|
Available-for-Sale and Other Securities (Maturities/Unrealized) (Details) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
12 Months Ended |
|
Mar. 31, 2014
|
Mar. 31, 2013
|
Dec. 31, 2013
|
| Investment maturity date range |
|
|
|
| Total investment securities, Amortized Cost |
$ 7,796,612
|
|
$ 7,368,907
|
| Available-for-sale and other securities |
7,754,790
|
|
7,308,753
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
7,796,612
|
|
7,368,907
|
| Total investment securities, Unrealized Gross Losses |
(129,372)
|
|
(152,696)
|
| Available-for-sale and other securities |
7,754,790
|
|
7,308,753
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
2,852,033
|
|
2,722,688
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
(51,066)
|
|
(67,184)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
273,671
|
|
178,956
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
(78,306)
|
|
(85,512)
|
| Total temporarily impaired securities, Fair Value |
3,125,704
|
|
2,901,644
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
(129,372)
|
|
(152,696)
|
|
U.S. Treasury [Member]
|
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
50,278
|
|
50,793
|
| Fair Value, Under 1 year |
50,471
|
|
51,086
|
| Amortized Cost, 1-5 years |
506
|
|
507
|
| Fair Value, 1-5 years |
516
|
|
516
|
| Amortized Cost, 6-10 years |
0
|
|
0
|
| Fair Value, 6-10 years |
0
|
|
0
|
| Amortized Cost, Over 10 years |
1
|
|
1
|
| Fair Value, Over 10 years |
2
|
|
2
|
| Total investment securities, Amortized Cost |
50,785
|
|
51,301
|
| Available-for-sale and other securities |
50,989
|
|
51,604
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
50,785
|
|
51,301
|
| Total investment securities, Unrealized Gross Gains |
(204)
|
|
(303)
|
| Total investment securities, Unrealized Gross Losses |
0
|
0
|
0
|
| Available-for-sale and other securities |
50,989
|
|
51,604
|
| 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 |
14,961
|
|
16,548
|
| Fair Value, Under 1 year |
15,018
|
|
16,607
|
| Amortized Cost, 1-5 years |
262,104
|
|
164,794
|
| Fair Value, 1-5 years |
264,306
|
|
166,946
|
| Amortized Cost, 6-10 years |
333,078
|
|
440,116
|
| Fair Value, 6-10 years |
337,954
|
|
443,456
|
| Amortized Cost, Over 10 years |
3,948,814
|
|
2,940,986
|
| Fair Value, Over 10 years |
3,948,601
|
|
2,939,212
|
| Total investment securities, Amortized Cost |
4,558,957
|
|
3,562,444
|
| Available-for-sale and other securities |
4,565,879
|
|
3,566,221
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
4,558,957
|
|
3,562,444
|
| Total investment securities, Unrealized Gross Gains |
(42,926)
|
|
(42,319)
|
| Total investment securities, Unrealized Gross Losses |
(36,004)
|
|
(38,542)
|
| Available-for-sale and other securities |
4,565,879
|
|
3,566,221
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
1,836,191
|
|
1,628,454
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
(32,057)
|
|
(37,174)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
52,032
|
|
12,682
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
(3,947)
|
|
(1,368)
|
| Total temporarily impaired securities, Fair Value |
1,888,223
|
|
1,641,136
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
(36,004)
|
|
(38,542)
|
|
Other Federal Agencies [Member]
|
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
2,633
|
|
2,833
|
| Fair Value, Under 1 year |
2,682
|
|
2,880
|
| Amortized Cost, 1-5 years |
41,070
|
|
291,726
|
| Fair Value, 1-5 years |
42,044
|
|
297,510
|
| Amortized Cost, 6-10 years |
27,513
|
|
19,318
|
| Fair Value, 6-10 years |
27,626
|
|
19,498
|
| Amortized Cost, Over 10 years |
62,101
|
|
0
|
| Fair Value, Over 10 years |
62,248
|
|
0
|
| Total investment securities, Amortized Cost |
133,317
|
|
313,877
|
| Available-for-sale and other securities |
134,600
|
|
319,888
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
133,317
|
|
313,877
|
| Total investment securities, Unrealized Gross Gains |
(1,389)
|
|
(6,105)
|
| Total investment securities, Unrealized Gross Losses |
(106)
|
|
(94)
|
| Available-for-sale and other securities |
134,600
|
|
319,888
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
13,268
|
|
2,069
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
(106)
|
|
(94)
|
