Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Document Fiscal Year Focus	2014
Interest income:
Interest and fees on loans	$ 434,344	$ 453,433
Interest on money market investments	5,130	5,439
Investment Income, Interest	28,094	25,876
Interest expense:
Interest on deposits	12,779	15,642
Interest Expense, Debt	38,324	50,991
Total interest expense	51,103	66,633
Net interest income	416,465	418,115
Provision for loan losses	(610)	(29,035)
Net interest income after provision for loan losses	417,075	447,150
Noninterest income:
Service charges and fees on deposit accounts	42,594	43,580
Other service charges, commissions and fees	43,519	42,731
Trust and wealth management income	7,077	6,994
Capital markets and foreign exchange	5,000	7,486
Dividends and other investment income	7,864	12,724
Loan sales and servicing income	6,474	10,951
Fair value and nonhedge derivative loss	(8,539)	(5,445)
Equity securities gains, net	912	2,832
Fixed income securities gains, net	30,914	3,299
Impairment losses on investment securities:
Impairment losses on investment securities	(27)	(31,493)
Non-credit losses on secutities not expectd to be sold (recognized in other comprehensive income	0	21,376
Net impairment losses on investment securities	(27)	(10,117)
Other noninterest income	2,531	6,184
Total noninterest income	138,319	121,219
Noninterest expense:
Salaries and employee benefits	233,406	229,789
Occupancy, net	28,305	27,389
Equipment, software and furniture	27,944	26,074
Gains (Losses) on Sales of Other Real Estate	1,607	1,977
Credit-related expense	6,906	10,482
Provision for unfunded lending commitments	(1,012)	(6,354)
Professional and legal services	10,995	10,471
Advertising	6,398	5,893
FDIC premiums	7,922	9,711
Amortization of core deposit and other intangibles	2,882	3,819
Other	72,710	78,097
Total noninterest expense	398,063	397,348
Income before income taxes	157,331	171,021
Income taxes	56,121	60,634
Net income	101,210	110,387
Net loss applicable to noncontrolling interests	0	(336)
Net income applicable to controlling interest	101,210	110,723
Preferred stock dividends	(25,020)	(22,399)
Net earnings applicable to common shareholders	76,190	88,324
Weighted average common shares outstanding during the period:
Basic shares	184,440	183,396
Diluted shares	185,123	183,655
Net earnings per common share:
Basic	$ 0.41	$ 0.48
Diluted	$ 0.41	$ 0.48
Interest and Dividend Income, Operating	$ 467,568	$ 484,748