Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Interest income:
Interest and fees on loans	$ 420,508	$ 415,755
Interest on money market investments	7,029	5,218
Interest on Securities	47,364	27,473
Interest on securities:
Interest and Dividend Income, Operating	474,901	448,446
Interest expense:
Interest on deposits	11,845	12,104
Interest on short- and long-term borrowings	10,214	18,996
Total interest expense	22,059	31,100
Net interest income	452,842	417,346
Provision for loan losses	42,145	(1,494)
Net interest income after provision for loan losses	410,697	418,840
Noninterest income:
Service charges and fees on deposit accounts	41,261	41,194
Other service charges, commissions and fees	49,474	43,002
Wealth management income	7,954	7,615
Loan sales and servicing income	7,979	7,706
Capital markets and foreign exchange	5,667	5,501
Dividends and other investment income	4,639	9,372
Fair value and nonhedge derivative income (loss)	(2,585)	(1,088)
Equity securities gains (losses), net	(550)	3,353
Fixed income securities gains (losses), net	28	(239)
Other	2,894	922
Total noninterest income	116,761	117,338
Noninterest expense:
Salaries and employee benefits	258,338	243,519
Occupancy, net	29,779	29,339
Furniture, equipment and software	32,015	29,713
Other real estate expense, net	(1,329)	374
Credit-related expense	5,934	5,939
Provision for Unfunded Lending Commitments	5,812	(1,211)
Professional and legal services	11,471	11,483
Advertising	5,628	6,975
FDIC premiums	7,154	8,119
Amortization of core deposit and other intangibles	2,014	2,358
Debt extinguishment cost	247	0
Other	50,134	53,947
Total noninterest expense	395,573	392,977
Income before income taxes	131,885	143,201
Income taxes	41,448	51,176
Net income	90,437	92,025
Dividends on preferred stock	(11,660)	(16,746)
Net earnings applicable to common shareholders	$ 78,777	$ 75,279
Weighted average common shares outstanding during the period:
Basic shares	203,967	202,603
Diluted shares	204,096	202,944
Net earnings per common share:
Basic	$ 0.38	$ 0.37
Diluted	$ 0.38	$ 0.37