PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS

3 Months Ended

Mar. 31, 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 March 31,
(in millions)	2024		2023
Pension benefits
Service cost	$	7	$	6
Interest cost	38		37
Expected return on plan assets	(50)		(44)
Amortization of net losses and prior service costs	3		1
Net periodic pension cost	$	(2)	$	—
OPEB
Interest cost	$	2	$	2
Amortization of net loss and prior service credit	(5)		(6)
Net periodic OPEB cost (income)	$	(3)	$	(4)