.A.
Line of Credit - TCF Commercial Finance Canada, Inc.	5,519		N.A.		11,751		N.A.
N.A. Not Applicable.

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Deposits (Tables)

9 Months Ended

Sep. 30, 2015

Deposits [Abstract]

Summary of deposits

Deposits consisted of the following.

	At September 30, 2015						At December 31, 2014
(Dollars in thousands)	Weighted-Average Rate		Amount		% of Total		Weighted-Average Rate		Amount		% of Total
Checking:
Non-interest bearing	—	%	$	3,016,571	18.8	%	—	%	$	2,832,526	18.3	%
Interest bearing	0.02		2,361,453		14.7		0.04		2,362,717		15.3
Total checking	0.01		5,378,024		33.5		0.02		5,195,243		33.6
Savings	0.07		4,774,766		29.7		0.15		5,212,320		33.7
Money market	0.63		2,293,390		14.3		0.54		1,993,130		13.0
Certificates of deposit	0.88		3,612,253		22.5		0.78		3,049,189		19.7
Total deposits	0.29		$	16,058,433	100.0	%	0.26		$	15,449,882	100.0	%

Schedule of certificates of deposit remaining maturities

Certificates of deposit had the following remaining maturities at September 30, 2015.

(In thousands)	Denominations  $100 Thousand or Greater		Denominations Less Than  $100 Thousand		Total
Maturity:
0-3 months	$	229,752	$	315,023	$	544,775
4-6 months	318,684		387,072		705,756
7-12 months	683,865		710,942		1,394,807
13-24 months	432,510		430,804		863,314
Over 24 months	58,169		45,432		103,601
Total	$	1,722,980	$	1,889,273	$	3,612,253

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Long-term Borrowings (Details) - USD ($)	Feb. 27, 2015	Sep. 30, 2015	Dec. 31, 2014
Debt instrument
Long-term Debt		$ 1,184,166,000	$ 1,232,065,000
Interest rate contracts | Designated as Hedges
Debt instrument
Derivative asset, notional amount		150,000,000
Federal Home Loan Bank advances
Debt instrument
Long-term Debt		722,000,000	947,000,000
Variable-rate FHLB advances prepayable monthly		275,000,000
Federal Home Loan Bank advances | Maturity year 2015
Debt instrument
Long-term Debt		$ 0	$ 125,000,000
Federal Home Loan Bank advances | Maturity year 2015 | Minimum
Debt instrument
Stated Rate		0.00%	0.37%
Federal Home Loan Bank advances | Maturity year 2015 | Maximum
Debt instrument
Stated Rate		0.00%	0.38%
Federal Home Loan Bank advances | Maturity year 2016
Debt instrument
Long-term Debt		$ 447,000,000	$ 547,000,000
Federal Home Loan Bank advances | Maturity year 2016 | TCF Bank
Debt instrument
Loans pledged as collateral		$ 4,900,000,000
Federal Home Loan Bank advances | Maturity year 2016 | Minimum
Debt instrument
Stated Rate		0.39%	0.25%
Federal Home Loan Bank advances | Maturity year 2016 | Maximum
Debt instrument
Stated Rate		1.17%	1.17%
Federal Home Loan Bank advances | Maturity Year 2017
Debt instrument
Long-term Debt		$ 275,000,000	$ 275,000,000
Stated Rate			0.25%
Federal Home Loan Bank advances | Maturity Year 2017 | Minimum
Debt instrument
Stated Rate		0.24%
Federal Home Loan Bank advances | Maturity Year 2017 | Maximum
Debt instrument
Stated Rate		0.26%
Subordinated bank notes
Debt instrument
Long-term Debt		$ 335,206,000	$ 184,124,000
Subordinated bank notes | Maturity year 2016
Debt instrument
Long-term Debt		$ 74,978,000	$ 74,930,000
Stated Rate		5.50%	5.50%
Subordinated bank notes | Maturity Year 2022
Debt instrument
Long-term Debt		$ 109,260,000	$ 109,194,000
Stated Rate		6.25%	6.25%
Subordinated bank notes | Maturity Year 2025
Debt instrument
Long-term Debt		$ 149,106,000	$ 0
Stated Rate	4.60%	4.60%	0.00%
Debt instrument, face amount	$ 150,000,000
Debt instrument, net of discount (as a percent)	99.375%
Debt issuance cost	$ 1,400,000
Subordinated bank notes | Maturity Year 2025, Interest Rate Swap
Debt instrument
Long-term Debt		$ 1,862,000	$ 0
Discounted lease rentals
Debt instrument
Long-term Debt		121,551,000	92,887,000
Discounted lease rentals | Maturity year 2015
Debt instrument
Long-term Debt		$ 10,355,000	$ 32,904,000
Discounted lease rentals | Maturity year 2015 | Minimum
Debt instrument
Stated Rate		2.39%	2.39%
Discounted lease rentals | Maturity year 2015 | Maximum
Debt instrument
Stated Rate		7.95%	7.95%
Discounted lease rentals | Maturity year 2016
Debt instrument
Long-term Debt		$ 44,691,000	$ 27,539,000
Discounted lease rentals | Maturity year 2016 | Minimum
Debt instrument
Stated Rate		2.39%	2.39%
Discounted lease rentals | Maturity year 2016 | Maximum
Debt instrument
Stated Rate		7.95%	7.95%
Discounted lease rentals | Maturity Year 2017
Debt instrument
Long-term Debt		$ 38,343,000	$ 20,580,000
Discounted lease rentals | Maturity Year 2017 | Minimum
Debt instrument
Stated Rate		2.45%	2.45%
Discounted lease rentals | Maturity Year 2017 | Maximum
Debt instrument
Stated Rate		7.95%	7.95%
Discounted lease rentals | Maturity Year 2018
Debt instrument
Long-term Debt		$ 21,016,000	$ 9,032,000
Discounted lease rentals | Maturity Year 2018 | Minimum
Debt instrument
Stated Rate		2.53%	2.63%
Discounted lease rentals | Maturity Year 2018 | Maximum
Debt instrument
Stated Rate		7.95%	7.95%
Discounted lease rentals | Maturity Year 2019
Debt instrument
Long-term Debt		$ 6,582,000	$ 2,589,000
Discounted lease rentals | Maturity Year 2019 | Minimum
Debt instrument
Stated Rate		2.53%	2.63%
Discounted lease rentals | Maturity Year 2019 | Maximum
Debt instrument
Stated Rate		6.00%	5.05%
Discounted lease rentals | Maturity Year 2020
Debt instrument
Long-term Debt		$ 481,000	$ 160,000
Stated Rate			4.57%
Discounted lease rentals | Maturity Year 2020 | Minimum
Debt instrument
Stated Rate		2.95%
Discounted lease rentals | Maturity Year 2020 | Maximum
Debt instrument
Stated Rate		4.57%
Discounted lease rentals | Maturity Year 2021
Debt instrument
Long-term Debt		$ 83,000	$ 83,000
Stated Rate		4.57%	4.57%
Other long-term
Debt instrument
Long-term Debt		$ 5,409,000	$ 8,054,000
Other long-term | Maturity year 2015
Debt instrument
Long-term Debt		$ 0	$ 2,670,000
Stated Rate		0.00%	1.36%
Other long-term | Maturity year 2016
Debt instrument
Long-term Debt		$ 2,666,000	$ 2,642,000
Stated Rate		1.36%	1.36%
Other long-term | Maturity Year 2017
Debt instrument
Long-term Debt		$ 2,743,000	$ 2,742,000
Stated Rate		1.36%	1.36%

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Loans and Leases (Details 1) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
HELOCs
HELOCs included in consumer real estate junior lien portfolio	$ 2,500,000,000		$ 2,100,000,000
Amortizing junior lien mortgage loans included in consumer real estate junior lien portfolio	363,000,000		424,400,000
Portion of HELOCs in initial interest-only draw period	$ 1,800,000,000		1,300,000,000
Initial Interest-only Draw Period	10 years
Loans and Leases Receivable Consumer Home Equity Amortization Repayment Period	20 years
HELOCs with interest-only revolving draw programs	$ 697,900,000		$ 816,000,000
Loans and Leases Receivable Percentage of Consumer Home Equity Line of Credit with Interest only Revolving Draw Programs Maturing Prior to Specified Period	18.30%
Consumer auto loans transferred	$ 880,800,000	$ 258,600,000
Proceeds from transfer of consumer auto loans	902,800,000	266,000,000
Gains on transfer of consumer auto loans before adjustment	22,000,000	7,400,000
Impairment related to consumer real estate interest-only strips	0	0
Impairment related to auto finance interest-only strips	$ 900,000	$ 1,600,000
Minimum
HELOCs
Draw period for the HELOCs	5 years
Maximum
HELOCs
Draw period for the HELOCs	40 years

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Long-term Borrowings (Tables)

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Information about long-term borrowings

Long-term borrowings consisted of the following.

		At September 30, 2015							At December 31, 2014
(Dollars in thousands)	Stated Maturity	Amount		Stated Rate					Amount		Stated Rate
Federal Home Loan Bank advances	2015	$	—	—	%		—	%	$	125,000	0.37	%	-	0.38	%
	2016	447,000		0.39		-	1.17		547,000		0.25		-	1.17
	2017	275,000		0.24		-	0.26		275,000					0.25
Subtotal		722,000							947,000
Subordinated bank notes	2016	74,978					5.50		74,930					5.50
	2022	109,260					6.25		109,194					6.25
	2025	149,106					4.60		—					—
Hedge-related basis adjustment(1)		1,862							—
Subtotal		335,206							184,124
Discounted lease rentals	2015	10,355		2.39		-	7.95		32,904		2.39		-	7.95
	2016	44,691		2.39		-	7.95		27,539		2.39		-	7.95
	2017	38,343		2.45		-	7.95		20,580		2.45		-	7.95
	2018	21,016		2.53		-	7.95		9,032		2.63		-	7.95
	2019	6,582		2.53		-	6.00		2,589		2.63		-	5.05
	2020	481		2.95		-	4.57		160					4.57
	2021	83					4.57		83					4.57
Subtotal		121,551							92,887
Other long-term	2015	—					—		2,670					1.36
	2016	2,666					1.36		2,642					1.36
	2017	2,743					1.36		2,742					1.36
Subtotal		5,409							8,054
Total long-term borrowings		$	1,184,166						$	1,232,065

(1) Related to subordinated bank notes with a stated maturity of 2025 at September 30, 2015.

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Regulatory Capital Requirements (Tables)

9 Months Ended

Sep. 30, 2015

Regulatory Capital Requirements [Abstract]

Schedule of regulatory capital information for TCF and TCF Bank

The following table presents regulatory capital information for TCF and TCF Bank. Information presented for September 30, 2015 reflects the transition to the Basel III capital standard from previous regulatory capital adequacy guidelines under the Basel I framework. The Basel III capital standard phases in through 2019 and revises the definition of capital, increases minimum capital ratios, introduces regulatory capital buffers above those minimums, introduces a common equity Tier 1 capital ratio and revises the rules for calculating risk-weighted assets. Banks that are not advanced approaches institutions may make a one-time election to opt out of the requirement to include components of accumulated other comprehensive income (loss) in common equity Tier 1 capital. TCF has elected to opt-out of the accumulated other comprehensive income (loss) requirement.

	TCF						TCF Bank
(Dollars in thousands)	September 30, 2015			December 31, 2014			September 30, 2015			December 31, 2014			Well-capitalized Standard		Minimum Capital Requirement
Regulatory Capital:
Common equity Tier 1 capital	$	1,774,729		N.A.			$	1,952,196		N.A.
Tier 1 capital	2,054,711			$	1,919,887		1,970,696			$	1,836,019
Total capital	2,446,551			2,209,999			2,385,498			2,126,131
Regulatory Capital Ratios:
Common equity Tier 1 capital ratio	10.04		%	N.A			11.04		%	N.A.			6.50	%	4.50	%
Tier 1 risk-based capital ratio	11.62			11.76		%	11.15			11.25		%	8.00		6.00
Total risk-based capital ratio	13.84			13.54			13.49			13.03			10.00		8.00
Tier 1 leverage ratio	10.43			10.07			10.01			9.63			5.00		4.00

N.A. Not Applicable.

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Basis of Presentation

9 Months Ended

Sep. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Basis of Presentation

TCF Financial Corporation, a Delaware corporation ("we," "us," "our," "TCF," or the "Company"), is a national bank holding company based in Wayzata, Minnesota. Unless otherwise indicated, references herein to "TCF" include its direct and indirect subsidiaries. Its principal subsidiary, TCF National Bank ("TCF Bank"), is headquartered in South Dakota. References herein to "TCF Financial" refer to TCF Financial Corporation on an unconsolidated basis.

The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all of the information and notes necessary for complete financial statements in conformity with generally accepted accounting principles in the United States ("GAAP"). The information in this Quarterly Report on Form 10-Q is written with the presumption that the users of the interim financial statements have read or have access to the Company's most recent Annual Report on Form 10-K, which contains the latest audited financial statements and notes thereto, together with Management's Discussion and Analysis of Financial Condition and Results of Operations at December 31, 2014, and for the year then ended. All significant intercompany accounts and transactions have been eliminated in consolidation. Certain reclassifications have been made to prior period financial statements to conform to the current period presentation. Accounting policies in effect at December 31, 2014 remain significantly unchanged and have been followed similarly as in previous periods.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses during the reporting period. These estimates are based on information available to management at the time the estimates are made. Actual results could differ from those estimates. In the opinion of management, the accompanying unaudited consolidated financial statements contain all significant adjustments, consisting of normal recurring items, considered necessary for fair presentation. The results of operations for interim periods are not necessarily indicative of the results to be expected for the entire year.

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Stock Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Restricted stock and stock option transactions under the Company Financial Incentive Stock Program

The following table reflects TCF's restricted stock and stock option transactions under the TCF Financial Incentive Stock Program ("Incentive Stock Program") and TCF Financial 2015 Omnibus Incentive Plan during the nine months ended September 30, 2015.

	Restricted Stock									Stock Options
	Shares		Price Range					Weighted- Average Grant Date Fair Value		Shares		Price Range					Weighted- Average Remaining Contractual Life in Years	Weighted- Average Exercise Price
Outstanding at December 31, 2014	2,858,494		$	6.16	-	$	16.02	$	12.73	1,579,000		$	12.85	-	$	15.75	2.98	$	13.91
Granted	711,683		14.17		-	16.28		14.49		—		—		-	—		—	—
Exercised	—		—		-	—		—		(200,000	)	12.85		-	12.85		—	12.85
Forfeited/canceled	(130,632	)	6.80		-	15.96		13.18		—		—		-	—		—	—
Vested	(201,809	)	9.65		-	15.96		13.21		—		—		-	—		—	—
Outstanding at September 30, 2015	3,237,736		6.16		-	16.28		13.06		1,379,000		12.85		-	15.75		2.42	14.07
Exercisable at September 30, 2015	N.A.							N.A.		1,379,000		12.85		-	15.75			14.07

N.A. Not Applicable

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Securities Available for Sale and Securities Held to Maturity (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Securities available for sale:
Amortized Cost	$ 778,360,000		$ 778,360,000		$ 461,630,000
Gross Unrealized Gains	5,525,000		5,525,000		2,405,000
Gross Unrealized Losses	890,000		890,000		741,000
Fair Value	$ 782,995,000		$ 782,995,000		$ 463,294,000
Weighted-average yield	2.36%		2.36%		2.62%
Available-for-sale securities sold during period	$ 200,000		$ 200,000
Proceeds from sales of securities	200,000		177,000	$ 2,813,000
Gross gains recognized on sales of securities		$ 29,000		1,200,000
Impairment charges			0	0
Securities held to maturity:
Amortized Cost	204,129,000		204,129,000		$ 214,454,000
Gross Unrealized Gains	8,011,000		8,011,000		7,988,000
Gross Unrealized Losses	131,000		131,000		109,000
Fair Value	$ 212,009,000		$ 212,009,000		$ 222,333,000
Weighted-average yield	2.65%		2.65%		2.64%
Unrealized holding loss on the transferred securities retained in accumulated other comprehensive income			$ 15,100,000		$ 16,000,000
Impairment charge on held to maturity securities			300,000	100,000
Mortgage-backed securities:
Securities available for sale:
Securities available for sale pledged as collateral	$ 42,400,000		42,400,000		8,200,000
Securities held to maturity:
Value of available for sale mortgage-backed securities transferred to held to maturity	0	191,700,000	0	191,700,000
U.S. Government sponsored enterprises and federal agencies
Securities available for sale:
Amortized Cost	615,798,000		615,798,000		461,575,000
Gross Unrealized Gains	3,318,000		3,318,000		2,405,000
Gross Unrealized Losses	886,000		886,000		741,000
Fair Value	618,230,000		618,230,000		463,239,000
Securities held to maturity:
Amortized Cost	199,552,000		199,552,000		209,538,000
Gross Unrealized Gains	8,011,000		8,011,000		7,988,000
Gross Unrealized Losses	131,000		131,000		109,000
Fair Value	207,432,000		207,432,000		217,417,000
Mortgage-backed securities, Other
Securities available for sale:
Amortized Cost	38,000		38,000		55,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	0		0		0
Fair Value	38,000		38,000		55,000
Obligations of states and political subdivisions
Securities available for sale:
Amortized Cost	162,524,000		162,524,000		0
Gross Unrealized Gains	2,207,000		2,207,000		0
Gross Unrealized Losses	4,000		4,000		0
Fair Value	164,727,000		164,727,000		0
Other securities
Securities held to maturity:
Amortized Cost	4,577,000	$ 5,000,000	4,577,000	$ 5,000,000	4,916,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	0		0		0
Fair Value	$ 4,577,000		$ 4,577,000		$ 4,916,000

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Allowance for Loan and Lease Losses and Credit Quality Information (Details 7) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Impaired Loans
Unpaid Contractual Balance	$ 335,663		$ 335,663		$ 399,316
Loan Balance	260,817		260,817		319,659
Related Allowance Recorded	28,088		28,088		34,378
Average Loan Balance	265,877	$ 762,645	290,238	$ 783,705
Interest Income Recognized	3,702	7,027	11,364	20,649
Impaired loans with an allowance recorded
Impaired Loans
Unpaid Contractual Balance	251,615		251,615		251,291
Loan Balance	215,815		215,815		224,535
Related Allowance Recorded	28,088		28,088		34,378
Average Loan Balance	219,204	635,037	220,174	648,356
Interest Income Recognized	2,627	4,960	7,286	15,748
Impaired loans with an allowance recorded | Consumer real estate
Impaired Loans
Unpaid Contractual Balance	219,990		219,990		179,939
Loan Balance	184,433		184,433		157,073
Related Allowance Recorded	24,379		24,379		27,567
Average Loan Balance	186,724	561,555	170,752	564,438
Interest Income Recognized	2,419	4,362	6,417	13,787
Impaired loans with an allowance recorded | First mortgage lien
Impaired Loans
Unpaid Contractual Balance	148,772		148,772		114,526
Loan Balance	125,063		125,063		101,668
Related Allowance Recorded	17,886		17,886		18,140
Average Loan Balance	126,426	491,424	113,365	494,448
Interest Income Recognized	1,513	3,537	3,971	11,169
Impaired loans with an allowance recorded | Junior lien
Impaired Loans
Unpaid Contractual Balance	71,218		71,218		65,413
Loan Balance	59,370		59,370		55,405
Related Allowance Recorded	6,493		6,493		9,427
Average Loan Balance	60,298	70,131	57,387	69,990
Interest Income Recognized	906	825	2,446	2,618
Impaired loans with an allowance recorded | Total commercial
Impaired Loans
Unpaid Contractual Balance	17,897		17,897		58,175
Loan Balance	17,890		17,890		54,430
Related Allowance Recorded	509		509		3,773
Average Loan Balance	19,201	62,104	36,160	70,078
Interest Income Recognized	174	589	777	1,826
Impaired loans with an allowance recorded | Commercial real estate
Impaired Loans
Unpaid Contractual Balance	17,881		17,881		58,157
Loan Balance	17,874		17,874		54,412
Related Allowance Recorded	506		506		3,772
Average Loan Balance	19,183	60,981	36,143	67,587
Interest Income Recognized	174	589	777	1,826
Impaired loans with an allowance recorded | Commercial business
Impaired Loans
Unpaid Contractual Balance	16		16		18
Loan Balance	16		16		18
Related Allowance Recorded	3		3		1
Average Loan Balance	18	1,123	17	2,491
Interest Income Recognized	0	0	0	0
Impaired loans with an allowance recorded | Leasing and Equipment Finance
Impaired Loans
Unpaid Contractual Balance	5,990		5,990		8,257
Loan Balance	5,990		5,990		8,257
Related Allowance Recorded	751		751		1,457
Average Loan Balance	6,084	7,913	7,123	7,902
Interest Income Recognized	8	2	16	54
Impaired loans with an allowance recorded | Inventory Finance
Impaired Loans
Unpaid Contractual Balance	1,293		1,293		1,754
Loan Balance	1,299		1,299		1,758
Related Allowance Recorded	211		211		393
Average Loan Balance	1,869	2,114	1,529	4,846
Interest Income Recognized	17	6	66	77
Impaired loans with an allowance recorded | Auto Finance
Impaired Loans
Unpaid Contractual Balance	6,426		6,426		3,074
Loan Balance	6,185		6,185		2,928
Related Allowance Recorded	2,235		2,235		1,184
Average Loan Balance	5,309	1,262	4,557	999
Interest Income Recognized	8	0	8	0
Impaired loans with an allowance recorded | Other
Impaired Loans
Unpaid Contractual Balance	19		19		92
Loan Balance	18		18		89
Related Allowance Recorded	3		3		4
Average Loan Balance	17	89	53	93
Interest Income Recognized	1	1	2	4
Impaired loans without an allowance recorded
Impaired Loans
Unpaid Contractual Balance	84,048		84,048		148,025
Loan Balance	45,002		45,002		95,124
Average Loan Balance	46,673	127,608	70,064	135,349
Interest Income Recognized	1,075	2,067	4,078	4,901
Impaired loans without an allowance recorded | Consumer real estate
Impaired Loans
Unpaid Contractual Balance	36,388		36,388		87,402
Loan Balance	6,249		6,249		42,545
Average Loan Balance	5,919	58,825	24,397	61,753
Interest Income Recognized	546	1,351	2,322	2,625
Impaired loans without an allowance recorded | First mortgage lien
Impaired Loans
Unpaid Contractual Balance	9,802		9,802		53,606
Loan Balance	5,698		5,698		35,147
Average Loan Balance	5,633	54,008	20,422	56,230
Interest Income Recognized	138	991	919	1,726
Impaired loans without an allowance recorded | Junior lien
Impaired Loans
Unpaid Contractual Balance	26,586		26,586		33,796
Loan Balance	551		551		7,398
Average Loan Balance	286	4,817	3,975	5,523
Interest Income Recognized	408	360	1,403	899
Impaired loans without an allowance recorded | Total commercial
Impaired Loans
Unpaid Contractual Balance	45,198		45,198		58,291
Loan Balance	37,148		37,148		50,980
Average Loan Balance	39,123	67,276	44,065	72,891
Interest Income Recognized	507	707	1,679	2,222
Impaired loans without an allowance recorded | Commercial real estate
Impaired Loans
Unpaid Contractual Balance	41,452		41,452		57,809
Loan Balance	33,475		33,475		50,500
Average Loan Balance	37,109	63,619	41,988	69,944
Interest Income Recognized	507	690	1,674	2,128
Impaired loans without an allowance recorded | Commercial business
Impaired Loans
Unpaid Contractual Balance	3,746		3,746		482
Loan Balance	3,673		3,673		480
Average Loan Balance	2,014	3,657	2,077	2,947
Interest Income Recognized	0	17	5	94
Impaired loans without an allowance recorded | Inventory Finance
Impaired Loans
Unpaid Contractual Balance	533		533		848
Loan Balance	535		535		851
Average Loan Balance	497	832	693	265
Interest Income Recognized	22	9	77	54
Impaired loans without an allowance recorded | Auto Finance
Impaired Loans
Unpaid Contractual Balance	1,929		1,929		1,484
Loan Balance	1,070		1,070		$ 748
Average Loan Balance	1,134	675	909	440
Interest Income Recognized	$ 0	$ 0	$ 0	$ 0

