Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
ASSETS
Cash and due from banks	$ 421,836	$ 244,223	$ 226,026
Interest-bearing deposits in banks	487,654	13,791	111,909
Total cash and cash equivalents	909,490	258,014	337,935
Investment securities
Held-to-maturity	2,551,860	622,121	352,221
Available-for-sale	3,299,392	2,920,971	3,216,365
Other investments	267,565	140,717	140,742
Loans held for sale	22,855	23,683	19,018
Total loans	14,151,953	9,750,784	9,371,816
Allowance for loan losses	(147,714)	(142,197)	(146,455)
Net loans	14,004,239	9,608,587	9,225,361
Premises and equipment, net	317,107	181,149	184,851
Goodwill	734,382	460,044	460,044
Intangible assets	88,419	6,373	7,274
Covered other real estate	67,786	59,855	54,549
Accrued interest receivable and other assets	1,269,034	631,498	622,984
Total assets	23,532,129	14,913,012	14,621,344
Deposits:
Demand-non-interest bearing	5,277,647	3,338,371	3,227,819
Demand-interest bearing	2,504,368	1,287,674	1,080,790
Savings and money market accounts	8,520,806	5,758,123	5,728,598
Certificates and other time deposits	2,816,901	1,375,257	1,578,634
Total deposits	19,119,722	11,759,425	11,615,841
Federal funds purchased and securities sold under agreements to repurchase	844,871	1,104,525	896,910
Wholesale borrowings	201,337	136,883	178,135
Long-term Debt	324,422	0	0
Accrued taxes, expenses and other liabilities	390,868	266,977	329,643
Total liabilities	20,881,220	13,267,810	13,020,529
Shareholders' equity:
5.875% Non-Cumulative Perpetual Preferred stock, Series A, without par value: authorized 115,000 shares; 100,000 issued	100,000	0	0
Adjustments to Additional Paid in Capital, Warrant Issued	3,000	0	0
Common stock, without par value; authorized 300,000,000 shares; issued: June 30, 2013 - 170,179,911 shares, December 31, 2012 and June 30, 2012 - 115,121,731 shares	127,937	127,937	127,937
Capital surplus	1,386,063	475,979	472,138
Accumulated other comprehensive loss	(71,897)	(16,205)	(18,425)
Retained earnings	1,235,530	1,195,850	1,157,422
Treasury stock, at cost: June 30, 2013 - 5,134,463 shares; December 31, 2012 - 5,472,915 shares; June 30, 2012 - 5,481,058 shares	(129,724)	(138,359)	(138,257)
Total shareholders' equity	2,650,909	1,645,202	1,600,815
Total liabilities and shareholders' equity	$ 23,532,129	$ 14,913,012	$ 14,621,344