Investment securities (Tables)

3 Months Ended

Mar. 31, 2016

Available For Sale Securities Text Block

		At March 31, 2016
				Gross		Gross				Weighted
		Amortized		unrealized		unrealized		Fair		average
(In thousands)		cost		gains		losses		value		yield
U.S. Treasury securities
	Within 1 year	$	24,665	$	143	$	-	$	24,808	4.92	%
	After 1 to 5 years		1,281,481		6,792		-		1,288,273	1.03
	After 5 to 10 years		9,939		332		-		10,271	1.99
Total U.S. Treasury securities			1,316,085		7,267		-		1,323,352	1.11
Obligations of U.S. Government sponsored entities
	After 1 to 5 years		904,631		5,221		109		909,743	1.33
	After 5 to 10 years		250		3		-		253	5.64
	After 10 years		23,000		-		58		22,942	3.24
Total obligations of U.S. Government sponsored entities			927,881		5,224		167		932,938	1.38
Obligations of Puerto Rico, States and political subdivisions
	After 1 to 5 years		7,292		-		176		7,116	3.88
	After 5 to 10 years		5,925		1		1,963		3,963	4.02
	After 10 years		18,604		1		5,954		12,651	6.99
Total obligations of Puerto Rico, States and political subdivisions			31,821		2		8,093		23,730	5.72
Collateralized mortgage obligations - federal agencies
	Within 1 year		282		-		-		282	0.95
	After 1 to 5 years		20,257		918		-		21,175	2.86
	After 5 to 10 years		41,078		818		-		41,896	2.86
	After 10 years		1,447,516		14,027		11,325		1,450,218	1.98
Total collateralized mortgage obligations - federal agencies			1,509,133		15,763		11,325		1,513,571	2.01
Mortgage-backed securities
	Within 1 year		25		-		-		25	4.80
	After 1 to 5 years		20,808		990		6		21,792	4.64
	After 5 to 10 years		281,359		6,195		2		287,552	2.43
	After 10 years		2,485,109		50,510		1,282		2,534,337	2.76
Total mortgage-backed securities			2,787,301		57,695		1,290		2,843,706	2.74
Equity securities (without contractual maturity)			1,351		1,090		2		2,439	7.82
Other
	After 1 to 5 years		8,819		10		-		8,829	1.72
	After 5 to 10 years		1,220		45		-		1,265	3.62
Total other			10,039		55		-		10,094	1.95
Total investment securities available-for-sale[1]		$	6,583,611	$	87,096	$	20,877	$	6,649,830	2.07	%
[1]Includes $2.2 billion pledged to secure public and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing agreements that the secured parties are not permitted to sell or repledge the collateral, of which $1.3 billion serve as collateral for public funds.

		At December 31, 2015
				Gross		Gross				Weighted
		Amortized		unrealized		unrealized		Fair		average
(In thousands)		cost		gains		losses		value		yield
U.S. Treasury securities
	Within 1 year	$	24,861	$	335	$	-	$	25,196	4.31	%
	After 1 to 5 years		1,149,807		365		1,999		1,148,173	1.03
	After 5 to 10 years		9,937		22		-		9,959	1.99
Total U.S. Treasury securities			1,184,605		722		1,999		1,183,328	1.11
Obligations of U.S. Government sponsored entities
	After 1 to 5 years		919,819		1,337		4,808		916,348	1.33
	After 5 to 10 years		250		1		-		251	5.64
	After 10 years		23,000		42		-		23,042	3.22
Total obligations of U.S. Government sponsored entities			943,069		1,380		4,808		939,641	1.38
Obligations of Puerto Rico, States and political subdivisions
	After 1 to 5 years		7,227		-		199		7,028	3.94
	After 5 to 10 years		5,925		-		2,200		3,725	4.02
	After 10 years		18,585		-		6,979		11,606	6.99
Total obligations of Puerto Rico, States and political subdivisions			31,737		-		9,378		22,359	5.74
Collateralized mortgage obligations - federal agencies
	After 1 to 5 years		21,446		594		37		22,003	2.81
	After 5 to 10 years		44,585		733		-		45,318	2.85
	After 10 years		1,518,662		8,137		33,283		1,493,516	1.99
Total collateralized mortgage obligations - federal agencies			1,584,693		9,464		33,320		1,560,837	2.02
Mortgage-backed securities
	After 1 to 5 years		22,015		987		8		22,994	4.65
	After 5 to 10 years		256,097		4,866		1,197		259,766	2.51
	After 10 years		2,039,217		34,839		12,620		2,061,436	2.83
Total mortgage-backed securities			2,317,329		40,692		13,825		2,344,196	2.81
Equity securities (without contractual maturity)			1,350		1,053		5		2,398	7.92
Other
	After 1 to 5 years		8,911		-		28		8,883	1.71
	After 5 to 10 years		1,311		39		-		1,350	3.62
Total other			10,222		39		28		10,233	1.95
Total investment securities available-for-sale[1]		$	6,073,005	$	53,350	$	63,363	$	6,062,992	2.07	%
[1]Includes $2.4 billion pledged to secure public and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing agreements that the secured parties are not permitted to sell or repledge the collateral, of which $1.5 billion serve as collateral for public funds.

