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Credit quality indicators of non-covered loans held-in-portfolio based obligor risk ratings (Detail)
$ in Thousands
Sep. 30, 2015
USD ($)
Dec. 31, 2014
USD ($)
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [1] $ 22,498,066 $ 19,404,451
Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 920,421 878,507
Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 858,785 693,008
Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,830,498 1,116,882
Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,891 4,444
Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,896 4,581
Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,616,491 2,697,422
Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 18,881,575 16,707,029
Commercial Multi Family [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 784,641 487,280
Commercial Multi Family [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 17,355 13,589
Commercial Multi Family [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 8,531 11,839
Commercial Multi Family [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 8,619 16,839
Commercial Multi Family [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Commercial Multi Family [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Commercial Multi Family [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 34,505 42,267
Commercial Multi Family [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 750,136 445,013
Commercial Real Estate Non Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,629,669 2,526,146
Commercial Real Estate Non Owner Occupied [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 333,233 189,195
Commercial Real Estate Non Owner Occupied [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 446,939 152,849
Commercial Real Estate Non Owner Occupied [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 475,406 183,346
Commercial Real Estate Non Owner Occupied [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Commercial Real Estate Non Owner Occupied [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Commercial Real Estate Non Owner Occupied [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,255,578 525,390
Commercial Real Estate Non Owner Occupied [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,374,091 2,000,756
Commercial Real Estate Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,080,668 1,667,267
Commercial Real Estate Owner Occupied [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 329,236 236,520
Commercial Real Estate Owner Occupied [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 166,500 149,243
Commercial Real Estate Owner Occupied [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 476,205 310,686
Commercial Real Estate Owner Occupied [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,258 3,595
Commercial Real Estate Owner Occupied [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Commercial Real Estate Owner Occupied [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 974,199 700,044
Commercial Real Estate Owner Occupied [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,106,469 967,223
Commercial And Industrial Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,635,446 3,453,574
Commercial And Industrial Loans [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 222,926 426,689
Commercial And Industrial Loans [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 161,469 370,382
Commercial And Industrial Loans [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 507,681 280,868
Commercial And Industrial Loans [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 633 849
Commercial And Industrial Loans [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 98 255
Commercial And Industrial Loans [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 892,807 1,079,043
Commercial And Industrial Loans [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,742,639 2,374,531
Commercial Portfolio Segment Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 10,130,424 8,134,267
Commercial Portfolio Segment Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 902,750 865,993
Commercial Portfolio Segment Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 783,439 684,313
Commercial Portfolio Segment Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,467,911 791,739
Commercial Portfolio Segment Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,891 4,444
Commercial Portfolio Segment Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 98 255
Commercial Portfolio Segment Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,157,089 2,346,744
Commercial Portfolio Segment Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 6,973,335 5,787,523
Commercial Real Estate Construction Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 692,492 251,820
Commercial Real Estate Construction Financing Receivable Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 5,573 4,612
Commercial Real Estate Construction Financing Receivable Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 65,816 6,204
Commercial Real Estate Construction Financing Receivable Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 34,555 16,908
Commercial Real Estate Construction Financing Receivable Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Commercial Real Estate Construction Financing Receivable Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Commercial Real Estate Construction Financing Receivable Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 105,944 27,724
Commercial Real Estate Construction Financing Receivable Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 586,548 224,096
Mortgages [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 7,165,479 6,502,886
Mortgages [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,640 0
Mortgages [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 6,003 0
Mortgages [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 260,062 241,780
Mortgages [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Mortgages [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Mortgages [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 269,705 241,780
Mortgages [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 6,895,774 6,261,106
Legacy [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [2] 67,974 80,818
Legacy [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 6,970 7,902
Legacy [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,974 2,491
Legacy [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 7,002 9,204
Legacy [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Legacy [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Legacy [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 15,946 19,597
Legacy [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 52,028 61,221
Finance Leases Portfolio Segment Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 606,927 564,389
