Note Allowance for loan losses (Credit quality indicators of non-covered loans held-in-portfolio based obligor risk ratings) (Detail) $ in Thousands		Sep. 30, 2017 USD ($)		Dec. 31, 2016 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 23,173,450	[1],[2]	$ 22,773,747	[3],[4]
Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,020,841		851,514
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		662,735		653,338
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,432,614		1,404,885
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,721		29,457
Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		5,610		3,460
Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,124,521		2,942,654
Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		20,048,929		19,831,093
Commercial multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,327,738		1,238,836
Commercial multi-family | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		17,165		15,553
Commercial multi-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		7,355		8,179
Commercial multi-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		12,277		6,766
Commercial multi-family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Commercial multi-family | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Commercial multi-family | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		36,797		30,498
Commercial multi-family | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,290,941		1,208,338
CRE non-owner occupied
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		4,093,990		3,921,601
CRE non-owner occupied | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		418,961		367,621
CRE non-owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		373,693		387,636
CRE non-owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		359,085		343,774
CRE non-owner occupied | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		155
CRE non-owner occupied | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
CRE non-owner occupied | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,151,739		1,099,186
CRE non-owner occupied | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,942,251		2,822,415
CRE owner occupied
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,961,057		2,035,220
CRE owner occupied | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		278,495		319,755
CRE owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		144,755		109,873
CRE owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		342,863		370,060
CRE owner occupied | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,248		17,788
CRE owner occupied | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
CRE owner occupied | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		768,361		817,476
CRE owner occupied | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,192,696		1,217,744
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,844,310		3,602,850
Commercial and industrial | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		271,763		139,139
Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		124,791		134,207
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		374,406		381,153
Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		473		11,514
Commercial and industrial | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		51		12
Commercial and industrial | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		771,484		666,025
Commercial and industrial | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,072,826		2,936,825
Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		11,227,095		10,798,507
Commercial | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		986,384		842,068
Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		650,594		639,895
Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,088,631		1,101,753
Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,721		29,457
Commercial | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		51		12
Commercial | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,728,381		2,613,185
Commercial | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		8,498,714		8,185,322
Construction
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		823,325		776,300
Construction | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		30,756		3,050
Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		7,744		9,858
Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		50,843		18,618
Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Construction | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Construction | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		89,343		31,526
Construction | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		733,982		744,774
Mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		6,529,235		6,696,361
Mortgages | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,637		4,407
Mortgages | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,277		1,987
Mortgages | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		207,474		201,801
Mortgages | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Mortgages | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Mortgages | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		213,388		208,195
Mortgages | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		6,315,847		6,488,166
Legacy
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[5]	37,508		45,293
Legacy | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		731		921
Legacy | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		467		786
Legacy | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,690		4,400
Legacy | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Legacy | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Legacy | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		4,888		6,107
Legacy | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		32,620		39,186
Leasing
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		754,881		702,893
Leasing | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Leasing | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Leasing | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,649		3,062
Leasing | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Leasing | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		35		0
Leasing | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,684		3,062
Leasing | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		752,197		699,831
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,801,406		3,754,393
Consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		333		1,068
Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		653		812
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		79,327		75,251
Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Consumer | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		5,524		3,448
Consumer | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		85,837		80,579
Consumer | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,715,569		3,673,814
Credit cards
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,083,326		1,100,765
Credit cards | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Credit cards | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Credit cards | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		20,639		18,755
Credit cards | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Credit cards | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Credit cards | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		20,639		18,755
Credit cards | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,062,687		1,082,010
Home equity lines of credit
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		202,942		260,526
Home equity lines of credit | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Home equity lines of credit | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Home equity lines of credit | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		7,613		2,108
Home equity lines of credit | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Home equity lines of credit | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		4,395		2,839
Home equity lines of credit | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		12,008		4,947