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Accumulated Other Comprehensive Income (Loss) (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Changes in accumulated other comprehensive income by component
Comprehensive income at the beginning of the period	$ (16,370)	$ (14,915)	$ (10,910)	$ (27,213)
Other comprehensive income (loss)	4,936	(1,453)	(877)	11,252
Amounts reclassified from accumulated other comprehensive income (loss)	167	152	520	(255)
Total other comprehensive income (loss)	5,103	(1,301)	(357)	10,997
Comprehensive income at the end of the period	(11,267)	(16,216)	(11,267)	(16,216)
Securities Available for Sale
Changes in accumulated other comprehensive income by component
Comprehensive income at the beginning of the period	(12,881)	(14,587)	(8,891)	(26,983)
Other comprehensive income (loss)	6,206	(538)	1,849	12,251
Amounts reclassified from accumulated other comprehensive income (loss)	175	160	542	(233)
Total other comprehensive income (loss)	6,381	(378)	2,391	12,018
Comprehensive income at the end of the period	(6,500)	(14,965)	(6,500)	(14,965)
Net Investment Hedges
Changes in accumulated other comprehensive income by component
Comprehensive income at the beginning of the period	4,349	484	2,536	591
Other comprehensive income (loss)	1,779	1,151	3,592	1,044
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Total other comprehensive income (loss)	1,779	1,151	3,592	1,044
Comprehensive income at the end of the period	6,128	1,635	6,128	1,635
Foreign Currency Translation Adjustment
Changes in accumulated other comprehensive income by component
Comprehensive income at the beginning of the period	(8,029)	(1,033)	(4,760)	(1,056)
Other comprehensive income (loss)	(3,049)	(2,066)	(6,318)	(2,043)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Total other comprehensive income (loss)	(3,049)	(2,066)	(6,318)	(2,043)
Comprehensive income at the end of the period	(11,078)	(3,099)	(11,078)	(3,099)
Recognized Postretirement Prior Service Cost
Changes in accumulated other comprehensive income by component
Comprehensive income at the beginning of the period	191	221	205	235
Other comprehensive income (loss)	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	(8)	(8)	(22)	(22)
Total other comprehensive income (loss)	(8)	(8)	(22)	(22)
Comprehensive income at the end of the period	$ 183	$ 213	$ 183	$ 213

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Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets:
Cash and due from banks	$ 786,064	$ 1,115,250
Investments	76,543	85,492
Securities held to maturity	204,129	214,454
Securities available for sale	782,995	463,294
Loans and leases held for sale	116,155	132,266
Consumer real estate:
First mortgage lien	2,724,594	3,139,152
Junior lien	2,889,120	2,543,212
Total consumer real estate	5,613,714	5,682,364
Commercial	3,112,325	3,157,665
Leasing and equipment finance	3,873,581	3,745,322
Inventory finance	2,153,385	1,877,090
Auto finance	2,427,367	1,915,061
Other	20,674	24,144
Total loans and leases	17,201,046	16,401,646
Allowance for loan and lease losses	(153,962)	(164,169)
Net loans and leases	17,047,084	16,237,477
Premises and equipment, net	445,041	436,361
Goodwill	225,640	225,640
Other assets	442,285	484,377
Total assets	20,125,936	19,394,611
Deposits:
Checking	5,378,024	5,195,243
Savings	4,774,766	5,212,320
Money market	2,293,390	1,993,130
Certificates of deposit	3,612,253	3,049,189
Total deposits	16,058,433	15,449,882
Short-term borrowings	36,509	4,425
Long-term borrowings	1,184,166	1,232,065
Total borrowings	1,220,675	1,236,490
Accrued expenses and other liabilities	573,681	572,875
Total liabilities	17,852,789	17,259,247
Equity:
Preferred stock, par value $0.01 per share, 30,000,000 shares authorized; 4,006,900 issued	263,240	263,240
Common stock, par value $0.01 per share, 280,000,000 shares authorized; 169,473,142 and 167,503,568 shares issued, respectively	1,695	1,675
Additional paid-in capital	846,243	817,130
Retained earnings, subject to certain restrictions	1,205,179	1,099,914
Accumulated other comprehensive income (loss)	(11,267)	(10,910)
Treasury stock at cost, 42,566 shares, and other	(50,443)	(49,400)
Total TCF Financial Corporation stockholders' equity	2,254,647	2,121,649
Non-controlling interest in subsidiaries	18,500	13,715
Total equity	2,273,147	2,135,364
Total liabilities and equity	$ 20,125,936	$ 19,394,611

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Loans and Leases (Details 2) - Consumer Borrower - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Consumer Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sales proceeds, net	$ 898,387,000	$ 827,831,000
Recorded investment in loans sold, including accrued interest	(878,468,000)	(808,627,000)
Interest-only strips, initial value	6,948,000	9,135,000
Net gains	26,867,000	28,339,000
Auto Finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sales proceeds, net	1,113,036,000	989,811,000
Recorded investment in loans sold, including accrued interest	(1,084,348,000)	(970,444,000)
Interest-only strips, initial value	0	12,137,000
Net gains	28,688,000	31,504,000
Correspondent Lending | Consumer Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans sold, including accrued interest	(212,900,000)	$ 0
Net gains	$ 4,700,000

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Consolidated Statements of Equity - USD ($) $ in Thousands	Total	TCF Financial Corporation	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock and Other	Non-controlling Interests
Balance at Dec. 31, 2013	$ 1,964,759	$ 1,952,968	$ 263,240	$ 1,652	$ 779,641	$ 977,846	$ (27,213)	$ (42,198)	$ 11,791
Balance (in shares) at Dec. 31, 2013			4,006,900	165,164,861
Increase (Decrease) in Equity
Net income attributable to TCF Financial Corporation	156,140	150,199				150,199			5,941
Other comprehensive income (loss)	10,997	10,997					10,997
Net investment by (distribution to) non-controlling interest	(2,887)								(2,887)
Dividends on preferred stock	(14,541)	(14,541)				(14,541)
Dividends on common stock	(24,512)	(24,512)				(24,512)
Grants of restricted stock				$ 11	(11)
Grants of restricted stock (in shares)				1,110,706
Common shares purchased by TCF employee benefit plans	17,802	17,802		$ 11	17,791
Common shares purchased by TCF employee benefit plans (in shares)				1,109,887
Cancellation of shares of restricted stock	(327)	(327)		$ (1)	(326)
Cancellation of shares of restricted stock (in shares)				(70,790)
Cancellation of common shares for tax withholding	(3,262)	(3,262)		$ (2)	(3,260)
Cancellation of common shares for tax withholding (in shares)				(200,943)
Net amortization of stock compensation	7,141	7,141			7,141
Exercise of stock options	740	740		$ 1	739
Exercise of stock options (in shares)				47,000
Stock compensation tax (expense) benefit	1,382	1,382			1,382
Change in shares held in trust for deferred compensation plans, at cost					6,681			(6,681)
Balance (in shares) at Sep. 30, 2014			4,006,900	167,160,721
Balance at Sep. 30, 2014	2,113,432	2,098,587	$ 263,240	$ 1,672	809,778	1,088,992	(16,216)	(48,879)	14,845
Balance at Dec. 31, 2014	2,135,364	2,121,649	$ 263,240	$ 1,675	817,130	1,099,914	(10,910)	(49,400)	13,715
Balance (in shares) at Dec. 31, 2014			4,006,900	167,503,568
Increase (Decrease) in Equity
Net income attributable to TCF Financial Corporation	151,303	144,631				144,631			6,672
Other comprehensive income (loss)	(357)	(357)					(357)
Net investment by (distribution to) non-controlling interest	(1,887)								(1,887)
Dividends on preferred stock	(14,541)	(14,541)				(14,541)
Dividends on common stock	(24,825)	(24,825)				(24,825)
Grants of restricted stock				$ 8	(8)
Grants of restricted stock (in shares)				753,054
Common shares purchased by TCF employee benefit plans	19,273	19,273		$ 12	19,261
Common shares purchased by TCF employee benefit plans (in shares)				1,219,012
Cancellation of shares of restricted stock	(541)	(541)		$ (1)	(540)
Cancellation of shares of restricted stock (in shares)				(133,822)
Cancellation of common shares for tax withholding	(1,094)	(1,094)		$ (1)	(1,093)
Cancellation of common shares for tax withholding (in shares)				(68,670)
Net amortization of stock compensation	7,520	7,520			7,520
Exercise of stock options	2,570	2,570		$ 2	2,568
Exercise of stock options (in shares)				200,000
Stock compensation tax (expense) benefit	362	362			362
Change in shares held in trust for deferred compensation plans, at cost					1,043			(1,043)
Balance (in shares) at Sep. 30, 2015			4,006,900	169,473,142
Balance at Sep. 30, 2015	$ 2,273,147	$ 2,254,647	$ 263,240	$ 1,695	$ 846,243	$ 1,205,179	$ (11,267)	$ (50,443)	$ 18,500

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Employee Benefit Plans (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Pension Plan
Net periodic benefit cost included in compensation and employee benefits expense
Interest cost	$ 303,000	$ 397,000	$ 911,000	$ 1,191,000
Return on plan assets	(159,000)	(183,000)	(479,000)	(549,000)
Net periodic benefit plan (income) cost	144,000	214,000	432,000	642,000
Contributions to the plan during the period	0	0	0	0
Postretirement Plan
Net periodic benefit cost included in compensation and employee benefits expense
Interest cost	39,000	49,000	115,000	148,000
Amortization of prior service cost	(12,000)	(12,000)	(35,000)	(35,000)
Net periodic benefit plan (income) cost	27,000	37,000	80,000	113,000
Benefits paid during the period	$ 100,000	$ 100,000	$ 300,000	$ 300,000

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Fair Values Disclosures (Tables)

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

Balances of assets and liabilities measured at fair value on a recurring and non-recurring basis

The following tables present the balances of assets and liabilities measured at fair value on a recurring and non-recurring basis.

	Fair Value Measurements at September 30, 2015
(In thousands)	Level 1		Level 2		Level 3		Total
Recurring Fair Value Measurements:
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	618,230	$	—	$	618,230
Other	—		—		38		38
Obligations of states and political subdivisions	—		164,727		—		164,727
Loans and leases held for sale	—		—		5,805		5,805
Forward foreign exchange contracts(1)	—		2,833		—		2,833
Interest rate contracts(1)	—		4,539		—		4,539
Interest rate lock commitments(1)	—		—		643		643
Forward loan sales commitments	—		—		26		26
Assets held in trust for deferred compensation plans	18,635		—		—		18,635
Total assets	$	18,635	$	790,329	$	6,512	$	815,476
Forward foreign exchange contracts(1)	$	—	$	348	$	—	$	348
Interest rate contracts(1)	—		2,624		—		2,624
Forward loan sales commitments	—		—		44		44
Liabilities held in trust for deferred compensation plans	18,635		—		—		18,635
Other contracts(1)	—		—		386		386
Total liabilities	$	18,635	$	2,972	$	430	$	22,037
Non-recurring Fair Value Measurements:
Securities held to maturity	$	—	$	—	$	1,177	$	1,177
Loans	—		—		140,535		140,535
Interest-only strips	—		—		7,578		7,578
Other real estate owned:
Consumer	—		—		40,139		40,139
Commercial	—		—		3,586		3,586
Repossessed and returned assets	—		3,431		1,458		4,889
Total non-recurring fair value measurements	$	—	$	3,431	$	194,473	$	197,904

(1) As permitted under GAAP, TCF has elected to net derivative receivables and derivative payables when a legally enforceable master netting agreement exists as well as the related cash collateral received and paid. For purposes of this table, the derivative receivable and derivative payable balances are presented gross of this netting adjustment.

	Fair Value Measurements at December 31, 2014
(In thousands)	Level 1		Level 2		Level 3		Total
Recurring Fair Value Measurements:
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	463,239	$	—	$	463,239
Other	—		—		55		55
Loans and leases held for sale	—		—		3,308		3,308
Forward foreign exchange contracts(1)	—		3,211		—		3,211
Interest rate contracts(1)	—		1,798		—		1,798
Interest rate lock commitments(1)	—		—		285		285
Forward loan sales commitments	—		—		19		19
Assets held in trust for deferred compensation plans	18,703		—		—		18,703
Total assets	$	18,703	$	468,248	$	3,667	$	490,618
Forward foreign exchange contracts(1)	$	—	$	177	$	—	$	177
Interest rate contracts(1)	—		1,877		—		1,877
Forward loan sales commitments	—		—		42		42
Liabilities held in trust for deferred compensation plans	18,703		—		—		18,703
Other contracts(1)	—		—		621		621
Total liabilities	$	18,703	$	2,054	$	663	$	21,420
Non-recurring Fair Value Measurements:
Securities held to maturity	$	—	$	—	$	1,516	$	1,516
Loans	—		—		164,897		164,897
Interest-only strips	—		—		41,204		41,204
Other real estate owned:
Consumer	—		—		40,502		40,502
Commercial	—		4,839		8,866		13,705
Repossessed and returned assets	—		1,563		1,425		2,988
Total non-recurring fair value measurements	$	—	$	6,402	$	258,410	$	264,812

(1) As permitted under GAAP, TCF has elected to net derivative receivables and derivative payables when a legally enforceable master netting agreement exists as well as the related cash collateral received and paid. For purposes of this table, the derivative receivable and derivative payable balances are presented gross of this netting adjustment.

Schedule of reconciliation of the net derivative assets and liabilities measured at fair value on a recurring basis

The following table presents changes in Level 3 assets and liabilities measured at fair value on a recurring basis.

(In thousands)	Securities Available for Sale			Loans and Leases Held for Sale			Interest Rate Lock Commitments		Forward Loan Sales Commitments			Other Contracts
At or For the Three Months Ended September 30, 2015:
Asset (liability) balance, beginning of period	$	45		$	4,962		$	455	$	(5	)	$	(465	)
Total net gains (losses) included in:
Net income	—			18			188		(13		)	—
Sales	—			(76,677		)	—		—			—
Originations	—			77,502			—		—			—
Principal paydowns / settlements	(7		)	—			—		—			79
Asset (liability) balance, end of period	$	38		$	5,805		$	643	$	(18	)	$	(386	)
At or For the Three Months Ended September 30, 2014:
Asset (liability) balance, beginning of period	$	81		$	—		$	—	$	—		$	(737	)
Total net gains (losses) included in:
Net income	344			—			—		—			(15		)
Principal paydowns / settlements	(17		)	—			—		—			83
Asset (liability) balance, end of period	$	408		$	—		$	—	$	—		$	(669	)

(In thousands)	Securities Available for Sale			Loans and Leases Held for Sale			Interest Rate Lock Commitments		Forward Loan Sales Commitments			Other Contracts
At or For the Nine Months Ended September 30, 2015:
Asset (liability) balance, beginning of period	$	55		$	3,308		$	285	$	(23	)	$	(621	)
Total net gains (losses) included in:
Net income	—			50			358		5			—
Sales	—			(212,940		)	—		—			—
Originations	—			215,387			—		—			—
Principal paydowns / settlements	(17		)	—			—		—			235
Asset (liability) balance, end of period	$	38		$	5,805		$	643	$	(18	)	$	(386	)
At or For the Nine Months Ended September 30, 2014:
Asset (liability) balance, beginning of period	$	93		$	—		$	—	$	—		$	(899	)
Total net gains (losses) included in:
Net income	344			—			—		—			(15		)
Principal paydowns / settlements	(29		)	—			—		—			245
Asset (liability) balance, end of period	$	408		$	—		$	—	$	—		$	(669	)

Schedule of reconciliation of the assets measured at fair value on a recurring basis

The following table presents changes in Level 3 assets and liabilities measured at fair value on a recurring basis.

(In thousands)	Securities Available for Sale			Loans and Leases Held for Sale			Interest Rate Lock Commitments		Forward Loan Sales Commitments			Other Contracts
At or For the Three Months Ended September 30, 2015:
Asset (liability) balance, beginning of period	$	45		$	4,962		$	455	$	(5	)	$	(465	)
Total net gains (losses) included in:
Net income	—			18			188		(13		)	—
Sales	—			(76,677		)	—		—			—
Originations	—			77,502			—		—			—
Principal paydowns / settlements	(7		)	—			—		—			79
Asset (liability) balance, end of period	$	38		$	5,805		$	643	$	(18	)	$	(386	)
At or For the Three Months Ended September 30, 2014:
Asset (liability) balance, beginning of period	$	81		$	—		$	—	$	—		$	(737	)
Total net gains (losses) included in:
Net income	344			—			—		—			(15		)
Principal paydowns / settlements	(17		)	—			—		—			83
Asset (liability) balance, end of period	$	408		$	—		$	—	$	—		$	(669	)

(In thousands)	Securities Available for Sale			Loans and Leases Held for Sale			Interest Rate Lock Commitments		Forward Loan Sales Commitments			Other Contracts
At or For the Nine Months Ended September 30, 2015:
Asset (liability) balance, beginning of period	$	55		$	3,308		$	285	$	(23	)	$	(621	)
Total net gains (losses) included in:
Net income	—			50			358		5			—
Sales	—			(212,940		)	—		—			—
Originations	—			215,387			—		—			—
Principal paydowns / settlements	(17		)	—			—		—			235
Asset (liability) balance, end of period	$	38		$	5,805		$	643	$	(18	)	$	(386	)
At or For the Nine Months Ended September 30, 2014:
Asset (liability) balance, beginning of period	$	93		$	—		$	—	$	—		$	(899	)
Total net gains (losses) included in:
Net income	344			—			—		—			(15		)
Principal paydowns / settlements	(29		)	—			—		—			245
Asset (liability) balance, end of period	$	408		$	—		$	—	$	—		$	(669	)

Fair value, option, quantitative disclosures

The following table presents the difference between the aggregate fair value and aggregate unpaid principal balance of these loans held for sale.

(In thousands)	At September 30, 2015		At December 31, 2014
Fair value carrying amount	$	5,805	$	3,308
Aggregate unpaid principal amount	5,641		3,205
Fair value carrying amount less aggregate unpaid principal	$	164	$	103

Fair value of assets and liabilities, including hierarchy level

The following tables present the carrying amounts and estimated fair values of the Company's financial instruments, excluding short-term financial assets and liabilities as their carrying amounts approximate fair value and excluding financial instruments recorded at fair value on a recurring basis. This information represents only a portion of TCF's balance sheet and not the estimated value of the Company as a whole. Non-financial instruments such as the intangible value of TCF's branches and core deposits, leasing operations, goodwill, premises and equipment and the future revenues from TCF's customers are not reflected in this disclosure. Therefore, this information is of limited use in assessing the value of TCF.

	Carrying Amount			Estimated Fair Value at September 30, 2015
(In thousands)				Level 1		Level 2			Level 3		Total
Financial instrument assets:
Investments	$	76,543		$	—	$	76,543		$	—	$	76,543
Securities held to maturity	204,129			—		207,432			4,577		212,009
Loans and leases held for sale	116,155			—		—			123,926		123,926
Loans:
Consumer real estate	5,613,714			—		—			5,728,048		5,728,048
Commercial real estate	2,561,828			—		—			2,507,532		2,507,532
Commercial business	550,497			—		—			528,109		528,109
Equipment finance	1,858,265			—		—			1,847,767		1,847,767
Inventory finance	2,153,385			—		—			2,139,272		2,139,272
Auto finance	2,427,367			—		—			2,442,324		2,442,324
Other	20,674			—		—			16,619		16,619
Allowance for loan losses(1)	(153,962		)	—		—			—		—
Interest-only strips(2)	50,699			—		—			54,066		54,066
Total financial instrument assets	$	15,479,294		$	—	$	283,975		$	15,392,240	$	15,676,215
Financial instrument liabilities:
Deposits	$	16,058,433		$	12,446,180	$	3,631,649		$	—	$	16,077,829
Long-term borrowings	1,184,166			—		1,187,433			5,409		1,192,842
Total financial instrument liabilities	$	17,242,599		$	12,446,180	$	4,819,082		$	5,409	$	17,270,671
Financial instruments with off-balance sheet risk:(3)
Commitments to extend credit	$	24,582		$	—	$	24,582		$	—	$	24,582
Standby letters of credit	(32		)	—		(32		)	—		(32		)
Total financial instruments with off-balance sheet risk	$	24,550		$	—	$	24,550		$	—	$	24,550

(1) Expected credit losses are included in the estimated fair values.

(2) Carrying amounts are included in other assets.

(3) Positive amounts represent assets, negative amounts represent liabilities.

	Carrying Amount			Estimated Fair Value at December 31, 2014
(In thousands)				Level 1		Level 2			Level 3		Total
Financial instrument assets:
Investments	$	85,492		$	—	$	85,492		$	—	$	85,492
Securities held to maturity	214,454			—		217,418			4,916		222,334
Loans and leases held for sale	132,266			—		—			139,370		139,370
Loans:
Consumer real estate	5,682,364			—		—			5,836,770		5,836,770
Commercial real estate	2,624,255			—		—			2,575,625		2,575,625
Commercial business	533,410			—		—			512,083		512,083
Equipment finance	1,806,808			—		—			1,787,271		1,787,271
Inventory finance	1,877,090			—		—			1,864,786		1,864,786
Auto finance	1,915,061			—		—			1,927,384		1,927,384
Other	24,144			—		—			18,724		18,724
Allowance for loan losses(1)	(164,169		)	—		—			—		—
Interest-only strips(2)	69,789			—		—			73,058		73,058
Total financial instrument assets	$	14,800,964		$	—	$	302,910		$	14,739,987	$	15,042,897
Financial instrument liabilities:
Deposits	$	15,449,882		$	12,400,693	$	3,063,850		$	—	$	15,464,543
Long-term borrowings	1,232,065			—		1,246,221			8,054		1,254,275
Total financial instrument liabilities	$	16,681,947		$	12,400,693	$	4,310,071		$	8,054	$	16,718,818
Financial instruments with off-balance sheet risk:(3)
Commitments to extend credit	$	25,885		$	—	$	25,885		$	—	$	25,885
Standby letters of credit	(47		)	—		(47		)	—		(47		)
Total financial instruments with off-balance sheet risk	$	25,838		$	—	$	25,838		$	—	$	25,838

(1) Expected credit losses are included in the estimated fair values.

(2) Carrying amounts are included in other assets.

(3) Positive amounts represent assets, negative amounts represent liabilities.

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Fair Values Disclosures (Details 2) - Level 3 - Measurement of fair value on a recurring basis - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest rate lock commitments
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 455	$ 0	$ 285	$ 0
Net income	188	0	358	0
Sales	0		0
Originations	0		0
Principal paydowns / settlements	0	0	0	0
Ending balance	643	0	643	0
Forward loan sales commitments
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	(5)	0	(23)	0
Net income	(13)	0	5	0
Sales	0		0
Originations	0		0
Principal paydowns / settlements	0	0	0	0
Ending balance	(18)	0	(18)	0
Other Contract
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	(465)	(737)	(621)	(899)
Net income	0	(15)	0	(15)
Sales	0		0
Originations	0		0
Principal paydowns / settlements	79	83	235	245
Ending balance	(386)	(669)	(386)	(669)
Available-for-sale Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	45	81	55	93
Net income	0	344	0	344
Sales	0		0
Originations	0		0
Principal paydowns / settlements	(7)	(17)	(17)	(29)
Ending balance	38	408	38	408
Loans and leases held for sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	4,962	0	3,308	0
Net income	18	0	50	0
Sales	(76,677)		(212,940)
Originations	77,502		215,387
Principal paydowns / settlements	0	0	0	0
Ending balance	$ 5,805	$ 0	$ 5,805	$ 0

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Business Segments

9 Months Ended

Sep. 30, 2015

Segment Reporting [Abstract]

Business Segments

Business Segments

Lending, Funding and Support Services have been identified as reportable segments. Lending includes consumer real estate, commercial real estate and business lending, leasing and equipment finance, inventory finance and auto finance. Funding includes branch banking and treasury services. Support Services includes Holding Company and corporate functions that provide data processing, bank operations and other professional services to the operating segments.

TCF evaluates performance and allocates resources based on each segment's net income or loss. The business segments follow GAAP as described in Note 1, Summary of Significant Accounting Policies, in Item 8 of TCF's 2014 Annual Report on Form 10-K. TCF generally accounts for inter-segment sales and transfers at cost.

The following tables set forth certain information for each of TCF's reportable segments, including a reconciliation of TCF's consolidated totals.