| 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 |
13,268
|
|
2,069
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
(106)
|
|
(94)
|
|
Total U.S. Government backed agencies [Member]
|
|
|
|
| Investment maturity date range |
|
|
|
| Total investment securities, Amortized Cost |
4,743,059
|
|
3,927,622
|
| Available-for-sale and other securities |
4,751,468
|
|
3,937,713
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
4,743,059
|
|
3,927,622
|
| Total investment securities, Unrealized Gross Gains |
(44,519)
|
|
(48,727)
|
| Total investment securities, Unrealized Gross Losses |
(36,110)
|
|
(38,636)
|
| Available-for-sale and other securities |
4,751,468
|
|
3,937,713
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
1,849,459
|
|
1,630,523
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
(32,163)
|
|
(37,268)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
52,032
|
|
12,682
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
(3,947)
|
|
(1,368)
|
| Total temporarily impaired securities, Fair Value |
1,901,491
|
|
1,643,205
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
(36,110)
|
|
(38,636)
|
|
Municipal securities [Member]
|
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
224,398
|
|
191,788
|
| Fair Value, Under 1 year |
222,746
|
|
190,762
|
| Amortized Cost, 1-5 years |
182,603
|
|
206,719
|
| Fair Value, 1-5 years |
186,351
|
|
211,916
|
| Amortized Cost, 6-10 years |
612,741
|
|
556,873
|
| Fair Value, 6-10 years |
621,873
|
|
554,772
|
| Amortized Cost, Over 10 years |
190,145
|
|
184,883
|
| Fair Value, Over 10 years |
195,016
|
|
188,542
|
| Total investment securities, Amortized Cost |
1,209,887
|
|
1,140,263
|
| Available-for-sale and other securities |
1,225,986
|
|
1,145,992
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
1,209,887
|
|
1,140,263
|
| Total investment securities, Unrealized Gross Gains |
(25,767)
|
|
(18,825)
|
| Total investment securities, Unrealized Gross Losses |
(9,668)
|
|
(13,096)
|
| Available-for-sale and other securities |
1,225,986
|
|
1,145,992
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
472,500
|
|
551,114
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
(8,802)
|
|
(12,395)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
15,409
|
|
7,531
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
(866)
|
|
(701)
|
| Total temporarily impaired securities, Fair Value |
487,909
|
|
558,645
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
(9,668)
|
|
(13,096)
|
|
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 |
0
|
|
0
|
| Fair Value, 1-5 years |
0
|
|
0
|
| Amortized Cost, 6-10 years |
1,837
|
|
1,997
|
| Fair Value, 6-10 years |
1,924
|
|
2,089
|
| Amortized Cost, Over 10 years |
47,568
|
|
49,241
|
| Fair Value, Over 10 years |
45,603
|
|
47,015
|
| Total investment securities, Amortized Cost |
49,405
|
|
51,238
|
| Available-for-sale and other securities |
47,527
|
|
49,104
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
49,405
|
|
51,238
|
| Total investment securities, Unrealized Gross Gains |
(1,218)
|
|
(1,188)
|
| Total investment securities, Unrealized Gross Losses |
(3,096)
|
|
(3,322)
|
| Available-for-sale and other securities |
47,527
|
|
49,104
|
| 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 |
22,832
|
|
22,639
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
(3,096)
|
|
(3,322)
|
| Total temporarily impaired securities, Fair Value |
22,832
|
|
22,639
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
(3,096)
|
|
(3,322)
|
|
Other Asset Backed Securities [Member]
|
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
5,323
|
|
0
|
| Fair Value, Under 1 year |
5,322
|
|
0
|
| Amortized Cost, 1-5 years |
345,512
|
|
434,825
|
| Fair Value, 1-5 years |
347,760
|
|
438,156
|
| Amortized Cost, 6-10 years |
84,864
|
|
260,354
|
| Fair Value, 6-10 years |
83,950
|
|
260,880
|
| Amortized Cost, Over 10 years |
568,329
|
|
477,105
|
| Fair Value, Over 10 years |
496,324
|
|
392,004
|
| Total investment securities, Amortized Cost |
1,004,028
|
|
1,172,284
|
| Available-for-sale and other securities |
933,356
|
|
1,091,040
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
1,004,028
|
|
1,172,284
|
| Total investment securities, Unrealized Gross Gains |
