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ALLOWANCE FOR LOAN AND LEASE LOSSES - Changes in Allowance for Loan and Lease Losses (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Financing Receivable Allowance For Credit Losses [Line Items]        
Beginning balance $ 240,710 $ 222,395    
Charge-offs (136,928) (176,721)    
Recoveries 15,088 22,991    
Provision (release) 86,733 172,045    
Ending balance 205,603 240,710    
Related Allowance 64,421 52,581 $ 55,205 $ 102,601
Ending balance: purchased credit-impaired loans 6,857 3,962    
Ending balance: general allowance 134,325 184,167    
Ending balance 8,886,873 9,112,382    
Ending balance: impaired loans 887,905 806,509 $ 945,407 $ 919,112
Ending balance: purchased credit-impaired loans 165,818 [1] 173,913 [2]    
Ending balance: loans with general allowance 7,833,150 8,131,960    
Purchased Credit Impaired [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Ending balance: purchased credit-impaired loans [3] 6,857 3,962    
Residential Mortgage [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Beginning balance 39,570 27,301    
Charge-offs (33,621) (19,317)    
Recoveries 2,941 1,209    
Provision (release) 25,090 30,377    
Ending balance 33,980 39,570    
Related Allowance 8,633 21,787    
Ending balance: general allowance 18,715 13,946    
Ending balance 3,296,031 3,344,719    
Ending balance: impaired loans 442,267 460,668    
Ending balance: purchased credit-impaired loans 162,676 170,766    
Ending balance: loans with general allowance 2,691,088 2,713,285    
Residential Mortgage [Member] | Purchased Credit Impaired [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Ending balance: purchased credit-impaired loans [3] 6,632 3,837    
Commercial Mortgage Loans [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Beginning balance 68,211 50,894    
Charge-offs (20,454) (56,101)    
Recoveries 816 6,534    
Provision (release) 8,688 66,884    
Ending balance 57,261 68,211    
Related Allowance 26,172 3,073    
Ending balance: general allowance 30,864 65,013    
Ending balance 1,568,808 1,537,806    
Ending balance: impaired loans 194,391 81,527    
Ending balance: purchased credit-impaired loans 3,142 3,147    
Ending balance: loans with general allowance 1,371,275 1,453,132    
Commercial Mortgage Loans [Member] | Purchased Credit Impaired [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Ending balance: purchased credit-impaired loans [3] 225 125    
Commercial And Industrial Loans [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Beginning balance 68,768 63,721    
Charge-offs (26,579) (33,844)    
Recoveries 2,689 4,316    
Provision (release) 17,075 34,575    
Ending balance 61,953 68,768    
Related Allowance 22,638 18,096    
Ending balance: general allowance 39,315 50,672    
Ending balance 2,180,455 2,246,513    
Ending balance: impaired loans 153,543 170,706    
Ending balance: purchased credit-impaired loans 0 0    
Ending balance: loans with general allowance 2,026,912 2,075,807    
Commercial And Industrial Loans [Member] | Purchased Credit Impaired [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Ending balance: purchased credit-impaired loans [3] 0 0    
Construction Loans [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Beginning balance 3,519 12,822    
Charge-offs (1,770) (4,994)    
Recoveries 316 2,582    
Provision (release) 497 (6,891)    
Ending balance 2,562 3,519    
Related Allowance 1,405 1,202    
Ending balance: general allowance 1,157 2,317    
Ending balance 124,951 156,195    
Ending balance: impaired loans 53,291 53,516    
Ending balance: purchased credit-impaired loans 0 0    
Ending balance: loans with general allowance 71,660 102,679    
Construction Loans [Member] | Purchased Credit Impaired [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Ending balance: purchased credit-impaired loans [3] 0 0    
Consumer Loan [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Beginning balance 60,642 67,657    
Charge-offs (54,504) (62,465)    
Recoveries 8,326 8,350    
Provision (release) 35,383 47,100    
Ending balance 49,847 60,642    
Related Allowance 5,573 8,423    
Ending balance: general allowance 44,274 52,219    
Ending balance 1,716,628 1,827,149    
Ending balance: impaired loans 44,413 40,092    
Ending balance: purchased credit-impaired loans 0 0    
Ending balance: loans with general allowance 1,672,215 1,787,057    
Consumer Loan [Member] | Purchased Credit Impaired [Member]        
Financing Receivable Allowance For Credit Losses [Line Items]        
Ending balance: purchased credit-impaired loans [3] $ 0 $ 0    
[1]
According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage and commercial mortgage loans are considered past due when the borrower is in arrears two or more monthly payments. PCI residential mortgage loans and commercial mortgage loans past due 30-59 days as of December 31, 2016 amounted to $22.3 million and $0.1 million, respectively.
[2]
According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage and commercial mortgage loans are considered past due when the borrower is in arrears two or more monthly payments. PCI residential mortgage loans past due 30-59 days as of December 31, 2015 amounted to $23.6 million.
[3]
Refer to Note 8 - Loans Held for Investment - PCI Loans for a detail of changes in the allowance for loan losses related to PCI loans.