LOAN PORTFOLIO - Loan Restructuring and Effect on Allowance for Loan and Lease Losses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 701,143	[1]		$ 701,143	[1]		$ 628,233	$ 630,258	[2]
Charges to the provision for loan losses	26,999		22,195	85,658		220,782
Allowance for loan losses at the end of the period	225,434			225,434				285,858
Loans Split [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	59,764		90,914	59,764		90,914
Amount charged-off				(7,732)		25,389
Charges to the provision for loan losses				(8,719)		567
Allowance for loan losses at the end of the period	575		1,588	575		1,588
Accrual [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 485,083			$ 485,083				$ 425,383

[1]  Excludes TDRs held for sale amounting to $45.7 million as of September 30, 2014

[2]  Excludes TDRs held for sale amounting to $45.9 million as of December 31, 2013.