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Disclosures related to loans individually evaluated for impairment (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Financing Receivable, Impaired [Line Items]    
Recorded Investment $ 1,344,253 $ 1,302,819
Impaired Financing Receivable Unpaid Principal Balance 1,591,155 1,537,044
Related Allowance 108,545 86,072
Covered Under Loss Sharing Agreements With F D I C [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment   76,798
Impaired Financing Receivable Unpaid Principal Balance   76,798
Related Allowance   27,086
Impaired Financing Receivables With No Related Allowance [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 570,276 594,073
Impaired Financing Receivable Unpaid Principal Balance 788,505 800,681
Impaired Financing Receivables With No Related Allowance [Member] | Covered Under Loss Sharing Agreements With F D I C [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment   1,000
Impaired Financing Receivable Unpaid Principal Balance   1,000
PUERTO RICO
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 1,076,986 1,006,666
Impaired Financing Receivable Unpaid Principal Balance 1,250,590 1,172,295
Related Allowance 91,944 70,434
PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 85,855  
Impaired Financing Receivable Unpaid Principal Balance 85,855 76,798
Related Allowance   27,086
PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 373,421 355,964
Impaired Financing Receivable Unpaid Principal Balance 519,492 494,305
PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Covered Under Loss Sharing Agreements With F D I C [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,180 1,000
Impaired Financing Receivable Unpaid Principal Balance 4,180 1,000
UNITED STATES
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 267,267  
Impaired Financing Receivable Unpaid Principal Balance 340,565  
Related Allowance 16,601  
UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 196,855  
Impaired Financing Receivable Unpaid Principal Balance 269,013  
Impaired Financing Receivables With Related Allowance [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 773,977 708,746
Impaired Financing Receivable Unpaid Principal Balance 802,650 736,363
Related Allowance 108,545 86,072
Impaired Financing Receivables With Related Allowance [Member] | Covered Under Loss Sharing Agreements With F D I C [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment   75,798
Impaired Financing Receivable Unpaid Principal Balance   75,798
Related Allowance   27,086
Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 703,565 650,702
Impaired Financing Receivable Unpaid Principal Balance 731,098 677,990
Related Allowance 91,944 70,434
Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 81,675 75,798
Impaired Financing Receivable Unpaid Principal Balance 81,675 75,798
Related Allowance 32,489 27,086
Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 70,412  
Impaired Financing Receivable Unpaid Principal Balance 71,552  
Related Allowance 16,601  
Non Covered Loans [Member] | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 20,491 31,324
Impaired Financing Receivable Unpaid Principal Balance 30,927 44,178
Related Allowance 0 575
Non Covered Loans [Member] | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 127,872 113,843
Impaired Financing Receivable Unpaid Principal Balance 161,196 139,689
Related Allowance 3,579 1,050
Non Covered Loans [Member] | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 241,787 250,921
Impaired Financing Receivable Unpaid Principal Balance 313,903 319,562
Related Allowance 4,053 3,212
Non Covered Loans [Member] | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 162,002 160,241
Impaired Financing Receivable Unpaid Principal Balance 210,159 200,664
Related Allowance 5,366 6,901
Non Covered Loans [Member] | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 64,149 91,710
Impaired Financing Receivable Unpaid Principal Balance 120,918 148,162
Related Allowance 1,013 289
Non Covered Loans [Member] | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 450,754 382,880
Impaired Financing Receivable Unpaid Principal Balance 451,263 386,545
Related Allowance 40,946 29,063
Non Covered Loans [Member] | Legacy [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 47,731 48,890
Impaired Financing Receivable Unpaid Principal Balance 73,322 75,234
Related Allowance 765 57
Non Covered Loans [Member] | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 5,412 6,104
Impaired Financing Receivable Unpaid Principal Balance 5,412 6,104
Related Allowance 1,344 793
Non Covered Loans [Member] | Consumer Loan [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 85,855  
Impaired Financing Receivable Unpaid Principal Balance 85,855  
Related Allowance 32,489  
Non Covered Loans [Member] | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 39,045 38,874
Impaired Financing Receivable Unpaid Principal Balance 39,045 38,874
Related Allowance 1,973 2,151
