Consolidated Statement of Income (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 and leases, including fees	$ 705,395	$ 674,549	$ 1,387,850	$ 1,323,063
Deposits at banks	1,455	767	1,722	980
Federal funds sold	45	8	62	11
Agreements to resell securities	1		10
Trading account	241	318	879	635
Investment securities
Fully taxable	41,293	59,724	86,053	122,688
Exempt from federal taxes	1,777	2,020	3,606	4,104
Total interest income	750,207	737,386	1,480,182	1,451,481
Interest expense
NOW accounts	321	424	643	707
Savings deposits	13,790	16,940	27,827	35,123
Time deposits	7,484	12,354	15,680	25,863
Deposits at Cayman Islands office	200	232	588	445
Short-term borrowings	96	348	327	651
Long-term borrowings	50,729	59,105	101,480	120,320
Total interest expense	72,620	89,403	146,545	183,109
Net interest income	677,587	647,983	1,333,637	1,268,372
Provision for credit losses	57,000	60,000	95,000	109,000
Net interest income after provision for credit losses	620,587	587,983	1,238,637	1,159,372
Other income
Mortgage banking revenues	91,262	69,514	184,365	125,706
Service charges on deposit accounts	111,717	110,982	222,666	219,871
Trust income	124,728	122,275	246,331	239,228
Brokerage services income	17,258	16,172	32,969	30,073
Trading account and foreign exchange gains	9,224	6,238	18,151	16,809
Gain (loss) on bank investment securities	56,457	(408)	56,457	(363)
Total other-than-temporary impairment ("OTTI") losses		(4,072)	(1,884)	(24,112)
Portion of OTTI losses recognized in other comprehensive income (before taxes)		(12,101)	(7,916)	(3,547)
Net OTTI losses recognized in earnings		(16,173)	(9,800)	(27,659)
Equity in earnings of Bayview Lending Group LLC	(2,453)	(6,635)	(6,109)	(11,387)
Other revenues from operations	100,496	89,685	196,541	176,095
Total other income	508,689	391,650	941,571	768,373
Other expense
Salaries and employee benefits	323,136	323,686	679,687	669,784
Equipment and net occupancy	64,278	65,376	129,437	130,419
Printing, postage and supplies	10,298	11,368	20,997	23,240
Amortization of core deposit and other intangible assets	12,502	15,907	25,845	32,681
FDIC assessments	17,695	24,962	37,133	53,911
Other costs of operations	170,682	186,093	341,088	357,052
Total other expense	598,591	627,392	1,234,187	1,267,087
Income before taxes	530,685	352,241	946,021	660,658
Income taxes	182,219	118,861	323,442	220,815
Net income	348,466	233,380	622,579	439,843
Net income available to common shareholders
Basic	328,538	214,709	583,597	402,947
Diluted	$ 328,557	$ 214,716	$ 583,633	$ 402,958
Net income per common share
Basic	$ 2.56	$ 1.71	$ 4.56	$ 3.21
Diluted	$ 2.55	$ 1.71	$ 4.53	$ 3.20
Cash dividends per common share	$ 0.70	$ 0.70	$ 1.40	$ 1.40
Average common shares outstanding
Basic	128,252	125,488	127,962	125,354
Diluted	129,017	125,897	128,828	125,756