
	December 31, 2022
			Recognized in OCI (1)						Not recognized in OCI
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Value		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(In millions)
Debt securities held to maturity:


Mortgage-backed securities:
Residential agency	$	289	$	—	$	(10)	$	279	$	—	$	(21)	$	258
Commercial agency	523		—		(1)		522		—		(29)		493
	$	812	$	—	$	(11)	$	801	$	—	$	(50)	$	751

Debt securities available for sale:
U.S. Treasury securities	$	1,310	$	—	$	(123)	$	1,187					$	1,187
Federal agency securities	898		—		(62)		836						836
Obligations of states and political subdivisions	2		—		—		2						2
Mortgage-backed securities:
Residential agency	19,477		—		(2,523)		16,954						16,954
Residential non-agency	1		—		—		1						1
Commercial agency	8,262		—		(649)		7,613						7,613
Commercial non-agency	198		—		(12)		186						186
Corporate and other debt securities	1,219		1		(66)		1,154						1,154
	$	31,367	$	1	$	(3,435)	$	27,933					$	27,933


	December 31, 2021
			Recognized in OCI (1)						Not recognized in OCI
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Carrying Value		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(In millions)
Debt securities held to maturity:


Mortgage-backed securities:
Residential agency	$	370	$	—	$	(13)	$	357	$	20	$	—	$	377
Commercial agency	543		—		(1)		542		31		—		573
	$	913	$	—	$	(14)	$	899	$	51	$	—	$	950

Debt securities available for sale:
U.S. Treasury securities	$	1,137	$	2	$	(7)	$	1,132					$	1,132
Federal agency securities	94		1		(3)		92						92
Obligations of states and political subdivisions	4		—		—		4						4
Mortgage-backed securities:
Residential agency	18,873		287		(198)		18,962						18,962
Residential non-agency	1		—		—		1						1
Commercial agency	6,271		163		(61)		6,373						6,373
Commercial non-agency	532		4		—		536						536
Corporate and other debt securities	1,351		36		(6)		1,381						1,381
	$	28,263	$	493	$	(275)	$	28,481					$	28,481


	Amortized Cost		Estimated Fair Value
	(In millions)
Debt securities held to maturity:
Mortgage-backed securities:
Residential agency	$	289	$	258
Commercial agency	523		493
	$	812	$	751
Debt securities available for sale:
Due in one year or less	$	165	$	164
Due after one year through five years	2,276		2,134
Due after five years through ten years	841		753
Due after ten years	147		128
Mortgage-backed securities:
Residential agency	19,477		16,954
Residential non-agency	1		1
Commercial agency	8,262		7,613
Commercial non-agency	198		186
	$	31,367	$	27,933

The following tables present gross unrealized losses and the related estimated fair value of debt securities held to maturity at December 31, 2022 and debt securities available for sale are presented at December 31, 2022 and 2021. For debt securities transferred to held to maturity from available for sale, the analysis in the tables below compares the securities' original amortized cost to its current estimated fair value; there were no unrealized losses on debt securities held to maturity using this analysis at December 31, 2021. All securities in an unrealized loss position are segregated between investments that have been in a continuous unrealized loss position for less than twelve months and for twelve months or more.


	December 31, 2022
	Less Than Twelve Months				Twelve Months or More				Total
	Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses
	(In millions)
Debt securities held to maturity:

Mortgage-backed securities:
Residential agency	$	251	$	(29)	$	7	$	(1)	$	258	$	(30)
Commercial agency	469		(26)		24		(4)		493		(30)
	$	720	$	(55)	$	31	$	(5)	$	751	$	(60)

Debt securities available for sale:
U.S Treasury securities	$	276	$	(8)	$	903	$	(115)	$	1,179	$	(123)
Federal agency securities	766		(50)		53		(12)		819		(62)
Mortgage-backed securities:
Residential agency	9,350		(1,005)		7,578		(1,518)		16,928		(2,523)

Commercial agency	6,110		(400)		1,503		(249)		7,613		(649)
Commercial non-agency	141		(8)		45		(4)		186		(12)
Corporate and other debt securities	736		(36)		354		(30)		1,090		(66)
	$	17,379	$	(1,507)	$	10,436	$	(1,928)	$	27,815	$	(3,435)


	December 31, 2021
	Less Than Twelve Months				Twelve Months or More				Total
	Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses		Estimated Fair Value		Gross Unrealized Losses
	(In millions)







Debt securities available for sale:
U.S. Treasury securities	$	1,010	$	(7)	$	—	$	—	$	1,010	$	(7)
Federal agency securities	63		(3)		—		—		63		(3)
Mortgage-backed securities:
Residential agency	9,528		(171)		686		(27)		10,214		(198)

Commercial agency	1,333		(29)		760		(32)		2,093		(61)

Corporate and other debt securities	444		(6)		—		—		444		(6)
	$	12,378	$	(216)	$	1,446	$	(59)	$	13,824	$	(275)

The number of individual debt positions in an unrealized loss position in the tables above increased from 479 at December 31, 2021 to 1,806 at December 31, 2022. The increase in the number of securities and the total amount of unrealized losses from year-end 2021 was primarily due to changes in market interest rates. In instances where an unrealized loss existed, there was no indication of an adverse change in credit on the underlying positions in the tables above. As it relates to these positions, management believes no individual unrealized loss represented credit impairment as of those dates. The Company does not intend to sell, and it is not more likely than not that the Company will be required to sell, the positions before the recovery of their amortized cost basis, which may be at maturity.

Gross realized gains and gross realized losses on sales of debt securities available for sale were immaterial for 2022. 2021 and 2020. The cost of securities sold is based on the specific identification method. As part of the Company's normal process for evaluating impairment, management did not identify any positions where impairment was believed to exist in 2022 or 2021 or 2020.