PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Net Periodic Benefit Cost for All Significant Plans

Net Periodic Benefit Cost for All Significant Plans	Three Months Ended
In millions	Mar 31, 2019			Mar 31, 2018
Defined Benefit Pension Plans:
Service cost	$	9		$	10
Interest cost	36			32
Expected return on plan assets	(53		)	(55		)
Amortization of net loss	21			24
Net periodic benefit cost	$	13		$	11
Other Postretirement Benefits:
Interest cost	$	2		$	2
Amortization of net gain	(2		)	(2		)
Net periodic benefit cost	$	—		$	—