Non Covered Loans [Member] | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 92,042 93,760
Impaired Financing Receivable Unpaid Principal Balance 92,042 93,760
Related Allowance 16,208 14,115
Non Covered Loans [Member] | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 93
Impaired Financing Receivable Unpaid Principal Balance 0 93
Related Allowance 0 6
Non Covered Loans [Member] | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 7,113 7,381
Impaired Financing Receivable Unpaid Principal Balance 7,113 7,381
Related Allowance 809 774
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 20,348 20,861
Impaired Financing Receivable Unpaid Principal Balance 30,784 33,715
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 100,436 106,628
Impaired Financing Receivable Unpaid Principal Balance 131,976 131,377
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 203,798 212,148
Impaired Financing Receivable Unpaid Principal Balance 263,565 271,517
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 118,901 110,557
Impaired Financing Receivable Unpaid Principal Balance 162,262 138,094
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 59,433 90,038
Impaired Financing Receivable Unpaid Principal Balance 111,731 145,793
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 25,755 9,964
Impaired Financing Receivable Unpaid Principal Balance 20,991 9,964
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Legacy [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 37,425 42,877
Impaired Financing Receivable Unpaid Principal Balance 63,016 69,221
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,180  
Impaired Financing Receivable Unpaid Principal Balance 4,180  
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | PUERTO RICO | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 8,772 22,669
Impaired Financing Receivable Unpaid Principal Balance 13,178 31,775
Related Allowance 0 575
Non Covered Loans [Member] | PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 62,527 51,426
Impaired Financing Receivable Unpaid Principal Balance 67,741 54,445
Related Allowance 1,988 836
Non Covered Loans [Member] | PUERTO RICO | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 200,222 203,279
Impaired Financing Receivable Unpaid Principal Balance 262,812 262,094
Related Allowance 4,053 2,757
Non Covered Loans [Member] | PUERTO RICO | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 130,576 125,715
Impaired Financing Receivable Unpaid Principal Balance 172,555 163,404
Related Allowance 5,074 6,239
Non Covered Loans [Member] | PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 51,023 49,747
Impaired Financing Receivable Unpaid Principal Balance 105,852 103,411
Related Allowance 1,013 289
Non Covered Loans [Member] | PUERTO RICO | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 396,854 333,346
Impaired Financing Receivable Unpaid Principal Balance 401,440 336,682
Related Allowance 27,096 14,944
Non Covered Loans [Member] | PUERTO RICO | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 5,412 6,104
Impaired Financing Receivable Unpaid Principal Balance 5,412 6,104
Related Allowance 1,344 793
Non Covered Loans [Member] | PUERTO RICO | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 39,045 38,874
Impaired Financing Receivable Unpaid Principal Balance 39,045 38,874
Related Allowance 1,973 2,151
Non Covered Loans [Member] | PUERTO RICO | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | PUERTO RICO | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 92,042 93,760
Impaired Financing Receivable Unpaid Principal Balance 92,042 93,760
Related Allowance 16,208 14,115
Non Covered Loans [Member] | PUERTO RICO | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | PUERTO RICO | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,658 4,948
Impaired Financing Receivable Unpaid Principal Balance 4,658 4,948
Related Allowance 706 649
Non Covered Loans [Member] | PUERTO RICO | Covered Under Loss Sharing Agreements With F D I C [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment   76,798
Related Allowance 32,489  
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 8,629 12,206
Impaired Financing Receivable Unpaid Principal Balance 13,035 21,312
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 39,455 45,517
Impaired Financing Receivable Unpaid Principal Balance 43,338 47,439
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 162,233 165,745
Impaired Financing Receivable Unpaid Principal Balance 212,474 215,288
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 91,626 83,421
Impaired Financing Receivable Unpaid Principal Balance 128,809 108,224
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 46,307 48,075
Impaired Financing Receivable Unpaid Principal Balance 96,665 101,042
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 20,991 0
Impaired Financing Receivable Unpaid Principal Balance 20,991 0
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | PUERTO RICO | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | UNITED STATES
