PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)

6 Months Ended

Jun. 30, 2019

Pension And Other Postretirement Benefit Expense [Abstract]

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 2019			JUNE 2018			JUNE 2019			JUNE 2018
Service cost	$	8		$	8		$	16		$	18
Interest cost		40			59			83			119
Expected return on plan assets		(54	)		(100	)		(116	)		(200	)
Amortization of actuarial loss		28			52			58			113
Amortization of prior service cost		1			1			2			2
Settlement charge		(6	)		—			449			—
Total net periodic benefit cost - pension	$	17		$	20		$	492		$	52

	OTHER POSTRETIREMENT BENEFITS
	QUARTER ENDED						YEAR-TO-DATE ENDED
DOLLAR AMOUNTS IN MILLIONS	JUNE 2019			JUNE 2018			JUNE 2019			JUNE 2018
Interest cost	$	1		$	1		$	3		$	3
Amortization of actuarial loss		2			2			4			4
Amortization of prior service credit		(2	)		(2	)		(3	)		(4	)
Total net periodic benefit cost - other postretirement benefits	$	1		$	1		$	4		$	3