AVAILABLE-FOR-SALE AND OTHER SECURITIES (Maturities/Unrealized) (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
12 Months Ended |
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Dec. 31, 2014 |
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
|
| Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |
$ 2,440
|
$ 0
|
$ 2,440
|
$ 0
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Total |
10,981,563
|
|
10,981,563
|
|
$ 9,359,886
|
| Non-marketable equity securities, Fair Value |
332,418
|
|
332,418
|
|
331,559
|
| Marketable equity securities, Amortized Cost |
755
|
|
755
|
|
536
|
| Marketable equity securities, fair value |
1,348
|
|
1,348
|
|
1,269
|
| Available-for-sale and other securities |
11,094,868
|
|
11,094,868
|
|
9,384,670
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
10,981,563
|
|
10,981,563
|
|
9,359,886
|
| Total investment securities, Unrealized Gross Gains |
|
|
(174,673)
|
|
(117,554)
|
| Total investment securities, Unrealized Gross Losses |
|
|
(61,368)
|
|
(92,770)
|
| Available-for-sale and other securities |
11,094,868
|
|
11,094,868
|
|
9,384,670
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
848,079
|
|
848,079
|
|
1,437,360
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
(12,877)
|
|
(12,949)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
777,645
|
|
777,645
|
|
1,063,142
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
(48,491)
|
|
(79,821)
|
| Total temporarily impaired securities, Fair Value |
1,625,724
|
|
1,625,724
|
|
2,500,502
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
(61,368)
|
|
(92,770)
|
| Trust Preferred Securities Total [Member] |
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
|
| Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |
2,440
|
0
|
2,440
|
0
|
|
| U.S. Treasury |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Under 1 year |
8,583
|
|
8,583
|
|
0
|
| Fair Value, Under 1 year |
8,585
|
|
8,585
|
|
0
|
| Amortized Cost, 1-5 years |
5,451
|
|
5,451
|
|
5,435
|
| Fair Value, 1-5 years |
5,510
|
|
5,510
|
|
5,452
|
| Amortized Cost, 6-10 years |
0
|
|
0
|
|
0
|
| Fair Value, 6-10 years |
0
|
|
0
|
|
0
|
| Amortized Cost, Over 10 years |
0
|
|
0
|
|
0
|
| Fair Value, Over 10 years |
0
|
|
0
|
|
0
|
| Amortized Cost, Total |
14,034
|
|
14,034
|
|
5,435
|
| Fair Value, Total |
14,095
|
|
14,095
|
|
5,452
|
| Available-for-sale and other securities |
14,095
|
|
14,095
|
|
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
14,034
|
|
14,034
|
|
5,435
|
| Total investment securities, Unrealized Gross Gains |
|
|
(61)
|
|
(17)
|
| Total investment securities, Unrealized Gross Losses |
|
|
0
|
|
0
|
| Available-for-sale and other securities |
14,095
|
|
14,095
|
|
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
0
|
|
0
|
| Federal agencies - mortgage backed securities |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Under 1 year |
52,951
|
|
52,951
|
|
47,023
|
| Fair Value, Under 1 year |
53,052
|
|
53,052
|
|
47,190
|
| Amortized Cost, 1-5 years |
125,173
|
|
125,173
|
|
216,775
|
| Fair Value, 1-5 years |
128,473
|
|
128,473
|
|
221,078
|
| Amortized Cost, 6-10 years |
227,466
|
|
227,466
|
|
184,576
|
| Fair Value, 6-10 years |
231,846
|
|
231,846
|
|
186,938
|
| Amortized Cost, Over 10 years |
6,261,562
|
|
6,261,562
|
|
4,825,525
|
| Fair Value, Over 10 years |
6,350,842
|
|
6,350,842
|
|
4,867,495
|
| Amortized Cost, Total |
6,667,152
|
|
6,667,152
|
|
5,273,899
|
| Fair Value, Total |
6,764,213
|
|
6,764,213
|
|
5,322,701
|
| Available-for-sale and other securities |
6,764,213
|
|
6,764,213
|
|
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
6,667,152
|
|
6,667,152
|
|
5,273,899
|
| Total investment securities, Unrealized Gross Gains |
