Allowance Movement (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	$ 601,792	$ 640,555
Provision for loan losses	40,035	73,072
Charge-offs	(81,815)	(112,773)
Recoveries	26,005	39,494
Net write-down related to loans sold	2,680
Balance at end of period	588,697	640,348
Segment, Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan losses	40,035	79,836
Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			519,719
Balance at end of period	516,224		519,719
Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			82,073
Balance at end of period	72,473		82,073
PUERTO RICO
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			571,208
Balance at end of period	556,749		571,208
PUERTO RICO | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	489,135	426,775
Provision for loan losses	31,913	53,915
Charge-offs	(51,481)	(61,422)
Recoveries	14,709	15,472
Balance at end of period	484,276	434,740
PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	82,073	102,092
Provision for loan losses	10,324	25,714
Charge-offs	(26,671)	(32,310)
Recoveries	6,747	2,277
Balance at end of period	72,473	97,773
UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			30,584
Balance at end of period	31,948		30,584
UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	30,584	82,283
Provision for loan losses	(2,202)	207
Allowance transferred from discontinued operations		7,984
Charge-offs	(3,663)	(14,589)
Recoveries	4,549	11,748
Net write-down related to loans sold	2,680
Balance at end of period	31,948	87,633
UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period		29,405
Provision for loan losses		(6,764)
Allowance Transferred To Continuing Operations		(7,984)
Charge-offs		(4,452)
Recoveries		9,997
Balance at end of period		20,202
Commercial Portfolio Segment Member
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	242,108	217,180
Provision for loan losses	973	12,943
Charge-offs	(24,261)	(38,071)
Recoveries	8,339	18,551
Net write-down related to loans sold	0
Balance at end of period	227,159	210,603
Commercial Portfolio Segment Member | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			211,237
Balance at end of period	205,892		211,237
Commercial Portfolio Segment Member | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			30,871
Balance at end of period	21,267		30,871
Commercial Portfolio Segment Member | PUERTO RICO
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			232,460
Balance at end of period	216,733		232,460
Commercial Portfolio Segment Member | PUERTO RICO | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	201,589	128,150
Provision for loan losses	(1,321)	11,157
Charge-offs	(9,572)	(22,117)
Recoveries	4,770	6,944
Balance at end of period	195,466	124,134
Commercial Portfolio Segment Member | PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	30,871	42,198
Provision for loan losses	1,995	4,039
Charge-offs	(14,239)	(7,968)
Recoveries	2,640	320
Balance at end of period	21,267	38,589
Commercial Portfolio Segment Member | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			9,648
Balance at end of period	10,426		9,648
Commercial Portfolio Segment Member | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	9,648	24,930
Provision for loan losses	299	578
Allowance transferred from discontinued operations		7,984
Charge-offs	(450)	(4,991)
Recoveries	929	3,004
Net write-down related to loans sold	0
Balance at end of period	10,426	31,505
Commercial Portfolio Segment Member | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period		21,902
Provision for loan losses		(2,831)
Allowance Transferred To Continuing Operations		(7,984)
Charge-offs		(2,995)
Recoveries		8,283
Balance at end of period		16,375
Commercial Real Estate Construction Financing Receivable Member
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	13,872	24,833
Provision for loan losses	125	15,753
Charge-offs	(9,046)	(23,397)
Recoveries	6,200	4,079
Net write-down related to loans sold	0
Balance at end of period	11,151	21,268
Commercial Real Estate Construction Financing Receivable Member | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			6,670
Balance at end of period	3,444		6,670
Commercial Real Estate Construction Financing Receivable Member | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			7,202
Balance at end of period	7,707		7,202
Commercial Real Estate Construction Financing Receivable Member | PUERTO RICO
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			12,685
Balance at end of period	9,302		12,685
Commercial Real Estate Construction Financing Receivable Member | PUERTO RICO | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	5,483	5,095
Provision for loan losses	(6,813)	(1,394)
Charge-offs	0	(416)
Recoveries	2,925	1,794
Balance at end of period	1,595	5,079
Commercial Real Estate Construction Financing Receivable Member | PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	7,202	19,491
Provision for loan losses	6,276	17,567
Charge-offs	(9,046)	(22,981)
Recoveries	3,275	1,889
Balance at end of period	7,707	15,966
Commercial Real Estate Construction Financing Receivable Member | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			1,187
Balance at end of period	1,849		1,187
Commercial Real Estate Construction Financing Receivable Member | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	1,187	214
Provision for loan losses	662	(194)
Allowance transferred from discontinued operations		0
Charge-offs	0	0
Recoveries	0	176
Net write-down related to loans sold	0
Balance at end of period	1,849	196
Commercial Real Estate Construction Financing Receivable Member | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period		33
Provision for loan losses		(226)
Allowance Transferred To Continuing Operations		0
Charge-offs		0
Recoveries		220
Balance at end of period		27
Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	164,270	192,935
Provision for loan losses	12,867	19,918
Charge-offs	(14,580)	(11,920)
Recoveries	672	878
Net write-down related to loans sold	6,081
Balance at end of period	169,310	201,811
Mortgages [Member] | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			123,322
Balance at end of period	128,841		123,322
Mortgages [Member] | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			40,948
Balance at end of period	40,469		40,948
Mortgages [Member] | PUERTO RICO
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			161,808
Balance at end of period	167,048		161,808
Mortgages [Member] | PUERTO RICO | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	120,860	130,330
Provision for loan losses	16,192	15,982
Charge-offs	(10,973)	(8,726)
Recoveries	500	210
Balance at end of period	126,579	137,796
Mortgages [Member] | PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	40,948	36,006
Provision for loan losses	2,802	4,498
Charge-offs	(3,386)	(1,656)
Recoveries	105	0
Balance at end of period	40,469	38,848
Mortgages [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			2,462
Balance at end of period	2,262		2,462
Mortgages [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	2,462	26,599
Provision for loan losses	(6,127)	(562)
Allowance transferred from discontinued operations		0
Charge-offs	(221)	(1,538)
Recoveries	67	668
Net write-down related to loans sold	6,081
Balance at end of period	2,262	25,167
Mortgages [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period		0
Provision for loan losses		0
Allowance Transferred To Continuing Operations		0
Charge-offs		0
Recoveries		0
Balance at end of period		0
Legacy [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	2,944	13,704
Provision for loan losses	(1,810)	(5,484)
Charge-offs	(474)	(3,541)
Recoveries	2,302	8,593
Net write-down related to loans sold	0
Balance at end of period	2,962	13,272
Legacy [Member] | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			2,944
Balance at end of period	2,962		2,944
Legacy [Member] | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			0
Balance at end of period	0		0
Legacy [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			2,944
Balance at end of period	2,962		2,944
Legacy [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	2,944	11,335
Provision for loan losses	(1,810)	(3,672)
Allowance transferred from discontinued operations		0
Charge-offs	(474)	(2,984)
Recoveries	2,302	7,193
Net write-down related to loans sold	0
Balance at end of period	2,962	11,872
Legacy [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period		2,369
Provision for loan losses		(1,812)
Allowance Transferred To Continuing Operations		0
Charge-offs		(557)
Recoveries		1,400
Balance at end of period		1,400
Finance Leases Portfolio Segment Member
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	7,131	10,622
Provision for loan losses	846	517
Charge-offs	(1,237)	(967)
Recoveries	468	311
Net write-down related to loans sold	0
Balance at end of period	7,208	10,483
Finance Leases Portfolio Segment Member | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			7,131
Balance at end of period	7,208		7,131
Finance Leases Portfolio Segment Member | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			0
Balance at end of period	0		0
Finance Leases Portfolio Segment Member | PUERTO RICO
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			7,131
Balance at end of period	7,208		7,131
Finance Leases Portfolio Segment Member | PUERTO RICO | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	7,131	10,622
Provision for loan losses	846	517
Charge-offs	(1,237)	(967)
Recoveries	468	311
Balance at end of period	7,208	10,483
Finance Leases Portfolio Segment Member | PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	0	0
Provision for loan losses	0	0
Charge-offs	0	0
Recoveries	0	0
Balance at end of period	0	0
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	171,467	181,281
Provision for loan losses	27,034	29,425
Charge-offs	(32,217)	(34,877)
Recoveries	8,024	7,082
Net write-down related to loans sold	(3,401)
Balance at end of period	170,907	182,911
Consumer [Member] | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			168,415
Balance at end of period	167,877		168,415
Consumer [Member] | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			3,052
Balance at end of period	3,030		3,052
Consumer [Member] | PUERTO RICO
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			157,124
Balance at end of period	156,458		157,124
Consumer [Member] | PUERTO RICO | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	154,072	152,578
Provision for loan losses	23,009	27,653
Charge-offs	(29,699)	(29,196)
Recoveries	6,046	6,213
Balance at end of period	153,428	157,248
Consumer [Member] | PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	3,052	4,397
Provision for loan losses	(749)	(390)
Charge-offs	0	295
Recoveries	727	68
Balance at end of period	3,030	4,370
Consumer [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period			14,343
Balance at end of period	14,449		14,343
Consumer [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Continuing Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	14,343	19,205
Provision for loan losses	4,774	4,057
Allowance transferred from discontinued operations		0
Charge-offs	(2,518)	(5,076)
Recoveries	1,251	707
Net write-down related to loans sold	(3,401)
Balance at end of period	14,449	18,893
Consumer [Member] | UNITED STATES | Non Covered Under Loss Sharing Agreements With F D I C [Member] | Segment, Discontinued Operations [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period		5,101
Provision for loan losses		(1,895)
Allowance Transferred To Continuing Operations		0
Charge-offs		(900)
Recoveries		94
Balance at end of period		$ 2,400