Loans and Allowances for Credit Losses, By Aging Category (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
$ 16,597,641
|
$ 15,626,933
|
Nonaccrual |
230,984
|
147,128
|
Total |
16,989,660
|
15,941,154
|
Commercial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
10,205,838
|
10,165,995
|
Nonaccrual |
178,953
|
76,424
|
Total |
10,390,824
|
10,252,531
|
Commercial [Member] | Energy [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
2,364,890
|
3,033,504
|
Nonaccrual |
132,499
|
61,189
|
Total |
2,497,868
|
3,097,328
|
Commercial [Member] | Services [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
3,099,605
|
2,769,895
|
Nonaccrual |
8,173
|
10,290
|
Total |
3,108,990
|
2,784,276
|
Commercial [Member] | Wholesale/retail [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
1,561,650
|
1,418,396
|
Nonaccrual |
11,407
|
2,919
|
Total |
1,576,818
|
1,422,064
|
Commercial [Member] | Manufacturing [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
509,662
|
556,398
|
Nonaccrual |
4,931
|
331
|
Total |
514,975
|
556,729
|
Commercial [Member] | Healthcare [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
2,201,050
|
1,879,873
|
Nonaccrual |
825
|
1,072
|
Total |
2,201,916
|
1,883,380
|
Commercial [Member] | Other commercial and industrial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
468,981
|
507,929
|
Nonaccrual |
21,118
|
623
|
Total |
490,257
|
508,754
|
Commercial Real Estate [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
3,803,519
|
3,241,541
|
Nonaccrual |
5,521
|
9,001
|
Total |
3,809,046
|
3,259,033
|
Commercial Real Estate [Member] | Residential construction and land development [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
132,100
|
156,017
|
Nonaccrual |
3,433
|
4,409
|
Total |
135,533
|
160,426
|
Commercial Real Estate [Member] | Retail [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
761,562
|
795,180
|
Nonaccrual |
326
|
1,319
|
Total |
761,888
|
796,499
|
Commercial Real Estate [Member] | Office [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
798,462
|
637,056
|
Nonaccrual |
426
|
651
|
Total |
798,888
|
637,707
|
Commercial Real Estate [Member] | Multifamily [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
903,234
|
742,697
|
Nonaccrual |
38
|
274
|
Total |
903,272
|
751,085
|
Commercial Real Estate [Member] | Industrial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
871,673
|
563,093
|
Nonaccrual |
76
|
76
|
Total |
871,749
|
563,169
|
Commercial Real Estate [Member] | Other commercial real estate [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
336,488
|
347,498
|
Nonaccrual |
1,222
|
2,272
|
Total |
337,716
|
350,147
|
Residential Mortgage [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
1,749,473
|
1,667,864
|
Nonaccrual |
46,220
|
61,240
|
Total |
1,949,832
|
1,876,893
|
Residential Mortgage [Member] | Permanent mortgage [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
979,386
|
913,062
|
Nonaccrual |
22,855
|
28,984
|
Total |
1,006,820
|
945,336
|
Residential Mortgage [Member] | Permanent mortgages guaranteed by U.S. government agencies [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
40,594
|
33,653
|
Nonaccrual |
11,846
|
21,900
|
Total |
199,387
|
196,937
|
Residential Mortgage [Member] | Home equity [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
729,493
|
721,149
|
Nonaccrual |
11,519
|
10,356
|
Total |
743,625
|
734,620
|
Personal [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Current |
838,811
|
551,533
|
Nonaccrual |
290
|
463
|
Total |
839,958
|
552,697
|
30 to 59 Days Past Due [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
28,603
|
36,703
|
30 to 59 Days Past Due [Member] | Commercial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
4,968
|
5,269
|
30 to 59 Days Past Due [Member] | Commercial [Member] | Energy [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
479
|
2,635
|
30 to 59 Days Past Due [Member] | Commercial [Member] | Services [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
191
|
66
|
30 to 59 Days Past Due [Member] | Commercial [Member] | Wholesale/retail [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
3,761
|
49
|
30 to 59 Days Past Due [Member] | Commercial [Member] | Manufacturing [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
382
|
0
|
30 to 59 Days Past Due [Member] | Commercial [Member] | Healthcare [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
2,435
|
30 to 59 Days Past Due [Member] | Commercial [Member] | Other commercial and industrial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
155
|
84
|
30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
6
|
8,114
|
30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Residential construction and land development [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Retail [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Office [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Multifamily [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
8,114
|
30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Industrial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] | Other commercial real estate [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