|
|
(104,044)
|
|
(63,906)
|
| Total investment securities, Unrealized Gross Losses |
|
|
(6,983)
|
|
(15,104)
|
| Available-for-sale and other securities |
6,764,213
|
|
6,764,213
|
|
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
417,246
|
|
417,246
|
|
501,858
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
(1,087)
|
|
(1,909)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
262,384
|
|
262,384
|
|
527,280
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
(5,896)
|
|
(13,195)
|
| Total temporarily impaired securities, Fair Value |
679,630
|
|
679,630
|
|
1,029,138
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
(6,983)
|
|
(15,104)
|
| Other Federal Agencies |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Under 1 year |
1,702
|
|
1,702
|
|
33,047
|
| Fair Value, Under 1 year |
1,712
|
|
1,712
|
|
33,237
|
| Amortized Cost, 1-5 years |
8,264
|
|
8,264
|
|
9,122
|
| Fair Value, 1-5 years |
8,672
|
|
8,672
|
|
9,575
|
| Amortized Cost, 6-10 years |
214,184
|
|
214,184
|
|
103,530
|
| Fair Value, 6-10 years |
219,193
|
|
219,193
|
|
105,019
|
| Amortized Cost, Over 10 years |
144,292
|
|
144,292
|
|
204,016
|
| Fair Value, Over 10 years |
146,961
|
|
146,961
|
|
203,712
|
| Amortized Cost, Total |
368,442
|
|
368,442
|
|
349,715
|
| Fair Value, Total |
376,538
|
|
376,538
|
|
351,543
|
| Available-for-sale and other securities |
376,538
|
|
376,538
|
|
351,543
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
368,442
|
|
368,442
|
|
349,715
|
| Total investment securities, Unrealized Gross Gains |
|
|
(8,096)
|
|
(2,871)
|
| Total investment securities, Unrealized Gross Losses |
|
|
0
|
|
(1,043)
|
| Available-for-sale and other securities |
376,538
|
|
376,538
|
|
351,543
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
0
|
|
0
|
|
159,708
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
0
|
|
(1,020)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
0
|
|
0
|
|
1,281
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
0
|
|
(23)
|
| Total temporarily impaired securities, Fair Value |
0
|
|
0
|
|
160,989
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
0
|
|
(1,043)
|
| Total U.S. Government backed agencies |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Total |
7,049,628
|
|
7,049,628
|
|
5,629,049
|
| Fair Value, Total |
7,154,846
|
|
7,154,846
|
|
5,679,696
|
| Available-for-sale and other securities |
7,154,846
|
|
7,154,846
|
|
5,679,696
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
7,049,628
|
|
7,049,628
|
|
5,629,049
|
| Total investment securities, Unrealized Gross Gains |
|
|
(112,201)
|
|
(66,794)
|
| Total investment securities, Unrealized Gross Losses |
|
|
(6,983)
|
|
(16,147)
|
| Available-for-sale and other securities |
7,154,846
|
|
7,154,846
|
|
5,679,696
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
417,246
|
|
417,246
|
|
661,566
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
(1,087)
|
|
(2,929)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
262,384
|
|
262,384
|
|
528,561
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
(5,896)
|
|
(13,218)
|
| Total temporarily impaired securities, Fair Value |
679,630
|
|
679,630
|
|
1,190,127
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
(6,983)
|
|
(16,147)
|
| Municipal securities |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Under 1 year |
280,971
|
|
280,971
|
|
256,399
|
| Fair Value, Under 1 year |
276,600
|
|
276,600
|
|
255,835
|
| Amortized Cost, 1-5 years |
499,125
|
|
499,125
|
|
269,385
|
| Fair Value, 1-5 years |
501,559
|
|
501,559
|
|
274,003
|
| Amortized Cost, 6-10 years |
987,208
|
|
987,208
|
|
938,780
|
| Fair Value, 6-10 years |
993,630
|
|
993,630
|
|
945,954
|
