Post-Employment Benefits (Tables)

6 Months Ended

Jun. 30, 2019

Schedule of components of the net periodic benefit cost for the entity's major defined benefit plans and post-employment medical and dental benefit plans

	Defined Benefit Plans								Medical and Dental Plans
	Three Months				Six Months				Three Months				Six Months
(in millions)	Ended June 30				Ended June 30				Ended June 30				Ended June 30
	2019		2018		2019		2018		2019		2018		2019		2018
Service cost - benefits earned during the period	$	61	$	67	$	125	$	145	$	6	$	6	$	12	$	13
Interest cost on projected benefit obligations		85		77		169		155		13		12		26		24
Expected return on plan assets		(178)		(171)		(356)		(342)		(7)		(8)		(14)		(16)
Net amortization of:
Actuarial loss, net		33		49		66		103		5		9		11		17
Prior service cost (credit)		1		1		1		1		(8)		(12)		(16)		(23)
Net cost - continuing operations	$	2	$	23	$	5	$	62	$	9	$	7	$	19	$	15