Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2018

Employee-related Liabilities [Abstract]

Components of Net Periodic Benefit Cost

The Company's net periodic benefit cost includes the following components for the three months ended September 30 (in millions):

	Pension Benefits						Other Postretirement Benefits						Affected Line Item in the Statements of Consolidated Operations
	2018			2017			2018			2017
Service cost	$	57		$	48		$	3		$	4		Salaries and related costs
Interest cost	54			55			16			16			Miscellaneous, net
Expected return on plan assets	(73		)	(61		)	(1		)	—			Miscellaneous, net
Amortization of unrecognized (gain) loss and prior service cost (credit)	32			32			(17		)	(18		)	Miscellaneous, net
Settlement loss	—			3			—			—			Miscellaneous, net
Total	$	70		$	77		$	1		$	2

The Company's net periodic benefit cost includes the following components for the nine months ended September 30 (in millions):

	Pension Benefits						Other Postretirement Benefits						Affected Line Item in the Statements of Consolidated Operations
	2018			2017			2018			2017
Service cost	$	171		$	146		$	9		$	10		Salaries and related costs
Interest cost	162			165			46			50			Miscellaneous, net
Expected return on plan assets	(219		)	(182		)	(1		)	(1		)	Miscellaneous, net
Amortization of unrecognized (gain) loss and prior service cost (credit)	97			95			(52		)	(54		)	Miscellaneous, net
Settlement loss	—			5			—			—			Miscellaneous, net
Total	$	211		$	229		$	2		$	5

Share-Based Compensation Expense

The table below presents information related to share-based compensation (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Share-based compensation expense	$	29	$	10	$	73	$	66
	September 30, 2018		December 31, 2017
Unrecognized share-based compensation	$	69	$	53