| Amortized Cost, Over 10 years |
530,386
|
|
530,386
|
|
376,747
|
| Fair Value, Over 10 years |
556,302
|
|
556,302
|
|
392,777
|
| Amortized Cost, Total |
2,297,690
|
|
2,297,690
|
|
1,841,311
|
| Fair Value, Total |
2,328,091
|
|
2,328,091
|
|
1,868,569
|
| Available-for-sale and other securities |
2,328,091
|
|
2,328,091
|
|
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
2,297,690
|
|
2,297,690
|
|
1,841,311
|
| Total investment securities, Unrealized Gross Gains |
|
|
(49,426)
|
|
(37,398)
|
| Total investment securities, Unrealized Gross Losses |
|
|
(19,025)
|
|
(10,140)
|
| Available-for-sale and other securities |
2,328,091
|
|
2,328,091
|
|
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
282,128
|
|
282,128
|
|
568,619
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
(11,078)
|
|
(9,127)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
243,660
|
|
243,660
|
|
96,426
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
(7,947)
|
|
(1,013)
|
| Total temporarily impaired securities, Fair Value |
525,788
|
|
525,788
|
|
665,045
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
(19,025)
|
|
(10,140)
|
| Private label CMO |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Under 1 year |
0
|
|
0
|
|
0
|
| Fair Value, Under 1 year |
0
|
|
0
|
|
0
|
| Amortized Cost, 1-5 years |
0
|
|
0
|
|
0
|
| Fair Value, 1-5 years |
0
|
|
0
|
|
0
|
| Amortized Cost, 6-10 years |
0
|
|
0
|
|
1,314
|
| Fair Value, 6-10 years |
0
|
|
0
|
|
1,371
|
| Amortized Cost, Over 10 years |
0
|
|
0
|
|
42,416
|
| Fair Value, Over 10 years |
0
|
|
0
|
|
40,555
|
| Amortized Cost, Total |
0
|
|
0
|
|
43,730
|
| Fair Value, Total |
0
|
|
0
|
|
41,926
|
| Available-for-sale and other securities |
0
|
|
0
|
|
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
0
|
|
0
|
|
43,730
|
| Total investment securities, Unrealized Gross Gains |
|
|
0
|
|
(1,116)
|
| Total investment securities, Unrealized Gross Losses |
|
|
0
|
|
(2,920)
|
| Available-for-sale and other securities |
0
|
|
0
|
|
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
0
|
|
0
|
|
0
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
0
|
|
0
|
| Total temporarily impaired securities, over 12 months, Fair Value |
0
|
|
0
|
|
22,650
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
0
|
|
(2,920)
|
| Total temporarily impaired securities, Fair Value |
0
|
|
0
|
|
22,650
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
0
|
|
(2,920)
|
| Other Asset Backed Securities |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Under 1 year |
0
|
|
0
|
|
0
|
| Fair Value, Under 1 year |
0
|
|
0
|
|
0
|
| Amortized Cost, 1-5 years |
90,168
|
|
90,168
|
|
228,852
|
| Fair Value, 1-5 years |
90,580
|
|
90,580
|
|
229,364
|
| Amortized Cost, 6-10 years |
128,425
|
|
128,425
|
|
144,163
|
| Fair Value, 6-10 years |
129,530
|
|
129,530
|
|
144,193
|
| Amortized Cost, Over 10 years |
624,998
|
|
624,998
|
|
641,984
|
| Fair Value, Over 10 years |
593,899
|
|
593,899
|
|
582,441
|
| Amortized Cost, Total |
843,591
|
|
843,591
|
|
1,014,999
|
| Fair Value, Total |
814,009
|
|
814,009
|
|
955,998
|
| Available-for-sale and other securities |
814,009
|
|
814,009
|
|
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
843,591
|
|
843,591
|
|
1,014,999
|
| Total investment securities, Unrealized Gross Gains |
|
|
(4,471)
|
|
(2,061)
|
| Total investment securities, Unrealized Gross Losses |
|
|
(34,053)
|
|
(61,062)
|
| Available-for-sale and other securities |
814,009
|
|
814,009
|
|
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
102,467
|
|
102,467
|
|
157,613
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
(221)
|
|
(641)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
248,239
|
|
