Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

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

Schedule Of Income Taxes (Benefit)

(In thousands)	2016			2015			2014
Federal:
Current	$	217,400		$	158,164		$	178,450
Deferred	(4,108		)	(31,843		)	14,277
	213,292			126,321			192,727
State:
Current	26,900			14,027			18,573
Deferred	(4,334		)	2,040			11,661
	22,566			16,067			30,234
	$	235,858		$	142,388		$	222,961

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

(In thousands)	2016			2015			2014
Income tax expense at statutory federal rate	$	246,718		$	158,151		$	217,498
State income taxes including credits, net	14,668			10,443			19,652
Other nondeductible expenses	3,149			3,205			2,949
Nontaxable income	(24,688		)	(20,397		)	(17,869		)
Tax credits and other taxes	(1,704		)	(2,926		)	(1,717		)
Other	(2,285		)	(6,088		)	2,448
	$	235,858		$	142,388		$	222,961

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

(In thousands)	December 31,
	2016			2015
Gross deferred tax assets:
Book loan loss deduction in excess of tax	$	240,881		$	254,223
Pension and postretirement	19,332			24,749
Deferred compensation	87,420			91,665
Security investments and derivative fair value adjustments	56,628			11,254
Net operating losses, capital losses and tax credits	4,664			4,659
FDIC-supported transactions	5,086			9,157
Other	46,052			46,016
	460,063			441,723
Valuation allowance	(4,127		)	(4,261		)
Total deferred tax assets	455,936			437,462
Gross deferred tax liabilities:
Core deposits and purchase accounting	(1,140		)	(3,392		)
Premises and equipment, due to differences in depreciation	(7,548		)	(10,588		)
Federal Home Loan Bank stock dividends	(3,800		)	(10,042		)
Leasing operations	(75,109		)	(85,255		)
Prepaid expenses	(6,534		)	(9,001		)
Prepaid pension reserves	(17,659		)	(18,087		)
Mortgage servicing	(9,844		)	(6,845		)
Subordinated debt modification	(30,762		)	(46,451		)
Deferred loan fees	(25,425		)	(23,723		)
Equity investments	(27,651		)	(21,037		)
Total deferred tax liabilities	(205,472		)	(234,421		)
Net deferred tax assets	$	250,464		$	203,041

Schedule Of Reconciliation Of Gross Unrecognized Tax Benefits

(In thousands)	2016			2015		2014
Balance at beginning of year	$	5,448		$	3,255	$	2,385
Tax positions related to current year:
Additions	1,554			786		—
Reductions	—			—		—
Tax positions related to prior years:
Additions	542			1,407		870
Reductions	—			—		—
Settlements with taxing authorities	—			—		—
Lapses in statutes of limitations	(3,255		)	—		—
Balance at end of year	$	4,289		$	5,448	$	3,255