Fair Values of Assets and Liabilities (Recurring basis) (Details) (USD $) In Thousands, unless otherwise specified
|
Sep. 30, 2013
|
Dec. 31, 2012
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
$ 74,167
|
$ 91,205
|
Available-for-sale and other securities |
6,446,681
|
7,566,175
|
Recurring Basis [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Mortgage loans held for sale |
313,099
|
452,949
|
Trading account securities |
74,167
|
91,205
|
Available-for-sale and other securities |
6,129,219
|
7,258,100
|
Automobile loans |
69,780
|
142,762
|
MSR's |
34,106
|
35,202
|
Derivative assets |
218,706
|
385,697
|
Liabilities measured at fair value on a recurring basis |
|
|
Derivatives |
131,349
|
152,188
|
Other liabilities |
0
|
0
|
Recurring Basis [Member] | U.S. Treasury [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
51,554
|
52,311
|
Recurring Basis [Member] | Federal agencies - mortgage backed securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
3,221,711
|
4,264,670
|
Recurring Basis [Member] | Federal agencies: Other agencies [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
339,419
|
359,626
|
Recurring Basis [Member] | Municipal securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
3,282
|
15,218
|
Available-for-sale and other securities |
566,478
|
501,000
|
Recurring Basis [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
50,766
|
71,568
|
Recurring Basis [Member] | Asset-backed Securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
1,128,327
|
1,029,083
|
Recurring Basis [Member] | Covered Bonds [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
286,924
|
290,625
|
Recurring Basis [Member] | Corporate debt [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
460,972
|
668,142
|
Recurring Basis [Member] | Other securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
70,885
|
75,987
|
Available-for-sale and other securities |
23,068
|
21,075
|
Recurring Basis [Member] | Level 1 [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Mortgage loans held for sale |
0
|
0
|
Trading account securities |
70,447
|
75,729
|
Available-for-sale and other securities |
70,848
|
69,488
|
Automobile loans |
0
|
0
|
MSR's |
0
|
0
|
Derivative assets |
13,340
|
6,368
|
Liabilities measured at fair value on a recurring basis |
|
|
Derivatives |
23,755
|
6,813
|
Other liabilities |
0
|
0
|
Recurring Basis [Member] | Level 1 [Member] | U.S. Treasury [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
51,554
|
52,311
|
Recurring Basis [Member] | Level 1 [Member] | Federal agencies - mortgage backed securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 1 [Member] | Federal agencies: Other agencies [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 1 [Member] | Municipal securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 1 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 1 [Member] | Asset-backed Securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 1 [Member] | Covered Bonds [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 1 [Member] | Corporate debt [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 1 [Member] | Other securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
70,447
|
75,729
|
Available-for-sale and other securities |
19,294
|
17,177
|
Recurring Basis [Member] | Level 2 [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Mortgage loans held for sale |
313,099
|
452,949
|
Trading account securities |
3,720
|
15,476
|
Available-for-sale and other securities |
5,852,283
|
6,968,572
|
Automobile loans |
0
|
0
|
MSR's |
0
|
0
|
Derivative assets |
252,131
|
465,517
|
Liabilities measured at fair value on a recurring basis |
|
|
Derivatives |
136,540
|
228,312
|
Other liabilities |
0
|
0
|
Recurring Basis [Member] | Level 2 [Member] | U.S. Treasury [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 2 [Member] | Federal agencies - mortgage backed securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
3,221,711
|
4,264,670
|
Recurring Basis [Member] | Level 2 [Member] | Federal agencies: Other agencies [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
339,419
|
359,626
|
Recurring Basis [Member] | Level 2 [Member] | Municipal securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
3,282
|
15,218
|
Available-for-sale and other securities |
507,623
|
439,772
|
Recurring Basis [Member] | Level 2 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
18,435
|
22,793
|
Recurring Basis [Member] | Level 2 [Member] | Asset-backed Securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
1,013,425
|
919,046
|
Recurring Basis [Member] | Level 2 [Member] | Covered Bonds [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
286,924
|
290,625
|
Recurring Basis [Member] | Level 2 [Member] | Corporate debt [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
460,972
|
668,142
|
Recurring Basis [Member] | Level 2 [Member] | Other securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
438
|
258
|
Available-for-sale and other securities |
3,774
|
3,898
|
Recurring Basis [Member] | Level 3 [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Mortgage loans held for sale |
0
|
0
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
206,088
|
220,040
|
Automobile loans |
69,780
|
142,762
|
MSR's |
34,106
|
35,202
|
Derivative assets |
8,127
|
13,180
|
Liabilities measured at fair value on a recurring basis |
|
|
Derivatives |
542
|
478
|
Other liabilities |
0
|
0
|
Recurring Basis [Member] | Level 3 [Member] | U.S. Treasury [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 3 [Member] | Federal agencies - mortgage backed securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 3 [Member] | Federal agencies: Other agencies [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 3 [Member] | Municipal securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
58,855
|
61,228
|
Recurring Basis [Member] | Level 3 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
32,331
|
48,775
|
Recurring Basis [Member] | Level 3 [Member] | Asset-backed Securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
114,902
|
110,037
|
Recurring Basis [Member] | Level 3 [Member] | Covered Bonds [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
|
0
|
Recurring Basis [Member] | Level 3 [Member] | Corporate debt [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Level 3 [Member] | Other securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Mortgage loans held for sale |
0
|
0
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Automobile loans |
0
|
0
|
MSR's |
0
|
0
|
Derivative assets |
(54,892)
|
(99,368)
|
Liabilities measured at fair value on a recurring basis |
|
|
Derivatives |
(29,488)
|
(83,415)
|
Other liabilities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | U.S. Treasury [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | Federal agencies - mortgage backed securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | Federal agencies: Other agencies [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | Municipal securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | Asset-backed Securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | Covered Bonds [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | Corporate debt [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Available-for-sale and other securities |
0
|
0
|
Recurring Basis [Member] | Netting Adjustments [Member] | Other securities [Member]
|
|
|
Assets measured at fair value on a recurring basis |
|
|
Trading account securities |
0
|
0
|
Available-for-sale and other securities |
$ 0
|
$ 0
|