(3,779)
|
|
(6,771)
|
| Total investment securities, Unrealized Gross Losses |
(74,451)
|
|
(88,015)
|
| Available-for-sale and other securities |
933,356
|
|
1,091,040
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
414,910
|
|
391,665
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
(7,699)
|
|
(9,720)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
109,969
|
|
107,419
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
(66,752)
|
|
(78,295)
|
| Total temporarily impaired securities, Fair Value |
524,879
|
|
499,084
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
(74,451)
|
|
(88,015)
|
|
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
|
|
280,595
|
| Fair Value, 1-5 years |
0
|
|
285,874
|
| 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
|
| Total investment securities, Amortized Cost |
0
|
|
280,595
|
| Available-for-sale and other securities |
0
|
|
285,874
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
0
|
|
280,595
|
| Total investment securities, Unrealized Gross Gains |
0
|
|
(5,279)
|
| Total investment securities, Unrealized Gross Losses |
0
|
|
0
|
| Available-for-sale and other securities |
0
|
|
285,874
|
| 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 |
902
|
|
903
|
| Fair Value, Under 1 year |
909
|
|
916
|
| Amortized Cost, 1-5 years |
266,068
|
|
283,079
|
| Fair Value, 1-5 years |
277,104
|
|
292,989
|
| Amortized Cost, 6-10 years |
179,652
|
|
161,398
|
| Fair Value, 6-10 years |
174,407
|
|
152,608
|
| Amortized Cost, Over 10 years |
0
|
|
10,113
|
| Fair Value, Over 10 years |
0
|
|
10,727
|
| Total investment securities, Amortized Cost |
446,622
|
|
455,493
|
| Available-for-sale and other securities |
452,420
|
|
457,240
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
446,622
|
|
455,493
|
| Total investment securities, Unrealized Gross Gains |
(11,716)
|
|
(11,241)
|
| Total investment securities, Unrealized Gross Losses |
(5,918)
|
|
(9,494)
|
| Available-for-sale and other securities |
452,420
|
|
457,240
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
113,744
|
|
146,308
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
(2,323)
|
|
(7,729)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
71,480
|
|
26,155
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
(3,595)
|
|
(1,765)
|
| Total temporarily impaired securities, Fair Value |
185,224
|
|
172,463
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
(5,918)
|
|
(9,494)
|
|
Other Securities [Member]
|
|
|
|
| Investment maturity date range |
|
|
|
| Amortized Cost, Under 1 year |
750
|
|
500
|
| Fair Value, Under 1 year |
750
|
|
500
|
| Amortized Cost, 1-5 years |
3,150
|
|
3,399
|
| Fair Value, 1-5 years |
3,070
|
|
3,327
|
| 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
|
| Non-marketable equity securities, Amortized Cost Non-marketable equity securities, Amortized Cost |
323,150
|
|
320,991
|
| Marketable equity securities, Amortized Cost |
16,561
|
|
16,522
|
| Total investment securities, Amortized Cost |
343,611
|
|
341,412
|
| Non-marketable equity securities, Fair Value |
323,151
|
|
320,992
|
| Marketable equity securities, fair value |
17,062
|
|
16,971
|
| Available-for-sale and other securities |
344,033
|
|
341,790
|
| Amortized cost, fair value, and gross unrealized gains and losses recognized in accumulated other comprehensive income |
|
|
|
| Total investment securities, Amortized Cost |
343,611
|
|
341,412
|
| Total investment securities, Unrealized Gross Gains |
(551)
|
|
(511)
|
| Total investment securities, Unrealized Gross Losses |
(129)
|
|
(133)
|
| Available-for-sale and other securities |
344,033
|
|
341,790
|
| Investment securities in unrealized loss position |
|
|
|
| Total temporarily impaired securities, less than 12 months, Fair value |
1,420
|
|
3,078
|
| Total temporarily impaired securities, less than 12 months, Unrealized Losses |
(79)
|
|
(72)
|
| Total temporarily impaired securities, over 12 months, Fair Value |
1,949
|
|
2,530
|
| Total temporarily impaired securities, over 12 months, Unrealized Losses |
(50)
|
|
(61)
|
| Total temporarily impaired securities, Fair Value |
3,369
|
|
5,608
|
| Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total |
$ (129)
|
|
$ (133)
|