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment   296,153
Impaired Financing Receivable Unpaid Principal Balance   364,749
Related Allowance   15,638
Non Covered Loans [Member] | UNITED STATES | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 11,719 8,655
Impaired Financing Receivable Unpaid Principal Balance 17,749 12,403
Related Allowance 0 0
Non Covered Loans [Member] | UNITED STATES | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 65,345 62,417
Impaired Financing Receivable Unpaid Principal Balance 93,455 85,244
Related Allowance 1,591 214
Non Covered Loans [Member] | UNITED STATES | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 41,565 47,642
Impaired Financing Receivable Unpaid Principal Balance 51,091 57,468
Related Allowance 0 455
Non Covered Loans [Member] | UNITED STATES | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 31,426 34,526
Impaired Financing Receivable Unpaid Principal Balance 37,604 37,260
Related Allowance 292 662
Non Covered Loans [Member] | UNITED STATES | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 13,126 41,963
Impaired Financing Receivable Unpaid Principal Balance 15,066 44,751
Related Allowance 0 0
Non Covered Loans [Member] | UNITED STATES | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 53,900 49,534
Impaired Financing Receivable Unpaid Principal Balance 49,823 49,863
Related Allowance 13,850 14,119
Non Covered Loans [Member] | UNITED STATES | Legacy [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 47,731 48,890
Impaired Financing Receivable Unpaid Principal Balance 73,322 75,234
Related Allowance 765 57
Non Covered Loans [Member] | UNITED STATES | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | UNITED STATES | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | UNITED STATES | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | UNITED STATES | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | UNITED STATES | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 93
Impaired Financing Receivable Unpaid Principal Balance 0 93
Related Allowance 0 6
Non Covered Loans [Member] | UNITED STATES | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 2,455 2,433
Impaired Financing Receivable Unpaid Principal Balance 2,455 2,433
Related Allowance 103 125
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment   238,109
Impaired Financing Receivable Unpaid Principal Balance   306,376
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 11,719 8,655
Impaired Financing Receivable Unpaid Principal Balance 17,749 12,403
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 60,981 61,111
Impaired Financing Receivable Unpaid Principal Balance 88,638 83,938
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 41,565 46,403
Impaired Financing Receivable Unpaid Principal Balance 51,091 56,229
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 27,275 27,136
Impaired Financing Receivable Unpaid Principal Balance 33,453 29,870
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 13,126 41,963
Impaired Financing Receivable Unpaid Principal Balance 15,066 44,751
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,764 9,964
Impaired Financing Receivable Unpaid Principal Balance 0 9,964
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Legacy [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 37,425 42,877
Impaired Financing Receivable Unpaid Principal Balance 63,016 69,221
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | UNITED STATES | Impaired Financing Receivables With No Related Allowance [Member] | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 143 10,463
Impaired Financing Receivable Unpaid Principal Balance 143 10,463
Related Allowance 0 575
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 27,436 7,215
Impaired Financing Receivable Unpaid Principal Balance 29,220 8,312
Related Allowance 3,579 1,050
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 37,989 38,773
Impaired Financing Receivable Unpaid Principal Balance 50,338 48,045
Related Allowance 4,053 3,212
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 43,101 49,684
Impaired Financing Receivable Unpaid Principal Balance 47,897 62,570
Related Allowance 5,366 6,901
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,716 1,672
Impaired Financing Receivable Unpaid Principal Balance 9,187 2,369
Related Allowance 1,013 289
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 424,999 372,916
Impaired Financing Receivable Unpaid Principal Balance 430,272 376,581
Related Allowance 40,946 29,063
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Legacy [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 10,306 6,013
Impaired Financing Receivable Unpaid Principal Balance 10,306 6,013
Related Allowance 765 57
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 5,412 6,104
Impaired Financing Receivable Unpaid Principal Balance 5,412 6,104
Related Allowance 1,344 793
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Consumer Loan [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 81,675  
