Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Interest income:
Interest and fees on loans	$ 415,755	$ 434,350
Interest on money market investments	5,218	5,130
Interest on Securities	27,473	28,094
Interest expense:
Interest on deposits	12,104	12,779
Interest on short- and long-term borrowings	18,996	38,324
Total interest expense	31,100	51,103
Net interest income	417,346	416,471
Provision for loan losses	(1,494)	(610)
Net interest income after provision for loan losses	418,840	417,081
Noninterest income:
Service charges and fees on deposit accounts	41,194	41,199
Other service charges, commissions and fees	47,486	44,250
Wealth management income	7,615	7,077
Gain Loss On Sales Of Loans And Servicing Income	7,706	7,096
Capital markets and foreign exchange	5,501	5,043
Dividends and other investment income	9,372	7,864
Fair value and nonhedge derivative income (loss)	(1,088)	(8,539)
Equity securities gains, net	3,353	912
Fixed income securities gains (losses), net	(239)	30,914
Impairment losses on investment securities:
Impairment losses on investment securities	0	(27)
Non-credit losses on secutities not expectd to be sold (recognized in other comprehensive income)	0	0
Net impairment losses on investment securities	0	(27)
Other	922	2,524
Total noninterest income	121,822	138,313
Noninterest expense:
Salaries and employee benefits	243,519	233,402
Occupancy, net	29,339	28,305
Furniture, equipment and software	29,713	27,944
Other real estate expense	374	1,607
Credit-related expense	5,939	6,947
Provision for unfunded lending commitments	1,211	(1,012)
Professional and legal services	11,483	10,995
Advertising	6,975	6,398
FDIC premiums	8,119	7,922
Amortization of core deposit and other intangibles	2,358	2,882
Other	58,431	72,673
Total noninterest expense	397,461	398,063
Income before income taxes	143,201	157,331
Income taxes	51,176	56,121
Net income	92,025	101,210
Preferred stock dividends	(16,746)	(25,020)
Net earnings applicable to common shareholders	75,279	76,190
Weighted average common shares outstanding during the period:
Basic shares	202,603	184,440
Diluted shares	202,944	185,123
Net earnings per common share:
Basic	$ 0.37	$ 0.41
Diluted	$ 0.37	$ 0.41
Interest and Dividend Income, Operating	$ 448,446	$ 467,574