Available-for-Sale and Other Securities (Maturities/Unrealized) (Details) - USD ($)
$ in Thousands |
3 Months Ended |
6 Months Ended |
12 Months Ended |
Jun. 30, 2014 |
Jun. 30, 2015 |
Dec. 31, 2014 |
| Investment maturity date range |
|
|
|
| Non-marketable equity securities, Amortized Cost Non-marketable equity securities, Amortized Cost |
|
$ 332,095
|
$ 331,559
|
| Marketable equity securities, Amortized Cost |
|
962
|
536
|
| Total investment securities, Amortized Cost |
|
10,203,184
|
9,359,886
|
| Non-marketable equity securities, Fair Value |
|
332,095
|
331,559
|
| Marketable equity securities, fair value |
|
1,731
|
1,269
|
| Available-for-sale and other securities |
|
10,254,871
|
9,384,670
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
10,203,184
|
9,359,886
|
| Total investment securities, Unrealized Gross Gains |
|
(129,921)
|
(117,554)
|
| Total investment securities, Unrealized Gross Losses |
|
(78,234)
|
(92,770)
|
| Available-for-sale and other securities |
|
10,254,871
|
9,384,670
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
2,014,035
|
1,437,360
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
(24,532)
|
(12,949)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
820,806
|
1,063,142
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
(53,702)
|
(79,821)
|
| Total temporarily impaired securities, Fair Value |
|
2,834,841
|
2,500,502
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
(78,234)
|
(92,770)
|
| U.S. Treasury [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
7,083
|
0
|
| Fair Value, Under 1 year |
|
7,085
|
0
|
| Amortized Cost, 1-5 years |
|
5,446
|
5,435
|
| Fair Value, 1-5 years |
|
5,515
|
5,452
|
| Amortized Cost, 6-10 years |
|
0
|
0
|
| Fair Value, 6-10 years |
|
0
|
0
|
| Amortized Cost, Over 10 years |
|
0
|
0
|
| Fair Value, Over 10 years |
|
0
|
0
|
| Fair Value, Total |
|
12,600
|
5,452
|
| Total investment securities, Amortized Cost |
|
12,529
|
5,435
|
| Available-for-sale and other securities |
|
12,600
|
5,452
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
12,529
|
5,435
|
| Total investment securities, Unrealized Gross Gains |
|
(71)
|
(17)
|
| Total investment securities, Unrealized Gross Losses |
$ 0
|
0
|
0
|
| Available-for-sale and other securities |
|
12,600
|
5,452
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
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
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
0
|
0
|
| Total temporarily impaired securities, Fair Value |
|
0
|
0
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
$ 0
|
0
|
0
|
| Federal agencies - mortgage backed securities [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
32,515
|
47,023
|
| Fair Value, Under 1 year |
|
32,602
|
47,190
|
| Amortized Cost, 1-5 years |
|
201,594
|
216,775
|
| Fair Value, 1-5 years |
|
204,837
|
221,078
|
| Amortized Cost, 6-10 years |
|
228,390
|
184,576
|
| Fair Value, 6-10 years |
|
232,017
|
186,938
|
| Amortized Cost, Over 10 years |
|
5,647,118
|
4,825,525
|
| Fair Value, Over 10 years |
|
5,691,814
|
4,867,495
|
| Fair Value, Total |
|
6,161,270
|
5,322,701
|
| Total investment securities, Amortized Cost |
|
6,109,617
|
5,273,899
|
| Available-for-sale and other securities |
|
6,161,270
|
5,322,701
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
6,109,617
|
5,273,899
|
| Total investment securities, Unrealized Gross Gains |
|
(68,308)
|
(63,906)
|
| Total investment securities, Unrealized Gross Losses |
|
(16,655)
|
(15,104)
|
| Available-for-sale and other securities |
|
6,161,270
|
5,322,701
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
1,165,377
|
501,858
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
(6,575)
|
(1,909)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
284,316
|
527,280
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
(10,080)
|
(13,195)
|
| Total temporarily impaired securities, Fair Value |
|
1,449,693
|
1,029,138
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
(16,655)
|
(15,104)
|
| Other Federal Agencies [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
1,703
|
33,047
|
| Fair Value, Under 1 year |
|
1,710
|
33,237
|
| Amortized Cost, 1-5 years |
|
8,265
|
9,122
|
| Fair Value, 1-5 years |
|
8,693
|
9,575
|
| Amortized Cost, 6-10 years |
|
152,433
|
103,530
|
| Fair Value, 6-10 years |
|
155,589
|
105,019
|
| Amortized Cost, Over 10 years |
|
161,679
|
204,016
|
| Fair Value, Over 10 years |
|
163,192
|
203,712
|
| Fair Value, Total |
|
329,184
|
351,543
|
| Total investment securities, Amortized Cost |
|
324,080
|
349,715
|
| Available-for-sale and other securities |
|
329,184
|
351,543
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
