ALLOWANCE FOR CREDIT LOSSES (Allowance For Credit Losses By Segment, Class And Impairment Status) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	$ 38,237	$ 51,392
Allowance for impaired loans and leases	4,353	2,350
Allowance for all other loans and leases	119,383	124,108
Total allowance	123,736	126,458	$ 142,443	$ 153,236
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans	8,314	7,127
Allowance for impaired loans and leases	1,837	78
Allowance for all other loans and leases	17,333	17,505
Total allowance	19,170	17,583	21,419
Credit Cards [Member]
Financing Receivable, Impaired [Line Items]
Allowance for all other loans and leases	7,787	4,047
Total allowance	7,787	4,047	6,514
All Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded balance of impaired loans		103
Allowance for all other loans and leases	5,346	6,117
Total allowance	$ 5,346	$ 6,117	$ 11,761