(In thousands)	Lending		Funding			Support Services			Eliminations			Consolidated
At or For the Three Months Ended September 30, 2015:
Net interest income	$	155,130	$	51,356		$	14		$	(1,230	)	$	205,270
Provision for credit losses	9,101		917			—			—			10,018
Non-interest income	56,439		55,819			28,063			(28,069		)	112,252
Non-interest expense	115,503		106,353			28,497			(28,069		)	222,284
Income tax expense (benefit)	31,599		(7		)	166			(1,230		)	30,528
Income (loss) after income tax expense (benefit)	55,366		(88		)	(586		)	—			54,692
Income attributable to non-controlling interest	2,117		—			—			—			2,117
Preferred stock dividends	—		—			4,847			—			4,847
Net income (loss) available to common stockholders	$	53,249	$	(88	)	$	(5,433	)	$	—		$	47,728
Total assets	$	17,642,476	$	7,024,906		$	195,747		$	(4,737,193	)	$	20,125,936
Revenues from external customers:
Interest income	$	216,777	$	6,827		$	—		$	—		$	223,604
Non-interest income	56,439		55,807			6			—			112,252
Total	$	273,216	$	62,634		$	6		$	—		$	335,856
At or For the Three Months Ended September 30, 2014:
Net interest income	$	149,048	$	56,017		$	44		$	(929	)	$	204,180
Provision for credit losses	14,593		1,146			—			—			15,739
Non-interest income	58,432		57,453			34,232			(34,041		)	116,076
Non-interest expense	107,892		111,749			34,088			(34,041		)	219,688
Income tax expense (benefit)	31,525		236			(41		)	(929		)	30,791
Income (loss) after income tax expense (benefit)	53,470		339			229			—			54,038
Income attributable to non-controlling interest	1,721		—			—			—			1,721
Preferred stock dividends	—		—			4,847			—			4,847
Net income (loss) available to common stockholders	$	51,749	$	339		$	(4,618	)	$	—		$	47,470
Total assets	$	16,821,067	$	5,894,540		$	178,781		$	(3,872,285	)	$	19,022,103
Revenues from external customers:
Interest income	$	214,070	$	5,633		$	—		$	—		$	219,703
Non-interest income	58,432		57,438			206			—			116,076
Total	$	272,502	$	63,071		$	206		$	—		$	335,779

(In thousands)	Lending		Funding			Support Services			Eliminations			Consolidated
At or For the Nine Months Ended September 30, 2015:
Net interest income	$	464,478	$	153,073		$	85		$	(2,917	)	$	614,719
Provision for credit losses	33,680		1,657			—			—			35,337
Non-interest income	165,528		158,922			88,424			(86,535		)	326,339
Non-interest expense	342,533		326,727			89,435			(86,535		)	672,160
Income tax expense (benefit)	91,344		(5,949		)	(220		)	(2,917		)	82,258
Income (loss) after income tax expense (benefit)	162,449		(10,440		)	(706		)	—			151,303
Income attributable to non-controlling interest	6,672		—			—			—			6,672
Preferred stock dividends	—		—			14,541			—			14,541
Net income (loss) available to common stockholders	$	155,777	$	(10,440	)	$	(15,247	)	$	—		$	130,090
Total assets	$	17,642,476	$	7,024,906		$	195,747		$	(4,737,193	)	$	20,125,936
Revenues from external customers:
Interest income	$	647,878	$	18,601		$	—		$	—		$	666,479
Non-interest income	165,528		158,884			1,927			—			326,339
Total	$	813,406	$	177,485		$	1,927		$	—		$	992,818
At or For the Nine Months Ended September 30, 2014:
Net interest income	$	443,245	$	170,657		$	98		$	(2,445	)	$	611,555
Provision for credit losses	37,950		2,190			—			—			40,140
Non-interest income	156,921		165,082			102,013			(100,517		)	323,499
Non-interest expense	318,733		328,557			103,246			(100,517		)	650,019
Income tax expense (benefit)	89,275		1,938			(13		)	(2,445		)	88,755
Income (loss) after income tax expense (benefit)	154,208		3,054			(1,122		)	—			156,140
Income attributable to non-controlling interest	5,941		—			—			—			5,941
Preferred stock dividends	—		—			14,541			—			14,541
Net income (loss) available to common stockholders	$	148,267	$	3,054		$	(15,663	)	$	—		$	135,658
Total assets	$	16,821,067	$	5,894,540		$	178,781		$	(3,872,285	)	$	19,022,103
Revenues from external customers:
Interest income	$	637,851	$	16,570		$	—		$	—		$	654,421
Non-interest income	156,921		165,037			1,541			—			323,499
Total	$	794,772	$	181,607		$	1,541		$	—		$	977,920

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Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per common share

TCF's restricted stock awards that pay non-forfeitable common stock dividends meet the criteria of a participating security. Accordingly, earnings per share is calculated using the two-class method, under which earnings are allocated to both common shares and participating securities.

	Three Months Ended   September 30,				Nine Months Ended   September 30,
(Dollars in thousands, except per-share data)	2015		2014		2015		2014
Basic Earnings Per Common Share:
Net income available to common stockholders	$	47,728	$	47,470	$	130,090	$	135,658
Earnings allocated to participating securities	12		12		34		35
Earnings allocated to common stock	$	47,716	$	47,458	$	130,056	$	135,623
Weighted-average common shares outstanding for basic earnings per common share	165,990,432		163,901,076		165,479,029		163,310,983
Basic earnings per common share	$	0.29	$	0.29	$	0.79	$	0.83
Diluted Earnings Per Common Share:
Earnings allocated to common stock	$	47,716	$	47,458	$	130,056	$	135,623
Weighted-average common shares outstanding used in basic earnings per common share calculation	165,990,432		163,901,076		165,479,029		163,310,983
Net dilutive effect of:
Non-participating restricted stock	355,408		322,210		312,402		250,060
Stock options	210,280		256,325		221,908		262,286
Weighted-average common shares outstanding for diluted earnings per common share	166,556,120		164,479,611		166,013,339		163,823,329
Diluted earnings per common share	$	0.29	$	0.29	$	0.78	$	0.83

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Accumulated Other Comprehensive Income (Loss)

9 Months Ended

Sep. 30, 2015

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

The components of other comprehensive income (loss) and the related tax effects are presented in the table below.

	Three Months Ended September 30,
	2015									2014
(In thousands)	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax
Securities available for sale:
Unrealized gains (losses) arising during the period	$	9,972		$	(3,766	)	$	6,206		$	(862	)	$	324		$	(538	)
Reclassification of net (gains) losses to net income	281			(106		)	175			254			(94		)	160
Net unrealized gains (losses)	10,253			(3,872		)	6,381			(608		)	230			(378		)
Net investment hedges:
Unrealized gains (losses) arising during the period	2,858			(1,079		)	1,779			1,849			(698		)	1,151
Foreign currency translation adjustment:(1)
Unrealized gains (losses) arising during the period	(3,049		)	—			(3,049		)	(2,066		)	—			(2,066		)
Recognized postretirement prior service cost:
Reclassification of net (gains) losses to net income	(12		)	4			(8		)	(12		)	4			(8		)
Total other comprehensive income (loss)	$	10,050		$	(4,947	)	$	5,103		$	(837	)	$	(464	)	$	(1,301	)
	Nine Months Ended September 30,
	2015									2014
(In thousands)	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax
Securities available for sale:
Unrealized gains (losses) arising during the period	$	2,971		$	(1,122	)	$	1,849		$	19,652		$	(7,401	)	$	12,251
Reclassification of net (gains) losses to net income	871			(329		)	542			(375		)	142			(233		)
Net unrealized gains (losses)	3,842			(1,451		)	2,391			19,277			(7,259		)	12,018
Net investment hedges:
Unrealized gains (losses) arising during the period	5,772			(2,180		)	3,592			1,677			(633		)	1,044
Foreign currency translation adjustment:(1)
Unrealized gains (losses) arising during the period	(6,318		)	—			(6,318		)	(2,043		)	—			(2,043		)
Recognized postretirement prior service cost:
Reclassification of net (gains) losses to net income	(35		)	13			(22		)	(35		)	13			(22		)
Total other comprehensive income (loss)	$	3,261		$	(3,618	)	$	(357	)	$	18,876		$	(7,879	)	$	10,997

(1)  Foreign investments are deemed to be permanent in nature and therefore TCF does not provide for taxes on foreign currency translation adjustments.

Reclassifications of net (gains) losses to net income for securities available for sale were recorded in the Consolidated Statements of Income in gains (losses) on securities, net for sales of securities and in interest income for those securities that were previously transferred to held to maturity. See Note 3, Securities Available for Sale and Securities Held to Maturity, for additional information regarding the transfer. The tax effect of these reclassifications was recorded in income tax expense in the Consolidated Statements of Income. See Note 11, Employee Benefit Plans, for additional information regarding TCF's recognized postretirement prior service cost.

Accumulated other comprehensive income (loss) balances are presented in the table below.

(In thousands)	Securities Available for Sale			Net Investment Hedges		Foreign Currency Translation Adjustment			Recognized Postretirement Prior Service Cost			Total
At or For the Three Months Ended September 30, 2015:
Balance, beginning of period	$	(12,881	)	$	4,349	$	(8,029	)	$	191		$	(16,370	)
Other comprehensive income (loss)	6,206			1,779		(3,049		)	—			4,936
Amounts reclassified from accumulated other comprehensive income (loss)	175			—		—			(8		)	167
Net other comprehensive income (loss)	6,381			1,779		(3,049		)	(8		)	5,103
Balance, end of period	$	(6,500	)	$	6,128	$	(11,078	)	$	183		$	(11,267	)
At or For the Three Months Ended September 30, 2014:
Balance, beginning of period	$	(14,587	)	$	484	$	(1,033	)	$	221		$	(14,915	)
Other comprehensive income (loss)	(538		)	1,151		(2,066		)	—			(1,453		)
Amounts reclassified from accumulated other comprehensive income (loss)	160			—		—			(8		)	152
Net other comprehensive income (loss)	(378		)	1,151		(2,066		)	(8		)	(1,301		)
Balance, end of period	$	(14,965	)	$	1,635	$	(3,099	)	$	213		$	(16,216	)
(In thousands)	Securities Available for Sale			Net Investment Hedges		Foreign Currency Translation Adjustment			Recognized Postretirement Prior Service Cost			Total
At or For the Nine Months Ended September 30, 2015:
Balance, beginning of period	$	(8,891	)	$	2,536	$	(4,760	)	$	205		$	(10,910	)
Other comprehensive income (loss)	1,849			3,592		(6,318		)	—			(877		)
Amounts reclassified from accumulated other comprehensive income (loss)	542			—		—			(22		)	520
Net other comprehensive income (loss)	2,391			3,592		(6,318		)	(22		)	(357		)
Balance, end of period	$	(6,500	)	$	6,128	$	(11,078	)	$	183		$	(11,267	)
At or For the Nine Months Ended September 30, 2014:
Balance, beginning of period	$	(26,983	)	$	591	$	(1,056	)	$	235		$	(27,213	)
Other comprehensive income (loss)	12,251			1,044		(2,043		)	—			11,252
Amounts reclassified from accumulated other comprehensive income (loss)	(233		)	—		—			(22		)	(255		)
Net other comprehensive income (loss)	12,018			1,044		(2,043		)	(22		)	10,997
Balance, end of period	$	(14,965	)	$	1,635	$	(3,099	)	$	213		$	(16,216	)

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Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Basic Earnings Per Common Share:
Net income available to common stockholders	$ 47,728	$ 47,470	$ 130,090	$ 135,658
Earnings allocated to participating securities	12	12	34	35
Earnings allocated to common stock	$ 47,716	$ 47,458	$ 130,056	$ 135,623
Weighted-average common shares outstanding for basic earnings per common share (in shares)	165,990,432	163,901,076	165,479,029	163,310,983
Basic earnings per common share (in dollars per share)	$ 0.29	$ 0.29	$ 0.79	$ 0.83
Diluted Earnings Per Common Share:
Earnings allocated to common stock	$ 47,716	$ 47,458	$ 130,056	$ 135,623
Weighted-average common shares outstanding used in basic earnings per common share calculation (in shares)	165,990,432	163,901,076	165,479,029	163,310,983
Net dilutive effect of:
Non-participating restricted stock (in shares)	355,408	322,210	312,402	250,060
Stock options (in shares)	210,280	256,325	221,908	262,286
Weighted-average common shares outstanding for diluted earnings per common share (in shares)	166,556,120	164,479,611	166,013,339	163,823,329
Diluted earnings per common share (in dollars per share)	$ 0.29	$ 0.29	$ 0.78	$ 0.83

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income attributable to TCF Financial Corporation	$ 144,631	$ 150,199
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	35,337	40,140
Depreciation and amortization	111,284	95,428
Proceeds from sales of loans and leases held for sale	751,200	373,429
Gains on sales of assets, net	(62,256)	(60,784)
Net income attributable to non-controlling interest	6,672	5,941
Originations of loans held for sale, net of repayments	(704,018)	(451,304)
Net change in other assets and accrued expenses and other liabilities	72,747	66,434
Other, net	(22,915)	(24,007)
Net Cash Provided by (Used in) Operating Activities	332,682	195,476
Cash flows from investing activities:
Loan originations and purchases, net of principal collected on loans and leases	(1,529,968)	(1,485,383)
Purchases of equipment for lease financing	(752,536)	(654,671)
Proceeds from sales of loans	1,297,979	1,469,077
Proceeds from sales of lease receivables	21,016	22,590
Proceeds from sales of securities	177	2,813
Purchases of securities	(377,432)	(136,341)
Proceeds from maturities of and principal collected on securities	70,485	42,377
Purchases of Federal Home Loan Bank stock	(107,000)	(71,000)
Redemption of Federal Home Loan Bank stock	116,004	80,928
Proceeds from sales of real estate owned	51,017	42,935
Purchases of premises and equipment	(38,455)	(32,988)
Other, net	24,346	21,248
Net Cash Provided by (Used in) Investing Activities	(1,224,367)	(698,415)
Cash flows from financing activities:
Net change in deposits	599,238	737,299
Net change in short-term borrowings	32,298	(1,534)
Proceeds from long-term borrowings	3,656,133	1,840,008
Payments on long-term borrowings	(3,706,122)	(2,075,047)
Redemption of subordinated debt	0	(50,000)
Net investment by (distribution to) non-controlling interest	(1,887)	(2,887)
Dividends paid on preferred stock	(14,541)	(14,541)
Dividends paid on common stock	(24,825)	(24,512)
Stock compensation tax (expense) benefit	362	1,382
Common shares sold to TCF employee benefit plans	19,273	17,802
Exercise of stock options	2,570	740
Net Cash Provided by (Used in) Financing Activities	562,499	428,710
Net change in cash and due from banks	(329,186)	(74,229)
Cash and due from banks at beginning of period	1,115,250	915,076
Cash and due from banks at end of period	786,064	840,847
Cash paid (received) for:
Interest on deposits and borrowings	46,881	39,864
Income taxes, net	43,119	89,132
Transfer of loans to other assets	80,233	65,704
Transfer of securities available for sale to securities held to maturity	$ 0	$ 191,665

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Consolidated Statements of Financial Condition (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	30,000,000	30,000,000
Preferred stock, shares issued (shares)	4,006,900	4,006,900
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	280,000,000	280,000,000
Common stock, shares issued (shares)	169,473,142	167,503,568
Treasury stock at cost, shares (shares)	42,566	42,566

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Stock Compensation

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Compensation

Stock Compensation

The following table reflects TCF's restricted stock and stock option transactions under the TCF Financial Incentive Stock Program ("Incentive Stock Program") and TCF Financial 2015 Omnibus Incentive Plan during the nine months ended September 30, 2015.

	Restricted Stock									Stock Options
	Shares		Price Range					Weighted- Average Grant Date Fair Value		Shares		Price Range					Weighted- Average Remaining Contractual Life in Years	Weighted- Average Exercise Price
Outstanding at December 31, 2014	2,858,494		$	6.16	-	$	16.02	$	12.73	1,579,000		$	12.85	-	$	15.75	2.98	$	13.91
Granted	711,683		14.17		-	16.28		14.49		—		—		-	—		—	—
Exercised	—		—		-	—		—		(200,000	)	12.85		-	12.85		—	12.85
Forfeited/canceled	(130,632	)	6.80		-	15.96		13.18		—		—		-	—		—	—
Vested	(201,809	)	9.65		-	15.96		13.21		—		—		-	—		—	—
Outstanding at September 30, 2015	3,237,736		6.16		-	16.28		13.06		1,379,000		12.85		-	15.75		2.42	14.07
Exercisable at September 30, 2015	N.A.							N.A.		1,379,000		12.85		-	15.75			14.07

N.A. Not Applicable.

Unrecognized stock compensation expense for restricted stock awards and options was $24.7 million, excluding estimated forfeitures, with a weighted-average remaining amortization period of 2.3 years at September 30, 2015.

At September 30, 2015, there were 1,100,000 shares of performance-based restricted stock outstanding that will vest only if certain return on asset goals and service conditions are achieved. Failure to achieve the performance and service conditions will result in all or a portion of the shares being forfeited.

Valuation and related assumption information for TCF's stock option plans related to options issued in 2008 have not changed from December 31, 2014 and no stock options were subsequently issued through September 30, 2015.

In April 2015, TCF stockholders approved the TCF Financial 2015 Omnibus Incentive Plan, which replaced the Incentive Stock Program. This plan authorized new performance-based restricted stock units to certain executives that were approved by the Compensation Committee of the TCF Board of Directors at its January 2015 meeting. The performance-based restricted stock units are subject to TCF’s relative total stockholder return for the period beginning January 1, 2015 through December 31, 2017, as measured against the peer group, which includes all publicly-traded banks and thrift institutions with assets between $10.0 billion and $50.0 billion as of September 30, 2014, excluding peers which do not remain publicly traded for the full three-year performance period. The number of restricted stock units granted was 71,404 at target and the actual restricted stock units granted will depend on actual performance with a maximum total payout of 150% of target.

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Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 28, 2015
Document and Entity Information
Entity Registrant Name	TCF FINANCIAL CORP
Entity Central Index Key	0000814184
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		169,574,268

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Employee Benefit Plans

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

Employee Benefit Plans

The following tables set forth the net periodic benefit plan (income) cost included in compensation and employee benefits expense for the TCF Cash Balance Pension Plan (the "Pension Plan") and health care benefits for eligible retired employees (the "Postretirement Plan") for the three and nine months ended September 30, 2015 and 2014.

	Pension Plan
	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2015			2014			2015			2014
Interest cost	$	303		$	397		$	911		$	1,191
Return on plan assets	(159		)	(183		)	(479		)	(549		)
Net periodic benefit plan (income) cost	$	144		$	214		$	432		$	642

	Postretirement Plan
	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands)	2015			2014			2015			2014
Interest cost	$	39		$	49		$	115		$	148
Amortization of prior service cost	(12		)	(12		)	(35		)	(35		)
Net periodic benefit plan (income) cost	$	27		$	37		$	80		$	113

TCF made no cash contributions to the Pension Plan in either of the nine months ended September 30, 2015 or 2014. During the three and nine months ended September 30, 2015 and 2014, TCF paid $0.1 million and $0.3 million, respectively, for benefits of the Postretirement Plan.

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Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest income:
Loans and leases	$ 207,250	$ 205,604	$ 620,390	$ 614,929
Securities available for sale	4,161	2,973	10,784	8,941
Securities held to maturity	1,361	1,445	4,150	3,852
Investments and other	10,832	9,681	31,155	26,699
Total interest income	223,604	219,703	666,479	654,421
Interest expense:
Deposits	12,302	10,711	34,454	27,625
Borrowings	6,032	4,812	17,306	15,241
Total interest expense	18,334	15,523	51,760	42,866
Net interest income	205,270	204,180	614,719	611,555
Provision for credit losses	10,018	15,739	35,337	40,140
Net interest income after provision for credit losses	195,252	188,441	579,382	571,415
Non-interest income:
Fees and service charges	36,991	40,255	107,258	114,909
Card revenue	13,803	12,994	40,606	38,493
ATM revenue	5,739	5,863	16,401	16,976
Subtotal	56,533	59,112	164,265	170,378
Gains on sales of auto loans, net	10,423	14,863	27,444	30,603
Gains on sales of consumer real estate loans, net	7,143	8,762	27,860	28,619
Servicing fee income	8,049	5,880	22,607	15,079
Subtotal	25,615	29,505	77,911	74,301
Leasing and equipment finance	27,165	24,383	75,774	69,432
Other	3,070	3,170	8,657	8,341
Fees and other revenue	112,383	116,170	326,607	322,452
Gains (losses) on securities, net	(131)	(94)	(268)	1,047
Total non-interest income	112,252	116,076	326,339	323,499
Non-interest expense:
Compensation and employee benefits	116,708	112,393	348,682	337,146
Occupancy and equipment	34,159	34,121	107,138	103,276
FDIC insurance	4,832	7,292	15,089	22,480
Operating lease depreciation	9,485	7,434	25,801	20,274
Advertising and marketing	5,793	5,656	17,466	17,797
Other	45,750	47,888	139,770	131,841
Subtotal	216,727	214,784	653,946	632,814
Foreclosed real estate and repossessed assets, net	5,680	5,315	18,253	17,126
Other credit costs, net	(123)	(411)	(39)	79
Total non-interest expense	222,284	219,688	672,160	650,019
Income before income tax expense	85,220	84,829	233,561	244,895
Income tax expense	30,528	30,791	82,258	88,755
Income after income tax expense	54,692	54,038	151,303	156,140
Income attributable to non-controlling interest	2,117	1,721	6,672	5,941
Net income attributable to TCF Financial Corporation	52,575	52,317	144,631	150,199
Preferred stock dividends	4,847	4,847	14,541	14,541
Net income available to common stockholders	$ 47,728	$ 47,470	$ 130,090	$ 135,658
Net income per common share:
Basic (in dollars per share)	$ 0.29	$ 0.29	$ 0.79	$ 0.83
Diluted (in dollars per share)	$ 0.29	$ 0.29	$ 0.78	$ 0.83

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Allowance for Loan and Lease Losses and Credit Quality Information

9 Months Ended

Sep. 30, 2015

Allowance for Loan and Lease Losses and Credit Quality Information

Allowance for Loan and Lease Losses and Credit Quality Information

Allowance for Loan and Lease Losses and Credit Quality Information

The following tables provide the allowance for loan and lease losses and other related information. TCF's key credit quality indicator is the receivable's payment performance status, defined as accruing or non-accruing.

(In thousands)	Consumer Real Estate			Commercial			Leasing and Equipment Finance			Inventory Finance			Auto Finance			Other			Total
At or For the Three Months Ended September 30, 2015:
Balance, beginning of period	$	74,687		$	30,205		$	17,669		$	10,879		$	22,061		$	614		$	156,115
Charge-offs	(6,310		)	(487		)	(1,583		)	(463		)	(4,594		)	(1,901		)	(15,338		)
Recoveries	1,832			514			702			319			915			1,115			5,397
Net (charge-offs) recoveries	(4,478		)	27			(881		)	(144		)	(3,679		)	(786		)	(9,941		)
Provision for credit losses	780			(226		)	1,389			546			6,750			779			10,018
Other	(660		)	—			—			(160		)	(1,410		)	—			(2,230		)
Balance, end of period	$	70,329		$	30,006		$	18,177		$	11,121		$	23,722		$	607		$	153,962
At or For the Three Months Ended September 30, 2014:
Balance, beginning of period	$	161,349		$	31,361		$	19,184		$	9,539		$	13,865		$	783		$	236,081
Charge-offs	(24,072		)	(262		)	(2,350		)	(548		)	(2,958		)	(2,448		)	(32,638		)
Recoveries	1,912			406			1,157			284			494			1,448			5,701
Net (charge-offs) recoveries	(22,160		)	144			(1,193		)	(264		)	(2,464		)	(1,000		)	(26,937		)
Provision for credit losses	6,636			1,785			(391		)	411			6,302			996			15,739
Other	(700		)	—			—			(130		)	(1,395		)	—			(2,225		)
Balance, end of period	$	145,125		$	33,290		$	17,600		$	9,556		$	16,308		$	779		$	222,658
(In thousands)	Consumer Real Estate			Commercial			Leasing and Equipment Finance			Inventory Finance			Auto Finance			Other			Total
At or For the Nine Months Ended September 30, 2015:
Balance, beginning of period	$	85,361		$	31,367		$	18,446		$	10,020		$	18,230		$	745		$	164,169
Charge-offs	(27,074		)	(3,944		)	(5,447		)	(1,812		)	(12,943		)	(5,226		)	(56,446		)
Recoveries	5,626			2,878			2,205			626			2,253			3,902			17,490
Net (charge-offs) recoveries	(21,448		)	(1,066		)	(3,242		)	(1,186		)	(10,690		)	(1,324		)	(38,956		)
Provision for credit losses	8,660			(295		)	2,973			2,627			20,186			1,186			35,337
Other	(2,244		)	—			—			(340		)	(4,004		)	—			(6,588		)
Balance, end of period	$	70,329		$	30,006		$	18,177		$	11,121		$	23,722		$	607		$	153,962
At or For the Nine Months Ended September 30, 2014:
Balance, beginning of period	$	176,030		$	37,467		$	18,733		$	8,592		$	10,623		$	785		$	252,230
Charge-offs	(51,639		)	(5,628		)	(5,760		)	(898		)	(7,682		)	(6,343		)	(77,950		)
Recoveries	5,319			785			2,845			661			1,109			4,523			15,242
Net (charge-offs) recoveries	(46,320		)	(4,843		)	(2,915		)	(237		)	(6,573		)	(1,820		)	(62,708		)
Provision for credit losses	17,821			737			1,782			1,336			16,650			1,814			40,140
Other	(2,406		)	(71		)	—			(135		)	(4,392		)	—			(7,004		)
Balance, end of period	$	145,125		$	33,290		$	17,600		$	9,556		$	16,308		$	779		$	222,658

The following tables provide information regarding the allowance for loan and lease losses and balances by type of allowance methodology.

