PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Tables)

9 Months Ended

Sep. 30, 2023

Postemployment Benefits [Abstract]

Schedule of Net Benefit Costs

The following are the components of defined benefit pension and OPEB costs (credits):

DEFINED BENEFIT PENSION COSTS (CREDITS)

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions)	2023		2022		2023		2022
Service cost	$	8	$	11	$	24	$	35
Interest cost	59		32		176		95
Expected return on plan assets	(79)		(93)		(236)		(277)
Amortization:
Prior service costs	5		1		13		1
Net actuarial loss	—		4		2		11
Net periodic benefit credits	$	(7)	$	(45)	$	(21)	$	(135)

OPEB COSTS (CREDITS)

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions)	2023		2022		2023		2022
Service cost	$	2	$	11	$	7	$	32
Interest cost	15		19		47		59
Expected return on plan assets	(10)		(10)		(31)		(29)
Amortization:
Prior service costs (credits)	(4)		1		(12)		1
Net actuarial gain	(36)		(3)		(109)		(9)
Net periodic benefit costs (credits)	$	(33)	$	18	$	(98)	$	54