PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Net Periodic Benefit Cost for All Significant Plans

The following table provides the components of the Corporation's net periodic benefit cost (credit) for all significant plans:

Net Periodic Benefit Cost (Credit) for All Significant Plans	Three Months Ended
In millions	Mar 31, 2024		Mar 31, 2023
Defined Benefit Pension Plans
Service cost 1	$	—	$	9
Interest cost	32		37
Expected return on plan assets	(42)		(52)
Amortization of net loss	17		16
Net periodic benefit cost	$	7	$	10
Other Postretirement Benefit Plan
Interest cost	$	2	$	2
Amortization of net gain	(3)		(4)
Net periodic benefit credit	$	(1)	$	(2)

1.The decrease in service cost is due to the freeze of pension benefits, effective December 31, 2023.