	At September 30, 2015
(In thousands)	Consumer Real Estate		Commercial		Leasing and Equipment Finance		Inventory  Finance		Auto  Finance		Other		Total
Allowance for loan and lease losses:
Collectively evaluated for impairment	$	45,884	$	29,497	$	16,363	$	10,910	$	21,410	$	604	$	124,668
Individually evaluated for impairment	24,445		509		1,814		211		2,312		3		29,294
Total	$	70,329	$	30,006	$	18,177	$	11,121	$	23,722	$	607	$	153,962
Loans and leases outstanding:
Collectively evaluated for impairment	$	5,393,919	$	3,035,004	$	3,861,455	$	2,151,551	$	2,419,230	$	20,656	$	16,881,815
Individually evaluated for impairment	219,795		77,321		12,076		1,834		8,098		18		319,142
Loans acquired with deteriorated credit quality	—		—		50		—		39		—		89
Total	$	5,613,714	$	3,112,325	$	3,873,581	$	2,153,385	$	2,427,367	$	20,674	$	17,201,046

	At December 31, 2014
(In thousands)	Consumer Real Estate		Commercial		Leasing and Equipment  Finance		Inventory  Finance		Auto  Finance		Other		Total
Allowance for loan and lease losses:
Collectively evaluated for impairment	$	57,167	$	27,594	$	16,310	$	9,627	$	17,046	$	741	$	128,485
Individually evaluated for impairment	28,194		3,773		2,136		393		1,184		4		35,684
Total	$	85,361	$	31,367	$	18,446	$	10,020	$	18,230	$	745	$	164,169
Loans and leases outstanding:
Collectively evaluated for impairment	$	5,462,005	$	3,038,378	$	3,731,420	$	1,874,481	$	1,911,267	$	24,055	$	16,041,606
Individually evaluated for impairment	220,359		119,287		13,763		2,609		3,676		89		359,783
Loans acquired with deteriorated credit quality	—		—		139		—		118		—		257
Total	$	5,682,364	$	3,157,665	$	3,745,322	$	1,877,090	$	1,915,061	$	24,144	$	16,401,646

Accruing and Non-accrual Loans and Leases  The following tables set forth information regarding TCF's accruing and non-accrual loans and leases. Non-accrual loans and leases are those which management believes have a higher risk of loss. Delinquent balances are determined based on the contractual terms of the loan or lease.

	At September 30, 2015
(In thousands)	Current-59 Days Delinquent and Accruing		60-89 Days  Delinquent  and Accruing		90 Days or More Delinquent and Accruing		Total  Accruing		Non-accrual		Total
Consumer real estate:
First mortgage lien	$	2,584,735	$	8,612	$	904	$	2,594,251	$	130,343	$	2,724,594
Junior lien	2,845,205		2,316		—		2,847,521		41,599		2,889,120
Total consumer real estate	5,429,940		10,928		904		5,441,772		171,942		5,613,714
Commercial:
Commercial real estate	2,543,476		7,467		—		2,550,943		10,885		2,561,828
Commercial business	546,822		1		—		546,823		3,674		550,497
Total commercial	3,090,298		7,468		—		3,097,766		14,559		3,112,325
Leasing and equipment finance	3,855,752		6,988		288		3,863,028		10,197		3,873,225
Inventory finance	2,151,479		117		78		2,151,674		1,711		2,153,385
Auto finance	2,416,861		1,866		903		2,419,630		7,698		2,427,328
Other	20,636		25		10		20,671		3		20,674
Subtotal	16,964,966		27,392		2,183		16,994,541		206,110		17,200,651
Portfolios acquired with deteriorated credit quality	391		—		4		395		—		395
Total	$	16,965,357	$	27,392	$	2,187	$	16,994,936	$	206,110	$	17,201,046

	At December 31, 2014
(In thousands)	Current-59 Days Delinquent and Accruing		60-89 Days  Delinquent  and Accruing		90 Days or More Delinquent and Accruing		Total  Accruing		Non-accrual		Total
Consumer real estate:
First mortgage lien	$	2,987,992	$	13,176	$	194	$	3,001,362	$	137,790	$	3,139,152
Junior lien	2,505,640		2,091		—		2,507,731		35,481		2,543,212
Total consumer real estate	5,493,632		15,267		194		5,509,093		173,271		5,682,364
Commercial:
Commercial real estate	2,599,701		—		—		2,599,701		24,554		2,624,255
Commercial business	532,929		—		—		532,929		481		533,410
Total commercial	3,132,630		—		—		3,132,630		25,035		3,157,665
Leasing and equipment finance	3,728,115		2,242		307		3,730,664		12,670		3,743,334
Inventory finance	1,874,933		49		26		1,875,008		2,082		1,877,090
Auto finance	1,907,005		2,785		1,478		1,911,268		3,676		1,914,944
Other	24,144		—		—		24,144		—		24,144
Subtotal	16,160,459		20,343		2,005		16,182,807		216,734		16,399,541
Portfolios acquired with deteriorated credit quality	2,017		83		5		2,105		—		2,105
Total	$	16,162,476	$	20,426	$	2,010	$	16,184,912	$	216,734	$	16,401,646

The following table provides interest income recognized on loans and leases in non-accrual status and contractual interest that would have been recorded had the loans and leases performed in accordance with their original contractual terms.

	Three Months Ended   September 30,				Nine Months Ended   September 30,
(In thousands)	2015		2014		2015		2014
Contractual interest due on non-accrual loans and leases	$	5,428	$	6,720	$	15,992	$	20,259
Interest income recognized on non-accrual loans and leases	1,021		2,531		3,319		6,411
Unrecognized interest income	$	4,407	$	4,189	$	12,673	$	13,848

The following table provides information regarding consumer real estate loans to customers currently involved in ongoing Chapter 7 or Chapter 13 bankruptcy proceedings which have not yet been discharged or completed. 

(In thousands)	At September 30, 2015		At December 31, 2014
Consumer real estate loans to customers in bankruptcy:
0-59 days delinquent and accruing	$	28,029	$	47,731
60+ days delinquent and accruing	—		247
Non-accrual	19,243		12,284
Total consumer real estate loans to customers in bankruptcy	$	47,272	$	60,262

Loan Modifications for Borrowers with Financial Difficulties  Included within loans and leases in the previous tables are certain loans that have been modified in order to maximize collection of loan balances. If, for economic or legal reasons related to the customer's financial difficulties, TCF grants a concession, the modified loan is classified as a troubled debt restructuring ("TDR") loan. TDR loans consist primarily of consumer real estate and commercial loans.

Total TDR loans at September 30, 2015 and December 31, 2014 were $251.4 million and $298.5 million, respectively, of which $150.2 million and $193.8 million were accruing. TCF held consumer real estate TDR loans of $190.7 million and $199.6 million at September 30, 2015 and December 31, 2014, respectively, of which $107.6 million and $111.9 million were accruing. TCF also held $50.5 million and $91.6 million of commercial TDR loans at September 30, 2015 and December 31, 2014, respectively, of which $40.5 million and $80.4 million were accruing. TDR loans for the remaining classes of finance receivables were not material at September 30, 2015 or December 31, 2014.

Unfunded commitments to commercial and consumer real estate loans classified as TDRs were $1.0 million and $3.9 million at September 30, 2015 and December 31, 2014, respectively. At September 30, 2015 and December 31, 2014, no additional funds were committed to leasing and equipment finance, inventory finance or auto finance loans classified as TDRs.

When a loan is modified as a TDR, principal balances are generally not forgiven. Loan modifications to troubled borrowers are not reported as TDR loans in the calendar year after modification if the loans were modified at an interest rate equal to the yields of new loan originations with comparable risk and the loans are performing based on the terms of the restructured agreements. All loans classified as TDR loans are considered to be impaired. During the nine months ended September 30, 2015 and 2014, $9.0 million and $11.1 million, respectively, of commercial loans were removed from TDR status as they were restructured at market terms and are performing.

The financial effects of TDR loans represent the difference between interest income recognized on accruing TDR loans and the contractual interest that would have been recorded under the original contractual terms, or foregone interest income. For the three months ended September 30, 2015, foregone interest income for consumer real estate first mortgage lien accruing TDR loans and consumer real estate junior lien accruing TDR loans was $0.5 million and $0.2 million, respectively. The average yield for the same period on consumer real estate accruing TDR loans was 4.1%, which compares to the original contractual average rate of 6.8%. For the three months ended September 30, 2014, foregone interest income for consumer real estate first mortgage lien accruing TDR loans and consumer real estate junior lien accruing TDR loans was $4.3 million and $0.3 million, respectively. The average yield for the same period on consumer real estate accruing TDR loans was 3.3%, which compares to the original contractual average rate of 6.9%. The foregone interest income for the remaining classes of finance receivables was not material for the three months ended September 30, 2015 and 2014.

For the nine months ended September 30, 2015, foregone interest income for consumer real estate first mortgage lien accruing TDR loans and consumer real estate junior lien accruing TDR loans was $1.6 million and $0.6 million, respectively. The average yield for the same period on consumer real estate accruing TDR loans was 4.0%, which compares to the original contractual average rate of 6.7%. For the nine months ended September 30, 2014, foregone interest income for consumer real estate first mortgage lien accruing TDR loans and consumer real estate junior lien accruing TDR loans was $12.9 million and $0.9 million, respectively. The average yield for the same period on consumer real estate accruing TDR loans was 3.3%, which compares to the original contractual average rate of 6.8%. The foregone interest income for the remaining classes of finance receivables was not material for the nine months ended September 30, 2015 and 2014.

The table below summarizes TDR loans that defaulted during the three and nine months ended September 30, 2015 and 2014, which were modified during the respective reporting period or within one year of the beginning of the respective reporting period. TCF considers a loan to have defaulted when it becomes 90 or more days delinquent under the modified terms, has been transferred to non-accrual status subsequent to the modification or has been transferred to other real estate owned or repossessed and returned assets.

	Three Months Ended September 30,						Nine Months Ended September 30,
(Dollars in thousands)	2015			2014			2015			2014
Loan balance:(1)
Consumer real estate:
First mortgage lien	$	158		$	703		$	1,456		$	3,068
Junior lien	248			203			799			1,338
Total consumer real estate	406			906			2,255			4,406
Commercial:
Commercial real estate	—			—			—			3,814
Commercial business	—			127			—			127
Total commercial	—			127			—			3,941
Auto finance	282			113			676			237
Defaulted TDR loans modified during the applicable period	$	688		$	1,146		$	2,931		$	8,584
Total TDR loans modified in the applicable period	$	52,622		$	115,533		$	82,135		$	174,433
Defaulted modified TDR loans as a percent of total TDR loans modified in the applicable period	1.3		%	1.0		%	3.6		%	4.9		%

(1) The loan balances presented are not materially different than the pre-modification loan balances as TCF's loan modifications generally do not forgive principal amounts.

Consumer real estate TDR loans are evaluated separately in TCF's allowance methodology. Impairment is generally based upon the present value of the expected future cash flows or the fair value of the collateral less selling expenses for collateral dependent loans. The allowance on accruing consumer real estate TDR loans was $19.1 million, or 17.8% of the outstanding balance, at September 30, 2015, and $20.4 million, or 18.2% of the outstanding balance, at December 31, 2014. In determining impairment for consumer real estate accruing TDR loans, TCF utilized assumed remaining re-default rates ranging from 5% to 20% in 2015 and 4% to 22% in 2014, depending on modification type and actual experience. At September 30, 2015, 1.6% of accruing consumer real estate TDR loans were more than 60 days delinquent, compared with 2.4% at December 31, 2014.

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. Of the non-accrual TDR balance at September 30, 2015, $53.3 million, or 64.1%, were loans discharged in Chapter 7 bankruptcy that were not reaffirmed by the borrower, of which 76.4% were current. Of the non-accrual TDR balance at December 31, 2014, $50.0 million, or 57.0%, were loans discharged in Chapter 7 bankruptcy that were not reaffirmed, of which 68.4% were current. All eligible loans are re-aged to current delinquency status upon modification.

Commercial TDR loans are individually evaluated for impairment based upon the present value of the expected future cash flows, or for collateral dependent loans, at the fair value of collateral less selling expense. The allowance on accruing commercial TDR loans was $0.1 million, or 0.2% of the outstanding balance, at September 30, 2015, and $1.4 million, or 1.7% of the outstanding balance, at December 31, 2014. No accruing commercial TDR loans were 60 days or more delinquent at September 30, 2015 and December 31, 2014.

Impaired Loans  TCF considers impaired loans to include non-accrual commercial loans, non-accrual equipment finance loans and non-accrual inventory finance loans, as well as all TDR loans. Non-accrual impaired loans, including non-accrual TDR loans, are included in non-accrual loans and leases within the previous tables. Accruing TDR loans have been disclosed by delinquency status within the previous tables of accruing and non-accrual loans and leases. In the following tables, the loan balance of impaired loans represents the amount recorded within loans and leases on the Consolidated Statements of Financial Condition, whereas the unpaid contractual balance represents the balances legally owed by the borrowers.

The following table summarizes impaired loans.

	At September 30, 2015						At December 31, 2014
(In thousands)	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded
Impaired loans with an allowance recorded:
Consumer real estate:
First mortgage lien	$	148,772	$	125,063	$	17,886	$	114,526	$	101,668	$	18,140
Junior lien	71,218		59,370		6,493		65,413		55,405		9,427
Total consumer real estate	219,990		184,433		24,379		179,939		157,073		27,567
Commercial:
Commercial real estate	17,881		17,874		506		58,157		54,412		3,772
Commercial business	16		16		3		18		18		1
Total commercial	17,897		17,890		509		58,175		54,430		3,773
Leasing and equipment finance	5,990		5,990		751		8,257		8,257		1,457
Inventory finance	1,293		1,299		211		1,754		1,758		393
Auto finance	6,426		6,185		2,235		3,074		2,928		1,184
Other	19		18		3		92		89		4
Total impaired loans with an allowance recorded	251,615		215,815		28,088		251,291		224,535		34,378
Impaired loans without an allowance recorded:
Consumer real estate:
First mortgage lien	9,802		5,698		—		53,606		35,147		—
Junior lien	26,586		551		—		33,796		7,398		—
Total consumer real estate	36,388		6,249		—		87,402		42,545		—
Commercial:
Commercial real estate	41,452		33,475		—		57,809		50,500		—
Commercial business	3,746		3,673		—		482		480		—
Total commercial	45,198		37,148		—		58,291		50,980		—
Inventory finance	533		535		—		848		851		—
Auto finance	1,929		1,070		—		1,484		748		—
Total impaired loans without an allowance recorded	84,048		45,002		—		148,025		95,124		—
Total impaired loans	$	335,663	$	260,817	$	28,088	$	399,316	$	319,659	$	34,378

The average loan balance of impaired loans and interest income recognized on impaired loans during the three and nine months ended September 30, 2015 and 2014 are included within the table below.

	Three Months Ended								Nine Months Ended
	September 30, 2015				September 30, 2014				September 30, 2015				September 30, 2014
(In thousands)	Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized
Impaired loans with an allowance recorded:
Consumer real estate:
First mortgage lien	$	126,426	$	1,513	$	491,424	$	3,537	$	113,365	$	3,971	$	494,448	$	11,169
Junior lien	60,298		906		70,131		825		57,387		2,446		69,990		2,618
Total consumer real estate	186,724		2,419		561,555		4,362		170,752		6,417		564,438		13,787
Commercial:
Commercial real estate	19,183		174		60,981		589		36,143		777		67,587		1,826
Commercial business	18		—		1,123		—		17		—		2,491		—
Total commercial	19,201		174		62,104		589		36,160		777		70,078		1,826
Leasing and equipment finance	6,084		8		7,913		2		7,123		16		7,902		54
Inventory finance	1,869		17		2,114		6		1,529		66		4,846		77
Auto finance	5,309		8		1,262		—		4,557		8		999		—
Other	17		1		89		1		53		2		93		4
Total impaired loans with an allowance recorded	219,204		2,627		635,037		4,960		220,174		7,286		648,356		15,748
Impaired loans without an allowance recorded:
Consumer real estate:
First mortgage lien	5,633		138		54,008		991		20,422		919		56,230		1,726
Junior lien	286		408		4,817		360		3,975		1,403		5,523		899
Total consumer real estate	5,919		546		58,825		1,351		24,397		2,322		61,753		2,625
Commercial:
Commercial real estate	37,109		507		63,619		690		41,988		1,674		69,944		2,128
Commercial business	2,014		—		3,657		17		2,077		5		2,947		94
Total commercial	39,123		507		67,276		707		44,065		1,679		72,891		2,222
Inventory finance	497		22		832		9		693		77		265		54
Auto finance	1,134		—		675		—		909		—		440		—
Total impaired loans without an allowance recorded	46,673		1,075		127,608		2,067		70,064		4,078		135,349		4,901
Total impaired loans	$	265,877	$	3,702	$	762,645	$	7,027	$	290,238	$	11,364	$	783,705	$	20,649

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Loans and Leases

9 Months Ended

Sep. 30, 2015

Receivables [Abstract]

Loans and Leases

Loans and Leases

Loans and leases consisted of the following.

(Dollars in thousands)	At September 30, 2015		At December 31, 2014		Percent Change
Consumer real estate:
First mortgage lien	$	2,724,594	$	3,139,152	(13.2	)%
Junior lien	2,889,120		2,543,212		13.6
Total consumer real estate	5,613,714		5,682,364		(1.2	)
Commercial:
Commercial real estate:
Permanent	2,233,722		2,382,144		(6.2	)
Construction and development	328,106		242,111		35.5
Total commercial real estate	2,561,828		2,624,255		(2.4	)
Commercial business	550,497		533,410		3.2
Total commercial	3,112,325		3,157,665		(1.4	)
Leasing and equipment finance	3,873,581		3,745,322		3.4
Inventory finance	2,153,385		1,877,090		14.7
Auto finance	2,427,367		1,915,061		26.8
Other	20,674		24,144		(14.4	)
Total loans and leases(1)	$	17,201,046	$	16,401,646	4.9

(1) Loans and leases are reported at historical cost including net direct fees and costs associated with originating and acquiring loans and leases, lease residuals, unearned income and unamortized purchase premiums and discounts. The aggregate amount of these loan and lease adjustments was $55.1 million and $43.4 million at September 30, 2015 and December 31, 2014, respectively.

The consumer real estate junior lien portfolio was comprised of $2.5 billion of home equity lines of credit ("HELOCs") and $363.0 million of amortizing junior lien mortgage loans at September 30, 2015, compared with $2.1 billion and $424.4 million at December 31, 2014, respectively. At September 30, 2015 and December 31, 2014, $1.8 billion and $1.3 billion, respectively, of the consumer real estate junior lien HELOCs had a 10-year interest-only draw period and a 20-year amortization repayment period and all were within the 10-year interest-only draw period and will not convert to amortizing loans until 2021 or later. At September 30, 2015 and December 31, 2014, $697.9 million and $816.0 million, respectively, of the consumer real estate junior lien HELOCs were interest-only revolving draw loans with no defined amortization period and original draw periods of 5 to 40 years. As of September 30, 2015, 18.3% of these loans mature prior to 2021.

The following table summarizes the carrying value of consumer real estate loans and consumer auto loans sold with servicing retained, the cash received, retained interest-only strips and the recognized net gains for the nine months ended September 30, 2015 and 2014. No servicing assets or liabilities related to consumer real estate or consumer auto loans were recorded within TCF's Consolidated Statements of Financial Condition, as the contractual servicing fees are adequate to compensate TCF for its servicing responsibilities based on the amount demanded by the marketplace.

	For the Nine Months Ended September 30,
(In thousands)	2015						2014
	Consumer Real Estate Loans			Consumer Auto Loans			Consumer Real Estate Loans			Consumer Auto Loans
Sales proceeds, net(1)	$	898,387		$	1,113,036		$	827,831		$	989,811
Recorded investment in loans sold, including accrued interest	(878,468		)	(1,084,348		)	(808,627		)	(970,444		)
Interest-only strips, initial value	6,948			—			9,135			12,137
Net gains(2)	$	26,867		$	28,688		$	28,339		$	31,504

(1) Includes transaction fees and other sales related costs.

(2) Excludes subsequent adjustments and valuation adjustments while held for sale.

TCF has two consumer real estate loan sale programs; one that sells nationally originated junior lien loans and the other that originates first mortgage lien loans in our primary banking markets and sells the loans through a correspondent relationship. Included in the consumer real estate recognized net gains was $4.7 million on the recorded investment of first mortgage lien loans sold related to the correspondent lending program, including accrued interest, of $212.9 million during the first nine months of 2015. There were no loans sold related to the correspondent lending program during the first nine months of 2014.

Included in the consumer auto loans sold in the table above are amounts related to the execution of securitizations.During the nine months ended September 30, 2015 and 2014, TCF transferred the recorded investment in consumer auto loans, including accrued interest, totaling $880.8 million and $258.6 million, respectively, with servicing retained, to trusts in securitization transactions, received net sales proceeds of $902.8 million and $266.0 million, respectively, and recognized gains of $22.0 million and $7.4 million, respectively, which qualified for sale accounting. These trusts are considered variable interest entities due to their limited capitalization and special purpose nature, however TCF does not have a variable interest in the trusts. Therefore, TCF is not the primary beneficiary of the trusts and they are not consolidated.

Total interest-only strips and the contractual liabilities related to loan sales are shown below.

(In thousands)	At September 30, 2015		At December 31, 2014
Interest-only strips attributable to:
Consumer real estate loan sales	$	21,138	$	21,198
Consumer auto loan sales	29,561		48,591
Contractual liabilities attributable to:
Consumer real estate loan sales	$	723	$	563
Consumer auto loan sales	365		699

TCF had no impairment charges on consumer real estate loan interest-only strips for the nine months ended September 30, 2015 and 2014. TCF recorded impairment charges on the consumer auto loan interest-only strips of $0.9 million and $1.6 million for the nine months ended September 30, 2015 and 2014, respectively, primarily as a result of higher prepayments than originally assumed.

TCF's agreements to sell auto and consumer real estate loans typically contain certain representations and warranties regarding the loans sold. These representations and warranties generally relate to, among other things, the ownership of the loan, the validity, priority and perfection of the lien securing the loan, accuracy of information supplied to the buyer, the loan's compliance with the criteria set forth in the agreement, payment delinquency and compliance with applicable laws and regulations. TCF may be required to repurchase loans in the event of an unremedied breach of these representations or warranties. During the nine months ended September 30, 2015 and 2014, losses related to repurchases pursuant to such representations and warranties were immaterial. The majority of such repurchases were of consumer auto loans where TCF typically has contractual agreements with the automobile dealerships that originated the loans requiring the dealers to repurchase such contracts from TCF.

