Investment Securities (Tables)

3 Months Ended

Mar. 31, 2016

Mar. 31, 2015

Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]



	March 31, 2016
(In thousands)	Amortized cost		Gross unrealized gains		Gross unrealized losses		Estimated fair value
Held-to-maturity
Municipal securities	$	631,646	$	11,519	$	6,681	$	636,484

Available-for-sale
U.S. Government agencies and corporations:
Agency securities	1,497,652		14,055		856		1,510,851
Agency guaranteed mortgage-backed securities	4,487,279		17,801		9,091		4,495,989
Small Business Administration loan-backed securities	2,019,668		14,480		13,321		2,020,827
Municipal securities	552,872		4,391		1,190		556,073
Other debt securities	25,434		147		3,672		21,909
	8,582,905		50,874		28,130		8,605,649
Money market mutual funds and other	96,132		104		—		96,236
	8,679,037		50,978		28,130		8,701,885
Total	$	9,310,683	$	62,497	$	34,811	$	9,338,369



	December 31, 2015
(In thousands)	Amortized cost		Gross unrealized gains		Gross unrealized losses		Estimated fair value
Held-to-maturity
Municipal securities	$	545,648	$	11,218	$	4,778	$	552,088

Available-for-sale
U.S. Government agencies and corporations:
Agency securities	1,231,740		4,313		2,658		1,233,395
Agency guaranteed mortgage-backed securities	3,964,593		7,919		36,037		3,936,475
Small Business Administration loan-backed securities	1,932,817		12,602		14,445		1,930,974
Municipal securities	417,374		2,177		856		418,695
Other debt securities	25,454		152		2,665		22,941
	7,571,978		27,163		56,661		7,542,480
Money market mutual funds and other	100,612		61		37		100,636
	7,672,590		27,224		56,698		7,643,116
Total	$	8,218,238	$	38,442	$	61,476	$	8,195,204

Contractual Maturities Debt Securities



	Held-to-maturity				Available-for-sale
(In thousands)	Amortized cost		Estimated fair value		Amortized cost		Estimated fair value

Principal return in one year or less	$	69,225	$	69,515	$	1,187,108	$	1,189,787
Principal return after one year through five years	238,605		242,328		3,483,268		3,491,732
Principal return after five years through ten years	203,989		207,198		2,769,584		2,781,632
Principal return after ten years	119,827		117,443		1,142,945		1,142,498
	$	631,646	$	636,484	$	8,582,905	$	8,605,649

Summary Of Amount Of Gross Unrealized Losses For Debt Securities And Estimated Fair Value



	March 31, 2016
	Less than 12 months				12 months or more				Total
(In thousands)	Gross unrealized losses		Estimated fair value		Gross unrealized losses		Estimated fair value		Gross unrealized losses		Estimated fair value
Held-to-maturity
Municipal securities	$	5,952	$	193,737	$	729	$	12,480	$	6,681	$	206,217
Available-for-sale
U.S. Government agencies and corporations:
Agency securities	312		299,591		544		129,191		856		428,782
Agency guaranteed mortgage-backed securities	6,836		1,707,106		2,255		149,293		9,091		1,856,399
Small Business Administration loan-backed securities	4,549		539,651		8,772		528,850		13,321		1,068,501
Municipal securities	935		140,612		255		14,231		1,190		154,843
Other	—		—		3,672		11,331		3,672		11,331
	12,632		2,686,960		15,498		832,896		28,130		3,519,856
Mutual funds and other	—		—		—		—		—		—
	12,632		2,686,960		15,498		832,896		28,130		3,519,856
Total	$	18,584	$	2,880,697	$	16,227	$	845,376	$	34,811	$	3,726,073



	December 31, 2015
	Less than 12 months				12 months or more				Total
(In thousands)	Gross unrealized losses		Estimated fair value		Gross unrealized losses		Estimated fair value		Gross unrealized losses		Estimated fair value
Held-to-maturity
Municipal securities	$	4,521	$	122,197	$	257	$	13,812	$	4,778	$	136,009
Available-for-sale
U.S. Government agencies and corporations:
Agency securities	2,176		559,196		482		131,615		2,658		690,811
Agency guaranteed mortgage-backed securities	34,583		3,639,824		1,454		65,071		36,037		3,704,895
Small Business Administration loan-backed securities	5,348		567,365		9,097		535,376		14,445		1,102,741
Municipal securities	735		102,901		121		5,733		856		108,634
Other	—		—		2,665		12,337		2,665		12,337
	42,842		4,869,286		13,819		750,132		56,661		5,619,418
Mutual funds and other	37		35,488		—		—		37		35,488
	42,879		4,904,774		13,819		750,132		56,698		5,654,906
Total	$	47,400	$	5,026,971	$	14,076	$	763,944	$	61,476	$	5,790,915

Rollforward Of Total Amount Of Credit-Related OTTI



(In thousands)	Three Months Ended March 31, 2016						Three Months Ended March 31, 2015
(In thousands)	HTM		AFS		Total		HTM			AFS			Total

Balance of credit-related OTTI at beginning of period	$	—	$	—	$	—	$	(9,079	)	$	(95,472	)	$	(104,551	)
Reductions for securities sold or paid off during the period	—		—		—		—			1,313			1,313
Reclassification of securities from HTM to AFS	—		—		—		9,079			(9,079		)	—
Balance of credit-related OTTI at end of period	$	—	$	—	$	—	$	—		$	(103,238	)	$	(103,238	)

Gains And Losses, Including OTTI, Recognized In Statement Of Income



	Three Months Ended
	March 31, 2016					March 31, 2015
(In thousands)	Gross gains		Gross losses			Gross gains		Gross losses
(In thousands)	Gross gains		Gross losses			Gross gains		Gross losses
Investment securities:
Held-to-maturity	$	—	$	—		$	1	$	—
Available-for-sale	30		2			958		1,198

Other noninterest-bearing investments	3,187		3,737			3,595		242
	3,217		3,739			4,554		1,440
Net gains (losses)			$	(522	)			$	3,114

Statement of income information:
Equity securities gains (losses), net			$	(550	)			$	3,353
Fixed income securities gains (losses), net			28					(239		)
Net gains (losses)			$	(522	)			$	3,114

Tax and Nontaxable Interest Income by Investment Type [Table Text Block]



(In thousands)	Three Months Ended March 31, 2016						Three Months Ended March 31, 2015
	Taxable		Nontaxable		Total		Taxable		Nontaxable		Total
Investment securities:
Held-to-maturity	$	2,604	$	2,726	$	5,330	$	3,592	$	2,862	$	6,454
Available-for-sale	39,607		1,955		41,562		19,768		653		20,421
Trading	472		—		472		598		—		598
	$	42,683	$	4,681	$	47,364	$	23,958	$	3,515	$	27,473

- Definition

Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments.

+ References + Details