PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
(In millions)	2023		2022		2023		2022
Service cost	$	8	$	12	$	16	$	24
Interest cost	58		31		117		63
Expected return on plan assets	(78)		(92)		(157)		(184)
Amortization:
Prior service costs	4		—		8		—
Net actuarial loss	1		3		2		7
Net periodic benefit credits	$	(7)	$	(46)	$	(14)	$	(90)

OPEB COSTS (CREDITS)

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2023		2022		2023		2022
Service cost	$	3	$	10	$	5	$	21
Interest cost	16		20		32		40
Expected return on plan assets	(10)		(9)		(21)		(19)
Amortization:
Prior service credits	(4)		—		(8)		—
Net actuarial gain	(37)		(3)		(73)		(6)
Net periodic benefit costs (credits)	$	(32)	$	18	$	(65)	$	36