
	Quarter ended				Year-to-date period ended
(millions)	September 30, 2023		October 1, 2022		September 30, 2023		October 1, 2022
Service cost	$	6	$	6	$	18	$	23
Interest cost	44		34		132		91
Expected return on plan assets	(54)		(57)		(161)		(200)
Amortization of unrecognized prior service cost	2		2		7		7
Recognized net loss (gain)	10		(15)		10		(46)
Total pension income	$	8	$	(30)	$	6	$	(125)

For the quarter and year-to-date periods ended September 30, 2023, the Company recognized a loss of $10 million related to the remeasurement of a U.S. pension plan. The remeasurement was due to the amendment of the plan to split the pension plan in anticipation of the separation transaction. The remeasurement recognized was due primarily to a lower than expected return on plan assets.

For the quarter and year-to-date periods ended October 1, 2022, the Company recognized a gain of $15 million and $46 million, respectively, related to the remeasurement of two U.S. pension plans. These remeasurements were the result of distributions that exceeded service and interest costs resulting in settlement accounting for those specific plans. The remeasurements recognized were due primarily to an increase in the discount rate relative to the previous remeasurement date partially offset by lower than expected return on plan assets.


	Quarter ended				Year-to-date period ended
(millions)	September 30, 2023		October 1, 2022		September 30, 2023		October 1, 2022
Service cost	$	2	$	2	$	5	$	8
Interest cost	11		6		31		18
Expected return on plan assets	(25)		(28)		(73)		(83)
Amortization of unrecognized prior service cost	(2)		(2)		(7)		(7)
Recognized net (gain) loss	(67)		—		(67)		—


Total postretirement benefit income	$	(81)	$	(22)	$	(111)	$	(64)

For the quarter and year-to-date periods ended September 30, 2023, the Company recognized a gain of $67 million related to the remeasurement of other postretirement benefit plans. These remeasurements were the result of separating the other postretirement benefit plans impacted by the separation transaction. The remeasurements recognized were due primarily to a higher than expected return on plan assets.


	Quarter ended				Year-to-date period ended
(millions)	September 30, 2023		October 1, 2022		September 30, 2023		October 1, 2022
Service cost	$	1	$	—	$	2	$	2
Interest cost	1		1		2		1

Recognized net experience gain	(1)		—		(2)		(2)
Total postemployment expense	$	1	$	1	$	2	$	1

For the quarter and year-to-date periods ended September 30, 2023, the Company recognized a gain of $1 million and $2 million, respectively, related to the remeasurement of a U.S. postemployment benefit plan. The remeasurement was the result of separating the postemployment plan impacted by the separation transaction. The remeasurement recognized was due primarily to a higher than expected return on plan assets.