Home equity lines of credit | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		190,934		255,579
Personal
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,528,174		1,390,784
Personal | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		333		1,068
Personal | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		653		812
Personal | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		22,731		22,748
Personal | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Personal | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		717		609
Personal | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		24,434		25,237
Personal | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,503,740		1,365,547
Auto
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		822,007		826,601
Auto | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Auto | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Auto | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		12,244		12,321
Auto | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Auto | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		16		0
Auto | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		12,260		12,321
Auto | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		809,747		814,280
Other
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		164,957		175,717
Other | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		16,100		19,319
Other | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
Other | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		396		0
Other | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		16,496		19,319
Other | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		148,461		156,398
PUERTO RICO
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	17,118,072		17,168,424
PUERTO RICO | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	901,216		764,626
PUERTO RICO | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	605,002		625,888
PUERTO RICO | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	1,145,462		1,203,321
PUERTO RICO | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	2,721		29,457
PUERTO RICO | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	498		12
PUERTO RICO | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	2,654,899		2,623,304
PUERTO RICO | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	14,463,173		14,545,120
PUERTO RICO | Commercial multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	146,551		174,540
PUERTO RICO | Commercial multi-family | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	1,477		2,016
PUERTO RICO | Commercial multi-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	968		383
PUERTO RICO | Commercial multi-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 6,315		$ 6,108
Weighted average obligor risk rating	[6]	11.18		11.12
PUERTO RICO | Commercial multi-family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 0		$ 0
PUERTO RICO | Commercial multi-family | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Commercial multi-family | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	8,760		8,507
PUERTO RICO | Commercial multi-family | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 137,791		$ 166,033
Weighted average obligor risk rating	[6]	5.98		5.95
PUERTO RICO | CRE non-owner occupied
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 2,524,795		$ 2,564,285
PUERTO RICO | CRE non-owner occupied | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	375,756		310,510
PUERTO RICO | CRE non-owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	329,210		377,858
PUERTO RICO | CRE non-owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 321,592		$ 342,054
Weighted average obligor risk rating	[6]	11.07		11.07
PUERTO RICO | CRE non-owner occupied | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 0		$ 155
PUERTO RICO | CRE non-owner occupied | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | CRE non-owner occupied | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	1,026,558		1,030,577
PUERTO RICO | CRE non-owner occupied | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 1,498,237		$ 1,533,708
Weighted average obligor risk rating	[6]	7.01		6.91
PUERTO RICO | CRE owner occupied
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 1,672,273		$ 1,791,475
PUERTO RICO | CRE owner occupied | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	252,655		310,484
PUERTO RICO | CRE owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	141,304		109,873
PUERTO RICO | CRE owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 333,947		$ 360,941
Weighted average obligor risk rating	[6]	11.25		11.23
PUERTO RICO | CRE owner occupied | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 2,248		$ 17,788
PUERTO RICO | CRE owner occupied | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | CRE owner occupied | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	730,154		799,086
PUERTO RICO | CRE owner occupied | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 942,119		$ 992,389
Weighted average obligor risk rating	[6]	7.16		7.09
PUERTO RICO | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 2,825,992		$ 2,671,917
PUERTO RICO | Commercial and industrial | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	268,283		136,091
PUERTO RICO | Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	124,237		133,270
PUERTO RICO | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 217,459		$ 227,360
Weighted average obligor risk rating	[6]	11.21		11.09
PUERTO RICO | Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 473		$ 11,514
PUERTO RICO | Commercial and industrial | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	51		12
PUERTO RICO | Commercial and industrial | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	610,503		508,247
PUERTO RICO | Commercial and industrial | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 2,215,489		$ 2,163,670
Weighted average obligor risk rating	[6]	7.19		7.19
PUERTO RICO | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 7,169,611		$ 7,202,217
PUERTO RICO | Commercial | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	898,171		759,101
PUERTO RICO | Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	595,719		621,384
PUERTO RICO | Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 879,313		$ 936,463
Weighted average obligor risk rating	[6]	11.18		11.14
PUERTO RICO | Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 2,721		$ 29,457
PUERTO RICO | Commercial | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	51		12
PUERTO RICO | Commercial | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	2,375,975		2,346,417
PUERTO RICO | Commercial | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 4,793,636		$ 4,855,800
Weighted average obligor risk rating	[6]	7.11		7.06
PUERTO RICO | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 87,705		$ 85,558
PUERTO RICO | Construction | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		75		50
PUERTO RICO | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		5,353		1,705
PUERTO RICO | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 269		$ 1,668
Weighted average obligor risk rating		11.37		11
PUERTO RICO | Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 0		$ 0
PUERTO RICO | Construction | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Construction | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		5,697		3,423
PUERTO RICO | Construction | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 82,008		$ 82,135
Weighted average obligor risk rating		7.73		7.67
PUERTO RICO | Mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	$ 5,815,505		$ 5,916,500
PUERTO RICO | Mortgages | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	2,637		4,407
PUERTO RICO | Mortgages | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	3,277		1,987
PUERTO RICO | Mortgages | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	193,127		190,090
PUERTO RICO | Mortgages | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Mortgages | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Mortgages | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	199,041		196,484
PUERTO RICO | Mortgages | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	5,616,464		5,720,016
