PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2020

Pension And Other Postretirement Benefit Expense [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost are:

	PENSION
	QUARTER ENDED						YEAR-TO-DATE ENDED
DOLLAR AMOUNTS IN MILLIONS	SEPTEMBER 2020			SEPTEMBER 2019			SEPTEMBER 2020			SEPTEMBER 2019
Service cost	$	9		$	8		$	27		$	24
Interest cost		35			39			104			122
Expected return on plan assets		(59	)		(54	)		(175	)		(170	)
Amortization of actuarial loss		31			27			92			85
Amortization of prior service cost		1			1			3			3
Settlement charge		—			—			—			449
Total net periodic benefit cost - pension	$	17		$	21		$	51		$	513

	OTHER POSTRETIREMENT BENEFITS
	QUARTER ENDED						YEAR-TO-DATE ENDED
DOLLAR AMOUNTS IN MILLIONS	SEPTEMBER 2020			SEPTEMBER 2019			SEPTEMBER 2020			SEPTEMBER 2019
Interest cost	$	1		$	2		$	3		$	5
Amortization of actuarial loss		1			1			2			5
Amortization of prior service credit		(1	)		(1	)		(1	)		(4	)
Total net periodic benefit cost - other postretirement benefits	$	1		$	2		$	4		$	6