Finance Leases Portfolio Segment Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Finance Leases Portfolio Segment Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Finance Leases Portfolio Segment Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,014 3,102
Finance Leases Portfolio Segment Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Finance Leases Portfolio Segment Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 77 0
Finance Leases Portfolio Segment Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,091 3,102
Finance Leases Portfolio Segment Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 603,836 561,287
Consumer [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,834,770 3,870,271
Consumer [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,488 0
Consumer [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,553 0
Consumer [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 57,954 54,149
Consumer [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,721 4,326
Consumer [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 64,716 58,475
Consumer [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,770,054 3,811,796
Consumer Credit Card Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,135,510 1,155,229
Consumer Credit Card Financing Receivable [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Credit Card Financing Receivable [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Credit Card Financing Receivable [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 19,092 21,070
Consumer Credit Card Financing Receivable [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Credit Card Financing Receivable [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Credit Card Financing Receivable [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 19,092 21,070
Consumer Credit Card Financing Receivable [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,116,418 1,134,159
Home Equity Line of Credit [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 326,559 366,162
Home Equity Line of Credit [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Home Equity Line of Credit [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Home Equity Line of Credit [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,493 10,643
Home Equity Line of Credit [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Home Equity Line of Credit [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,657 1,639
Home Equity Line of Credit [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 4,150 12,282
Home Equity Line of Credit [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 322,409 353,880
Personal [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,377,131 1,375,452
Personal [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,488 0
Personal [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,553 0
Personal [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 23,765 8,951
Personal [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Personal [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 525 912
Personal [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 27,331 9,863
Personal [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,349,800 1,365,589
Consumer Loans Auto Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 805,063 767,369
Consumer Loans Auto Financing Receivable [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Loans Auto Financing Receivable [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Loans Auto Financing Receivable [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 11,834 11,348
Consumer Loans Auto Financing Receivable [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Loans Auto Financing Receivable [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 82 40
Consumer Loans Auto Financing Receivable [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 11,916 11,388
Consumer Loans Auto Financing Receivable [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 793,147 755,981
Consumer Other Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 190,507 206,059
Consumer Other Financing Receivable Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Other Financing Receivable Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Other Financing Receivable Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,770 2,137
Consumer Other Financing Receivable Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
Consumer Other Financing Receivable Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 457 1,735
Consumer Other Financing Receivable Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,227 3,872
Consumer Other Financing Receivable Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 188,280 202,187
PUERTO RICO    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 17,818,640 15,938,114
PUERTO RICO | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 820,098 812,257
PUERTO RICO | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 775,500 667,699
PUERTO RICO | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,591,196 1,041,784
PUERTO RICO | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 2,891 4,444
PUERTO RICO | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 714 2,114
PUERTO RICO | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 3,190,399 2,528,298
PUERTO RICO | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 14,628,241 13,409,816
PUERTO RICO | Commercial Multi Family [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 133,567 80,077
PUERTO RICO | Commercial Multi Family [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 2,327 2,306
PUERTO RICO | Commercial Multi Family [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,300 5,021
PUERTO RICO | Commercial Multi Family [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 8,144 $ 3,186
Weighted average obligor risk rating [3] 11.16 11.69
PUERTO RICO | Commercial Multi Family [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 0 $ 0
PUERTO RICO | Commercial Multi Family [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Commercial Multi Family [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 11,771 10,513
PUERTO RICO | Commercial Multi Family [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 121,796 $ 69,564
Weighted average obligor risk rating [3] 6.04 5.63
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 2,751,107 $ 2,013,579
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 280,884 171,771
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 439,644 144,104
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 458,908 $ 169,900
Weighted average obligor risk rating [3] 11.1 11.2
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 0 $ 0
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,179,436 485,775
PUERTO RICO | Commercial Real Estate Non Owner Occupied [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 1,571,671 $ 1,527,804
Weighted average obligor risk rating [3] 6.73 6.83
PUERTO RICO | Commercial Real Estate Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 1,933,472 $ 1,473,362
PUERTO RICO | Commercial Real Estate Owner Occupied [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 318,261 212,236