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Litigation Contingencies

9 Months Ended

Sep. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Litigation Contingencies

Litigation Contingencies

From time to time, TCF is a party to legal proceedings arising out of its lending, leasing and deposit operations, including foreclosure proceedings and other collection actions as part of its lending and leasing collections activities. TCF may also be subject to regulatory examinations and enforcement actions brought by federal regulators, including the Securities and Exchange Commission ("SEC"), the Federal Reserve, the OCC and the Consumer Financial Protection Bureau ("CFPB"), and TCF's regulatory authorities may impose sanctions on TCF for failures related to regulatory compliance. From time to time, borrowers and other customers, and employees and former employees, have also brought actions against TCF, in some cases claiming substantial damages. TCF and other financial services companies are subject to the risk of class action litigation. Litigation is often unpredictable and the actual results of litigation cannot be determined, and therefore the ultimate resolution of a matter and the possible range of loss associated with certain potential outcomes cannot be established. Except as discussed below, based on our current understanding of TCF’s pending legal proceedings, management does not believe that judgments or settlements arising from pending or threatened legal matters, individually or in the aggregate, would have a material adverse effect on the consolidated financial position, operating results or cash flows of TCF.

On October 29, 2015, TCF received a Notice and Opportunity to Respond and Advise letter ("NORA Letter") from the CFPB notifying TCF that the CFPB’s Office of Enforcement is considering recommending that the CFPB take legal action against TCF related to compliance with laws relating to unfair, deceptive and abusive acts and practices and Regulation E, §1005.17, in connection with TCF’s practices in administering checking account overdraft program "opt-in" requirements. The purpose of a NORA Letter is to ensure that potential subjects of enforcement actions have the opportunity to present their positions to the CFPB before an enforcement action is recommended or commenced. The NORA Letter offers TCF the opportunity to make a written statement setting forth any reasons of law or policy why TCF believes that the CFPB should not take action against it, which TCF intends to do. We are currently unable to predict the ultimate timing or outcome of this matter. There can be no assurance that the CFPB will not utilize its enforcement authority through settlement, administrative proceedings or litigation and seek remediation, disgorgement, penalties, other monetary relief, injunctive relief or changes to TCF’s business practices or operations, which could have a material adverse effect on TCF.

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Derivative Instruments

9 Months Ended

Sep. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

Derivative Instruments

All derivative instruments are recognized within other assets or other liabilities at fair value within the Consolidated Statements of Financial Condition. The value of derivative instruments will vary over their contractual terms as the related underlying rates fluctuate. The accounting for changes in the fair value of a derivative instrument depends on whether or not the contract has been designated and qualifies as a hedge. To qualify as a hedge, a contract must be highly effective at reducing the risk associated with the exposure being hedged. In addition, for a contract to be designated as a hedge, the risk management objective and strategy must be documented at inception. Hedge documentation must also identify the hedging instrument, the asset or liability and type of risk to be hedged and how the effectiveness of the contract is assessed prospectively and retrospectively. To assess effectiveness, TCF uses statistical methods such as regression analysis. A contract that has been, and is expected to continue to be, effective at offsetting changes in fair values or the net investment must be assessed and documented at least quarterly. If it is determined that a contract is not highly effective at hedging the designated exposure, hedge accounting is discontinued.

Upon origination of a derivative instrument, the contract is designated either as a hedge of the volatility of an investment in foreign operations driven by changes in foreign currency exchange rates ("net investment hedge"), a hedge of the exposure to changes in the fair value of an asset or liability due to changes in market risk ("fair value hedge"), or is not designated as a hedge. Changes in net investment hedges recorded within other comprehensive income (loss) are subsequently reclassified to non-interest expense during the period in which the foreign investment is substantially liquidated or when other elements of the currency translation adjustment are reclassified to income.

Net Investment Hedges  Forward foreign exchange contracts, that generally settle within 30 days, are used to manage the foreign exchange risk associated with the Company's net investment in TCF Commercial Finance Canada, Inc., a wholly-owned indirect Canadian subsidiary of TCF Bank.

Fair Value Hedges During the first quarter of 2015, TCF Bank entered into an interest rate swap related to its contemporaneously issued subordinated debt, which settles through a central clearing house. The swap was designated as a fair value hedge and effectively converts the fixed interest rate to a floating rate based on three-month London InterBank Offered Rate ("LIBOR") plus a fixed number of basis points on the $150.0 million notional amount through February 27, 2025, the maturity date of the subordinated debt. In exchange, TCF Bank will receive 4.60% fixed-rate interest from the swap counterparty.

The interest rate swap substantially offsets the change in fair value of the hedged underlying debt that is attributable to the changes in market risk. The gains and losses related to changes in the fair value of the interest rate swap as well as the offsetting changes in fair value of the hedged debt are reflected in non-interest income.

Derivatives Not Designated as Hedges  TCF executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged with offsetting interest rate swaps that TCF executes with a third party and settles through a central clearing house, minimizing TCF's net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are reflected in non-interest income. These contracts have original fixed maturity dates ranging from three to seven years.

During the second quarter of 2012, TCF sold its Visa^® Class B stock. In conjunction with the sale, TCF and the purchaser entered into a derivative transaction whereby TCF may receive or be required to make cash payments whenever the conversion ratio of the Visa Class B stock into Visa Class A stock is adjusted. The fair value of this derivative has been determined using estimated future cash flows using probability weighted scenarios for multiple estimates of Visa's aggregate exposure to covered litigation matters, which include consideration of amounts funded by Visa into its escrow account for the covered litigation matters. Changes, if any, in the valuation of this swap agreement, which has no determinable maturity date, are reflected in non-interest income.

Certain of TCF's forward foreign exchange contracts are not designated as hedges and are generally settled within 30 days. Changes in the fair value of these forward foreign exchange contracts are reflected in non-interest expense.

TCF enters into interest rate lock commitments in conjunction with consumer real estate loans included in the correspondent lending program. These interest rate lock commitments are agreements to extend credit under certain specified terms and conditions at fixed rates and have original lock expirations of up to 60 days. They are not designated as hedges and accordingly, changes in the valuation of these commitments are reflected in non-interest income.

The following tables summarize TCF's outstanding derivative instruments as of September 30, 2015 and December 31, 2014. See Note 13, Fair Value Disclosures, for additional information.

	At September 30, 2015
(In thousands)	Notional Amount		Gross Amounts Recognized		Gross Amounts Offset			Net Amount Presented(1)
Derivative Assets:
Derivatives designated as hedges:
Interest rate contracts	$	150,000	$	2,029	$	—		$	2,029
Forward foreign exchange contracts	45,973		327		—			327
Derivatives not designated as hedges:
Forward foreign exchange contracts	402,568		2,506		(1,176		)	1,330
Interest rate contracts	82,884		2,510		—			2,510
Interest rate lock commitments	36,632		643		—			643
Total derivative assets			$	8,015	$	(1,176	)	$	6,839
Derivative Liabilities:
Derivatives not designated as hedges:
Forward foreign exchange contracts	$	112,680	$	348	$	(168	)	$	180
Interest rate contracts	82,884		2,624		(2,624		)	—
Other contracts	13,804		386		(386		)	—
Total derivative liabilities			$	3,358	$	(3,178	)	$	180
	At December 31, 2014
(In thousands)	Notional Amount		Gross Amounts Recognized		Gross Amounts Offset			Net Amount Presented(1)
Derivative Assets:
Derivatives designated as hedges:
Forward foreign exchange contracts	$	42,165	$	509	$	—		$	509
Derivatives not designated as hedges:
Forward foreign exchange contracts	275,962		2,702		(1,179		)	1,523
Interest rate contracts	101,166		1,798		—			1,798
Interest rate lock commitments	15,124		285		—			285
Total derivative assets			$	5,294	$	(1,179	)	$	4,115
Derivative Liabilities:
Derivatives not designated as hedges:
Forward foreign exchange contracts	$	189,310	$	177	$	(29	)	$	148
Interest rate contracts	101,166		1,877		(1,877		)	—
Other contracts	13,804		621		(621		)	—
Total derivative liabilities			$	2,675	$	(2,527	)	$	148

(1)  All amounts were offset in the Consolidated Statements of Financial Condition.

The following table summarizes the pre-tax impact of derivative activity within the Consolidated Statements of Income and the Consolidated Statements of Comprehensive Income.

		Three Months Ended September 30,					Nine Months Ended September 30,
(In thousands)	Income Statement Location	2015			2014		2015			2014
Consolidated Statements of Income
Fair value hedges:
Interest rate contracts	Non-interest income	$	6,296		$	—	$	2,029		$	—
Non-derivative hedged items	Non-interest income	(5,425		)	—		(1,862		)	—
Not designated as hedges:
Forward foreign exchange contracts	Non-interest expense	26,574			21,533		55,866			20,882
Interest rate lock commitments	Non-interest income	189			159		359			159
Interest rate contracts	Non-interest income	(48		)	10		(28		)	(40		)
Net gain (loss) recognized		$	27,586		$	21,702	$	56,364		$	21,001
Consolidated Statements of Comprehensive Income
Net investment hedges:
Forward foreign exchange contracts	Other comprehensive income (loss)	$	2,858		$	1,849	$	5,772		$	1,677
Net unrealized gain (loss)		$	2,858		$	1,849	$	5,772		$	1,677

TCF executes all of its forward foreign exchange contracts in the over-the-counter market with large financial institutions pursuant to International Swaps and Derivatives Association, Inc. agreements. These agreements include credit risk-related features that enhance the creditworthiness of these instruments as compared with other obligations of the respective counterparty with whom TCF has transacted by requiring that additional collateral be posted under certain circumstances. The amount of collateral required depends on the contract and is determined daily based on market and currency exchange rate conditions.

At September 30, 2015, credit risk-related contingent features existed on forward foreign exchange contracts with a notional value of $161.5 million. In the event TCF is rated less than BB- by Standard and Poor's, the contracts could be terminated or TCF may be required to provide approximately $3.2 million in additional collateral. There were no forward foreign exchange contracts containing credit risk-related features in a net liability position at September 30, 2015.

At September 30, 2015, TCF had posted $10.7 million and $1.4 million of cash collateral related to its interest rate contracts and other contracts, respectively, and had received $2.9 million of cash collateral related to its forward foreign exchange contracts.

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Long-term Borrowings

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Long-term Borrowings

Long-term Borrowings

Long-term borrowings consisted of the following.

		At September 30, 2015							At December 31, 2014
(Dollars in thousands)	Stated Maturity	Amount		Stated Rate					Amount		Stated Rate
Federal Home Loan Bank advances	2015	$	—	—	%		—	%	$	125,000	0.37	%	-	0.38	%
	2016	447,000		0.39		-	1.17		547,000		0.25		-	1.17
	2017	275,000		0.24		-	0.26		275,000					0.25
Subtotal		722,000							947,000
Subordinated bank notes	2016	74,978					5.50		74,930					5.50
	2022	109,260					6.25		109,194					6.25
	2025	149,106					4.60		—					—
Hedge-related basis adjustment(1)		1,862							—
Subtotal		335,206							184,124
Discounted lease rentals	2015	10,355		2.39		-	7.95		32,904		2.39		-	7.95
	2016	44,691		2.39		-	7.95		27,539		2.39		-	7.95
	2017	38,343		2.45		-	7.95		20,580		2.45		-	7.95
	2018	21,016		2.53		-	7.95		9,032		2.63		-	7.95
	2019	6,582		2.53		-	6.00		2,589		2.63		-	5.05
	2020	481		2.95		-	4.57		160					4.57
	2021	83					4.57		83					4.57
Subtotal		121,551							92,887
Other long-term	2015	—					—		2,670					1.36
	2016	2,666					1.36		2,642					1.36
	2017	2,743					1.36		2,742					1.36
Subtotal		5,409							8,054
Total long-term borrowings		$	1,184,166						$	1,232,065

(1) Related to subordinated bank notes with a stated maturity of 2025 at September 30, 2015.

At September 30, 2015, TCF Bank had pledged loans secured by residential and commercial real estate and Federal Home Loan Bank ("FHLB") stock with an aggregate carrying value of $4.9 billion as collateral for FHLB advances. At September 30, 2015, $275.0 million of FHLB advances outstanding were prepayable monthly at TCF's option.

On February 27, 2015, TCF Bank issued $150.0 million of subordinated notes due February 27, 2025 with a fixed-rate coupon of 4.60% per annum (the "2025 Notes"), at a price to investors of 99.375%. In addition, TCF Bank incurred issuance costs of $1.4 million. Both the discount and issuance costs are amortized as interest expense over the respective term of the notes using the effective interest method. Interest is payable semi-annually, in arrears, on February 27 and August 27, and commenced on August 27, 2015. Simultaneously, TCF Bank entered into an interest rate swap with a total notional amount of $150.0 million designated as a fair value hedge of the 2025 Notes. See Note 12 of Notes to Consolidated Financial Statements, Derivative Instruments, for additional information regarding the interest rate swap.

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Derivative Instruments (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Net Investment Hedges
Fair value of derivatives
Period for settling forward foreign exchange contracts	30 days
Interest rate contracts
Fair value of derivatives
Amount of cash collateral posted (received)	$ 10,700
Interest rate contracts | Not Designated as Hedges
Fair value of derivatives
Derivative asset, notional amount	82,884	$ 101,166
Interest rate contracts | Designated as Hedges
Fair value of derivatives
Derivative asset, notional amount	$ 150,000
Derivative, fixed interest rate	4.60%
Interest Rate Swap | Not Designated as Hedges
Fair value of derivatives
Period for settling forward foreign exchange contracts	30 days
Interest Rate Swap | Not Designated as Hedges | Minimum
Fair value of derivatives
Period of contracts having fixed maturity dates	3 years
Interest Rate Swap | Not Designated as Hedges | Maximum
Fair value of derivatives
Period of contracts having fixed maturity dates	7 years
Interest rate lock commitments
Fair value of derivatives
Derivative, higher remaining maturity range	60 days
Interest rate lock commitments | Not Designated as Hedges
Fair value of derivatives
Derivative asset, notional amount	$ 36,632	15,124
Other Contract
Fair value of derivatives
Amount of cash collateral posted (received)	1,400
Forward foreign exchange contracts
Fair value of derivatives
Amount of cash collateral posted (received)	(2,900)
Forward foreign exchange contracts | Not Designated as Hedges
Fair value of derivatives
Derivative asset, notional amount	402,568	275,962
Forward foreign exchange contracts | Designated as Hedges
Fair value of derivatives
Derivative asset, notional amount	$ 45,973	$ 42,165

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Deposits

9 Months Ended

Sep. 30, 2015

Deposits [Abstract]

Deposits

Deposits

Deposits consisted of the following.

	At September 30, 2015						At December 31, 2014
(Dollars in thousands)	Weighted-Average Rate		Amount		% of Total		Weighted-Average Rate		Amount		% of Total
Checking:
Non-interest bearing	—	%	$	3,016,571	18.8	%	—	%	$	2,832,526	18.3	%
Interest bearing	0.02		2,361,453		14.7		0.04		2,362,717		15.3
Total checking	0.01		5,378,024		33.5		0.02		5,195,243		33.6
Savings	0.07		4,774,766		29.7		0.15		5,212,320		33.7
Money market	0.63		2,293,390		14.3		0.54		1,993,130		13.0
Certificates of deposit	0.88		3,612,253		22.5		0.78		3,049,189		19.7
Total deposits	0.29		$	16,058,433	100.0	%	0.26		$	15,449,882	100.0	%

Certificates of deposit had the following remaining maturities at September 30, 2015.

(In thousands)	Denominations  $100 Thousand or Greater		Denominations Less Than  $100 Thousand		Total
Maturity:
0-3 months	$	229,752	$	315,023	$	544,775
4-6 months	318,684		387,072		705,756
7-12 months	683,865		710,942		1,394,807
13-24 months	432,510		430,804		863,314
Over 24 months	58,169		45,432		103,601
Total	$	1,722,980	$	1,889,273	$	3,612,253

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Short-term Borrowings

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Short-term Borrowings

Short-term Borrowings

Selected information for short-term borrowings (borrowings with an original maturity of less than one year) consisted of the following.

	At September 30, 2015				At December 31, 2014
(Dollars in thousands)	Amount		Rate		Amount		Rate
Period end balance:
Securities sold under repurchase agreements	$	31,251	0.04	%	$	4,425	0.10	%
Line of Credit - TCF Commercial Finance Canada, Inc.	5,258		1.75		—		—
Total	$	36,509	0.29		$	4,425	0.10
Average daily balances for the year to date period ended:
Federal Home Loan Bank advances	$	—	—	%	$	74,385	0.26	%
Federal funds purchased	169		0.43		375		0.40
Securities sold under repurchase agreements	12,866		0.09		5,956		0.18
Line of Credit - TCF Commercial Finance Canada, Inc.	2,571		1.97		2,957		1.88
Total	$	15,606	0.40		$	83,673	0.31
Maximum month-end balances for the year to date period ended:
Federal Home Loan Bank advances	$	—	N.A.		$	250,000	N.A.
Securities sold under repurchase agreements	62,995		N.A.		4,425		N.A.
Line of Credit - TCF Commercial Finance Canada, Inc.	5,519		N.A.		11,751		N.A.
N.A. Not Applicable.

At September 30, 2015, the securities sold under short-term repurchase agreements were related to TCF Bank's Repurchase Investment Sweep Agreement product and were collateralized by mortgage-backed securities having a period end fair value of $41.2 million.

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Regulatory Capital Requirements

9 Months Ended

Sep. 30, 2015

Regulatory Capital Requirements [Abstract]

Regulatory Capital Requirements

Regulatory Capital Requirements

TCF and TCF Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possible additional discretionary, actions by the federal banking agencies that could have a material adverse effect on TCF. In general, TCF Bank may not declare or pay a dividend to TCF Financial in excess of 100% of its net retained profits for the current year combined with its net retained profits for the preceding two calendar years, which was $440.2 million at September 30, 2015, without prior approval of the Office of the Comptroller of the Currency ("OCC"). TCF Bank's ability to make capital distributions in the future may require regulatory approval and may be restricted by its regulatory authorities. TCF Bank's ability to make any such distributions will also depend on its earnings and ability to meet minimum regulatory capital requirements in effect during future periods. These capital adequacy standards may be higher in the future than existing minimum regulatory capital requirements.

The following table presents regulatory capital information for TCF and TCF Bank. Information presented for September 30, 2015 reflects the transition to the Basel III capital standard from previous regulatory capital adequacy guidelines under the Basel I framework. The Basel III capital standard phases in through 2019 and revises the definition of capital, increases minimum capital ratios, introduces regulatory capital buffers above those minimums, introduces a common equity Tier 1 capital ratio and revises the rules for calculating risk-weighted assets. Banks that are not advanced approaches institutions may make a one-time election to opt out of the requirement to include components of accumulated other comprehensive income (loss) in common equity Tier 1 capital. TCF has elected to opt-out of the accumulated other comprehensive income (loss) requirement.

	TCF						TCF Bank
(Dollars in thousands)	September 30, 2015			December 31, 2014			September 30, 2015			December 31, 2014			Well-capitalized Standard		Minimum Capital Requirement
Regulatory Capital:
Common equity Tier 1 capital	$	1,774,729		N.A.			$	1,952,196		N.A.
Tier 1 capital	2,054,711			$	1,919,887		1,970,696			$	1,836,019
Total capital	2,446,551			2,209,999			2,385,498			2,126,131
Regulatory Capital Ratios:
Common equity Tier 1 capital ratio	10.04		%	N.A			11.04		%	N.A.			6.50	%	4.50	%
Tier 1 risk-based capital ratio	11.62			11.76		%	11.15			11.25		%	8.00		6.00
Total risk-based capital ratio	13.84			13.54			13.49			13.03			10.00		8.00
Tier 1 leverage ratio	10.43			10.07			10.01			9.63			5.00		4.00

N.A. Not Applicable.

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Fair Values Disclosures (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Securities held to maturity	$ 204,129	$ 214,454
U.S. Government sponsored enterprises and federal agencies
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Securities held to maturity	199,552	209,538
Measurement of fair value on a recurring basis
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	815,476	490,618
Liabilities	22,037	21,420
Measurement of fair value on a recurring basis | Loans and leases held for sale
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	5,805	3,308
Measurement of fair value on a recurring basis | Forward foreign exchange contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	2,833	3,211
Liabilities	348	177
Measurement of fair value on a recurring basis | Interest rate contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	4,539	1,798
Liabilities	2,624	1,877
Measurement of fair value on a recurring basis | Interest rate lock commitments
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	643	285
Measurement of fair value on a recurring basis | Forward loan sales commitments
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	26	19
Liabilities	44	42
Measurement of fair value on a recurring basis | Assets held in trust for deferred compensation plans
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	18,635	18,703
Measurement of fair value on a recurring basis | Liabilities held in trust for deferred compensation plans
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Liabilities	18,635	18,703
Measurement of fair value on a recurring basis | Other contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Liabilities	386	621
Measurement of fair value on a recurring basis | U.S. Government sponsored enterprises and federal agencies
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	618,230	463,239
Measurement of fair value on a recurring basis | Mortgage-backed securities, Other
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	38	55
Measurement of fair value on a recurring basis | Obligations of states and political subdivisions
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	164,727
Measurement of fair value on a non-recurring basis
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	197,904	264,812
Securities held to maturity	1,177	1,516
Loans	140,535	164,897
Interest-only strips	7,578	41,204
Repossessed and returned assets	4,889	2,988
Measurement of fair value on a non-recurring basis | Consumer real estate
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Real estate owned	40,139	40,502
Measurement of fair value on a non-recurring basis | Commercial real estate
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Real estate owned	3,586	13,705
Level 1
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Securities held to maturity	0	0
Loans	0	0
Interest-only strips	0	0
Level 1 | Measurement of fair value on a recurring basis
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	18,635	18,703
Liabilities	18,635	18,703
Level 1 | Measurement of fair value on a recurring basis | Loans and leases held for sale
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 1 | Measurement of fair value on a recurring basis | Forward foreign exchange contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Liabilities	0	0
Level 1 | Measurement of fair value on a recurring basis | Interest rate contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Liabilities	0	0
Level 1 | Measurement of fair value on a recurring basis | Interest rate lock commitments
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 1 | Measurement of fair value on a recurring basis | Forward loan sales commitments
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Liabilities	0	0
Level 1 | Measurement of fair value on a recurring basis | Assets held in trust for deferred compensation plans
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	18,635	18,703
Level 1 | Measurement of fair value on a recurring basis | Liabilities held in trust for deferred compensation plans
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Liabilities	18,635	18,703
Level 1 | Measurement of fair value on a recurring basis | Other contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Liabilities	0	0
Level 1 | Measurement of fair value on a recurring basis | U.S. Government sponsored enterprises and federal agencies
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 1 | Measurement of fair value on a recurring basis | Mortgage-backed securities, Other
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 1 | Measurement of fair value on a recurring basis | Obligations of states and political subdivisions
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0
Level 1 | Measurement of fair value on a non-recurring basis
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Securities held to maturity	0	0
Loans	0	0
Interest-only strips	0	0
Repossessed and returned assets	0	0
Level 1 | Measurement of fair value on a non-recurring basis | Consumer real estate
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Real estate owned	0	0
Level 1 | Measurement of fair value on a non-recurring basis | Commercial real estate
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Real estate owned	0	0
Level 2
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Securities held to maturity	207,432	217,418
Loans	0	0
Interest-only strips	0	0
Level 2 | Measurement of fair value on a recurring basis
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	790,329	468,248
Liabilities	2,972	2,054
Level 2 | Measurement of fair value on a recurring basis | Loans and leases held for sale
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 2 | Measurement of fair value on a recurring basis | Forward foreign exchange contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	2,833	3,211
Liabilities	348	177
Level 2 | Measurement of fair value on a recurring basis | Interest rate contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	4,539	1,798
Liabilities	2,624	1,877
Level 2 | Measurement of fair value on a recurring basis | Interest rate lock commitments
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 2 | Measurement of fair value on a recurring basis | Forward loan sales commitments
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Liabilities	0	0
Level 2 | Measurement of fair value on a recurring basis | Assets held in trust for deferred compensation plans
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 2 | Measurement of fair value on a recurring basis | Liabilities held in trust for deferred compensation plans
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Liabilities	0	0
Level 2 | Measurement of fair value on a recurring basis | Other contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Liabilities	0	0
Level 2 | Measurement of fair value on a recurring basis | U.S. Government sponsored enterprises and federal agencies
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	618,230	463,239
Level 2 | Measurement of fair value on a recurring basis | Mortgage-backed securities, Other
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 2 | Measurement of fair value on a recurring basis | Obligations of states and political subdivisions
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	164,727
Level 2 | Measurement of fair value on a non-recurring basis
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	3,431	6,402
Securities held to maturity	0	0
Loans	0	0
Interest-only strips	0	0
Repossessed and returned assets	3,431	1,563
Level 2 | Measurement of fair value on a non-recurring basis | Consumer real estate
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Real estate owned	0	0
Level 2 | Measurement of fair value on a non-recurring basis | Commercial real estate
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Real estate owned	0	4,839
Level 3
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Securities held to maturity	4,577	4,916
Loans	16,619	18,724
Interest-only strips	54,066	73,058
Level 3 | Measurement of fair value on a recurring basis
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	6,512	3,667
Liabilities	430	663
Level 3 | Measurement of fair value on a recurring basis | Loans and leases held for sale
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	5,805	3,308
Level 3 | Measurement of fair value on a recurring basis | Forward foreign exchange contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Liabilities	0	0
Level 3 | Measurement of fair value on a recurring basis | Interest rate contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Liabilities	0	0
Level 3 | Measurement of fair value on a recurring basis | Interest rate lock commitments
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	643	285
Level 3 | Measurement of fair value on a recurring basis | Forward loan sales commitments
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	26	19
Liabilities	44	42
Level 3 | Measurement of fair value on a recurring basis | Assets held in trust for deferred compensation plans
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 3 | Measurement of fair value on a recurring basis | Liabilities held in trust for deferred compensation plans
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Liabilities	0	0
Level 3 | Measurement of fair value on a recurring basis | Other contracts
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Liabilities	386	621
Level 3 | Measurement of fair value on a recurring basis | U.S. Government sponsored enterprises and federal agencies
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0	0
Level 3 | Measurement of fair value on a recurring basis | Mortgage-backed securities, Other
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	38	55
Level 3 | Measurement of fair value on a recurring basis | Obligations of states and political subdivisions
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	0
Level 3 | Measurement of fair value on a non-recurring basis
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Fair value carrying amount	194,473	258,410
Securities held to maturity	1,177	1,516
Loans	140,535	164,897
Interest-only strips	7,578	41,204
Repossessed and returned assets	1,458	1,425
Level 3 | Measurement of fair value on a non-recurring basis | Consumer real estate
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Real estate owned	40,139	40,502
Level 3 | Measurement of fair value on a non-recurring basis | Commercial real estate
Fair Value, Assets and liabilities measured at fair value on Recurring and Nonrecurring basis
Real estate owned	$ 3,586	$ 8,866

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Fair Values Disclosures (Details 3) - Loans and leases held for sale - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value carrying amount	$ 5,805	$ 3,308
Aggregate unpaid principal amount	5,641	3,205
Fair value carrying amount less aggregate unpaid principal	164	$ 103
Gain (Loss) on Sales of Consumer Loans
Fair Value, Option, Quantitative Disclosures [Line Items]
Net gain from initial measurement of the above loans and subsequent changes in fair value for loans outstanding	$ 4,700

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Fair Values Disclosures (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Measurement of fair value on a non-recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	$ 2.9	$ 2.8	$ 10.4	$ 9.0

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Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of derivative instruments

The following tables summarize TCF's outstanding derivative instruments as of September 30, 2015 and December 31, 2014. See Note 13, Fair Value Disclosures, for additional information.