Impaired Financing Receivable Unpaid Principal Balance 81,675  
Related Allowance 32,489  
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 39,045 38,874
Impaired Financing Receivable Unpaid Principal Balance 39,045 38,874
Related Allowance 1,973 2,151
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 92,042 93,760
Impaired Financing Receivable Unpaid Principal Balance 92,042 93,760
Related Allowance 16,208 14,115
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 93
Impaired Financing Receivable Unpaid Principal Balance 0 93
Related Allowance 0 6
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 7,113 7,381
Impaired Financing Receivable Unpaid Principal Balance 7,113 7,381
Related Allowance 809 774
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 143 10,463
Impaired Financing Receivable Unpaid Principal Balance 143 10,463
Related Allowance 0 575
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 23,072 5,909
Impaired Financing Receivable Unpaid Principal Balance 24,403 7,006
Related Allowance 1,988 836
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 37,989 37,534
Impaired Financing Receivable Unpaid Principal Balance 50,338 46,806
Related Allowance 4,053 2,757
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 38,950 42,294
Impaired Financing Receivable Unpaid Principal Balance 43,746 55,180
Related Allowance 5,074 6,239
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,716 1,672
Impaired Financing Receivable Unpaid Principal Balance 9,187 2,369
Related Allowance 1,013 289
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 375,863 333,346
Impaired Financing Receivable Unpaid Principal Balance 380,449 336,682
Related Allowance 27,096 14,944
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 5,412 6,104
Impaired Financing Receivable Unpaid Principal Balance 5,412 6,104
Related Allowance 1,344 793
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 39,045 38,874
Impaired Financing Receivable Unpaid Principal Balance 39,045 38,874
Related Allowance 1,973 2,151
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 92,042 93,760
Impaired Financing Receivable Unpaid Principal Balance 92,042 93,760
Related Allowance 16,208 14,115
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | PUERTO RICO | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,658 4,948
Impaired Financing Receivable Unpaid Principal Balance 4,658 4,948
Related Allowance 706 649
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment   58,044
Impaired Financing Receivable Unpaid Principal Balance   58,373
Related Allowance   15,638
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Commercial Multi Family [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Commercial Real Estate Non Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,364 1,306
Impaired Financing Receivable Unpaid Principal Balance 4,817 1,306
Related Allowance 1,591 214
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Commercial Real Estate Owner Occupied [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 1,239
Impaired Financing Receivable Unpaid Principal Balance 0 1,239
Related Allowance 0 455
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Commercial And Industrial Loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 4,151 7,390
Impaired Financing Receivable Unpaid Principal Balance 4,151 7,390
Related Allowance 292 662
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Commercial Real Estate Construction Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Mortgages
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 49,136 39,570
Impaired Financing Receivable Unpaid Principal Balance 49,823 39,899
Related Allowance 13,850 14,119
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Legacy [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 10,306 6,013
Impaired Financing Receivable Unpaid Principal Balance 10,306 6,013
Related Allowance 765 57
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Finance Leases Portfolio Segment Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Consumer Loan [Member] | Consumer Credit Card Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Consumer Loan [Member] | Home Equity Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Consumer Loan [Member] | Personal [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 0
Impaired Financing Receivable Unpaid Principal Balance 0 0
Related Allowance 0 0
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Consumer Loan [Member] | Consumer Loans Auto Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 0 93
Impaired Financing Receivable Unpaid Principal Balance 0 93
Related Allowance 0 6
Non Covered Loans [Member] | Impaired Financing Receivables With Related Allowance [Member] | UNITED STATES | Consumer Loan [Member] | Consumer Other Financing Receivable Member
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 2,455 2,433
Impaired Financing Receivable Unpaid Principal Balance 2,455 2,433
Related Allowance $ 103 $ 125