PUERTO RICO | Commercial Real Estate Owner Occupied [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 165,409 144,536
PUERTO RICO | Commercial Real Estate Owner Occupied [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 472,505 $ 306,014
Weighted average obligor risk rating [3] 11.23 11.28
PUERTO RICO | Commercial Real Estate Owner Occupied [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 2,258 $ 3,595
PUERTO RICO | Commercial Real Estate Owner Occupied [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Commercial Real Estate Owner Occupied [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 958,433 666,381
PUERTO RICO | Commercial Real Estate Owner Occupied [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 975,039 $ 806,981
Weighted average obligor risk rating [3] 7.08 6.96
PUERTO RICO | Commercial And Industrial Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 2,703,598 $ 2,807,785
PUERTO RICO | Commercial And Industrial Loans [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 207,925 421,332
PUERTO RICO | Commercial And Industrial Loans [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 153,972 367,834
PUERTO RICO | Commercial And Industrial Loans [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 310,990 $ 272,880
Weighted average obligor risk rating [3] 11.24 11.48
PUERTO RICO | Commercial And Industrial Loans [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 633 $ 849
PUERTO RICO | Commercial And Industrial Loans [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 98 255
PUERTO RICO | Commercial And Industrial Loans [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 673,618 1,063,150
PUERTO RICO | Commercial And Industrial Loans [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 2,029,980 $ 1,744,635
Weighted average obligor risk rating [3] 7.1 6.89
PUERTO RICO | Commercial Portfolio Segment Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 7,521,744 $ 6,374,803
PUERTO RICO | Commercial Portfolio Segment Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 809,397 807,645
PUERTO RICO | Commercial Portfolio Segment Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 760,325 661,495
PUERTO RICO | Commercial Portfolio Segment Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 1,250,547 $ 751,980
Weighted average obligor risk rating [3] 11.18 11.33
PUERTO RICO | Commercial Portfolio Segment Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 2,891 $ 4,444
PUERTO RICO | Commercial Portfolio Segment Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 98 255
PUERTO RICO | Commercial Portfolio Segment Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 2,823,258 2,225,819
PUERTO RICO | Commercial Portfolio Segment Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 4,698,486 $ 4,148,984
Weighted average obligor risk rating [3] 6.95 6.87
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 108,678 $ 159,384
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 5,573 4,612
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 7,619 6,204
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 33,884 $ 16,908
Weighted average obligor risk rating [3] 11.11 11.82
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 0 $ 0
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 47,076 27,724
PUERTO RICO | Commercial Real Estate Construction Financing Receivable Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 61,602 $ 131,660
Weighted average obligor risk rating [3] 7.56 7.43
PUERTO RICO | Mortgages [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] $ 6,220,395 $ 5,450,501
PUERTO RICO | Mortgages [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 3,640 0
PUERTO RICO | Mortgages [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 6,003 0
PUERTO RICO | Mortgages [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 247,674 218,680
PUERTO RICO | Mortgages [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Mortgages [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Mortgages [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 257,317 218,680
PUERTO RICO | Mortgages [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 5,963,078 5,231,821
PUERTO RICO | Finance Leases Portfolio Segment Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 606,927 564,389
PUERTO RICO | Finance Leases Portfolio Segment Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Finance Leases Portfolio Segment Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Finance Leases Portfolio Segment Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 3,014 3,102
PUERTO RICO | Finance Leases Portfolio Segment Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Finance Leases Portfolio Segment Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 77 0
PUERTO RICO | Finance Leases Portfolio Segment Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 3,091 3,102
PUERTO RICO | Finance Leases Portfolio Segment Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 603,836 561,287
PUERTO RICO | Consumer [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 3,360,896 3,389,037
PUERTO RICO | Consumer [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,488 0
PUERTO RICO | Consumer [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,553 0
PUERTO RICO | Consumer [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 56,077 51,114
PUERTO RICO | Consumer [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 539 1,859
PUERTO RICO | Consumer [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 59,657 52,973
PUERTO RICO | Consumer [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 3,301,239 3,336,064
PUERTO RICO | Consumer Credit Card Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,121,477 1,140,164
PUERTO RICO | Consumer Credit Card Financing Receivable [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Credit Card Financing Receivable [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Credit Card Financing Receivable [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 19,092 21,070
PUERTO RICO | Consumer Credit Card Financing Receivable [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Credit Card Financing Receivable [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Credit Card Financing Receivable [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 19,092 21,070
PUERTO RICO | Consumer Credit Card Financing Receivable [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,102,385 1,119,094
PUERTO RICO | Home Equity Line of Credit [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 11,449 13,400
PUERTO RICO | Home Equity Line of Credit [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Home Equity Line of Credit [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Home Equity Line of Credit [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 72 8,186
PUERTO RICO | Home Equity Line of Credit [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Home Equity Line of Credit [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 7
PUERTO RICO | Home Equity Line of Credit [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 72 8,193
