PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2021

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 2021			SEPTEMBER 2020			SEPTEMBER 2021			SEPTEMBER 2020
Service cost	$	11		$	9		$	32		$	27
Interest cost		24			35			73			104
Expected return on plan assets		(51	)		(59	)		(153	)		(175	)
Amortization of actuarial loss		29			31			86			92
Amortization of prior service cost		1			1			2			3
Total net periodic benefit cost – pension	$	14		$	17		$	40		$	51

	OTHER POST-EMPLOYMENT BENEFITS
	QUARTER ENDED					YEAR-TO-DATE ENDED
DOLLAR AMOUNTS IN MILLIONS	SEPTEMBER 2021		SEPTEMBER 2020			SEPTEMBER 2021		SEPTEMBER 2020
Interest cost	$	—	$	1		$	2	$	3
Amortization of actuarial loss		2		1			4		2
Amortization of prior service credit		—		(1	)		—		(1	)
Total net periodic benefit cost – other post-employment benefits	$	2	$	1		$	6	$	4