PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022		Mar 31, 2021
Defined Benefit Pension Plans
Service cost	$	9	$	8
Interest cost	23		19
Expected return on plan assets	(57)		(51)
Amortization of net loss	27		30
Curtailment gain	—		(7)
Net periodic benefit cost (credit)	$	2	$	(1)
Other Postretirement Benefit Plan
Interest cost	$	1	$	1
Amortization of net gain	(2)		(1)
Net periodic benefit cost (credit)	$	(1)	$	—