PUERTO RICO | Home Equity Line of Credit [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 11,377 5,207
PUERTO RICO | Personal [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,232,845 1,262,533
PUERTO RICO | Personal [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,488 0
PUERTO RICO | Personal [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,553 0
PUERTO RICO | Personal [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 23,309 8,380
PUERTO RICO | Personal [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Personal [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 77
PUERTO RICO | Personal [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 26,350 8,457
PUERTO RICO | Personal [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,206,495 1,254,076
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 804,990 767,296
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 11,834 11,348
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 82 40
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 11,916 11,388
PUERTO RICO | Consumer Loans Auto Financing Receivable [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 793,074 755,908
PUERTO RICO | Consumer Other Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 190,135 205,644
PUERTO RICO | Consumer Other Financing Receivable Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Other Financing Receivable Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Other Financing Receivable Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 1,770 2,130
PUERTO RICO | Consumer Other Financing Receivable Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 0 0
PUERTO RICO | Consumer Other Financing Receivable Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 457 1,735
PUERTO RICO | Consumer Other Financing Receivable Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 2,227 3,865
PUERTO RICO | Consumer Other Financing Receivable Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income [3] 187,908 201,779
UNITED STATES    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 4,679,426 3,466,337
UNITED STATES | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 100,323 66,250
UNITED STATES | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 83,285 25,309
UNITED STATES | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 239,302 75,098
UNITED STATES | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,182 2,467
UNITED STATES | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 426,092 169,124
UNITED STATES | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 4,253,334 3,297,213
UNITED STATES | Commercial Multi Family [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 651,074 407,203
UNITED STATES | Commercial Multi Family [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 15,028 11,283
UNITED STATES | Commercial Multi Family [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 7,231 6,818
UNITED STATES | Commercial Multi Family [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 475 $ 13,653
Weighted average obligor risk rating 11.1 11
UNITED STATES | Commercial Multi Family [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 0 $ 0
UNITED STATES | Commercial Multi Family [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Commercial Multi Family [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 22,734 31,754
UNITED STATES | Commercial Multi Family [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 628,340 $ 375,449
Weighted average obligor risk rating 7.14 7.24
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 878,562 $ 512,567
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 52,349 17,424
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 7,295 8,745
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 16,498 $ 13,446
Weighted average obligor risk rating 11 11
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 0 $ 0
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 76,142 39,615
UNITED STATES | Commercial Real Estate Non Owner Occupied [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 802,420 $ 472,952
Weighted average obligor risk rating 6.9 6.83
UNITED STATES | Commercial Real Estate Owner Occupied [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 147,196 $ 193,905
UNITED STATES | Commercial Real Estate Owner Occupied [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 10,975 24,284
UNITED STATES | Commercial Real Estate Owner Occupied [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,091 4,707
UNITED STATES | Commercial Real Estate Owner Occupied [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 3,700 $ 4,672
Weighted average obligor risk rating 11.2 11.17
UNITED STATES | Commercial Real Estate Owner Occupied [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 0 $ 0
UNITED STATES | Commercial Real Estate Owner Occupied [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Commercial Real Estate Owner Occupied [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 15,766 33,663
UNITED STATES | Commercial Real Estate Owner Occupied [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 131,430 $ 160,242
Weighted average obligor risk rating 6.97 7.04
UNITED STATES | Commercial And Industrial Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 931,848 $ 645,789
UNITED STATES | Commercial And Industrial Loans [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 15,001 5,357
UNITED STATES | Commercial And Industrial Loans [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 7,497 2,548
UNITED STATES | Commercial And Industrial Loans [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 196,691 $ 7,988
Weighted average obligor risk rating 11.56 11.09
UNITED STATES | Commercial And Industrial Loans [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 0 $ 0
UNITED STATES | Commercial And Industrial Loans [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Commercial And Industrial Loans [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 219,189 15,893
UNITED STATES | Commercial And Industrial Loans [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 712,659 $ 629,896
Weighted average obligor risk rating 6.28 6.29
UNITED STATES | Commercial Portfolio Segment Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 2,608,680 $ 1,759,464
UNITED STATES | Commercial Portfolio Segment Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 93,353 58,348
UNITED STATES | Commercial Portfolio Segment Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 23,114 22,818
UNITED STATES | Commercial Portfolio Segment Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 217,364 $ 39,759
Weighted average obligor risk rating 11.51 11.04
UNITED STATES | Commercial Portfolio Segment Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 0 $ 0
UNITED STATES | Commercial Portfolio Segment Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Commercial Portfolio Segment Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 333,831 120,925
UNITED STATES | Commercial Portfolio Segment Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 2,274,849 $ 1,638,539
