PENSION AND POSTRETIREMENT BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The net periodic benefit cost of defined benefit pension plans includes:

	Three Months Ended September 30,				Nine Months Ended September 30,
Dollars in Millions	2020		2019		2020		2019
Service cost – benefits earned during the year	$	12	$	6	$	36	$	18
Interest cost on projected benefit obligation	11		20		30		101
Expected return on plan assets	(26)		(39)		(73)		(173)
Amortization of prior service credits	(1)		(1)		(3)		(3)
Amortization of net actuarial loss	12		14		33		49
Curtailments and settlements	3		1,550		7		1,643
Net periodic pension benefit cost	$	11	$	1,550	$	30	$	1,635