Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Selected segment information

Information about the Corporation’s segments is presented below.

Segment Income Statement Data
($ in Thousands)	Corporate and Commercial Specialty			Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
2015
Net interest income	$	310,072		$	349,134		$	17,072		$	676,278
Noninterest income	46,742			265,638			16,029			328,409
Total revenue	356,814			614,772			33,101			1,004,687
Credit provision*	41,913			25,614			(30,027		)	37,500
Noninterest expense	141,912			492,419			63,068			697,399
Income before income taxes	172,989			96,739			60			269,788
Income tax expense (benefit)	59,200			33,859			(11,572		)	81,487
Net income	$	113,789		$	62,880		$	11,632		$	188,301
Return on average allocated capital (ROCET1)**	11.6		%	9.8		%	2.1		%	9.9		%
2014
Net interest income	$	296,717		$	310,444		$	73,806		$	680,967
Noninterest income	49,213			221,379			19,727			290,319
Total revenue	345,930			531,823			93,533			971,286
Credit provision*	46,857			23,934			(54,791		)	16,000
Noninterest expense	148,476			463,184			67,581			679,241
Income before income taxes	150,597			44,705			80,743			276,045
Income tax expense	50,039			15,647			19,850			85,536
Net income	$	100,558		$	29,058		$	60,893		$	190,509
Return on average allocated capital (ROCET1)**	11.1		%	5.1		%	13.9		%	9.9		%
2013
Net interest income	$	321,346		$	317,898		$	6,299		$	645,543
Noninterest income	48,417			247,667			17,015			313,099
Total revenue	369,763			565,565			23,314			958,642
Credit provision*	55,297			20,122			(65,319		)	10,100
Noninterest expense	140,744			477,318			62,587			680,649
Income before income taxes	173,722			68,125			26,046			267,893
Income tax expense (benefit)	60,802			23,843			(5,444		)	79,201
Net income	$	112,920		$	44,282		$	31,490		$	188,692
Return on average allocated capital (ROCET1)**	12.5		%	7.8		%	6.5		%	9.8		%

Segment Balance Sheet Data
($ in Thousands)	Corporate and Commercial Specialty		Community, Consumer, and Business		Risk Management and Shared Services		Consolidated Total
2015
Average earning assets	$	9,383,971	$	8,810,015	$	6,377,101	$	24,571,087
Average loans	9,374,191		8,809,673		68,400		18,252,264
Average deposits	5,856,530		10,898,602		3,147,955		19,903,087
Average allocated capital (CET1)**	$	977,406	$	640,181	$	216,010	$	1,833,597
2014
Average earning assets	$	8,927,401	$	7,840,352	$	5,992,375	$	22,760,128
Average loans	8,915,498		7,840,352		83,144		16,838,994
Average deposits	5,148,195		10,061,495		2,437,394		17,647,084
Average allocated capital (CET1)**	$	903,500	$	564,303	$	402,806	$	1,870,609
2013
Average earning assets	$	8,443,203	$	7,225,943	$	5,310,982	$	20,980,128
Average loans	8,433,389		7,225,943		3,813		15,663,145
Average deposits	5,479,567		9,675,302		2,283,326		17,438,195
Average allocated capital (CET1)**	$	900,306	$	570,634	$	407,431	$	1,878,371
* The consolidated credit provision is equal to the actual reported provision for credit losses.
** The Federal Reserve establishes capital adequacy requirements for the Corporation, including Tier 1 capital. Tier 1 capital is comprised of common capital and certain redeemable, non-cumulative preferred stock. Average allocated capital represents average common equity Tier 1 which is defined as average Tier 1 capital excluding qualifying perpetual preferred stock and qualifying trust preferred securities. This is a non-GAAP financial measure. For segment reporting purposes, the ROCET1 reflects return on average allocated common equity Tier 1 (“CET1”). The ROCET1 for the Risk Management and Shared Services segment and the Consolidated Total is inclusive of the annualized effect of the preferred stock dividends.