PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)

6 Months Ended

Jun. 30, 2018

Components of Net Periodic Benefit Costs

The components of net periodic benefit cost are:

	PENSION
	QUARTER ENDED						YEAR-TO-DATE ENDED
DOLLAR AMOUNTS IN MILLIONS	JUNE 2018			JUNE 2017			JUNE 2018			JUNE 2017
Service cost	$	8		$	7		$	18		$	17
Interest cost	59			66			119			132
Expected return on plan assets	(100		)	(103		)	(200		)	(205		)
Amortization of actuarial loss	52			42			113			97
Amortization of prior service cost	1			1			2			2
Total net periodic benefit cost - pension	$	20		$	13		$	52		$	43

	OTHER POSTRETIREMENT BENEFITS
	QUARTER ENDED						YEAR-TO-DATE ENDED
DOLLAR AMOUNTS IN MILLIONS	JUNE 2018			JUNE 2017			JUNE 2018			JUNE 2017
Interest cost	$	1		$	2		$	3		$	4
Amortization of actuarial loss	2			2			4			4
Amortization of prior service credit	(2		)	(2		)	(4		)	(4		)
Total net periodic benefit cost - other postretirement benefits	$	1		$	2		$	3		$	4