Finance Receivables And Allowance For Credit Losses (Schedule Of Past Due Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 30,481	$ 32,070
60-89 Days Past Due	5,294	6,731
Recorded Investment > 90 Days and Accruing	1,077	3,448
Nonaccrual	254,336	298,208
Total Past Due	291,188	340,457
Current	4,905,406	4,426,746
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,691	2,755
60-89 Days Past Due	515	357
Recorded Investment > 90 Days and Accruing	322	358
Nonaccrual	36,766	34,104
Total Past Due	40,294	37,574
Current	1,296,526	1,179,080
Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	11	0
60-89 Days Past Due	0	164
Recorded Investment > 90 Days and Accruing	0	0
Nonaccrual	14,304	5,425
Total Past Due	14,315	5,589
Current	84,766	40,552
Commercial Real Estate - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	3,439	7,466
60-89 Days Past Due	665	413
Recorded Investment > 90 Days and Accruing	236	279
Nonaccrual	81,525	60,762
Total Past Due	85,865	68,920
Current	1,070,937	952,309
Consumer, Heloc [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	961	706
60-89 Days Past Due	15	186
Recorded Investment > 90 Days and Accruing	0	151
Nonaccrual	1,720	1,269
Total Past Due	2,696	2,312
Current	255,418	233,291
Consumer, Auto [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	4,070	5,745
60-89 Days Past Due	881	1,276
Recorded Investment > 90 Days and Accruing	328	246
Nonaccrual	1,980	1,943
Total Past Due	7,259	9,210
Current	518,826	474,365
Consumer - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,732	2,002
60-89 Days Past Due	403	463
Recorded Investment > 90 Days and Accruing	110	76
Nonaccrual	2,109	1,578
Total Past Due	4,354	4,119
Current	118,302	138,064
Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	14,686	7,950
60-89 Days Past Due	1,874	1,839
Recorded Investment > 90 Days and Accruing	66	0
Nonaccrual	11,986	10,247
Total Past Due	28,612	20,036
Current	1,296,091	975,422
Covered Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,891	5,446
60-89 Days Past Due	941	2,033
Recorded Investment > 90 Days and Accruing	15	2,338
Nonaccrual	103,946	182,880
Total Past Due	107,793	192,697
Current	$ 264,540	$ 433,663