324,080
|
349,715
|
| Total investment securities, Unrealized Gross Gains |
|
(5,121)
|
(2,871)
|
| Total investment securities, Unrealized Gross Losses |
|
(17)
|
(1,043)
|
| Available-for-sale and other securities |
|
329,184
|
351,543
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
1,484
|
159,708
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
(17)
|
(1,020)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
0
|
1,281
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
0
|
(23)
|
| Total temporarily impaired securities, Fair Value |
|
1,484
|
160,989
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
(17)
|
(1,043)
|
| Total U.S. Government backed agencies [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Fair Value, Total |
|
6,503,054
|
5,679,696
|
| Total investment securities, Amortized Cost |
|
6,446,226
|
5,629,049
|
| Available-for-sale and other securities |
|
6,503,054
|
5,679,696
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
6,446,226
|
5,629,049
|
| Total investment securities, Unrealized Gross Gains |
|
(73,500)
|
(66,794)
|
| Total investment securities, Unrealized Gross Losses |
|
(16,672)
|
(16,147)
|
| Available-for-sale and other securities |
|
6,503,054
|
5,679,696
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
1,166,861
|
661,566
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
(6,592)
|
(2,929)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
284,316
|
528,561
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
(10,080)
|
(13,218)
|
| Total temporarily impaired securities, Fair Value |
|
1,451,177
|
1,190,127
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
(16,672)
|
(16,147)
|
| Municipal securities [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
252,645
|
256,399
|
| Fair Value, Under 1 year |
|
244,911
|
255,835
|
| Amortized Cost, 1-5 years |
|
389,879
|
269,385
|
| Fair Value, 1-5 years |
|
391,985
|
274,003
|
| Amortized Cost, 6-10 years |
|
997,694
|
938,780
|
| Fair Value, 6-10 years |
|
1,006,042
|
945,954
|
| Amortized Cost, Over 10 years |
|
453,343
|
376,747
|
| Fair Value, Over 10 years |
|
475,428
|
392,777
|
| Fair Value, Total |
|
2,118,366
|
1,868,569
|
| Total investment securities, Amortized Cost |
|
2,093,561
|
1,841,311
|
| Available-for-sale and other securities |
|
2,118,366
|
1,868,569
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
2,093,561
|
1,841,311
|
| Total investment securities, Unrealized Gross Gains |
|
(44,281)
|
(37,398)
|
| Total investment securities, Unrealized Gross Losses |
|
(19,476)
|
(10,140)
|
| Available-for-sale and other securities |
|
2,118,366
|
1,868,569
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
521,393
|
568,619
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
(15,835)
|
(9,127)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
231,486
|
96,426
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
(3,641)
|
(1,013)
|
| Total temporarily impaired securities, Fair Value |
|
752,879
|
665,045
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
(19,476)
|
(10,140)
|
| Private label CMO [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
0
|
0
|
| Fair Value, Under 1 year |
|
0
|
0
|
| Amortized Cost, 1-5 years |
|
1,065
|
0
|
| Fair Value, 1-5 years |
|
1,109
|
0
|
| Amortized Cost, 6-10 years |
|
0
|
1,314
|
| Fair Value, 6-10 years |
|
0
|
1,371
|
| Amortized Cost, Over 10 years |
|
38,217
|
42,416
|
| Fair Value, Over 10 years |
|
36,895
|
40,555
|
| Fair Value, Total |
|
38,004
|
41,926
|
| Total investment securities, Amortized Cost |
|
39,282
|
43,730
|
| Available-for-sale and other securities |
|
38,004
|
41,926
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
39,282
|
43,730
|
| Total investment securities, Unrealized Gross Gains |
|
(1,133)
|
(1,116)
|
| Total investment securities, Unrealized Gross Losses |
|
(2,411)
|
(2,920)
|
| Available-for-sale and other securities |
|
38,004
|
41,926
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
0
|
0
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
0
|
0
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
22,246
|
22,650
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
(2,411)
|
(2,920)
|
| Total temporarily impaired securities, Fair Value |
|
22,246
|
22,650
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
(2,411)
|
(2,920)
|
| Other Asset Backed Securities [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
0
|
0
|
| Fair Value, Under 1 year |
|
0
|
0
|
| Amortized Cost, 1-5 years |
|
146,428
|
228,852
|
| Fair Value, 1-5 years |
|
146,936
|
229,364
|
| Amortized Cost, 6-10 years |
|
128,509
|
144,163
|
| Fair Value, 6-10 years |
|
128,725
|
144,193
