Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Document Fiscal Year Focus			2014
Interest income:
Interest and fees on loans	$ 433,801	$ 460,308	$ 868,145	$ 913,741
Interest on money market investments	4,888	5,764	10,018	11,203
Investment Income, Interest	24,502	27,161	52,596	53,037
Interest expense:
Interest on deposits	12,096	15,143	24,875	30,785
Interest Expense, Debt	34,812	47,433	73,136	98,424
Total interest expense	46,908	62,576	98,011	129,209
Net interest income	416,283	430,657	832,748	848,772
Provision for loan losses	(54,416)	(21,990)	(55,026)	(51,025)
Net interest income after provision for loan losses	470,699	452,647	887,774	899,797
Noninterest income:
Service charges and fees on deposit accounts	42,873	44,329	85,467	87,909
Other service charges, commissions and fees	47,513	45,888	91,032	88,619
Trust and wealth management income	7,980	7,732	15,057	14,726
Capital markets and foreign exchange	5,842	6,740	10,842	14,226
Dividends and other investment income	7,995	11,339	15,859	24,063
Loan sales and servicing income	6,335	10,723	12,809	21,674
Fair value and nonhedge derivative loss	(1,934)	(2,957)	(10,473)	(8,402)
Equity securities gains, net	2,513	2,209	3,425	5,041
Fixed income securities gains, net	5,026	(1,153)	35,940	2,146
Impairment losses on investment securities:
Impairment losses on investment securities	0	(4,910)	(27)	(36,403)
Non-credit losses on secutities not expectd to be sold (recognized in other comprehensive income	0	693	0	22,069
Net impairment losses on investment securities	0	(4,217)	(27)	(14,334)
Other noninterest income	707	4,515	3,238	10,699
Total noninterest income	124,850	125,148	263,169	246,367
Noninterest expense:
Salaries and employee benefits	238,764	227,328	472,170	457,117
Occupancy, net	28,939	27,951	57,244	55,340
Equipment, software and furniture	27,986	26,545	55,930	52,619
Gains (Losses) on Sales of Other Real Estate	(266)	1,590	1,341	3,567
Credit-related expense	7,139	9,397	14,045	19,879
Provision for unfunded lending commitments	6,779	3,627	5,767	(2,727)
Professional and legal services	12,171	17,149	23,166	27,620
Advertising	6,803	5,807	13,201	11,700
FDIC premiums	8,017	10,124	15,939	19,835
Amortization of core deposit and other intangibles	2,736	3,762	5,618	7,581
Extinguishment of Debt, Amount	0	40,282	0	40,282
Other	66,959	78,116	139,669	156,213
Total noninterest expense	406,027	451,678	804,090	849,026
Income before income taxes	189,522	126,117	346,853	297,138
Income taxes	69,972	43,091	126,093	103,725
Net income	119,550	83,026	220,760	193,413
Net loss applicable to noncontrolling interests	0	0	0	(336)
Net income applicable to controlling interest	119,550	83,026	220,760	193,749
Preferred stock dividends	(15,060)	(27,641)	(40,080)	(50,040)
Net earnings applicable to common shareholders	104,490	55,385	180,680	143,709
Weighted average common shares outstanding during the period:
Basic shares	184,668	183,647	184,555	183,522
Diluted shares	185,286	184,062	185,202	183,863
Net earnings per common share:
Basic	$ 0.56	$ 0.30	$ 0.97	$ 0.78
Diluted	$ 0.56	$ 0.30	$ 0.97	$ 0.77
Interest and Dividend Income, Operating	$ 463,191	$ 493,233	$ 930,759	$ 977,981