Debt securities available-for-sale (Tables)

9 Months Ended

Sep. 30, 2022

Investments [Abstract]

Debt Securities, Available-For-Sale

		At September 30, 2022
				Gross		Gross				Weighted
		Amortized		unrealized		unrealized		Fair		average
(In thousands)		cost		gains		losses		value		yield
U.S. Treasury securities
	Within 1 year	$	7,690,995	$	382	$	34,608	$	7,656,769	2.23	%
	After 1 to 5 years		11,739,136		-		944,129		10,795,007	1.26
	After 5 to 10 years		3,531,911		-		477,765		3,054,146	1.39
Total U.S. Treasury securities			22,962,042		382		1,456,502		21,505,922	1.60
Collateralized mortgage obligations - federal agencies
	After 1 to 5 years		4,288		-		207		4,081	1.77
	After 5 to 10 years		37,695		-		2,058		35,637	1.70
	After 10 years		147,962		28		11,504		136,486	2.39
Total collateralized mortgage obligations - federal agencies			189,945		28		13,769		176,204	2.24
Mortgage-backed securities
	Within 1 year		1		-		-		1	7.16
	After 1 to 5 years		72,119		16		3,620		68,515	2.36
	After 5 to 10 years		833,972		47		67,813		766,206	2.11
	After 10 years		7,013,463		1,266		1,268,503		5,746,226	1.60
Total mortgage-backed securities			7,919,555		1,329		1,339,936		6,580,948	1.66
Other
	After 1 to 5 years		1,077		-		3		1,074	3.97
Total other			1,077		-		3		1,074	3.97
Total debt securities available-for-sale[1]		$	31,072,619	$	1,739	$	2,810,210	$	28,264,148	1.62	%
[1]	Includes $19.6 billion pledged to secure government 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 $18.5 billion serve as collateral for public funds.

		At December 31, 2021
				Gross		Gross				Weighted
		Amortized		unrealized		unrealized		Fair		average
(In thousands)		cost		gains		losses		value		yield
U.S. Treasury securities
	Within 1 year	$	1,225,558	$	13,556	$	69	$	1,239,045	2.33	%
	After 1 to 5 years		10,059,163		98,808		65,186		10,092,785	1.18
	After 5 to 10 years		4,563,265		739		36,804		4,527,200	1.22
Total U.S. Treasury securities			15,847,986		113,103		102,059		15,859,030	1.27
Obligations of U.S. Government sponsored entities
	Within 1 year		70		-		-		70	5.63
Total obligations of U.S. Government sponsored entities			70		-		-		70	5.63
Collateralized mortgage obligations - federal agencies
	After 1 to 5 years		2,433		42		-		2,475	2.16
	After 5 to 10 years		43,241		295		6		43,530	1.54
	After 10 years		172,176		3,441		357		175,260	2.13
Total collateralized mortgage obligations - federal agencies			217,850		3,778		363		221,265	2.01
Mortgage-backed securities
	Within 1 year		11		1		-		12	4.79
	After 1 to 5 years		65,749		2,380		11		68,118	2.23
	After 5 to 10 years		665,600		17,998		5		683,593	1.97
	After 10 years		8,263,835		68,128		195,910		8,136,053	1.67
Total mortgage-backed securities			8,995,195		88,507		195,926		8,887,776	1.69
Other
	After 1 to 5 years		123		5		-		128	3.62
Total other			123		5		-		128	3.62
Total debt securities available-for-sale[1]		$	25,061,224	$	205,393	$	298,348	$	24,968,269	1.42	%
[1]	Includes $22.0 billion pledged to secure government 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 $20.9 billion serve as collateral for public funds.

Debt Securities Available For Sale Unrealized Loss Position Fair Value

	At September 30, 2022
	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	$	13,636,522	$	1,054,349	$	3,617,608	$	402,153	$	17,254,130	$	1,456,502
Collateralized mortgage obligations - federal agencies		160,914		11,468		12,509		2,301		173,423		13,769
Mortgage-backed securities		1,810,828		170,187		4,721,928		1,169,749		6,532,756		1,339,936
Other		74		3		-		-		74		3
Total debt securities available-for-sale in an unrealized loss position	$	15,608,338	$	1,236,007	$	8,352,045	$	1,574,203	$	23,960,383	$	2,810,210

	At December 31, 2021
	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	$	9,590,448	$	102,059	$	-	$	-	$	9,590,448	$	102,059
Collateralized mortgage obligations - federal agencies		35,533		334		1,084		29		36,617		363
Mortgage-backed securities		5,767,556		170,614		595,051		25,312		6,362,607		195,926
Total debt securities available-for-sale in an unrealized loss position	$	15,393,537	$	273,007	$	596,135	$	25,341	$	15,989,672	$	298,348