PREMISES AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 700,280	$ 691,980
Accumulated depreciation and amortization	385,020	372,524
Premises and equipment, net	315,260	319,456
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	77,264	76,611
Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	324,100	317,824
Buildings And Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	10 years	10 years
Buildings And Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	40 years	40 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	8,771	9,759
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	10 years	10 years
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	39 years	39 years
Equipment, Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	274,016	280,423
Equipment, Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	3 years	3 years
Equipment, Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life (Years)	12 years	12 years
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 16,129	$ 7,363