6
|
0
|
30 to 59 Days Past Due [Member] | Residential Mortgage [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
23,040
|
22,655
|
30 to 59 Days Past Due [Member] | Residential Mortgage [Member] | Permanent mortgage [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
3,299
|
3,290
|
30 to 59 Days Past Due [Member] | Residential Mortgage [Member] | Permanent mortgages guaranteed by U.S. government agencies [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
17,465
|
16,986
|
30 to 59 Days Past Due [Member] | Residential Mortgage [Member] | Home equity [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
2,276
|
2,379
|
30 to 59 Days Past Due [Member] | Personal [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
589
|
665
|
60 to 89 Days Past Due [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
16,748
|
18,182
|
60 to 89 Days Past Due [Member] | Commercial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
1,065
|
4,041
|
60 to 89 Days Past Due [Member] | Commercial [Member] | Energy [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial [Member] | Services [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
1,021
|
4,025
|
60 to 89 Days Past Due [Member] | Commercial [Member] | Wholesale/retail [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial [Member] | Manufacturing [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial [Member] | Healthcare [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
41
|
0
|
60 to 89 Days Past Due [Member] | Commercial [Member] | Other commercial and industrial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
3
|
16
|
60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Residential construction and land development [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Retail [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Office [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Multifamily [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Industrial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] | Other commercial real estate [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
60 to 89 Days Past Due [Member] | Residential Mortgage [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
15,420
|
14,113
|
60 to 89 Days Past Due [Member] | Residential Mortgage [Member] | Permanent mortgage [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
1,280
|
0
|
60 to 89 Days Past Due [Member] | Residential Mortgage [Member] | Permanent mortgages guaranteed by U.S. government agencies [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
13,803
|
13,397
|
60 to 89 Days Past Due [Member] | Residential Mortgage [Member] | Home equity [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
337
|
716
|
60 to 89 Days Past Due [Member] | Personal [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
263
|
28
|
90 Days or More [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
115,684
|
112,208
|
90 Days or More [Member] | Commercial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
802
|
90 Days or More [Member] | Commercial [Member] | Energy [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial [Member] | Services [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial [Member] | Wholesale/retail [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
700
|
90 Days or More [Member] | Commercial [Member] | Manufacturing [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial [Member] | Healthcare [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial [Member] | Other commercial and industrial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
102
|
90 Days or More [Member] | Commercial Real Estate [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
377
|
90 Days or More [Member] | Commercial Real Estate [Member] | Residential construction and land development [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial Real Estate [Member] | Retail [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial Real Estate [Member] | Office [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial Real Estate [Member] | Multifamily [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial Real Estate [Member] | Industrial [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Commercial Real Estate [Member] | Other commercial real estate [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
377
|
90 Days or More [Member] | Residential Mortgage [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
115,679
|
111,021
|
90 Days or More [Member] | Residential Mortgage [Member] | Permanent mortgage [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
0
|
90 Days or More [Member] | Residential Mortgage [Member] | Permanent mortgages guaranteed by U.S. government agencies [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
115,679
|
111,001
|
90 Days or More [Member] | Residential Mortgage [Member] | Home equity [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
0
|
20
|
90 Days or More [Member] | Personal [Member] |
|
|
Financing receivable, recorded investment, aging [Abstract] |
|
|
Past Due |
$ 5
|
$ 8
|