PENSION AND POSTRETIREMENT BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2019

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	2019			2018			2019			2018
Service cost – benefits earned during the year	$	6		$	6		$	18		$	20
Interest cost on projected benefit obligation	20			50			101			146
Expected return on plan assets	(39		)	(97		)	(173		)	(315		)
Amortization of prior service credits	(1		)	(1		)	(3		)	(3		)
Amortization of net actuarial loss	14			17			49			57
Curtailments and settlements	1,550			26			1,643			95
Net periodic pension benefit cost	$	1,550		$	1		$	1,635		$	—