	At September 30, 2015
(In thousands)	Notional Amount		Gross Amounts Recognized		Gross Amounts Offset			Net Amount Presented(1)
Derivative Assets:
Derivatives designated as hedges:
Interest rate contracts	$	150,000	$	2,029	$	—		$	2,029
Forward foreign exchange contracts	45,973		327		—			327
Derivatives not designated as hedges:
Forward foreign exchange contracts	402,568		2,506		(1,176		)	1,330
Interest rate contracts	82,884		2,510		—			2,510
Interest rate lock commitments	36,632		643		—			643
Total derivative assets			$	8,015	$	(1,176	)	$	6,839
Derivative Liabilities:
Derivatives not designated as hedges:
Forward foreign exchange contracts	$	112,680	$	348	$	(168	)	$	180
Interest rate contracts	82,884		2,624		(2,624		)	—
Other contracts	13,804		386		(386		)	—
Total derivative liabilities			$	3,358	$	(3,178	)	$	180
	At December 31, 2014
(In thousands)	Notional Amount		Gross Amounts Recognized		Gross Amounts Offset			Net Amount Presented(1)
Derivative Assets:
Derivatives designated as hedges:
Forward foreign exchange contracts	$	42,165	$	509	$	—		$	509
Derivatives not designated as hedges:
Forward foreign exchange contracts	275,962		2,702		(1,179		)	1,523
Interest rate contracts	101,166		1,798		—			1,798
Interest rate lock commitments	15,124		285		—			285
Total derivative assets			$	5,294	$	(1,179	)	$	4,115
Derivative Liabilities:
Derivatives not designated as hedges:
Forward foreign exchange contracts	$	189,310	$	177	$	(29	)	$	148
Interest rate contracts	101,166		1,877		(1,877		)	—
Other contracts	13,804		621		(621		)	—
Total derivative liabilities			$	2,675	$	(2,527	)	$	148

(1)  All amounts were offset in the Consolidated Statements of Financial Condition.

Schedule of pre-tax impact of derivative activity

The following table summarizes the pre-tax impact of derivative activity within the Consolidated Statements of Income and the Consolidated Statements of Comprehensive Income.

		Three Months Ended September 30,					Nine Months Ended September 30,
(In thousands)	Income Statement Location	2015			2014		2015			2014
Consolidated Statements of Income
Fair value hedges:
Interest rate contracts	Non-interest income	$	6,296		$	—	$	2,029		$	—
Non-derivative hedged items	Non-interest income	(5,425		)	—		(1,862		)	—
Not designated as hedges:
Forward foreign exchange contracts	Non-interest expense	26,574			21,533		55,866			20,882
Interest rate lock commitments	Non-interest income	189			159		359			159
Interest rate contracts	Non-interest income	(48		)	10		(28		)	(40		)
Net gain (loss) recognized		$	27,586		$	21,702	$	56,364		$	21,001
Consolidated Statements of Comprehensive Income
Net investment hedges:
Forward foreign exchange contracts	Other comprehensive income (loss)	$	2,858		$	1,849	$	5,772		$	1,677
Net unrealized gain (loss)		$	2,858		$	1,849	$	5,772		$	1,677

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Allowance for Loan and Lease Losses and Credit Quality Information (Details 5) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Loan Modifications for Borrowers with Financial Difficulties
Financing Receivable, Modifications, Recorded Investment	$ 251.4		$ 251.4		$ 298.5
Total Accruing TDR Loans	150.2		150.2		193.8
Additional funds committed to consumer real estate and commercial loans classified as TDRs	1.0		1.0		3.9
Commercial Borrower
Loan Modifications for Borrowers with Financial Difficulties
Financing Receivable, Modifications, Recorded Investment	50.5		50.5		91.6
Total Accruing TDR Loans	40.5		40.5		80.4
Loans Removed from Troubled Debt Restructurings Status			9.0	$ 11.1
Reserves for losses on accruing loan TDRs	$ 0.1		$ 0.1		$ 1.4
Reserves for losses on accruing loan TDRs (as a percent)	0.20%		0.20%		1.70%
Delinquency period of performing loans and leases			60 days		60 days
Consumer Real Estate Loan | Consumer Borrower
Loan Modifications for Borrowers with Financial Difficulties
Financing Receivable, Modifications, Recorded Investment	$ 190.7		$ 190.7		$ 199.6
Total Accruing TDR Loans	$ 107.6		$ 107.6		111.9
Average yield on TDR loans (as a percent)	4.10%	3.30%	4.00%	3.30%
Contractual average rate of TDR loans (as a percent)	6.80%	6.90%	6.70%	6.80%
Reserves for losses on accruing loan TDRs	$ 19.1		$ 19.1		$ 20.4
Reserves for losses on accruing loan TDRs (as a percent)	17.80%		17.80%		18.20%
Assumed remaining re-default rate used in determining impairment, low end of range (as a percent)	5.00%		5.00%		4.00%
Financing Receivable, Modifications, Impaired Financing Receivable, Redefault Rate, High End of Range	20.00%		20.00%		22.00%
Percent of accruing TDR loans more than 60 days delinquent	1.60%		1.60%		2.40%
Delinquency period of performing loans and leases			60 days		60 days
Minimum period to be considered for related third-party first mortgage liens to be past due before Junior lien loans are placed on non-accrual status			90 days		90 days
Portion of non-accrual TDR balance, loans discharged in Chapter 7 bankruptcy that are not reaffirmed	$ 53.3		$ 53.3		$ 50.0
Portion of non-accrual TDR balance, loans discharged in Chapter 7 bankruptcy that are not reaffirmed (as a percent)	64.10%		64.10%		57.00%
Portion of non-accrual TDR balance, loans discharged in Chapter 7 bankruptcy that are not reaffirmed, current (as a percent)	76.40%		76.40%		68.40%
Consumer Real Estate Loan | Consumer Borrower | Junior lien
Loan Modifications for Borrowers with Financial Difficulties
Foregone Interest Income	$ 0.2	$ 0.3	$ 0.6	$ 0.9
Consumer Real Estate Loan | Consumer Borrower | First mortgage lien
Loan Modifications for Borrowers with Financial Difficulties
Foregone Interest Income	$ 0.5	$ 4.3	$ 1.6	$ 12.9

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Earnings Per Common Share

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings Per Common Share

TCF's restricted stock awards that pay non-forfeitable common stock dividends meet the criteria of a participating security. Accordingly, earnings per share is calculated using the two-class method, under which earnings are allocated to both common shares and participating securities.

	Three Months Ended   September 30,				Nine Months Ended   September 30,
(Dollars in thousands, except per-share data)	2015		2014		2015		2014
Basic Earnings Per Common Share:
Net income available to common stockholders	$	47,728	$	47,470	$	130,090	$	135,658
Earnings allocated to participating securities	12		12		34		35
Earnings allocated to common stock	$	47,716	$	47,458	$	130,056	$	135,623
Weighted-average common shares outstanding for basic earnings per common share	165,990,432		163,901,076		165,479,029		163,310,983
Basic earnings per common share	$	0.29	$	0.29	$	0.79	$	0.83
Diluted Earnings Per Common Share:
Earnings allocated to common stock	$	47,716	$	47,458	$	130,056	$	135,623
Weighted-average common shares outstanding used in basic earnings per common share calculation	165,990,432		163,901,076		165,479,029		163,310,983
Net dilutive effect of:
Non-participating restricted stock	355,408		322,210		312,402		250,060
Stock options	210,280		256,325		221,908		262,286
Weighted-average common shares outstanding for diluted earnings per common share	166,556,120		164,479,611		166,013,339		163,823,329
Diluted earnings per common share	$	0.29	$	0.29	$	0.78	$	0.83

All shares of restricted stock are deducted from weighted-average shares outstanding for the computation of basic earnings per common share. Shares of performance-based restricted stock and restricted stock units are included in the calculation of diluted earnings per common share, using the treasury stock method, at the beginning of the quarter in which the performance goals have been achieved. All other shares of restricted stock, which vest over specified time periods, stock options and warrants are included in the calculation of diluted earnings per common share, using the treasury stock method.

For the three and nine months ended September 30, 2015, there were 4.4 million and 4.6 million, respectively, of outstanding shares related to non-participating restricted stock, stock options and warrants that were not included in the computation of diluted earnings per share because they were anti-dilutive.For the three and nine months ended September 30, 2014, there were 4.1 million and 4.2 million, respectively, of outstanding shares related to non-participating restricted stock, stock options and warrants that were not included in the computation of diluted earnings per share because they were anti-dilutive.

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Loans and Leases (Tables)

9 Months Ended

Sep. 30, 2015

Receivables [Abstract]

Information about loans and leases

Loans and leases consisted of the following.

(Dollars in thousands)	At September 30, 2015		At December 31, 2014		Percent Change
Consumer real estate:
First mortgage lien	$	2,724,594	$	3,139,152	(13.2	)%
Junior lien	2,889,120		2,543,212		13.6
Total consumer real estate	5,613,714		5,682,364		(1.2	)
Commercial:
Commercial real estate:
Permanent	2,233,722		2,382,144		(6.2	)
Construction and development	328,106		242,111		35.5
Total commercial real estate	2,561,828		2,624,255		(2.4	)
Commercial business	550,497		533,410		3.2
Total commercial	3,112,325		3,157,665		(1.4	)
Leasing and equipment finance	3,873,581		3,745,322		3.4
Inventory finance	2,153,385		1,877,090		14.7
Auto finance	2,427,367		1,915,061		26.8
Other	20,674		24,144		(14.4	)
Total loans and leases(1)	$	17,201,046	$	16,401,646	4.9

(1) Loans and leases are reported at historical cost including net direct fees and costs associated with originating and acquiring loans and leases, lease residuals, unearned income and unamortized purchase premiums and discounts. The aggregate amount of these loan and lease adjustments was $55.1 million and $43.4 million at September 30, 2015 and December 31, 2014, respectively.

Loan sales transaction table

The following table summarizes the carrying value of consumer real estate loans and consumer auto loans sold with servicing retained, the cash received, retained interest-only strips and the recognized net gains for the nine months ended September 30, 2015 and 2014. No servicing assets or liabilities related to consumer real estate or consumer auto loans were recorded within TCF's Consolidated Statements of Financial Condition, as the contractual servicing fees are adequate to compensate TCF for its servicing responsibilities based on the amount demanded by the marketplace.

	For the Nine Months Ended September 30,
(In thousands)	2015						2014
	Consumer Real Estate Loans			Consumer Auto Loans			Consumer Real Estate Loans			Consumer Auto Loans
Sales proceeds, net(1)	$	898,387		$	1,113,036		$	827,831		$	989,811
Recorded investment in loans sold, including accrued interest	(878,468		)	(1,084,348		)	(808,627		)	(970,444		)
Interest-only strips, initial value	6,948			—			9,135			12,137
Net gains(2)	$	26,867		$	28,688		$	28,339		$	31,504

(1) Includes transaction fees and other sales related costs.

(2) Excludes subsequent adjustments and valuation adjustments while held for sale.

Interest only strips and contractual liabilites

Total interest-only strips and the contractual liabilities related to loan sales are shown below.

(In thousands)	At September 30, 2015		At December 31, 2014
Interest-only strips attributable to:
Consumer real estate loan sales	$	21,138	$	21,198
Consumer auto loan sales	29,561		48,591
Contractual liabilities attributable to:
Consumer real estate loan sales	$	723	$	563
Consumer auto loan sales	365		699

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Allowance for Loan and Lease Losses and Credit Quality Information (Details 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	$ 16,994,936		$ 16,994,936		$ 16,184,912
Non-accrual	206,110		206,110		216,734
Total loans and leases	17,201,046		17,201,046		16,401,646
Interest income recognized on loans and leases in non-accrual status and contractual interest that would have been recorded had the loans and leases performed in accordance with their original contractual terms
Contractual interest due on non-accrual loans and leases	5,428	$ 6,720	15,992	$ 20,259
Interest income recognized on non-accrual loans and leases	1,021	2,531	3,319	6,411
Unrecognized interest income	4,407	$ 4,189	12,673	$ 13,848
Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	16,965,357		16,965,357		16,162,476
60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	27,392		27,392		20,426
90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	2,187		2,187		2,010
Financing receivables
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	16,994,541		16,994,541		16,182,807
Non-accrual	206,110		206,110		216,734
Total loans and leases	17,200,651		17,200,651		16,399,541
Financing receivables | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	16,964,966		16,964,966		16,160,459
Financing receivables | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	27,392		27,392		20,343
Financing receivables | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	2,183		2,183		2,005
Consumer Real Estate
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	5,441,772		5,441,772		5,509,093
Non-accrual	171,942		171,942		173,271
Total loans and leases	5,613,714		5,613,714		5,682,364
Consumer Real Estate | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	5,429,940		5,429,940		5,493,632
Consumer Real Estate | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	10,928		10,928		15,267
Consumer Real Estate | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	904		904		194
First mortgage lien
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,594,251		2,594,251		3,001,362
Non-accrual	130,343		130,343		137,790
Total loans and leases	2,724,594		2,724,594		3,139,152
First mortgage lien | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,584,735		2,584,735		2,987,992
First mortgage lien | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	8,612		8,612		13,176
First mortgage lien | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	904		904		194
Junior lien
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,847,521		2,847,521		2,507,731
Non-accrual	41,599		41,599		35,481
Total loans and leases	2,889,120		2,889,120		2,543,212
Junior lien | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,845,205		2,845,205		2,505,640
Junior lien | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	2,316		2,316		2,091
Junior lien | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	0		0		0
Consumer real estate loans to customers in bankruptcy
Accruing and Non-accrual Loans and Leases
Non-accrual	19,243		19,243		12,284
Total loans and leases	47,272		47,272		60,262
Consumer real estate loans to customers in bankruptcy | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	28,029		28,029		47,731
Consumer real estate loans to customers in bankruptcy | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	0		0		247
Total commercial
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	3,097,766		3,097,766		3,132,630
Non-accrual	14,559		14,559		25,035
Total loans and leases	3,112,325		3,112,325		3,157,665
Total commercial | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	3,090,298		3,090,298		3,132,630
Total commercial | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	7,468		7,468		0
Total commercial | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	0		0		0
Commercial real estate
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,550,943		2,550,943		2,599,701
Non-accrual	10,885		10,885		24,554
Total loans and leases	2,561,828		2,561,828		2,624,255
Commercial real estate | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,543,476		2,543,476		2,599,701
Commercial real estate | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	7,467		7,467		0
Commercial real estate | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	0		0		0
Commercial business
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	546,823		546,823		532,929
Non-accrual	3,674		3,674		481
Total loans and leases	550,497		550,497		533,410
Commercial business | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	546,822		546,822		532,929
Commercial business | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	1		1		0
Commercial business | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	0		0		0
Leasing and equipment finance
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	3,863,028		3,863,028		3,730,664
Non-accrual	10,197		10,197		12,670
Total loans and leases	3,873,225		3,873,225		3,743,334
Leasing and equipment finance | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	3,855,752		3,855,752		3,728,115
Leasing and equipment finance | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	6,988		6,988		2,242
Leasing and equipment finance | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	288		288		307
Inventory Finance
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,151,674		2,151,674		1,875,008
Non-accrual	1,711		1,711		2,082
Total loans and leases	2,153,385		2,153,385		1,877,090
Inventory Finance | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,151,479		2,151,479		1,874,933
Inventory Finance | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	117		117		49
Inventory Finance | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	78		78		26
Auto finance
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,419,630		2,419,630		1,911,268
Non-accrual	7,698		7,698		3,676
Total loans and leases	2,427,328		2,427,328		1,914,944
Auto finance | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	2,416,861		2,416,861		1,907,005
Auto finance | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	1,866		1,866		2,785
Auto finance | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	903		903		1,478
Other
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	20,671		20,671		24,144
Non-accrual	3		3		0
Total loans and leases	20,674		20,674		24,144
Other | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	20,636		20,636		24,144
Other | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	25		25		0
Other | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	10		10		0
Portfolios acquired with deteriorated credit quality
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	395		395		2,105
Non-accrual	0		0		0
Total loans and leases	395		395		2,105
Portfolios acquired with deteriorated credit quality | Current-59 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Current and Delinquent and Accruing	391		391		2,017
Portfolios acquired with deteriorated credit quality | 60-89 Days Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	0		0		83
Portfolios acquired with deteriorated credit quality | 90 Days or More Delinquent and Accruing
Accruing and Non-accrual Loans and Leases
Delinquent and Accruing	$ 4		$ 4		$ 5

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Securities Available for Sale and Securities Held to Maturity (Details 2) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Gross unrealized losses and fair value of securities available for sale that is in a loss position
Less than 12 months, Fair Value	$ 231,015	$ 0
Less than 12 months, Unrealized Losses	890	0
12 months or more, Fair Value	0	198,550
12 months or more, Unrealized Losses	0	741
Total, fair value	231,015	198,550
Total, Unrealized Losses	890	741
Gross unrealized losses and fair value of securities held to maturity that is in a loss position
Less than 12 months, Fair Value	4,055	2,602
Less than 12 months, Unrealized Losses	38	109
12 months or more, Fair Value	1,855	0
12 months or more, Unrealized Losses	93	0
Total, fair value	5,910	2,602
Total, Unrealized Losses	131	109
U.S. Government sponsored enterprises and federal agencies
Gross unrealized losses and fair value of securities available for sale that is in a loss position
Less than 12 months, Fair Value	230,174	0
Less than 12 months, Unrealized Losses	886	0
12 months or more, Fair Value	0	198,550
12 months or more, Unrealized Losses	0	741
Total, fair value	230,174	198,550
Total, Unrealized Losses	886	741
Gross unrealized losses and fair value of securities held to maturity that is in a loss position
Less than 12 months, Fair Value	4,055	2,602
Less than 12 months, Unrealized Losses	38	109
12 months or more, Fair Value	1,855	0
12 months or more, Unrealized Losses	93	0
Total, fair value	5,910	2,602
Total, Unrealized Losses	131	$ 109
Obligations of states and political subdivisions
Gross unrealized losses and fair value of securities available for sale that is in a loss position
Less than 12 months, Fair Value	841
Less than 12 months, Unrealized Losses	4
12 months or more, Fair Value	0
12 months or more, Unrealized Losses	0
Total, fair value	841
Total, Unrealized Losses	$ 4

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income attributable to TCF Financial Corporation	$ 52,575	$ 52,317	$ 144,631	$ 150,199
Securities available for sale:
Unrealized gains (losses) arising during the period	9,972	(862)	2,971	19,652
Reclassification of net (gains) losses to net income	281	254	871	(375)
Net investment hedges:
Unrealized gains (losses) arising during the period	2,858	1,849	5,772	1,677
Foreign currency translation adjustment:
Unrealized gains (losses) arising during the period	(3,049)	(2,066)	(6,318)	(2,043)
Recognized postretirement prior service cost:
Reclassification of net (gains) losses to net income	(12)	(12)	(35)	(35)
Income tax (expense) benefit	(4,947)	(464)	(3,618)	(7,879)
Total other comprehensive income (loss)	5,103	(1,301)	(357)	10,997
Comprehensive income	$ 57,678	$ 51,016	$ 144,274	$ 161,196

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Securities Available for Sale and Securities Held to Maturity

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Securities Available for Sale and Securities Held to Maturity

Securities Available for Sale and Securities Held to Maturity

Securities consisted of the following.

	At September 30, 2015									At December 31, 2014
(Dollars in thousands)	Amortized Cost			Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost			Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	615,798		$	3,318	$	886	$	618,230	$	461,575		$	2,405	$	741	$	463,239
Other	38			—		—		38		55			—		—		55
Obligations of states and political subdivisions	162,524			2,207		4		164,727		—			—		—		—
Total securities available for sale	$	778,360		$	5,525	$	890	$	782,995	$	461,630		$	2,405	$	741	$	463,294
Weighted-average yield	2.36		%							2.62		%
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	199,552		$	8,011	$	131	$	207,432	$	209,538		$	7,988	$	109	$	217,417
Other securities	4,577			—		—		4,577		4,916			—		—		4,916
Total securities held to maturity	$	204,129		$	8,011	$	131	$	212,009	$	214,454		$	7,988	$	109	$	222,333
Weighted-average yield	2.65		%							2.64		%

During the three and nine months ended September 30, 2015, TCF sold $0.2 million of securities available for sale and received cash proceeds of $0.2 million. Gross realized gains of $29 thousand and $1.2 million were recognized on sales of securities available for sale during the third quarter and first nine months of 2014, respectively. At September 30, 2015 and December 31, 2014, mortgage-backed securities with a carrying value of $42.4 million and $8.2 million, respectively, were pledged as collateral to secure certain deposits and borrowings. There were no impairment charges recognized on securities available for sale during the first nine months of 2015 and 2014. Unrealized losses on securities available for sale are due to changes in interest rates. TCF has the ability and intent to hold these investments until a recovery of fair value occurs.

There were no transfers from securities available for sale to securities held to maturity during the nine months ended September 30, 2015. During the nine months ended September 30, 2014, TCF transferred $191.7 million of available for sale mortgage-backed securities to held to maturity, reflecting TCF's intent and ability to hold these securities to maturity. At September 30, 2015 and December 31, 2014, the unrealized holding loss on the transferred securities retained in accumulated other comprehensive income (loss) totaled $15.1 million and $16.0 million, respectively. These amounts are amortized over the remaining lives of the transferred securities. Other held to maturity securities consist primarily of non-trading mortgage-backed securities and other bonds which qualify for investment credit under the Community Reinvestment Act. During the nine months ended September 30, 2015 and 2014, TCF recorded an impairment charge of $0.3 million and $0.1 million, respectively, on held to maturity securities, which had a carrying value of $4.6 million and $5.0 million, respectively.

