CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Interest income:
Loans	$ 394,925	$ 389,904	$ 780,851	$ 778,444
Money market investments	829	964	1,784	1,912
Investment securities	36,106	44,258	73,929	89,800
Trading account securities	5,456	5,963	10,970	11,854
Total interest income	437,316	441,089	867,534	882,010
Interest Expense Abstract
Deposits	35,764	48,542	74,120	100,275
Short-term borrowings	9,767	13,044	19,549	26,627
Long-term debt	36,066	37,324	71,833	74,331
Total interest expense	81,597	98,910	165,502	201,233
Net interest income	355,719	342,179	702,032	680,777
Provision for loan losses	249,408	119,199	473,264	219,922
Net interest income after provision for loan losses	106,311	222,980	228,768	460,855
Service charges on deposit accounts	43,937	46,130	87,659	92,719
Other service fees	65,073	64,987	126,797	133,894
Net Gain Loss And Valuation Adjustments On Investment Securities	5,856	(349)	5,856	(349)
Trading account profit	7,900	(7,283)	7,825	(9,426)
Net gain on sale of loans, including valuation adjustments on loans held-for-sale	4,382	(15,397)	(44,577)	74
Adjustments (expense) to indemnity reserves on loans sold	(11,632)	(5,398)	(27,775)	(9,273)
FDIC loss share (expense) income	(3,755)	2,575	(30,021)	(12,680)
Fair value change in equity appreciation instrument	0	0	0	0
Other operating income	181,602	24,167	201,656	54,399
Total non-interest income	293,363	109,432	327,420	249,358
Noninterest Expense Abstract
Personnel costs	114,679	116,336	230,668	237,827
Net occupancy expenses	24,108	24,190	47,581	47,528
Equipment Expense	11,843	10,900	23,793	22,241
Other taxes	15,288	12,074	26,874	25,512
Professional fees	69,964	69,672	140,461	135,740
Communication	6,644	6,645	13,476	13,776
Business promotion	15,562	16,980	28,479	29,830
FDIC deposit insurance	19,503	22,907	28,783	47,833
Loss on early extinguishment of debt	0	25,072	0	25,141
Other real estate owned (O R E O) expenses	5,762	2,380	52,503	16,545
Other operating expenses	23,766	34,879	45,731	50,670
Amortization of intangibles	2,467	2,531	4,935	5,124
Total operating expenses	309,586	344,566	643,284	657,767
Income before income tax	90,088	(12,154)	(87,096)	52,446
Income tax expense	(237,380)	(77,893)	(294,257)	(61,701)
Net Income	327,468	65,739	207,161	114,147
Net income applicable to common stock	326,537	64,809	205,300	112,286
Earnings Per Share Basic	$ 3.18	$ 0.63	$ 2.00	$ 1.10
Earnings Per Share Diluted	$ 3.17	$ 0.63	$ 1.99	$ 1.10
Non Covered Under Loss Sharing Agreements With F D I C [Member]
Interest Expense Abstract
Provision for loan losses	223,908	81,743	430,208	164,257
Covered Under Loss Sharing Agreements With F D I C [Member]
Interest Expense Abstract
Provision for loan losses	$ 25,500	$ 37,456	$ 43,056	$ 55,665