Debt securities (Tables)

6 Months Ended

Jun. 30, 2018

		At June 30, 2018
				Gross		Gross				Weighted
		Amortized		unrealized		unrealized		Fair		average
(In thousands)		cost		gains		losses		value		yield
U.S. Treasury securities
	Within 1 year	$	1,277,840	$	30	$	4,517	$	1,273,353	1.42	%
	After 1 to 5 years		3,372,451		977		58,687		3,314,741	1.93
	After 5 to 10 years		394,072		-		5,201		388,871	2.50
Total U.S. Treasury securities			5,044,363		1,007		68,405		4,976,965	1.85
Obligations of U.S. Government sponsored entities
	Within 1 year		288,749		10		937		287,822	1.37
	After 1 to 5 years		248,546		-		4,492		244,054	1.50
Total obligations of U.S. Government sponsored entities			537,295		10		5,429		531,876	1.43
Obligations of Puerto Rico, States and political subdivisions
	After 1 to 5 years		6,796		-		153		6,643	1.76
Total obligations of Puerto Rico, States and political subdivisions			6,796		-		153		6,643	1.76
Collateralized mortgage obligations - federal agencies
	After 1 to 5 years		1,075		-		8		1,067	1.93
	After 5 to 10 years		124,736		-		6,214		118,522	1.69
	After 10 years		721,252		1,389		32,561		690,080	2.09
Total collateralized mortgage obligations - federal agencies			847,063		1,389		38,783		809,669	2.03
Mortgage-backed securities
	Within 1 year		962		8		-		970	4.25
	After 1 to 5 years		6,768		38		202		6,604	2.70
	After 5 to 10 years		333,026		1,558		9,239		325,345	2.24
	After 10 years		4,029,804		11,325		157,872		3,883,257	2.43
Total mortgage-backed securities			4,370,560		12,929		167,313		4,216,176	2.42
Other
	After 5 to 10 years		677		4		-		681	3.62
Total other			677		4		-		681	3.62
Total debt securities available-for-sale^[1]		$	10,806,754	$	15,339	$	280,083	$	10,542,010	2.07	%
[1]Includes $8.2 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 $7.5 billion serve as collateral for public funds.

		At December 31, 2017
				Gross		Gross				Weighted
		Amortized		unrealized		unrealized		Fair		average
(In thousands)		cost		gains		losses		value		yield
U.S. Treasury securities
	Within 1 year	$	1,112,791	$	8	$	2,101	$	1,110,698	1.06	%
	After 1 to 5 years		2,550,116		-		26,319		2,523,797	1.55
	After 5 to 10 years		293,579		281		191		293,669	2.24
Total U.S. Treasury securities			3,956,486		289		28,611		3,928,164	1.46
Obligations of U.S. Government sponsored entities
	Within 1 year		276,304		21		818		275,507	1.26
	After 1 to 5 years		336,922		22		3,518		333,426	1.48
Total obligations of U.S. Government sponsored entities			613,226		43		4,336		608,933	1.38
Obligations of Puerto Rico, States and political subdivisions
	After 1 to 5 years		6,668		-		59		6,609	2.30
Total obligations of Puerto Rico, States and political subdivisions			6,668		-		59		6,609	2.30
Collateralized mortgage obligations - federal agencies
	Within 1 year		40		-		-		40	2.60
	After 1 to 5 years		16,972		173		75		17,070	2.90
	After 5 to 10 years		36,186		57		526		35,717	2.31
	After 10 years		914,568		2,789		26,431		890,926	2.01
Total collateralized mortgage obligations - federal agencies			967,766		3,019		27,032		943,753	2.03
Mortgage-backed securities
	Within 1 year		484		8		-		492	4.23
	After 1 to 5 years		14,599		206		211		14,594	3.50
	After 5 to 10 years		339,161		2,390		3,765		337,786	2.21
	After 10 years		4,385,368		19,493		69,071		4,335,790	2.46
Total mortgage-backed securities			4,739,612		22,097		73,047		4,688,662	2.44
Other
	After 5 to 10 years		789		13		-		802	3.62
Total other			789		13		-		802	3.62
Total debt securities available-for-sale^[1]		$	10,284,547	$	25,461	$	133,085	$	10,176,923	1.96	%
[1]Includes $6.6 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 $5.6 billion serve as collateral for public funds.