The following tables show the gross unrealized losses and fair value of securities available for sale and securities held to maturity at September 30, 2015 and December 31, 2014, aggregated by investment category and the length of time the securities were in a continuous loss position.

	At September 30, 2015
	Less than 12 months				12 months or more				Total
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	230,174	$	886	$	—	$	—	$	230,174	$	886
Obligations of states and political subdivisions	841		4		—		—		841		4
Total securities available for sale	$	231,015	$	890	$	—	$	—	$	231,015	$	890
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	4,055	$	38	$	1,855	$	93	$	5,910	$	131
Total securities held to maturity	$	4,055	$	38	$	1,855	$	93	$	5,910	$	131

	At December 31, 2014
	Less than 12 months				12 months or more				Total
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	—	$	198,550	$	741	$	198,550	$	741
Total securities available for sale	$	—	$	—	$	198,550	$	741	$	198,550	$	741
Securities held to maturity:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	2,602	$	109	$	—	$	—	$	2,602	$	109
Total securities held to maturity	$	2,602	$	109	$	—	$	—	$	2,602	$	109

The amortized cost, fair value and yield of securities available for sale and securities held to maturity by contractual maturity at September 30, 2015 and December 31, 2014 are shown below. The remaining contractual principal maturities do not consider possible prepayments. Remaining expected maturities will differ from contractual maturities because borrowers may have the right to prepay. Yields on securities have not been adjusted for tax exempt status.

	At September 30, 2015						At December 31, 2014
(Dollars in thousands)	Amortized Cost		Fair Value		Yield		Amortized Cost		Fair Value		Yield
Securities available for sale:
Due in one year or less	$	2	$	2	9.00	%	$	4	$	4	11.63	%
Due in 1-5 years	43		43		3.24		76		76		4.53
Due in 5-10 years	220,673		223,617		2.05		86,806		87,594		1.93
Due after 10 years	557,642		559,333		2.48		374,744		375,620		2.78
Total securities available for sale	$	778,360	$	782,995	2.36		$	461,630	$	463,294	2.62
Securities held to maturity:
Due in one year or less	$	100	$	100	2.00	%	$	500	$	500	2.00	%
Due in 1-5 years	1,700		1,700		2.65		2,500		2,500		3.08
Due in 5-10 years	1,600		1,600		3.25		400		400		3.00
Due after 10 years	200,729		208,609		2.64		211,054		218,933		2.64
Total securities held to maturity	$	204,129	$	212,009	2.65		$	214,454	$	222,333	2.64

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Stock Compensation (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Stock options outstanding and exercisable
Unrecognized stock compensation expense for restricted stock awards and options (in dollars)	$ 24,700,000
Weighted-average amortization period	2 years 3 months 18 days
Restricted Stock
Restricted stock, shares activity
Outstanding at the beginning of the period (in shares)	2,858,494
Granted (in shares)	711,683
Forfeited/cancelled (in shares)	(130,632)
Vested (in shares)	(201,809)
Outstanding at the end of the period (in shares)	3,237,736	2,858,494
Restricted Stock, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Outstanding at the beginning (in dollars per share)	$ 12.73
Weighted-Average Grant Date Fair Value, Granted (in dollars per share)	14.49
Weighted-Average Grant Date Fair Value, Forfeited/cancelled (in dollars per share)	13.18
Weighted-Average Grant Date Fair Value, Vested (in dollars per share)	13.21
Weighted-Average Grant Date Fair Value, Outstanding at the end (in dollars per share)	13.06	$ 12.73
Restricted Stock | Minimum
Restricted stock, price range
Grant Date Fair Value, Outstanding at the beginning (in dollars per share)	6.16	6.16
Grant Date Fair Value, Granted (in dollars per share)	14.17
Grant Date Fair Value, Forfeited/canceled (in dollars per share)	6.80
Grant Date Fair Value, Vested (in dollars per share)	9.65
Grant Date Fair Value, Outstanding at the end (in dollars per share)	6.16	6.16
Restricted Stock | Maximum
Restricted stock, price range
Grant Date Fair Value, Outstanding at the beginning (in dollars per share)	16.28	16.02
Grant Date Fair Value, Granted (in dollars per share)	16.28
Grant Date Fair Value, Forfeited/canceled (in dollars per share)	15.96
Grant Date Fair Value, Vested (in dollars per share)	15.96
Grant Date Fair Value, Outstanding at the end (in dollars per share)	$ 16.28	$ 16.02
Performance-based restricted stock
Stock options outstanding and exercisable
Outstanding number of shares to vest only if certain return on asset goals, and service conditions are achieved	1,100,000
Stock Options
Stock options, shares activity
Outstanding at the beginning of the period (in shares)	1,579,000
Granted (in shares)	0
Exercised (in shares)	(200,000)
Forfeited/canceled (in shares)	0
Vested (in shares)	0
Outstanding at the end of the period (in shares)	1,379,000	1,579,000
Stock Options, Exercise Price Range
Weighted- Average Remaining Contractual Life in Years	2 years 5 months 1 day	2 years 11 months 23 days
Weighted-Average Exercise Price
Weighted-Average Exercise Price, Outstanding at the beginning (in dollars per share)	$ 13.91
Weighted-Average Exercise Price, Granted (in dollars per share)	0.00
Weighted-Average Exercise Price, Exercised (in dollars per share)	12.85
Weighted-Average Exercise Price, Forfeited/canceled (in dollars per share)	0.00
Weighted-Average Exercise Price, Vested (in dollars per share)	0.00
Weighted-Average Exercise Price, Outstanding at the end (in dollars per share)	$ 14.07	$ 13.91
Stock options outstanding and exercisable
Stock Options Exercisable (in shares)	1,379,000
Stock Options Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 14.07
Stock Options | Minimum
Stock Options, Exercise Price Range
Exercise price, Outstanding at the beginning (in dollars per share)	12.85	12.85
Exercise price, Granted (in dollars per share)	0
Exercise price, Exercised (in dollars per share)	12.85
Exercise price, Forfeited/canceled (in dollars per share)	0
Exercise price, Vested (in dollars per share)	0
Exercise price, Outstanding at the end (in dollars per share)	12.85	12.85
Stock options outstanding and exercisable
Exercise price, options exercisable (in dollars per share)	12.85
Stock Options | Maximum
Stock Options, Exercise Price Range
Exercise price, Outstanding at the beginning (in dollars per share)	15.75	15.75
Exercise price, Granted (in dollars per share)	0
Exercise price, Exercised (in dollars per share)	12.85
Exercise price, Forfeited/canceled (in dollars per share)	0
Exercise price, Vested (in dollars per share)	0
Exercise price, Outstanding at the end (in dollars per share)	15.75	$ 15.75
Stock options outstanding and exercisable
Exercise price, options exercisable (in dollars per share)	$ 15.75
Performance Shares
Restricted stock, shares activity
Granted (in shares)	71,404
Stock options outstanding and exercisable
Award requisite service period	3 years
Restricted stock, maximum multiplier	150.00%
Performance Shares | Minimum
Stock options outstanding and exercisable
Peer group, asset threshold			$ 10,000,000,000.0
Performance Shares | Maximum
Stock options outstanding and exercisable
Peer group, asset threshold			$ 50,000,000,000.0

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Earnings Per Common Share (Details 2) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Non-participating restricted stock, stock options and warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from computation of earnings per share (in shares)	4.4	4.1	4.6	4.2

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Allowance for Loan and Lease Losses and Credit Quality Information (Tables)

9 Months Ended

Sep. 30, 2015

Allowance for Loan and Lease Losses and Credit Quality Information

Allowance for loan and lease losses and other information

The following tables provide the allowance for loan and lease losses and other related information. TCF's key credit quality indicator is the receivable's payment performance status, defined as accruing or non-accruing.

(In thousands)	Consumer Real Estate			Commercial			Leasing and Equipment Finance			Inventory Finance			Auto Finance			Other			Total
At or For the Three Months Ended September 30, 2015:
Balance, beginning of period	$	74,687		$	30,205		$	17,669		$	10,879		$	22,061		$	614		$	156,115
Charge-offs	(6,310		)	(487		)	(1,583		)	(463		)	(4,594		)	(1,901		)	(15,338		)
Recoveries	1,832			514			702			319			915			1,115			5,397
Net (charge-offs) recoveries	(4,478		)	27			(881		)	(144		)	(3,679		)	(786		)	(9,941		)
Provision for credit losses	780			(226		)	1,389			546			6,750			779			10,018
Other	(660		)	—			—			(160		)	(1,410		)	—			(2,230		)
Balance, end of period	$	70,329		$	30,006		$	18,177		$	11,121		$	23,722		$	607		$	153,962
At or For the Three Months Ended September 30, 2014:
Balance, beginning of period	$	161,349		$	31,361		$	19,184		$	9,539		$	13,865		$	783		$	236,081
Charge-offs	(24,072		)	(262		)	(2,350		)	(548		)	(2,958		)	(2,448		)	(32,638		)
Recoveries	1,912			406			1,157			284			494			1,448			5,701
Net (charge-offs) recoveries	(22,160		)	144			(1,193		)	(264		)	(2,464		)	(1,000		)	(26,937		)
Provision for credit losses	6,636			1,785			(391		)	411			6,302			996			15,739
Other	(700		)	—			—			(130		)	(1,395		)	—			(2,225		)
Balance, end of period	$	145,125		$	33,290		$	17,600		$	9,556		$	16,308		$	779		$	222,658
(In thousands)	Consumer Real Estate			Commercial			Leasing and Equipment Finance			Inventory Finance			Auto Finance			Other			Total
At or For the Nine Months Ended September 30, 2015:
Balance, beginning of period	$	85,361		$	31,367		$	18,446		$	10,020		$	18,230		$	745		$	164,169
Charge-offs	(27,074		)	(3,944		)	(5,447		)	(1,812		)	(12,943		)	(5,226		)	(56,446		)
Recoveries	5,626			2,878			2,205			626			2,253			3,902			17,490
Net (charge-offs) recoveries	(21,448		)	(1,066		)	(3,242		)	(1,186		)	(10,690		)	(1,324		)	(38,956		)
Provision for credit losses	8,660			(295		)	2,973			2,627			20,186			1,186			35,337
Other	(2,244		)	—			—			(340		)	(4,004		)	—			(6,588		)
Balance, end of period	$	70,329		$	30,006		$	18,177		$	11,121		$	23,722		$	607		$	153,962
At or For the Nine Months Ended September 30, 2014:
Balance, beginning of period	$	176,030		$	37,467		$	18,733		$	8,592		$	10,623		$	785		$	252,230
Charge-offs	(51,639		)	(5,628		)	(5,760		)	(898		)	(7,682		)	(6,343		)	(77,950		)
Recoveries	5,319			785			2,845			661			1,109			4,523			15,242
Net (charge-offs) recoveries	(46,320		)	(4,843		)	(2,915		)	(237		)	(6,573		)	(1,820		)	(62,708		)
Provision for credit losses	17,821			737			1,782			1,336			16,650			1,814			40,140
Other	(2,406		)	(71		)	—			(135		)	(4,392		)	—			(7,004		)
Balance, end of period	$	145,125		$	33,290		$	17,600		$	9,556		$	16,308		$	779		$	222,658

Allowance for loan and lease losses and balances by type of allowance methodology

The following tables provide information regarding the allowance for loan and lease losses and balances by type of allowance methodology.

	At September 30, 2015
(In thousands)	Consumer Real Estate		Commercial		Leasing and Equipment Finance		Inventory  Finance		Auto  Finance		Other		Total
Allowance for loan and lease losses:
Collectively evaluated for impairment	$	45,884	$	29,497	$	16,363	$	10,910	$	21,410	$	604	$	124,668
Individually evaluated for impairment	24,445		509		1,814		211		2,312		3		29,294
Total	$	70,329	$	30,006	$	18,177	$	11,121	$	23,722	$	607	$	153,962
Loans and leases outstanding:
Collectively evaluated for impairment	$	5,393,919	$	3,035,004	$	3,861,455	$	2,151,551	$	2,419,230	$	20,656	$	16,881,815
Individually evaluated for impairment	219,795		77,321		12,076		1,834		8,098		18		319,142
Loans acquired with deteriorated credit quality	—		—		50		—		39		—		89
Total	$	5,613,714	$	3,112,325	$	3,873,581	$	2,153,385	$	2,427,367	$	20,674	$	17,201,046

	At December 31, 2014
(In thousands)	Consumer Real Estate		Commercial		Leasing and Equipment  Finance		Inventory  Finance		Auto  Finance		Other		Total
Allowance for loan and lease losses:
Collectively evaluated for impairment	$	57,167	$	27,594	$	16,310	$	9,627	$	17,046	$	741	$	128,485
Individually evaluated for impairment	28,194		3,773		2,136		393		1,184		4		35,684
Total	$	85,361	$	31,367	$	18,446	$	10,020	$	18,230	$	745	$	164,169
Loans and leases outstanding:
Collectively evaluated for impairment	$	5,462,005	$	3,038,378	$	3,731,420	$	1,874,481	$	1,911,267	$	24,055	$	16,041,606
Individually evaluated for impairment	220,359		119,287		13,763		2,609		3,676		89		359,783
Loans acquired with deteriorated credit quality	—		—		139		—		118		—		257
Total	$	5,682,364	$	3,157,665	$	3,745,322	$	1,877,090	$	1,915,061	$	24,144	$	16,401,646

Information regarding accruing and non-accruing loans and leases

The following tables set forth information regarding TCF's accruing and non-accrual loans and leases. Non-accrual loans and leases are those which management believes have a higher risk of loss. Delinquent balances are determined based on the contractual terms of the loan or lease.

	At September 30, 2015
(In thousands)	Current-59 Days Delinquent and Accruing		60-89 Days  Delinquent  and Accruing		90 Days or More Delinquent and Accruing		Total  Accruing		Non-accrual		Total
Consumer real estate:
First mortgage lien	$	2,584,735	$	8,612	$	904	$	2,594,251	$	130,343	$	2,724,594
Junior lien	2,845,205		2,316		—		2,847,521		41,599		2,889,120
Total consumer real estate	5,429,940		10,928		904		5,441,772		171,942		5,613,714
Commercial:
Commercial real estate	2,543,476		7,467		—		2,550,943		10,885		2,561,828
Commercial business	546,822		1		—		546,823		3,674		550,497
Total commercial	3,090,298		7,468		—		3,097,766		14,559		3,112,325
Leasing and equipment finance	3,855,752		6,988		288		3,863,028		10,197		3,873,225
Inventory finance	2,151,479		117		78		2,151,674		1,711		2,153,385
Auto finance	2,416,861		1,866		903		2,419,630		7,698		2,427,328
Other	20,636		25		10		20,671		3		20,674
Subtotal	16,964,966		27,392		2,183		16,994,541		206,110		17,200,651
Portfolios acquired with deteriorated credit quality	391		—		4		395		—		395
Total	$	16,965,357	$	27,392	$	2,187	$	16,994,936	$	206,110	$	17,201,046

	At December 31, 2014
(In thousands)	Current-59 Days Delinquent and Accruing		60-89 Days  Delinquent  and Accruing		90 Days or More Delinquent and Accruing		Total  Accruing		Non-accrual		Total
Consumer real estate:
First mortgage lien	$	2,987,992	$	13,176	$	194	$	3,001,362	$	137,790	$	3,139,152
Junior lien	2,505,640		2,091		—		2,507,731		35,481		2,543,212
Total consumer real estate	5,493,632		15,267		194		5,509,093		173,271		5,682,364
Commercial:
Commercial real estate	2,599,701		—		—		2,599,701		24,554		2,624,255
Commercial business	532,929		—		—		532,929		481		533,410
Total commercial	3,132,630		—		—		3,132,630		25,035		3,157,665
Leasing and equipment finance	3,728,115		2,242		307		3,730,664		12,670		3,743,334
Inventory finance	1,874,933		49		26		1,875,008		2,082		1,877,090
Auto finance	1,907,005		2,785		1,478		1,911,268		3,676		1,914,944
Other	24,144		—		—		24,144		—		24,144
Subtotal	16,160,459		20,343		2,005		16,182,807		216,734		16,399,541
Portfolios acquired with deteriorated credit quality	2,017		83		5		2,105		—		2,105
Total	$	16,162,476	$	20,426	$	2,010	$	16,184,912	$	216,734	$	16,401,646

Interest income recognized on loans and leases in non-accrual status and contractual interest

The following table provides interest income recognized on loans and leases in non-accrual status and contractual interest that would have been recorded had the loans and leases performed in accordance with their original contractual terms.

	Three Months Ended   September 30,				Nine Months Ended   September 30,
(In thousands)	2015		2014		2015		2014
Contractual interest due on non-accrual loans and leases	$	5,428	$	6,720	$	15,992	$	20,259
Interest income recognized on non-accrual loans and leases	1,021		2,531		3,319		6,411
Unrecognized interest income	$	4,407	$	4,189	$	12,673	$	13,848

Summary of consumer real estate loans to customers in bankruptcy

The following table provides information regarding consumer real estate loans to customers currently involved in ongoing Chapter 7 or Chapter 13 bankruptcy proceedings which have not yet been discharged or completed. 

(In thousands)	At September 30, 2015		At December 31, 2014
Consumer real estate loans to customers in bankruptcy:
0-59 days delinquent and accruing	$	28,029	$	47,731
60+ days delinquent and accruing	—		247
Non-accrual	19,243		12,284
Total consumer real estate loans to customers in bankruptcy	$	47,272	$	60,262

Schedule of accruing loans that were restructured within 12 months and defaulted

The table below summarizes TDR loans that defaulted during the three and nine months ended September 30, 2015 and 2014, which were modified during the respective reporting period or within one year of the beginning of the respective reporting period. TCF considers a loan to have defaulted when it becomes 90 or more days delinquent under the modified terms, has been transferred to non-accrual status subsequent to the modification or has been transferred to other real estate owned or repossessed and returned assets.

	Three Months Ended September 30,						Nine Months Ended September 30,
(Dollars in thousands)	2015			2014			2015			2014
Loan balance:(1)
Consumer real estate:
First mortgage lien	$	158		$	703		$	1,456		$	3,068
Junior lien	248			203			799			1,338
Total consumer real estate	406			906			2,255			4,406
Commercial:
Commercial real estate	—			—			—			3,814
Commercial business	—			127			—			127
Total commercial	—			127			—			3,941
Auto finance	282			113			676			237
Defaulted TDR loans modified during the applicable period	$	688		$	1,146		$	2,931		$	8,584
Total TDR loans modified in the applicable period	$	52,622		$	115,533		$	82,135		$	174,433
Defaulted modified TDR loans as a percent of total TDR loans modified in the applicable period	1.3		%	1.0		%	3.6		%	4.9		%

(1) The loan balances presented are not materially different than the pre-modification loan balances as TCF's loan modifications generally do not forgive principal amounts.

Impaired loans included in previous amounts disclosed within performing and non-accrual loans and leases and loan modifications for borrowers with financial difficulties

The following table summarizes impaired loans.

	At September 30, 2015						At December 31, 2014
(In thousands)	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded
Impaired loans with an allowance recorded:
Consumer real estate:
First mortgage lien	$	148,772	$	125,063	$	17,886	$	114,526	$	101,668	$	18,140
Junior lien	71,218		59,370		6,493		65,413		55,405		9,427
Total consumer real estate	219,990		184,433		24,379		179,939		157,073		27,567
Commercial:
Commercial real estate	17,881		17,874		506		58,157		54,412		3,772
Commercial business	16		16		3		18		18		1
Total commercial	17,897		17,890		509		58,175		54,430		3,773
Leasing and equipment finance	5,990		5,990		751		8,257		8,257		1,457
Inventory finance	1,293		1,299		211		1,754		1,758		393
Auto finance	6,426		6,185		2,235		3,074		2,928		1,184
Other	19		18		3		92		89		4
Total impaired loans with an allowance recorded	251,615		215,815		28,088		251,291		224,535		34,378
Impaired loans without an allowance recorded:
Consumer real estate:
First mortgage lien	9,802		5,698		—		53,606		35,147		—
Junior lien	26,586		551		—		33,796		7,398		—
Total consumer real estate	36,388		6,249		—		87,402		42,545		—
Commercial:
Commercial real estate	41,452		33,475		—		57,809		50,500		—
Commercial business	3,746		3,673		—		482		480		—
Total commercial	45,198		37,148		—		58,291		50,980		—
Inventory finance	533		535		—		848		851		—
Auto finance	1,929		1,070		—		1,484		748		—
Total impaired loans without an allowance recorded	84,048		45,002		—		148,025		95,124		—
Total impaired loans	$	335,663	$	260,817	$	28,088	$	399,316	$	319,659	$	34,378

Average balance of impaired loans and interest income recognized on impaired loans

The average loan balance of impaired loans and interest income recognized on impaired loans during the three and nine months ended September 30, 2015 and 2014 are included within the table below.

	Three Months Ended								Nine Months Ended
	September 30, 2015				September 30, 2014				September 30, 2015				September 30, 2014
(In thousands)	Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized		Average Loan Balance		Interest Income Recognized
Impaired loans with an allowance recorded:
Consumer real estate:
First mortgage lien	$	126,426	$	1,513	$	491,424	$	3,537	$	113,365	$	3,971	$	494,448	$	11,169
Junior lien	60,298		906		70,131		825		57,387		2,446		69,990		2,618
Total consumer real estate	186,724		2,419		561,555		4,362		170,752		6,417		564,438		13,787
Commercial:
Commercial real estate	19,183		174		60,981		589		36,143		777		67,587		1,826
Commercial business	18		—		1,123		—		17		—		2,491		—
Total commercial	19,201		174		62,104		589		36,160		777		70,078		1,826
Leasing and equipment finance	6,084		8		7,913		2		7,123		16		7,902		54
Inventory finance	1,869		17		2,114		6		1,529		66		4,846		77
Auto finance	5,309		8		1,262		—		4,557		8		999		—
Other	17		1		89		1		53		2		93		4
Total impaired loans with an allowance recorded	219,204		2,627		635,037		4,960		220,174		7,286		648,356		15,748
Impaired loans without an allowance recorded:
Consumer real estate:
First mortgage lien	5,633		138		54,008		991		20,422		919		56,230		1,726
Junior lien	286		408		4,817		360		3,975		1,403		5,523		899
Total consumer real estate	5,919		546		58,825		1,351		24,397		2,322		61,753		2,625
Commercial:
Commercial real estate	37,109		507		63,619		690		41,988		1,674		69,944		2,128
Commercial business	2,014		—		3,657		17		2,077		5		2,947		94
Total commercial	39,123		507		67,276		707		44,065		1,679		72,891		2,222
Inventory finance	497		22		832		9		693		77		265		54
Auto finance	1,134		—		675		—		909		—		440		—
Total impaired loans without an allowance recorded	46,673		1,075		127,608		2,067		70,064		4,078		135,349		4,901
Total impaired loans	$	265,877	$	3,702	$	762,645	$	7,027	$	290,238	$	11,364	$	783,705	$	20,649

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Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2015

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Summary of components of other comprehensive income and the related tax effects

The components of other comprehensive income (loss) and the related tax effects are presented in the table below.