PUERTO RICO | Leasing
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	754,881		702,893
PUERTO RICO | Leasing | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Leasing | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Leasing | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	2,649		3,062
PUERTO RICO | Leasing | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Leasing | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	35		0
PUERTO RICO | Leasing | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	2,684		3,062
PUERTO RICO | Leasing | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	752,197		699,831
PUERTO RICO | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	3,290,370		3,261,256
PUERTO RICO | Consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	333		1,068
PUERTO RICO | Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	653		812
PUERTO RICO | Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	70,104		72,038
PUERTO RICO | Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Consumer | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	412		0
PUERTO RICO | Consumer | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	71,502		73,918
PUERTO RICO | Consumer | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	3,218,868		3,187,338
PUERTO RICO | Credit cards
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,083,246		1,100,607
PUERTO RICO | Credit cards | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Credit cards | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Credit cards | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		20,626		18,725
PUERTO RICO | Credit cards | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Credit cards | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Credit cards | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		20,626		18,725
PUERTO RICO | Credit cards | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,062,620		1,081,882
PUERTO RICO | Home equity lines of credit
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	6,124		8,351
PUERTO RICO | Home equity lines of credit | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Home equity lines of credit | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Home equity lines of credit | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	48		185
PUERTO RICO | Home equity lines of credit | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Home equity lines of credit | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Home equity lines of credit | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	48		185
PUERTO RICO | Home equity lines of credit | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	6,076		8,166
PUERTO RICO | Personal
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	1,214,331		1,150,177
PUERTO RICO | Personal | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	333		1,068
PUERTO RICO | Personal | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	653		812
PUERTO RICO | Personal | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	21,107		21,496
PUERTO RICO | Personal | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Personal | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	0		0
PUERTO RICO | Personal | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	22,093		23,376
PUERTO RICO | Personal | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income	[6]	1,192,238		1,126,801
PUERTO RICO | Auto
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		822,004		826,592
PUERTO RICO | Auto | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Auto | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Auto | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		12,244		12,321
PUERTO RICO | Auto | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Auto | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		16		0
PUERTO RICO | Auto | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		12,260		12,321
PUERTO RICO | Auto | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		809,744		814,271
PUERTO RICO | Other
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		164,665		175,529
PUERTO RICO | Other | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		16,079		19,311
PUERTO RICO | Other | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
PUERTO RICO | Other | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		396		0
PUERTO RICO | Other | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		16,475		19,311
PUERTO RICO | Other | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		148,190		156,218
UNITED STATES
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		6,055,378		5,605,323
UNITED STATES | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		119,625		86,888
UNITED STATES | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		57,733		27,450
UNITED STATES | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		287,152		201,564
UNITED STATES | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		5,112		3,448
UNITED STATES | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		469,622		319,350
UNITED STATES | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		5,585,756		5,285,973
UNITED STATES | Commercial multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,181,187		1,064,296
UNITED STATES | Commercial multi-family | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		15,688		13,537
UNITED STATES | Commercial multi-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		6,387		7,796
UNITED STATES | Commercial multi-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 5,962		$ 658
Weighted average obligor risk rating		11		11.31
UNITED STATES | Commercial multi-family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 0		$ 0
UNITED STATES | Commercial multi-family | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Commercial multi-family | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		28,037		21,991
UNITED STATES | Commercial multi-family | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 1,153,150		$ 1,042,305
Weighted average obligor risk rating		7.24		7.26
UNITED STATES | CRE non-owner occupied
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 1,569,195		$ 1,357,316
UNITED STATES | CRE non-owner occupied | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		43,205		57,111
UNITED STATES | CRE non-owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		44,483		9,778
UNITED STATES | CRE non-owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 37,493		$ 1,720
Weighted average obligor risk rating		11.21		11.7
UNITED STATES | CRE non-owner occupied | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 0		$ 0
UNITED STATES | CRE non-owner occupied | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | CRE non-owner occupied | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		125,181		68,609
UNITED STATES | CRE non-owner occupied | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 1,444,014		$ 1,288,707
Weighted average obligor risk rating		6.68		6.67
UNITED STATES | CRE owner occupied
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 288,784		$ 243,745
UNITED STATES | CRE owner occupied | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		25,840		9,271
UNITED STATES | CRE owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,451		0
UNITED STATES | CRE owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 8,916		$ 9,119
Weighted average obligor risk rating		11.05		11.05
UNITED STATES | CRE owner occupied | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 0		$ 0
UNITED STATES | CRE owner occupied | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | CRE owner occupied | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		38,207		18,390
UNITED STATES | CRE owner occupied | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 250,577		$ 225,355
Weighted average obligor risk rating		7.14		7.32
UNITED STATES | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 1,018,318		$ 930,933
UNITED STATES | Commercial and industrial | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3,480		3,048
UNITED STATES | Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		554		937
UNITED STATES | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 156,947		$ 153,793
Weighted average obligor risk rating		11.6		11.65