Debt Securities Available For Sale Unrealized Loss Position Fair Value [Table Text Block]

		At June 30, 2018
		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		$	2,742,979	$	50,265	$	1,264,938	$	18,140	$	4,007,917	$	68,405
Obligations of U.S. Government sponsored entities			147,211		847		381,273		4,582		528,484		5,429
Obligations of Puerto Rico, States and political
	subdivisions		6,643		153		-		-		6,643		153
Collateralized mortgage obligations - federal agencies			195,626		4,469		541,559		34,314		737,185		38,783
Mortgage-backed securities			1,360,340		43,508		2,544,264		123,805		3,904,604		167,313
Total debt securities available-for-sale in an
	unrealized loss position	$	4,452,799	$	99,242	$	4,732,034	$	180,841	$	9,184,833	$	280,083

		At December 31, 2017
		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		$	2,608,473	$	14,749	$	1,027,066	$	13,862	$	3,635,539	$	28,611
Obligations of U.S. Government sponsored entities			214,670		1,108		376,807		3,228		591,477		4,336
Obligations of Puerto Rico, States and political
	subdivisions		6,609		59		-		-		6,609		59
Collateralized mortgage obligations - federal agencies			153,336		2,110		595,339		24,922		748,675		27,032
Mortgage-backed securities			1,515,295		12,529		2,652,359		60,518		4,167,654		73,047
Total debt securities available-for-sale in an
	unrealized loss position	$	4,498,383	$	30,555	$	4,651,571	$	102,530	$	9,149,954	$	133,085

Debt Securities, Held-to-maturity

		At June 30, 2018
				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	$	3,445	$	-	$	7	$	3,438	5.98	%
	After 1 to 5 years		16,195		89		144		16,140	6.06
	After 5 to 10 years		26,140		317		1,369		25,088	3.62
	After 10 years		45,148		3,636		60		48,724	1.90
Total obligations of Puerto Rico, States and political subdivisions			90,928		4,042		1,580		93,390	3.29
Collateralized mortgage obligations - federal agencies
	After 5 to 10 years		61		4		-		65	5.44
Total collateralized mortgage obligations - federal agencies			61		4		-		65	5.44
Trust preferred securities
	After 5 to 10 years		1,637		-		-		1,637	8.33
	After 10 years		11,561		-		-		11,561	6.51
Total trust preferred securities			13,198		-		-		13,198	6.73
Other
	Within 1 year		250		-		-		250	3.52
	After 1 to 5 years		500		-		7		493	2.97
Total other			750		-		7		743	3.15
Total debt securities held-to-maturity^[1]		$	104,937	$	4,046	$	1,587	$	107,396	3.72	%
[1]Includes $90.9 million pledged to secure public and trust deposits that the secured parties are not permitted to sell or repledge the collateral.

		At December 31, 2017
				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	$	3,295	$	-	$	79	$	3,216	5.96	%
	After 1 to 5 years		15,485		-		4,143		11,342	6.05
	After 5 to 10 years		29,240		-		8,905		20,335	3.89
	After 10 years		44,734		3,834		222		48,346	1.93
Total obligations of Puerto Rico, States and political subdivisions			92,754		3,834		13,349		83,239	3.38
Collateralized mortgage obligations - federal agencies
	After 5 to 10 years		67		4		-		71	5.45
Total collateralized mortgage obligations - federal agencies			67		4		-		71	5.45
Trust preferred securities
	After 5 to 10 years		1,637		-		-		1,637	8.33
	After 10 years		11,561		-		-		11,561	6.51
Total trust preferred securities			13,198		-		-		13,198	6.73
Other
	Within 1 year		500		-		7		493	1.96
	After 1 to 5 years		500		-		-		500	2.97
Total other			1,000		-		7		993	2.47
Total debt securities held-to-maturity^[1]		$	107,019	$	3,838	$	13,356	$	97,501	3.79	%
[1]Includes $92.8 million pledged to secure public and trust deposits that the secured parties are not permitted to sell or repledge the collateral.

Debt Securities Held To Maturity Unrealized Loss Position Fair Value [Table Text Block]

		At June 30, 2018
		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		$	7,236	$	19	$	29,524	$	1,561	$	36,760	$	1,580
Other			250		-		493		7		743		7
Total debt securities held-to-maturity in an unrealized
	loss position	$	7,486	$	19	$	30,017	$	1,568	$	37,503	$	1,587

		At December 31, 2017
		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		$	-	$	-	$	35,696	$	13,349	$	35,696	$	13,349
Other			-		-		743		7		743		7
Total debt securities held-to-maturity in an unrealized
	loss position	$	-	$	-	$	36,439	$	13,356	$	36,439	$	13,356

Available For Sale Securities Member

Schedule Of Securities Aggregate Amortized Cost Exceed 10 Of Stockholders Equity [Table Text Block]

		June 30, 2018				December 31, 2017

(In thousands)	Amortized cost		Fair value		Amortized cost		Fair value
FNMA	$	3,330,286	$	3,207,410	$	3,621,537	$	3,572,474
Freddie Mac		1,212,413		1,164,737		1,358,708		1,335,685

- Definition

Tabular disclosure of all investments in certain debt and equity securities for which the entity has the positive intent and ability to hold until maturity.

+ References + Details