	Three Months Ended September 30,
	2015									2014
(In thousands)	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax
Securities available for sale:
Unrealized gains (losses) arising during the period	$	9,972		$	(3,766	)	$	6,206		$	(862	)	$	324		$	(538	)
Reclassification of net (gains) losses to net income	281			(106		)	175			254			(94		)	160
Net unrealized gains (losses)	10,253			(3,872		)	6,381			(608		)	230			(378		)
Net investment hedges:
Unrealized gains (losses) arising during the period	2,858			(1,079		)	1,779			1,849			(698		)	1,151
Foreign currency translation adjustment:(1)
Unrealized gains (losses) arising during the period	(3,049		)	—			(3,049		)	(2,066		)	—			(2,066		)
Recognized postretirement prior service cost:
Reclassification of net (gains) losses to net income	(12		)	4			(8		)	(12		)	4			(8		)
Total other comprehensive income (loss)	$	10,050		$	(4,947	)	$	5,103		$	(837	)	$	(464	)	$	(1,301	)
	Nine Months Ended September 30,
	2015									2014
(In thousands)	Before Tax			Tax Effect			Net of Tax			Before Tax			Tax Effect			Net of Tax
Securities available for sale:
Unrealized gains (losses) arising during the period	$	2,971		$	(1,122	)	$	1,849		$	19,652		$	(7,401	)	$	12,251
Reclassification of net (gains) losses to net income	871			(329		)	542			(375		)	142			(233		)
Net unrealized gains (losses)	3,842			(1,451		)	2,391			19,277			(7,259		)	12,018
Net investment hedges:
Unrealized gains (losses) arising during the period	5,772			(2,180		)	3,592			1,677			(633		)	1,044
Foreign currency translation adjustment:(1)
Unrealized gains (losses) arising during the period	(6,318		)	—			(6,318		)	(2,043		)	—			(2,043		)
Recognized postretirement prior service cost:
Reclassification of net (gains) losses to net income	(35		)	13			(22		)	(35		)	13			(22		)
Total other comprehensive income (loss)	$	3,261		$	(3,618	)	$	(357	)	$	18,876		$	(7,879	)	$	10,997

(1)  Foreign investments are deemed to be permanent in nature and therefore TCF does not provide for taxes on foreign currency translation adjustments.

Schedule of accumulated other comprehensive income

Accumulated other comprehensive income (loss) balances are presented in the table below.

(In thousands)	Securities Available for Sale			Net Investment Hedges		Foreign Currency Translation Adjustment			Recognized Postretirement Prior Service Cost			Total
At or For the Three Months Ended September 30, 2015:
Balance, beginning of period	$	(12,881	)	$	4,349	$	(8,029	)	$	191		$	(16,370	)
Other comprehensive income (loss)	6,206			1,779		(3,049		)	—			4,936
Amounts reclassified from accumulated other comprehensive income (loss)	175			—		—			(8		)	167
Net other comprehensive income (loss)	6,381			1,779		(3,049		)	(8		)	5,103
Balance, end of period	$	(6,500	)	$	6,128	$	(11,078	)	$	183		$	(11,267	)
At or For the Three Months Ended September 30, 2014:
Balance, beginning of period	$	(14,587	)	$	484	$	(1,033	)	$	221		$	(14,915	)
Other comprehensive income (loss)	(538		)	1,151		(2,066		)	—			(1,453		)
Amounts reclassified from accumulated other comprehensive income (loss)	160			—		—			(8		)	152
Net other comprehensive income (loss)	(378		)	1,151		(2,066		)	(8		)	(1,301		)
Balance, end of period	$	(14,965	)	$	1,635	$	(3,099	)	$	213		$	(16,216	)
(In thousands)	Securities Available for Sale			Net Investment Hedges		Foreign Currency Translation Adjustment			Recognized Postretirement Prior Service Cost			Total
At or For the Nine Months Ended September 30, 2015:
Balance, beginning of period	$	(8,891	)	$	2,536	$	(4,760	)	$	205		$	(10,910	)
Other comprehensive income (loss)	1,849			3,592		(6,318		)	—			(877		)
Amounts reclassified from accumulated other comprehensive income (loss)	542			—		—			(22		)	520
Net other comprehensive income (loss)	2,391			3,592		(6,318		)	(22		)	(357		)
Balance, end of period	$	(6,500	)	$	6,128	$	(11,078	)	$	183		$	(11,267	)
At or For the Nine Months Ended September 30, 2014:
Balance, beginning of period	$	(26,983	)	$	591	$	(1,056	)	$	235		$	(27,213	)
Other comprehensive income (loss)	12,251			1,044		(2,043		)	—			11,252
Amounts reclassified from accumulated other comprehensive income (loss)	(233		)	—		—			(22		)	(255		)
Net other comprehensive income (loss)	12,018			1,044		(2,043		)	(22		)	10,997
Balance, end of period	$	(14,965	)	$	1,635	$	(3,099	)	$	213		$	(16,216	)

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Fair Values Disclosures

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

Fair Value Disclosures

Fair Value Disclosures

TCF uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The Company's fair values are based on the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Securities available for sale, certain loans and leases held for sale, forward foreign exchange contracts, interest rate contracts, other contracts, interest rate lock commitments, forward loan sales commitments and assets and liabilities held in trust for deferred compensation plans are recorded at fair value on a recurring basis. From time to time we may be required to record at fair value other assets on a non-recurring basis, such as certain securities held to maturity, loans, interest-only strips, other real estate owned and repossessed and returned assets. These non-recurring fair value adjustments typically involve application of lower-of-cost-or-market accounting or write-downs of individual assets.

The following is a discussion of the fair value hierarchy and the valuation methodologies used for assets and liabilities recorded at fair value on a recurring or non-recurring basis and for estimating fair value of financial instruments not recorded at fair value.

TCF groups its assets and liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the degree and reliability of estimates and assumptions used to determine fair value as follows: Level 1, which includes valuations that are based on prices obtained from independent pricing sources for the same instruments traded in active markets; Level 2, which includes valuations that are based on prices obtained from independent pricing sources that are based on observable transactions of similar instruments, but not quoted markets; and Level 3, for which valuations are generated from Company model-based techniques that use significant unobservable inputs. Such unobservable inputs reflect estimates of assumptions that market participants would use in pricing the asset or liability.

Investments The carrying value of investments in FHLB stock and Federal Reserve Bank stock, categorized as Level 2, approximates fair value based on redemption at par value.

Securities Held to Maturity Securities held to maturity consist primarily of securities of U.S. Government sponsored enterprises and federal agencies. The fair value of securities of U.S. Government sponsored enterprises and federal agencies, categorized as Level 2, is estimated using prices obtained from independent asset pricing services that are based on observable transactions, but not quoted markets. Management reviews the prices obtained from independent asset pricing services for unusual fluctuations and comparisons to current market trading activity. The fair value of certain other securities held to maturity, categorized as Level 3, is estimated based on discounted cash flows using current market rates and consideration of credit exposure or other internal pricing methods. There is no observable secondary market for these securities.

Securities Available for Sale Securities available for sale consist primarily of securities of U.S. Government sponsored enterprises and federal agencies, and obligations of states and political subdivisions. The fair value of these securities, categorized as Level 2, is recorded using prices obtained from independent asset pricing services that are based on observable transactions, but not quoted markets. Management reviews the prices obtained from independent asset pricing services for unusual fluctuations and comparisons to current market trading activity. Other mortgage-backed securities, for which there is little or no market activity, are categorized as Level 3 assets and the fair value of these assets is determined by using internal pricing methods.

Loans and Leases Held for Sale Loans and leases held for sale are generally carried at the lower of cost or fair value. The cost of loans held for sale includes the unpaid principal balance, net of deferred loan fees and costs. Estimated fair values are based upon recent loan sale transactions and any available price quotes on loans with similar coupons, maturities and credit quality. Certain other loans and leases held for sale are recorded at fair value under the elected fair value option. TCF relies on internal valuation models which utilize quoted investor prices to estimate the fair value of these loans. Loans and leases held for sale are categorized as Level 3.

Loans The fair value of loans, categorized as Level 3, is estimated based on discounted expected cash flows and recent sales of similar loans. The discounted cash flows include assumptions for prepayment estimates over each loan's remaining life, consideration of the current interest rate environment compared with the weighted average rate of each portfolio, a credit risk component based on the historical and expected performance of each portfolio and a liquidity adjustment related to the current market environment. TCF also uses pricing data from recent sales of loans with similar risk characteristics as data points to validate the assumptions used in estimating the fair value of certain loans.

Loans for which repayment is expected to be provided solely by the value of the underlying collateral, categorized as Level 3 and recorded at fair value on a non-recurring basis, are valued based on the fair value of that collateral less estimated selling costs. Such loans include impaired loans as well as certain delinquent non-accrual consumer real estate and auto finance loans. The fair value of the collateral is determined based on internal estimates and assessments provided by third-party appraisers.

Forward Foreign Exchange Contracts TCF's forward foreign exchange contracts are currency contracts executed in over-the-counter markets and are recorded at fair value using a cash flow model that includes key inputs such as foreign exchange rates and, in accordance with GAAP, an assessment of the risk of counterparty non-performance. The risk of counterparty non-performance is based on external assessments of credit risk. The fair value of these contracts, categorized as Level 2, is based on observable transactions, but not quoted markets.

Interest Rate Contracts TCF executes interest rate swaps with commercial banking customers to facilitate the customer's risk management strategy. These interest rate swaps are simultaneously hedged by offsetting interest rate swaps TCF executes with a third party, minimizing TCF's net risk exposure resulting from such transactions. TCF also entered into an interest rate swap to convert its fixed-rate 2025 Notes to floating rate debt. These derivative instruments are recorded at fair value. The fair value of these swap agreements, categorized as Level 2, is determined using a cash flow model which considers the forward curve, the discount curve and credit valuation adjustments related to counterparty and/or borrower non-performance risk.

Other Contracts TCF entered into a swap agreement related to the sale of TCF's Visa Class B stock, categorized as Level 3. The fair value of the Visa agreement is based upon TCF's estimated exposure related to the Visa covered litigation through a probability analysis of the funding and estimated settlement amounts.

Interest Rate Lock Commitments and Forward Loan Sales Commitments TCF's interest rate lock commitments are derivative instruments which are carried at fair value. The related forward loan sales commitments to sell the resulting loans held for sale are also recorded at fair value under the elected fair value option. TCF relies on internal valuation models to estimate the fair value of these instruments. The valuation models utilize estimated rates of successful loan closings and quoted investor prices. While these models use both Level 2 and 3 inputs, TCF has determined that the majority of the inputs significant in the valuation of these commitments fall within Level 3 and therefore they are categorized as Level 3.

Interest-Only Strips The fair value of interest-only strips, categorized as Level 3, represents the present value of future cash flows retained by TCF on certain assets. TCF uses available market data, along with its own empirical data and discounted cash flow models, to arrive at the estimated fair value of its interest-only strips. The present value of the estimated expected future cash flows to be received is determined by using discount, loss and prepayment rates that TCF believes are commensurate with the risks associated with the cash flows and what a market participant would use. These assumptions are inherently subject to volatility and uncertainty and, as a result, the estimated fair value of the interest-only strips may fluctuate significantly from period to period.

Other Real Estate Owned and Repossessed and Returned Assets The fair value of other real estate owned is based on independent appraisals, real estate brokers' price opinions or automated valuation methods, less estimated selling costs. Certain properties require assumptions that are not observable in an active market in the determination of fair value. The fair value of repossessed and returned assets is based on available pricing guides, auction results or price opinions, less estimated selling costs. Assets acquired through foreclosure, repossession or returned to TCF are initially recorded at the lower of the loan or lease carrying amount or fair value less estimated selling costs at the time of transfer to other real estate owned or repossessed and returned assets. Other real estate owned and repossessed and returned assets were written down $2.9 million and $10.4 million, which was included in foreclosed real estate and repossessed assets, net expense for the three and nine months ended September 30, 2015, respectively, compared with $2.8 million and $9.0 million for the same periods in 2014.

Deposits The fair value of checking, savings and money market deposits, categorized as Level 1, is deemed equal to the amount payable on demand. The fair value of certificates of deposit, categorized as Level 2, is estimated based on discounted cash flows using currently offered market rates. The intangible value of long-term relationships with depositors is not taken into account in the fair values disclosed.

Long-term Borrowings The fair value of TCF's long-term borrowings, categorized as Level 2, is estimated based on observable market prices and discounted cash flows using interest rates for borrowings of similar remaining maturities and characteristics. The fair value of other long-term borrowings, categorized as Level 3, is based on unobservable inputs determined at the time of origination.

Assets and Liabilities Held in Trust for Deferred Compensation Plans Assets held in trust for deferred compensation plans include investments in publicly traded securities, excluding TCF common stock reported in treasury and other equity, and U.S. Treasury notes. The fair value of these assets, categorized as Level 1, is based upon prices obtained from independent asset pricing services based on active markets. The fair value of the liabilities equals the fair value of the assets.

Financial Instruments with Off-Balance Sheet Risk The fair value of TCF's commitments to extend credit and standby letters of credit, categorized as Level 2, is estimated using fees currently charged to enter into similar agreements. Substantially all commitments to extend credit and standby letters of credit have floating interest rates and do not expose TCF to interest rate risk; therefore fair value is approximately equal to carrying value.

The following tables present the balances of assets and liabilities measured at fair value on a recurring and non-recurring basis.

	Fair Value Measurements at September 30, 2015
(In thousands)	Level 1		Level 2		Level 3		Total
Recurring Fair Value Measurements:
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	618,230	$	—	$	618,230
Other	—		—		38		38
Obligations of states and political subdivisions	—		164,727		—		164,727
Loans and leases held for sale	—		—		5,805		5,805
Forward foreign exchange contracts(1)	—		2,833		—		2,833
Interest rate contracts(1)	—		4,539		—		4,539
Interest rate lock commitments(1)	—		—		643		643
Forward loan sales commitments	—		—		26		26
Assets held in trust for deferred compensation plans	18,635		—		—		18,635
Total assets	$	18,635	$	790,329	$	6,512	$	815,476
Forward foreign exchange contracts(1)	$	—	$	348	$	—	$	348
Interest rate contracts(1)	—		2,624		—		2,624
Forward loan sales commitments	—		—		44		44
Liabilities held in trust for deferred compensation plans	18,635		—		—		18,635
Other contracts(1)	—		—		386		386
Total liabilities	$	18,635	$	2,972	$	430	$	22,037
Non-recurring Fair Value Measurements:
Securities held to maturity	$	—	$	—	$	1,177	$	1,177
Loans	—		—		140,535		140,535
Interest-only strips	—		—		7,578		7,578
Other real estate owned:
Consumer	—		—		40,139		40,139
Commercial	—		—		3,586		3,586
Repossessed and returned assets	—		3,431		1,458		4,889
Total non-recurring fair value measurements	$	—	$	3,431	$	194,473	$	197,904

(1) As permitted under GAAP, TCF has elected to net derivative receivables and derivative payables when a legally enforceable master netting agreement exists as well as the related cash collateral received and paid. For purposes of this table, the derivative receivable and derivative payable balances are presented gross of this netting adjustment.

	Fair Value Measurements at December 31, 2014
(In thousands)	Level 1		Level 2		Level 3		Total
Recurring Fair Value Measurements:
Securities available for sale:
Mortgage-backed securities:
U.S. Government sponsored enterprises and federal agencies	$	—	$	463,239	$	—	$	463,239
Other	—		—		55		55
Loans and leases held for sale	—		—		3,308		3,308
Forward foreign exchange contracts(1)	—		3,211		—		3,211
Interest rate contracts(1)	—		1,798		—		1,798
Interest rate lock commitments(1)	—		—		285		285
Forward loan sales commitments	—		—		19		19
Assets held in trust for deferred compensation plans	18,703		—		—		18,703
Total assets	$	18,703	$	468,248	$	3,667	$	490,618
Forward foreign exchange contracts(1)	$	—	$	177	$	—	$	177
Interest rate contracts(1)	—		1,877		—		1,877
Forward loan sales commitments	—		—		42		42
Liabilities held in trust for deferred compensation plans	18,703		—		—		18,703
Other contracts(1)	—		—		621		621
Total liabilities	$	18,703	$	2,054	$	663	$	21,420
Non-recurring Fair Value Measurements:
Securities held to maturity	$	—	$	—	$	1,516	$	1,516
Loans	—		—		164,897		164,897
Interest-only strips	—		—		41,204		41,204
Other real estate owned:
Consumer	—		—		40,502		40,502
Commercial	—		4,839		8,866		13,705
Repossessed and returned assets	—		1,563		1,425		2,988
Total non-recurring fair value measurements	$	—	$	6,402	$	258,410	$	264,812

(1) As permitted under GAAP, TCF has elected to net derivative receivables and derivative payables when a legally enforceable master netting agreement exists as well as the related cash collateral received and paid. For purposes of this table, the derivative receivable and derivative payable balances are presented gross of this netting adjustment.

Management assesses the appropriate classification of financial assets and liabilities within the fair value hierarchy by monitoring the level of availability of observable market information. Changes in markets or economic conditions, as well as changes to Company valuation models may require the transfer of financial instruments from one fair value level to another. Such transfers, if any, are recorded at the fair values as of the beginning of the quarter in which the transfer occurred. TCF had no transfers in the nine months ended September 30, 2015 and 2014.

The following table presents changes in Level 3 assets and liabilities measured at fair value on a recurring basis.

(In thousands)	Securities Available for Sale			Loans and Leases Held for Sale			Interest Rate Lock Commitments		Forward Loan Sales Commitments			Other Contracts
At or For the Three Months Ended September 30, 2015:
Asset (liability) balance, beginning of period	$	45		$	4,962		$	455	$	(5	)	$	(465	)
Total net gains (losses) included in:
Net income	—			18			188		(13		)	—
Sales	—			(76,677		)	—		—			—
Originations	—			77,502			—		—			—
Principal paydowns / settlements	(7		)	—			—		—			79
Asset (liability) balance, end of period	$	38		$	5,805		$	643	$	(18	)	$	(386	)
At or For the Three Months Ended September 30, 2014:
Asset (liability) balance, beginning of period	$	81		$	—		$	—	$	—		$	(737	)
Total net gains (losses) included in:
Net income	344			—			—		—			(15		)
Principal paydowns / settlements	(17		)	—			—		—			83
Asset (liability) balance, end of period	$	408		$	—		$	—	$	—		$	(669	)

(In thousands)	Securities Available for Sale			Loans and Leases Held for Sale			Interest Rate Lock Commitments		Forward Loan Sales Commitments			Other Contracts
At or For the Nine Months Ended September 30, 2015:
Asset (liability) balance, beginning of period	$	55		$	3,308		$	285	$	(23	)	$	(621	)
Total net gains (losses) included in:
Net income	—			50			358		5			—
Sales	—			(212,940		)	—		—			—
Originations	—			215,387			—		—			—
Principal paydowns / settlements	(17		)	—			—		—			235
Asset (liability) balance, end of period	$	38		$	5,805		$	643	$	(18	)	$	(386	)
At or For the Nine Months Ended September 30, 2014:
Asset (liability) balance, beginning of period	$	93		$	—		$	—	$	—		$	(899	)
Total net gains (losses) included in:
Net income	344			—			—		—			(15		)
Principal paydowns / settlements	(29		)	—			—		—			245
Asset (liability) balance, end of period	$	408		$	—		$	—	$	—		$	(669	)

Fair Value Option

In the third quarter of 2014, TCF initiated a correspondent lending program in which TCF Bank originates consumer mortgage loans and sells them to a wholesale partner. TCF elected the fair value option for these loans. This election facilitates the offsetting of changes in fair values of the loans held for sale and the derivative financial instruments used to economically hedge them. The following table presents the difference between the aggregate fair value and aggregate unpaid principal balance of these loans held for sale.

(In thousands)	At September 30, 2015		At December 31, 2014
Fair value carrying amount	$	5,805	$	3,308
Aggregate unpaid principal amount	5,641		3,205
Fair value carrying amount less aggregate unpaid principal	$	164	$	103

Differences between the fair value carrying amount and the aggregate unpaid principal balance include changes in fair value recorded at and subsequent to funding and gains and losses on the related loan commitment prior to funding. No loans recorded under the fair value option were delinquent or on non-accrual status at September 30, 2015 or December 31, 2014. The net gain from initial measurement of the correspondent lending loans held for sale, any subsequent changes in fair value while the loans are outstanding and any actual adjustment to the gains realized upon sales of the loans totaled $4.7 million for the nine months ended September 30, 2015, and is included in gains on sales of consumer real estate loans, net. This amount excludes the impact from the interest rate lock commitments and forward loan sales commitments which are also included in gains on sales of consumer real estate loans, net.

Disclosures About Fair Value of Financial Instruments

Management discloses the estimated fair value of financial instruments, both assets and liabilities on and off the balance sheet, for which it is practicable to estimate fair value. These fair value estimates were made at September 30, 2015 and December 31, 2014, based on relevant market information and information about the financial instruments. Fair value estimates are intended to represent the price at which an asset could be sold or a liability could be settled. However, given there is no active market or observable market transactions for many of the Company's financial instruments, the estimates of fair values are subjective in nature, involve uncertainties and include matters of significant judgment. Changes in assumptions could significantly affect the estimated values.

The following tables present the carrying amounts and estimated fair values of the Company's financial instruments, excluding short-term financial assets and liabilities as their carrying amounts approximate fair value and excluding financial instruments recorded at fair value on a recurring basis. This information represents only a portion of TCF's balance sheet and not the estimated value of the Company as a whole. Non-financial instruments such as the intangible value of TCF's branches and core deposits, leasing operations, goodwill, premises and equipment and the future revenues from TCF's customers are not reflected in this disclosure. Therefore, this information is of limited use in assessing the value of TCF.

	Carrying Amount			Estimated Fair Value at September 30, 2015
(In thousands)				Level 1		Level 2			Level 3		Total
Financial instrument assets:
Investments	$	76,543		$	—	$	76,543		$	—	$	76,543
Securities held to maturity	204,129			—		207,432			4,577		212,009
Loans and leases held for sale	116,155			—		—			123,926		123,926
Loans:
Consumer real estate	5,613,714			—		—			5,728,048		5,728,048
Commercial real estate	2,561,828			—		—			2,507,532		2,507,532
Commercial business	550,497			—		—			528,109		528,109
Equipment finance	1,858,265			—		—			1,847,767		1,847,767
Inventory finance	2,153,385			—		—			2,139,272		2,139,272
Auto finance	2,427,367			—		—			2,442,324		2,442,324
Other	20,674			—		—			16,619		16,619
Allowance for loan losses(1)	(153,962		)	—		—			—		—
Interest-only strips(2)	50,699			—		—			54,066		54,066
Total financial instrument assets	$	15,479,294		$	—	$	283,975		$	15,392,240	$	15,676,215
Financial instrument liabilities:
Deposits	$	16,058,433		$	12,446,180	$	3,631,649		$	—	$	16,077,829
Long-term borrowings	1,184,166			—		1,187,433			5,409		1,192,842
Total financial instrument liabilities	$	17,242,599		$	12,446,180	$	4,819,082		$	5,409	$	17,270,671
Financial instruments with off-balance sheet risk:(3)
Commitments to extend credit	$	24,582		$	—	$	24,582		$	—	$	24,582
Standby letters of credit	(32		)	—		(32		)	—		(32		)
Total financial instruments with off-balance sheet risk	$	24,550		$	—	$	24,550		$	—	$	24,550

(1) Expected credit losses are included in the estimated fair values.

(2) Carrying amounts are included in other assets.

(3) Positive amounts represent assets, negative amounts represent liabilities.

	Carrying Amount			Estimated Fair Value at December 31, 2014
(In thousands)				Level 1		Level 2			Level 3		Total
Financial instrument assets:
Investments	$	85,492		$	—	$	85,492		$	—	$	85,492
Securities held to maturity	214,454			—		217,418			4,916		222,334
Loans and leases held for sale	132,266			—		—			139,370		139,370
Loans:
Consumer real estate	5,682,364			—		—			5,836,770		5,836,770
Commercial real estate	2,624,255			—		—			2,575,625		2,575,625
Commercial business	533,410			—		—			512,083		512,083
Equipment finance	1,806,808			—		—			1,787,271		1,787,271
Inventory finance	1,877,090			—		—			1,864,786		1,864,786
Auto finance	1,915,061			—		—			1,927,384		1,927,384
Other	24,144			—		—			18,724		18,724
Allowance for loan losses(1)	(164,169		)	—		—			—		—
Interest-only strips(2)	69,789			—		—			73,058		73,058
Total financial instrument assets	$	14,800,964		$	—	$	302,910		$	14,739,987	$	15,042,897
Financial instrument liabilities:
Deposits	$	15,449,882		$	12,400,693	$	3,063,850		$	—	$	15,464,543
Long-term borrowings	1,232,065			—		1,246,221			8,054		1,254,275
Total financial instrument liabilities	$	16,681,947		$	12,400,693	$	4,310,071		$	8,054	$	16,718,818
Financial instruments with off-balance sheet risk:(3)
Commitments to extend credit	$	25,885		$	—	$	25,885		$	—	$	25,885
Standby letters of credit	(47		)	—		(47		)	—		(47		)
Total financial instruments with off-balance sheet risk	$	25,838		$	—	$	25,838		$	—	$	25,838

(1) Expected credit losses are included in the estimated fair values.

(2) Carrying amounts are included in other assets.

(3) Positive amounts represent assets, negative amounts represent liabilities.