RETIREMENT PLANS (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Net Periodic Pension Expense for Qualified and Nonqualified U.S. Defined Benefit Plans [Table Text Block]

Net periodic pension (income) expense for our qualified and nonqualified U.S. defined benefit plans comprised the following: 

	Three Months Ended September 30,				Nine Months Ended September 30,
In millions	2021		2020		2021		2020
Service cost	$	26	$	21	$	78	$	64
Interest cost	84		98		251		294
Expected return on plan assets	(177)		(167)		(543)		(501)
Actuarial loss	35		51		114		152
Amortization of prior service cost	5		5		16		15
Net periodic pension (income) expense	$	(27)	$	8	$	(84)	$	24