248,239
|
|
325,691
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
(33,832)
|
|
(60,421)
|
| Total temporarily impaired securities, Fair Value |
350,706
|
|
350,706
|
|
483,304
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
(34,053)
|
|
(61,062)
|
| Corporate debt |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Under 1 year |
20,695
|
|
20,695
|
|
18,767
|
| Fair Value, Under 1 year |
20,746
|
|
20,746
|
|
18,953
|
| Amortized Cost, 1-5 years |
325,773
|
|
325,773
|
|
314,773
|
| Fair Value, 1-5 years |
333,460
|
|
333,460
|
|
323,503
|
| Amortized Cost, 6-10 years |
95,909
|
|
95,909
|
|
145,611
|
| Fair Value, 6-10 years |
94,883
|
|
94,883
|
|
143,720
|
| Amortized Cost, Over 10 years |
0
|
|
0
|
|
0
|
| Fair Value, Over 10 years |
0
|
|
0
|
|
0
|
| Amortized Cost, Total |
442,377
|
|
442,377
|
|
479,151
|
| Fair Value, Total |
449,089
|
|
449,089
|
|
486,176
|
| Available-for-sale and other securities |
449,089
|
|
449,089
|
|
486,176
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
442,377
|
|
442,377
|
|
479,151
|
| Total investment securities, Unrealized Gross Gains |
|
|
(7,983)
|
|
(9,442)
|
| Total investment securities, Unrealized Gross Losses |
|
|
(1,271)
|
|
(2,417)
|
| Available-for-sale and other securities |
449,089
|
|
449,089
|
|
486,176
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
45,450
|
|
45,450
|
|
49,562
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
(469)
|
|
(252)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
21,876
|
|
21,876
|
|
88,398
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
(802)
|
|
(2,165)
|
| Total temporarily impaired securities, Fair Value |
67,326
|
|
67,326
|
|
137,960
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
(1,271)
|
|
(2,417)
|
| Other Securities |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Under 1 year |
0
|
|
0
|
|
250
|
| Fair Value, Under 1 year |
0
|
|
0
|
|
250
|
| Amortized Cost, 1-5 years |
3,950
|
|
3,950
|
|
3,150
|
| Fair Value, 1-5 years |
3,914
|
|
3,914
|
|
3,066
|
| Amortized Cost, 6-10 years |
0
|
|
0
|
|
0
|
| Fair Value, 6-10 years |
0
|
|
0
|
|
0
|
| Amortized Cost, Over 10 years |
0
|
|
0
|
|
0
|
| Fair Value, Over 10 years |
0
|
|
0
|
|
0
|
| Amortized Cost, Total |
348,277
|
|
348,277
|
|
351,646
|
| Fair Value, Total |
348,833
|
|
348,833
|
|
352,305
|
| Available-for-sale and other securities |
348,833
|
|
348,833
|
|
352,305
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
348,277
|
|
348,277
|
|
351,646
|
| Total investment securities, Unrealized Gross Gains |
|
|
(592)
|
|
(743)
|
| Total investment securities, Unrealized Gross Losses |
|
|
(36)
|
|
(84)
|
| Available-for-sale and other securities |
348,833
|
|
348,833
|
|
352,305
|
| Investment securities in unrealized loss position |
|
|
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
788
|
|
788
|
|
0
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
|
(22)
|
|
0
|
| Total temporarily impaired securities, over 12 months, Fair Value |
1,486
|
|
1,486
|
|
1,416
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
|
(14)
|
|
(84)
|
| Total temporarily impaired securities, Fair Value |
2,274
|
|
2,274
|
|
1,416
|
| Available-for-sale Securities, Gross Unrealized Loss |
|
|
(36)
|
|
(84)
|
| Mutual Funds |
|
|
|
|
|
| Investment maturity date range |
|
|
|
|
|
| Amortized Cost, Total |
11,154
|
|
11,154
|
|
16,151
|
| Fair Value, Total |
11,153
|
|
11,153
|
|
16,161
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
|
|
| Amortized Cost, Total |
11,154
|
|
11,154
|
|
$ 16,151
|
| Debt Securities [Member] |
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
|
| Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net |
$ 2,440
|
$ 0
|
$ 2,440
|
$ 0
|
|