Post-Employment Benefits (Tables)

3 Months Ended

Mar. 31, 2017

Post-Employment Benefits

The 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
(in millions)	March 31, 2017			March 31, 2016			March 31, 2017			March 31, 2016
Service cost - benefits earned during the period	$	72		$	67		$	7		$	7
Interest cost on projected benefit obligations	72			73			11			12
Expected return on plan assets	(152		)	(141		)	(8		)	(9		)
Net amortization of:
Actuarial loss, net	42			32			6			6
Prior service cost (credit)	—			—			(11		)	(11		)
Net cost — continuing operations	$	34		$	31		$	5		$	5