Weighted average obligor risk rating 6.78 6.74
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 583,814 $ 92,436
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 58,197 0
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 671 $ 0
Weighted average obligor risk rating 11 0
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 0 $ 0
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 58,868 0
UNITED STATES | Commercial Real Estate Construction Financing Receivable Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 524,946 $ 92,436
Weighted average obligor risk rating 7.84 7.76
UNITED STATES | Mortgages [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 945,084 $ 1,052,385
UNITED STATES | Mortgages [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Mortgages [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Mortgages [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 12,388 23,100
UNITED STATES | Mortgages [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Mortgages [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Mortgages [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 12,388 23,100
UNITED STATES | Mortgages [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 932,696 1,029,285
UNITED STATES | Legacy [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 67,974 80,818
UNITED STATES | Legacy [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 6,970 7,902
UNITED STATES | Legacy [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,974 2,491
UNITED STATES | Legacy [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 7,002 $ 9,204
Weighted average obligor risk rating 11.14 11.11
UNITED STATES | Legacy [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 0 $ 0
UNITED STATES | Legacy [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Legacy [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 15,946 19,597
UNITED STATES | Legacy [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 52,028 $ 61,221
Weighted average obligor risk rating 7.71 7.7
UNITED STATES | Consumer [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 473,874 $ 481,234
UNITED STATES | Consumer [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,877 3,035
UNITED STATES | Consumer [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 3,182 2,467
UNITED STATES | Consumer [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 5,059 5,502
UNITED STATES | Consumer [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 468,815 475,732
UNITED STATES | Consumer Credit Card Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 14,033 15,065
UNITED STATES | Consumer Credit Card Financing Receivable [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Credit Card Financing Receivable [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Credit Card Financing Receivable [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Credit Card Financing Receivable [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Credit Card Financing Receivable [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Credit Card Financing Receivable [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Credit Card Financing Receivable [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 14,033 15,065
UNITED STATES | Home Equity Line of Credit [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 315,110 352,762
UNITED STATES | Home Equity Line of Credit [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Home Equity Line of Credit [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Home Equity Line of Credit [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 1,421 2,457
UNITED STATES | Home Equity Line of Credit [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Home Equity Line of Credit [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 2,657 1,632
UNITED STATES | Home Equity Line of Credit [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 4,078 4,089
UNITED STATES | Home Equity Line of Credit [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 311,032 348,673
UNITED STATES | Personal [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 144,286 112,919
UNITED STATES | Personal [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Personal [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Personal [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 456 571
UNITED STATES | Personal [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Personal [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 525 835
UNITED STATES | Personal [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 981 1,406
UNITED STATES | Personal [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 143,305 111,513
UNITED STATES | Consumer Loans Auto Financing Receivable [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 73 73
UNITED STATES | Consumer Loans Auto Financing Receivable [Member] | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Loans Auto Financing Receivable [Member] | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Loans Auto Financing Receivable [Member] | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Loans Auto Financing Receivable [Member] | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Loans Auto Financing Receivable [Member] | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Loans Auto Financing Receivable [Member] | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Loans Auto Financing Receivable [Member] | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 73 73
UNITED STATES | Consumer Other Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 372 415
UNITED STATES | Consumer Other Financing Receivable Member | Watch [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Other Financing Receivable Member | Special Mention Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Other Financing Receivable Member | Substandard Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 7
UNITED STATES | Consumer Other Financing Receivable Member | Doubtful Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Other Financing Receivable Member | Unlikely To Be Collected Financing Receivable Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 0
UNITED STATES | Consumer Other Financing Receivable Member | Classified Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income 0 7
UNITED STATES | Consumer Other Financing Receivable Member | Pass Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans held-in-portfolio, net of unearned income $ 372 $ 408
[1] Non-covered loans held-in-portfolio at September 30, 2015 are net of $103 million in unearned income and exclude $171 million in loans held-for-sale. (December 31, 2014 - $94 million in unearned income and $106 million in loans held-for-sale.)
[2] The legacy portfolio is comprised of commercial loans, construction loans and lease financings related to certain lending products exited by the Corporation as part of restructuring efforts carried out in prior years at the BPNA segment.
[3] Excludes covered loans acquired in the Westernbank FDIC-assisted transaction.