Retirement and Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2018

Retirement and Postretirement Benefit Plans

Components of the net periodic benefit costs

The following tables set forth the components of the net periodic benefit costs for Occidental’s defined benefit plans for the three and six months ended June 30, 2018, and 2017 (in millions):

Three months ended  June 30	2018				2017
	Pension		Postretirement		Pension		Postretirement
Net Periodic Benefit Costs	Benefit		Benefit		Benefit		Benefit
Service cost	$	2	$	6	$	2	$	5
Interest cost		4		9		4		10
Expected return on plan assets		(6)		—		(6)		—
Recognized actuarial loss		1		6		2		4
Total	$	1	$	21	$	2	$	19

Six months ended June 30	2018				2017
	Pension		Postretirement		Pension		Postretirement
Net Periodic Benefit Costs	Benefit		Benefit		Benefit		Benefit
Service cost	$	4	$	12	$	4	$	10
Interest cost		8		18		8		20
Expected return on plan assets		(12)		—		(12)		—
Recognized actuarial loss		2		10		4		8
Total	$	2	$	40	$	4	$	38