|
| Amortized Cost, Over 10 years |
|
552,443
|
641,984
|
| Fair Value, Over 10 years |
|
515,656
|
582,441
|
| Fair Value, Total |
|
791,317
|
955,998
|
| Total investment securities, Amortized Cost |
|
827,380
|
1,014,999
|
| Available-for-sale and other securities |
|
791,317
|
955,998
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
827,380
|
1,014,999
|
| Total investment securities, Unrealized Gross Gains |
|
(1,946)
|
(2,061)
|
| Total investment securities, Unrealized Gross Losses |
|
(38,009)
|
(61,062)
|
| Available-for-sale and other securities |
|
791,317
|
955,998
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
234,815
|
157,613
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
(1,490)
|
(641)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
259,598
|
325,691
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
(36,519)
|
(60,421)
|
| Total temporarily impaired securities, Fair Value |
|
494,413
|
483,304
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
(38,009)
|
(61,062)
|
| Covered Bonds [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
0
|
0
|
| Fair Value, Under 1 year |
|
0
|
0
|
| Amortized Cost, 1-5 years |
|
0
|
0
|
| Fair Value, 1-5 years |
|
0
|
0
|
| Amortized Cost, 6-10 years |
|
0
|
0
|
| Fair Value, 6-10 years |
|
0
|
0
|
| Amortized Cost, Over 10 years |
|
0
|
0
|
| Fair Value, Over 10 years |
|
0
|
0
|
| Fair Value, Total |
|
0
|
0
|
| Total investment securities, Amortized Cost |
|
0
|
0
|
| Available-for-sale and other securities |
|
0
|
0
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
0
|
0
|
| Total investment securities, Unrealized Gross Gains |
|
0
|
0
|
| Total investment securities, Unrealized Gross Losses |
|
0
|
0
|
| 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
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
0
|
0
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
0
|
0
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
0
|
0
|
| Total temporarily impaired securities, Fair Value |
|
0
|
0
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
0
|
0
|
| Corporate debt [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
29,986
|
18,767
|
| Fair Value, Under 1 year |
|
29,990
|
18,953
|
| Amortized Cost, 1-5 years |
|
308,150
|
314,773
|
| Fair Value, 1-5 years |
|
315,987
|
323,503
|
| Amortized Cost, 6-10 years |
|
109,769
|
145,611
|
| Fair Value, 6-10 years |
|
108,607
|
143,720
|
| Amortized Cost, Over 10 years |
|
0
|
0
|
| Fair Value, Over 10 years |
|
0
|
0
|
| Fair Value, Total |
|
454,584
|
486,176
|
| Total investment securities, Amortized Cost |
|
447,905
|
479,151
|
| Available-for-sale and other securities |
|
454,584
|
486,176
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
447,905
|
479,151
|
| Total investment securities, Unrealized Gross Gains |
|
(8,292)
|
(9,442)
|
| Total investment securities, Unrealized Gross Losses |
|
(1,613)
|
(2,417)
|
| Available-for-sale and other securities |
|
454,584
|
486,176
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
90,201
|
49,562
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
(580)
|
(252)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
21,677
|
88,398
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
(1,033)
|
(2,165)
|
| Total temporarily impaired securities, Fair Value |
|
111,878
|
137,960
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
(1,613)
|
(2,417)
|
| Other Securities [Member] |
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
|
0
|
250
|
| Fair Value, Under 1 year |
|
0
|
250
|
| Amortized Cost, 1-5 years |
|
3,950
|
3,150
|
| Fair Value, 1-5 years |
|
3,897
|
3,066
|
| Amortized Cost, 6-10 years |
|
0
|
0
|
| Fair Value, 6-10 years |
|
0
|
0
|
| Amortized Cost, Over 10 years |
|
0
|
0
|
| Fair Value, Over 10 years |
|
0
|
0
|
| Fair Value, Total |
|
349,546
|
352,305
|
| Total investment securities, Amortized Cost |
|
348,830
|
351,646
|
| Available-for-sale and other securities |
|
349,546
|
352,305
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
|
348,830
|
351,646
|
| Total investment securities, Unrealized Gross Gains |
|
(769)
|
(743)
|
| Total investment securities, Unrealized Gross Losses |
|
(53)
|
(84)
|
| Available-for-sale and other securities |
|
349,546
|
352,305
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
|
765
|
0
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
|
(35)
|
0
|
| Total temporarily impaired securities, over 12 months, Fair Value |
|
1,483
|
1,416
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
|
(18)
|
(84)
|
| Total temporarily impaired securities, Fair Value |
|
2,248
|
1,416
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
|
$ (53)
|
$ (84)
|