Held To Maturity Securities Text Block

		At March 31, 2016
				Gross		Gross				Weighted
		Amortized		unrealized		unrealized		Fair		average
(In thousands)		cost		gains		losses		value		yield
Obligations of Puerto Rico, States and political subdivisions
	Within 1 year	$	3,050	$	-	$	1,601	$	1,449	5.91	%
	After 1 to 5 years		14,270		-		5,910		8,360	6.00
	After 5 to 10 years		18,930		-		7,716		11,214	6.17
	After 10 years		60,880		5,266		8,320		57,826	1.99
Total obligations of Puerto Rico, States and political subdivisions			97,130		5,266		23,547		78,849	3.52
Collateralized mortgage obligations - federal agencies
	After 5 to 10 years		86		5		-		91	5.45
Total collateralized mortgage obligations - federal agencies			86		5		-		91	5.45
Other
	After 1 to 5 years		2,000		-		26		1,974	1.81
Total other			2,000		-		26		1,974	1.81
Total investment securities held-to-maturity[1]		$	99,216	$	5,271	$	23,573	$	80,914	3.49	%
[1]Includes $97.5 million pledged to secure public and trust deposits that the secured parties are not permitted to sell or repledge the collateral.

		At December 31, 2015
				Gross		Gross				Weighted
		Amortized		unrealized		unrealized		Fair		average
(In thousands)		cost		gains		losses		value		yield
Obligations of Puerto Rico, States and political subdivisions
	Within 1 year	$	2,920	$	-	$	291	$	2,629	5.90	%
	After 1 to 5 years		13,655		-		5,015		8,640	5.98
	After 5 to 10 years		20,020		-		8,020		12,000	6.14
	After 10 years		62,222		3,604		8,280		57,546	2.08
Total obligations of Puerto Rico, States and political subdivisions			98,817		3,604		21,606		80,815	3.55
Collateralized mortgage obligations - federal agencies
	After 5 to 10 years		86		5		-		91	5.45
Total collateralized mortgage obligations - federal agencies			86		5		-		91	5.45
Other
	After 1 to 5 years		2,000		-		17		1,983	1.81
Total other			2,000		-		17		1,983	1.81
Total investment securities held-to-maturity[1]		$	100,903	$	3,609	$	21,623	$	82,889	3.52	%
[1]Includes $57.2 million pledged to secure public and trust deposits that the secured parties are not permitted to sell or repledge the collateral.

Securities That Exceed 10 Percent Of Stockholders Equity [Member]

Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure Text Block

		March 31, 2016				December 31, 2015
(In thousands)	Amortized cost		Fair value		Amortized cost		Fair value
FNMA	$	2,799,998	$	2,824,458	$	2,649,860	$	2,633,899
FHLB		329,822		331,546		340,119		338,700
Freddie Mac		1,221,128		1,228,096		1,088,691		1,079,956

Available For Sale Securities Member

Schedule Of Unrealized Loss On Investments Table Text Block

		At March 31, 2016
		Less than 12 months				12 months or more				Total
				Gross				Gross				Gross
		Fair		unrealized		Fair		unrealized		Fair		unrealized
(In thousands)		value		losses		value		losses		value		losses
Obligations of U.S. Government sponsored entities		$	73,342	$	113	$	19,376	$	54	$	92,718	$	167
Obligations of Puerto Rico, States and political
	subdivisions		6,229		10		15,515		8,083		21,744		8,093
Collateralized mortgage obligations - federal agencies			-		-		656,971		11,325		656,971		11,325
Mortgage-backed securities			231,705		816		80,005		474		311,710		1,290
Equity securities			48		2		-		-		48		2
Total investment securities available-for-sale in an
	unrealized loss position	$	311,324	$	941	$	771,867	$	19,936	$	1,083,191	$	20,877

		At December 31, 2015
		Less than 12 months				12 months or more				Total
				Gross				Gross				Gross
		Fair		unrealized		Fair		unrealized		Fair		unrealized
(In thousands)		value		losses		value		losses		value		losses
U.S. Treasury securities		$	589,689	$	1,999	$	-	$	-	$	589,689	$	1,999
Obligations of U.S. Government sponsored entities			390,319		2,128		181,744		2,680		572,063		4,808
Obligations of Puerto Rico, States and political
	subdivisions		884		164		19,490		9,214		20,374		9,378
Collateralized mortgage obligations - federal agencies			331,501		4,446		814,195		28,874		1,145,696		33,320
Mortgage-backed securities			1,641,663		12,992		22,362		833		1,664,025		13,825
Equity securities			45		5		-		-		45		5
Other			8,883		28		-		-		8,883		28
Total investment securities available-for-sale in an
	unrealized loss position	$	2,962,984	$	21,762	$	1,037,791	$	41,601	$	4,000,775	$	63,363

Held To Maturity Securities Member

Schedule Of Unrealized Loss On Investments Table Text Block

		At March 31, 2016
		Less than 12 months				12 months or more				Total
				Gross				Gross				Gross
		Fair		unrealized		Fair		unrealized		Fair		unrealized
(In thousands)		value		losses		value		losses		value		losses
Obligations of Puerto Rico, States and political subdivisions		$	-	$	-	$	31,393	$	23,547	$	31,393	$	23,547
Other			1,724		26		-		-		1,724		26
Total investment securities held-to-maturity in an unrealized
	loss position	$	1,724	$	26	$	31,393	$	23,547	$	33,117	$	23,573

		At December 31, 2015
		Less than 12 months				12 months or more				Total
				Gross				Gross				Gross
		Fair		unrealized		Fair		unrealized		Fair		unrealized
(In thousands)		value		losses		value		losses		value		losses
Obligations of Puerto Rico, States and political subdivisions		$	-	$	-	$	33,334	$	21,606	$	33,334	$	21,606
Other			1,483		17		-		-		1,483		17
Total investment securities held-to-maturity in an unrealized
	loss position	$	1,483	$	17	$	33,334	$	21,606	$	34,817	$	21,623