Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 457,758	$ 534,086
Overnight investments	2,871,105	2,063,132
Investment securities available for sale	6,687,289	6,861,293
Investment securities held to maturity	194	255
Loans held for sale	66,988	59,766
Loans and Leases Receivable, Gross	20,417,689	20,239,990
Less allowance for loan and lease losses	(206,783)	(206,216)
Net loans and leases	20,210,906	20,033,774
Premises and equipment	1,127,371	1,135,829
Other Real Estate	65,068	65,559
Income earned not collected	73,518	70,036
FDIC Indemnification Asset	7,474	4,054
Goodwill	139,773	139,773
Other intangible assets	84,743	90,986
Other assets	403,470	417,391
Total assets	32,195,657	31,475,934
Liabilities
Noninterest-bearing	9,661,441	9,274,470
Interest-bearing	17,703,804	17,656,285
Total deposits	27,365,245	26,930,755
Short-term borrowings	689,236	594,733
Long-term obligations	779,087	704,155
FDIC loss share payable	128,243	126,453
Other liabilities	272,652	247,729
Total liabilities	29,234,463	28,603,825
Shareholders' Equity
Surplus	658,918	658,918
Retained earnings	2,314,090	2,265,621
Accumulated other comprehensive loss	(23,824)	(64,440)
Total shareholders' equity	2,961,194	2,872,109
Total liabilities and shareholders' equity	32,195,657	31,475,934
Class A Common Stock
Shareholders' Equity
Common stock	11,005	11,005
Class B Common Stock
Shareholders' Equity
Common stock	$ 1,005	$ 1,005