PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS (Tables)

9 Months Ended

Sep. 30, 2019

Retirement Benefits [Abstract]

Net Periodic Benefit Cost Relating to Pension and Other Postemployment Employee Benefit Plans

The following is a summary of net periodic benefit cost relating to our pension and OPEB plans.

	Three months ended September 30,				Nine months ended September 30,
(in millions)	2019		2018		2019		2018
Pension benefits
Service cost	$	18	$	23	$	56	$	70
Interest cost	47		45		137		136
Expected return on plan assets	(74)		(78)		(214)		(235)
Amortization of net losses and prior service costs	15		24		44		72
Net periodic pension benefit cost	$	6	$	14	$	23	$	43
OPEB
Interest cost	$	2	$	2	$	6	$	6
Amortization of net loss and prior service credit	(7)		(6)		(21)		(18)
Net periodic OPEB cost	$	(5)	$	(4)	$	(15)	$	(12)