Quarterly report pursuant to Section 13 or 15(d)

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - NALs Past Due (Details)

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LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - NALs Past Due (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due $ 709,080 $ 718,203
Current 67,714,036 66,059,094
Purchased Credit Impaired 64,989 102,380
Consumer loans 99,191 82,319
Loans and leases [1] 68,587,296 66,961,996
90 or more days past due and accruing 118,669 129,362
30-59 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 325,359 320,341
60-89 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 101,627 108,443
90 or more days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 282,094 289,419
Commercial | Commercial and Industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 124,994 136,362
Current 27,295,744 27,854,012
Purchased Credit Impaired 48,606 68,338
Consumer loans 0 0
Loans and leases 27,469,344 28,058,712
90 or more days past due and accruing 14,083 18,148
Commercial | Commercial and Industrial | 30-59 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 36,505 42,052
Commercial | Commercial and Industrial | 60-89 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 10,654 20,136
Commercial | Commercial and Industrial | 90 or more days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 77,835 74,174
Commercial | Real Estate Loan [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 58,040 54,048
Current 7,131,673 7,212,811
Purchased Credit Impaired 16,383 34,042
Consumer loans 0 0
Loans and leases 7,206,096 7,300,901
90 or more days past due and accruing 9,550 17,215
Commercial | Real Estate Loan [Member] | 30-59 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 35,444 21,187
Commercial | Real Estate Loan [Member] | 60-89 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 2,586 3,202
Commercial | Real Estate Loan [Member] | 90 or more days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 20,010 29,659
Consumer | Automobile    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 107,073 103,913
Current 11,767,782 10,862,715
Purchased Credit Impaired 0 0
Consumer loans 1,178 2,154
Loans and leases 11,876,033 10,968,782
90 or more days past due and accruing 10,239 10,182
Consumer | Automobile | 30-59 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 79,457 76,283
Consumer | Automobile | 60-89 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 17,167 17,188
Consumer | Automobile | 90 or more days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 10,449 10,442
Consumer | Home Equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 125,096 115,804
Current 9,857,359 9,986,697
Purchased Credit Impaired 0 0
Consumer loans 2,273 3,273
Loans and leases 9,984,728 10,105,774
90 or more days past due and accruing 16,150 11,508
Consumer | Home Equity | 30-59 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 41,748 38,899
Consumer | Home Equity | 60-89 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 19,601 23,903
Consumer | Home Equity | 90 or more days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 63,747 53,002
Consumer | Residential Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 260,930 276,611
Current 8,260,742 7,373,414
Purchased Credit Impaired 0 0
Consumer loans 94,387 74,936
Loans and leases 8,616,059 7,724,961
90 or more days past due and accruing 62,832 66,952
Consumer | Residential Mortgage | 30-59 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 111,722 122,469
Consumer | Residential Mortgage | 60-89 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 45,041 37,460
Consumer | Residential Mortgage | 90 or more days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 104,167 116,682
Consumer | RV and Marine FInance    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 14,621 13,805
Current 2,355,309 1,831,123
Purchased Credit Impaired 0 0
Consumer loans 1,135 1,519
Loans and leases 2,371,065 1,846,447
90 or more days past due and accruing 2,063 1,462
Consumer | RV and Marine FInance | 30-59 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 10,303 10,009
Consumer | RV and Marine FInance | 60-89 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 2,184 2,230
Consumer | RV and Marine FInance | 90 or more days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 2,134 1,566
Consumer | Other Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 18,326 17,660
Current 1,045,427 938,322
Purchased Credit Impaired 0 0
Consumer loans 218 437
Loans and leases 1,063,971 956,419
90 or more days past due and accruing 3,752 3,895
Consumer | Other Consumer | 30-59 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 10,180 9,442
Consumer | Other Consumer | 60-89 Days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due 4,394 4,324
Consumer | Other Consumer | 90 or more days    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past Due $ 3,752 $ 3,894
[1] Amounts represent loans for which Huntington has elected the fair value option.