Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Components of Provision for Income Taxes

Applicable income taxes in the Consolidated Statements of Income were as follows:

(In thousands)	Current		Deferred			Total
Year Ended December 31, 2018:
Federal	$	9,424	$	54,858		$	64,282
State	13,251		3,722			16,973
Foreign	4,435		406			4,841
Total	$	27,110	$	58,986		$	86,096
Year Ended December 31, 2017:
Federal	$	14,384	$	(62,913	)	$	(48,529	)
State	237		9,340			9,577
Foreign	5,484		(156		)	5,328
Total	$	20,105	$	(53,729	)	$	(33,624	)
Year Ended December 31, 2016:
Federal	$	66,810	$	28,629		$	95,439
State	11,402		4,425			15,827
Foreign	5,350		(88		)	5,262
Total	$	83,562	$	32,966		$	116,528

Schedule of Reconciliation of the Effective Income Tax Rate from the Statutory Federal Income Tax Rate

Reconciliations to TCF's effective income tax rates from the statutory federal income tax rates were as follows:

	Year Ended December 31,
	2018		2017		2016
Federal income tax rate	21.00	%	35.00	%	35.00	%
Increase (decrease) resulting from:
State income tax, net of federal tax	3.34		3.92		3.04
Tax-exempt income	(1.64	)	(3.86	)	(2.07	)
Stock compensation	(0.64	)	(1.15	)	—
Non-controlling interest tax effect	(0.59	)	(1.45	)	(0.99	)
Investments in affordable housing limited liability entities	(0.34	)	(0.89	)	(0.24	)
Foreign tax effects	0.26		(0.67	)	(0.50	)
Tax Reform effects, net	(0.26	)	(53.29	)	—
Nondeductible goodwill impairment effect	—		10.43		—
State tax settlements, net of federal tax	—		(1.38	)	0.19
Other, net	0.30		(0.38	)	0.02
Effective income tax rate	21.43	%	(13.72	)%	34.45	%

Schedule of Reconciliation of the Changes in Unrecognized Tax Benefits

Reconciliations of the changes in unrecognized tax benefits were as follows:

	At or For the Year Ended December 31,
(In thousands)	2018			2017			2016
Balance, beginning of period	$	4,645		$	4,690		$	4,249
Increases for tax positions related to the current year	903			200			546
Increases for tax positions related to prior years	1,438			86			627
Decreases for tax positions related to prior years	(970		)	(331		)	(84		)
Settlements with taxing authorities	—			—			(525		)
Decreases related to lapses of applicable statutes of limitation	(144		)	—			(123		)
Balance, end of period	$	5,872		$	4,645		$	4,690

Schedule of Deferred Tax Assets and Deferred Tax Liabilities

TCF's deferred tax assets and deferred tax liabilities were as follows:

	At December 31,
(In thousands)	2018			2017
Deferred tax assets:
Allowance for loan and lease losses	$	33,546		$	41,339
Stock compensation and deferred compensation plans	32,686			21,150
Net operating losses and other carryforwards	20,591			16,452
Debt securities available for sale	9,235			5,345
Accrued expense	2,524			2,507
Other	1,900			3,603
Deferred tax assets	100,482			90,396
Valuation allowance	(14,291		)	(14,267		)
Total deferred tax assets, net of valuation allowance	86,191			76,129
Deferred tax liabilities:
Lease financing	297,603			246,221
Premises and equipment	40,130			30,109
Loan fees and discounts	17,465			12,489
Prepaid expenses	7,921			8,047
Goodwill and other intangibles	2,290			2,475
Other	7,319			4,715
Total deferred tax liabilities	372,728			304,056
Net deferred tax liabilities	$	286,537		$	227,927