Quarterly report pursuant to Section 13 or 15(d)

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Credit Quality Indicators (Details)

v3.5.0.2
LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - Credit Quality Indicators (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial $ 21,372,474 $ 20,559,834
Commercial real estate 5,322,068 5,268,651
Automobile 10,380,644 9,480,678
Home equity 8,447,066 8,470,482
Residential mortgage 6,377,017 5,998,400
Other consumer 644,152 563,054
Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 21,372,474 20,559,834
Commercial and Industrial | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 20,025,364 19,257,789
Commercial and Industrial | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 400,128 399,339
Commercial and Industrial | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 942,010 895,577
Commercial and Industrial | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 4,972 7,129
Commercial and Industrial | Purchased credit-impaired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 9,176 21,017
Commercial and Industrial | Purchased credit-impaired | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 1,484 3,051
Commercial and Industrial | Purchased credit-impaired | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 293 674
Commercial and Industrial | Purchased credit-impaired | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 7,379 15,661
Commercial and Industrial | Purchased credit-impaired | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 20 1,631
Commercial and Industrial | Owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 3,951,297 4,012,800
Commercial and Industrial | Owner occupied | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 3,708,602 3,731,113
Commercial and Industrial | Owner occupied | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 83,694 114,490
Commercial and Industrial | Owner occupied | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 158,248 165,301
Commercial and Industrial | Owner occupied | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 753 1,896
Commercial and Industrial | Other commercial and industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 17,412,001 16,526,017
Commercial and Industrial | Other commercial and industrial | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 16,315,278 15,523,625
Commercial and Industrial | Other commercial and industrial | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 316,141 284,175
Commercial and Industrial | Other commercial and industrial | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 776,383 714,615
Commercial and Industrial | Other commercial and industrial | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial and industrial 4,199 3,602
Commercial Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 5,322,068 5,268,651
Commercial Real Estate | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 5,117,875 5,066,054
Commercial Real Estate | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 81,344 79,787
Commercial Real Estate | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 119,771 121,167
Commercial Real Estate | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 3,078 1,643
Commercial Real Estate | Purchased credit-impaired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 17,073 13,758
Commercial Real Estate | Purchased credit-impaired | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 3,157 7,194
Commercial Real Estate | Purchased credit-impaired | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 228 397
Commercial Real Estate | Purchased credit-impaired | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 12,151 6,167
Commercial Real Estate | Purchased credit-impaired | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 1,537 0
Commercial Real Estate | Retail properties    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 1,602,009 1,506,709
Commercial Real Estate | Retail properties | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 1,582,809 1,473,014
Commercial Real Estate | Retail properties | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 8,297 10,865
Commercial Real Estate | Retail properties | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 10,903 22,830
Commercial Real Estate | Retail properties | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 0 0
Commercial Real Estate | Multi-family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 1,002,839 1,078,218
Commercial Real Estate | Multi-family | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 959,152 1,029,138
Commercial Real Estate | Multi-family | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 28,778 28,862
Commercial Real Estate | Multi-family | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 14,573 19,898
Commercial Real Estate | Multi-family | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 336 320
Commercial Real Estate | Office    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 855,843 894,625
Commercial Real Estate | Office | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 787,401 822,824
Commercial Real Estate | Office | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 34,957 35,350
Commercial Real Estate | Office | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 33,098 36,011
Commercial Real Estate | Office | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 387 440
Commercial Real Estate | Industrial and warehouse    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 492,286 504,167
Commercial Real Estate | Industrial and warehouse | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 469,083 493,402
Commercial Real Estate | Industrial and warehouse | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 4,500 259
Commercial Real Estate | Industrial and warehouse | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 18,703 10,450
Commercial Real Estate | Industrial and warehouse | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 0 56
Commercial Real Estate | Other commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 1,352,018 1,271,174
Commercial Real Estate | Other commercial real estate | Pass    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 1,316,273 1,240,482
Commercial Real Estate | Other commercial real estate | OLEM    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 4,584 4,054
Commercial Real Estate | Other commercial real estate | Substandard    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 30,343 25,811
Commercial Real Estate | Other commercial real estate | Doubtful    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial real estate 818 827
Automobile    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Automobile 10,380,644 9,480,678
Automobile | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Automobile 5,205,064 4,680,684
Automobile | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Automobile 3,779,606 3,454,585
Automobile | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Automobile 1,116,762 1,086,914
Automobile | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Automobile 279,212 258,495
Home Equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 8,447,066 8,470,482
Home Equity | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 5,164,666 5,210,741
Home Equity | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 2,445,121 2,466,425
Home Equity | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 553,889 582,326
Home Equity | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 283,390 210,990
Home Equity | Secured by first-lien    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 5,242,552 5,191,485
Home Equity | Secured by first-lien | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 3,346,422 3,369,657
Home Equity | Secured by first-lien | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 1,463,054 1,441,574
Home Equity | Secured by first-lien | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 264,024 258,328
Home Equity | Secured by first-lien | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 169,052 121,926
Home Equity | Secured by junior-lien    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 3,204,514 3,278,997
Home Equity | Secured by junior-lien | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 1,818,244 1,841,084
Home Equity | Secured by junior-lien | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 982,067 1,024,851
Home Equity | Secured by junior-lien | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 289,865 323,998
Home Equity | Secured by junior-lien | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Home equity 114,338 89,064
Residential Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 6,377,017 5,998,400
Residential Mortgage | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 3,886,743 3,564,064
Residential Mortgage | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 1,848,717 1,813,779
Residential Mortgage | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 523,118 567,984
Residential Mortgage | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 118,439 52,573
Residential Mortgage | Purchased credit-impaired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 1,104 1,454
Residential Mortgage | Purchased credit-impaired | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 320 381
Residential Mortgage | Purchased credit-impaired | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 331 777
Residential Mortgage | Purchased credit-impaired | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 453 296
Residential Mortgage | Purchased credit-impaired | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 0 0
Residential Mortgage | Residential mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 6,375,913 5,996,946
Residential Mortgage | Residential mortgage | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 3,886,423 3,563,683
Residential Mortgage | Residential mortgage | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 1,848,386 1,813,002
Residential Mortgage | Residential mortgage | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 522,665 567,688
Residential Mortgage | Residential mortgage | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Residential mortgage 118,439 52,573
Other Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 644,152 563,054
Other Consumer | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 257,518 233,969
Other Consumer | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 313,712 269,746
Other Consumer | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 59,699 49,650
Other Consumer | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 13,223 9,689
Other Consumer | Purchased credit-impaired    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 0 52
Other Consumer | Purchased credit-impaired | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 0 0
Other Consumer | Purchased credit-impaired | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 0 52
Other Consumer | Purchased credit-impaired | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 0 0
Other Consumer | Purchased credit-impaired | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 0 0
Other Consumer | Other consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 644,152 563,002
Other Consumer | Other consumer | Greater than 750    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 257,518 233,969
Other Consumer | Other consumer | 650-749    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 313,712 269,694
Other Consumer | Other consumer | Less Than 650    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer 59,699 49,650
Other Consumer | Other consumer | Other FICO score    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Other consumer $ 13,223 $ 9,689