PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS

6 Months Ended

Jun. 30, 2024

Retirement Benefits [Abstract]

PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS

PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS

The following is a summary of net periodic benefit cost relating to our pension and OPEB plans.

	Three Months Ended June 30,				Six Months Ended June 30,
(in millions)	2024		2023		2024		2023
Pension benefits
Service cost	$	4	$	7	$	11	$	13
Interest cost	38		35		76		72
Expected return on plan assets	(49)		(43)		(99)		(87)
Amortization of net losses and prior service costs	4		1		7		2
Net periodic pension cost	$	(3)	$	—	$	(5)	$	—
OPEB
Interest cost	$	2	$	2	$	4	$	4
Amortization of net loss and prior service credit	(5)		(6)		(10)		(12)
Net periodic OPEB cost (income)	$	(3)	$	(4)	$	(6)	$	(8)