Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]

Schedule Of Income Taxes (Benefit)

(In millions)	2018			2017		2016
Federal:
Current	$	210		$	166	$	217
Deferred	(1		)	146		(4		)
Total Federal	209			312		213
State:
Current	49			24		27
Deferred	1			8		(4		)
Total State	50			32		23
Total	$	259		$	344	$	236

Schedule Of Statutory Federal Income Tax Rate Reconciles To Actual Income Tax Expense (Benefit)

(In millions)	2018			2017			2016
Income tax expense at statutory federal rate	$	240		$	327		$	247
State income taxes including credits, net	40			21			15
Other nondeductible expenses	15			3			3
Nontaxable income	(24		)	(33		)	(25		)
Share-based compensation	(7		)	(8		)	—
Tax credits and other taxes	—			1			(2		)
Tax Cuts and Jobs Act of 2017	(2		)	47			—
Other	(3		)	(14		)	(2		)
Total	$	259		$	344		$	236

Schedule Of Tax Effects Of Deferred Tax Assets And Deferred Tax Liabilities

(In millions)	December 31,
	2018			2017
Gross deferred tax assets:
Book loan loss deduction in excess of tax	$	137		$	143
Pension and postretirement	7			8
Deferred compensation	70			48
Security investments and derivative fair value adjustments	78			40
Net operating losses, capital losses and tax credits	2			2
FDIC-supported transactions	—			2
Other	31			34
	325			277
Valuation allowance	—			(2		)
Total deferred tax assets	325			275
Gross deferred tax liabilities:
Premises and equipment, due to differences in depreciation	(61		)	(51		)
Federal Home Loan Bank stock dividends	(2		)	(3		)
Leasing operations	(54		)	(52		)
Prepaid expenses	(6		)	(5		)
Prepaid pension reserves	(12		)	(11		)
Mortgage servicing	(8		)	(7		)
Subordinated debt modification	—			(9		)
Deferred loan fees	(27		)	(23		)
Equity investments	(25		)	(21		)
Total deferred tax liabilities	(195		)	(182		)
Net deferred tax assets	$	130		$	93

Schedule Of Reconciliation Of Gross Unrecognized Tax Benefits

(In millions)	2018		2017		2016
Balance at beginning of year	$	6	$	4	$	5
Tax positions related to current year:
Additions	1		1		1
Reductions	—		—		—
Tax positions related to prior years:
Additions	1		1		1
Reductions	—		—		—
Settlements with taxing authorities	—		—		—
Lapses in statutes of limitations	—		—		(3		)
Balance at end of year	$	8	$	6	$	4