Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

Periodic benefit cost related to our defined benefit plans, net

The components of net periodic benefit cost related to our defined benefit plans were as follows (in millions):

	Pension Plans				Other Postretirement Benefit Plans
	2020		2019		2020		2019
Three months ended September 30
Service cost	$	35	$	29	$	1	$	1
Interest cost	21		25		3		2
Expected return on plan assets	(44)		(41)		—		—
Amortization of:
Net actuarial loss	18		10		—		—
Prior service credit	(4)		(5)		(2)		(2)
Special charges	2		—		—		—
Net periodic benefit cost	$	28	$	18	$	2	$	1
Nine months ended September 30
Service cost	$	105	$	89	$	4	$	3
Interest cost	64		74		7		8
Expected return on plan assets	(134)		(124)		—		—
Amortization of:
Net actuarial (gain) loss	55		30		—		(2)
Prior service credit	(14)		(14)		(5)		(6)
Special charges	3		2		—		1
Net periodic benefit cost	$	79	$	57	$	6	$	4