Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2017

Components of Net Periodic Benefit Cost

The Company’s net periodic benefit cost includes the following components (in millions):

	Pension Benefits				Other Postretirement Benefits
	Three Months  Ended September 30,				Three Months  Ended September 30,
	2017		2016		2017		2016
Service cost	$	48	$	29	$	4	$	4
Interest cost		55		50		16		22
Expected return on plan assets		(61)		(54)		—		—
Amortization of unrecognized (gain) loss and prior service cost (credit)		32		19		(18)		(13)
Settlement loss		3		2		—		—
Curtailment gain		—		—		—		(47)
Total	$	77	$	46	$	2	$	(34)
	Pension Benefits				Other Postretirement Benefits
	Nine Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Service cost	$	146	$	84	$	10	$	14
Interest cost		165		151		50		66
Expected return on plan assets		(182)		(162)		(1)		(1)
Amortization of unrecognized (gain) loss and prior service cost (credit)		95		57		(54)		(40)
Settlement loss		5		4		—		—
Curtailment gain		—		—		—		(47)
Total	$	229	$	134	$	5	$	(8)

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,
	2017		2016		2017		2016
Share-based compensation expense	$	10	$	23	$	66	$	36
	September 30, 2017		December 31, 2016
Unrecognized share-based compensation	$	90	$	65