UNITED STATES | Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 0		$ 0
UNITED STATES | Commercial and industrial | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Commercial and industrial | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		160,981		157,778
UNITED STATES | Commercial and industrial | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 857,337		$ 773,155
Weighted average obligor risk rating		6.15		6.15
UNITED STATES | Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 4,057,484		$ 3,596,290
UNITED STATES | Commercial | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		88,213		82,967
UNITED STATES | Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		54,875		18,511
UNITED STATES | Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 209,318		$ 165,290
Weighted average obligor risk rating		11.49		11.62
UNITED STATES | Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 0		$ 0
UNITED STATES | Commercial | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Commercial | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		352,406		266,768
UNITED STATES | Commercial | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 3,705,078		$ 3,329,522
Weighted average obligor risk rating		6.76		6.78
UNITED STATES | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 735,620		$ 690,742
UNITED STATES | Construction | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		30,681		3,000
UNITED STATES | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,391		8,153
UNITED STATES | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 50,574		$ 16,950
Weighted average obligor risk rating		11		11
UNITED STATES | Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 0		$ 0
UNITED STATES | Construction | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Construction | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		83,646		28,103
UNITED STATES | Construction | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 651,974		$ 662,639
Weighted average obligor risk rating		7.68		7.67
UNITED STATES | Mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 713,730		$ 779,861
UNITED STATES | Mortgages | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Mortgages | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Mortgages | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		14,347		11,711
UNITED STATES | Mortgages | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Mortgages | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Mortgages | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		14,347		11,711
UNITED STATES | Mortgages | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		699,383		768,150
UNITED STATES | Legacy
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		37,508		45,293
UNITED STATES | Legacy | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		731		921
UNITED STATES | Legacy | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		467		786
UNITED STATES | Legacy | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 3,690		$ 4,400
Weighted average obligor risk rating		11.12		11.1
UNITED STATES | Legacy | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 0		$ 0
UNITED STATES | Legacy | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Legacy | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		4,888		6,107
UNITED STATES | Legacy | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 32,620		$ 39,186
Weighted average obligor risk rating		7.93		7.91
UNITED STATES | Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 511,036		$ 493,137
UNITED STATES | Consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		9,223		3,213
UNITED STATES | Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Consumer | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		5,112		3,448
UNITED STATES | Consumer | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		14,335		6,661
UNITED STATES | Consumer | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		496,701		486,476
UNITED STATES | Credit cards
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		80		158
UNITED STATES | Credit cards | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Credit cards | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Credit cards | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		13		30
UNITED STATES | Credit cards | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Credit cards | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Credit cards | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		13		30
UNITED STATES | Credit cards | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		67		128
UNITED STATES | Home equity lines of credit
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		196,818		252,175
UNITED STATES | Home equity lines of credit | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Home equity lines of credit | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Home equity lines of credit | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		7,565		1,923
UNITED STATES | Home equity lines of credit | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Home equity lines of credit | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		4,395		2,839
UNITED STATES | Home equity lines of credit | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		11,960		4,762
UNITED STATES | Home equity lines of credit | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		184,858		247,413
UNITED STATES | Personal
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		313,843		240,607
UNITED STATES | Personal | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Personal | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Personal | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		1,624		1,252
UNITED STATES | Personal | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Personal | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		717		609
UNITED STATES | Personal | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		2,341		1,861
UNITED STATES | Personal | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		311,502		238,746
UNITED STATES | Auto
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3		9
UNITED STATES | Auto | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Auto | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Auto | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Auto | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Auto | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Auto | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Auto | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		3		9
UNITED STATES | Other
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		292		188
UNITED STATES | Other | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		21		8
UNITED STATES | Other | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Other | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		0		0
UNITED STATES | Other | Sub-total
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		21		8
UNITED STATES | Other | Pass / Unrated
Financing Receivable, Recorded Investment [Line Items]
Loans held-in-portfolio, net of unearned income		$ 271		$ 180

[1] Includes $7.3 billion pledged to secure credit facilities and public funds that the secured parties are not permitted to sell or repledge the collateral, of which $4.7 billion were pledged at the Federal Home Loan Bank ("FHLB") as collateral for borrowings, $2.2 billion at the Federal Reserve Bank ("FRB") for discount window borrowings and $0.5 billion serve as collateral for public funds.

[2] Non-covered loans held-in-portfolio are net of $129 million in unearned income and exclude $69 million in loans held-for-sale.

[3] Includes $7.3 billion pledged to secure credit facilities and public funds that the secured parties are not permitted to sell or repledge the collateral, of which $4.5 billion were pledged at the FHLB as collateral for borrowings, $2.3 billion at the FRB for discount window borrowings and $0.5 billion serve as collateral for public funds.

[4] Non-covered loans held-in-portfolio are net of $121 million in unearned income and exclude $89 million in loans held-for-sale.

[5] 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.

[6] Excludes covered loans acquired in the Westernbank FDIC-assisted transaction.