Consolidated Statement of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Interest income
Loans and leases, including fees	$ 871,345	$ 672,092	$ 2,602,208	$ 1,981,904
Investment securities
Fully taxable	84,893	93,062	274,092	272,163
Exempt from federal taxes	623	950	2,081	3,330
Deposits at banks	12,354	3,852	33,684	10,321
Other	300	70	905	749
Total interest income	969,515	770,026	2,912,970	2,268,467
Interest expense
Interest-checking deposits	378	360	1,192	1,020
Savings deposits	23,689	10,937	59,714	31,517
Time deposits	27,886	3,643	79,075	11,073
Deposits at Cayman Islands office	204	151	578	448
Short-term borrowings	169	32	3,474	102
Long-term borrowings	58,849	62,076	174,814	188,764
Total interest expense	111,175	77,199	318,847	232,924
Net interest income	858,340	692,827	2,594,123	2,035,543
Provision for credit losses	47,000	44,000	128,000	112,000
Net interest income after provision for credit losses	811,340	648,827	2,466,123	1,923,543
Other income
Mortgage banking revenues	103,747	84,035	275,193	288,238
Service charges on deposit accounts	107,935	107,259	314,212	314,860
Trust income	118,654	113,744	350,181	356,076
Brokerage services income	15,914	16,902	48,190	49,224
Trading account and foreign exchange gains	12,754	8,362	33,434	20,639
Gain (loss) on bank investment securities	28,480		28,748	(108)
Other revenues from operations	103,866	109,397	310,579	348,000
Total other income	491,350	439,699	1,360,537	1,376,929
Other expense
Salaries and employee benefits	399,786	363,567	1,230,246	1,115,117
Equipment and net occupancy	75,263	68,470	225,165	201,792
Printing, postage and supplies	8,972	8,691	30,865	27,586
Amortization of core deposit and other intangible assets	9,787	4,090	33,524	16,848
FDIC assessments	28,459	11,090	76,054	32,551
Other costs of operations	230,125	197,908	682,528	642,925
Total other expense	752,392	653,816	2,278,382	2,036,819
Income before taxes	550,298	434,710	1,548,278	1,263,653
Income taxes	200,314	154,309	563,735	454,951
Net income	349,984	280,401	984,543	808,702
Net income available to common shareholders
Basic	326,992	257,337	915,670	739,627
Diluted	$ 326,998	$ 257,346	$ 915,686	$ 739,656
Net income per common share
Basic	$ 2.10	$ 1.94	$ 5.82	$ 5.59
Diluted	2.10	1.93	5.80	5.56
Cash dividends per common share	$ 0.70	$ 0.70	$ 2.10	$ 2.10
Average common shares outstanding
Basic	155,493	132,630	157,336	132,347
Diluted	156,026	133,376	157,843	133,089