Retirement and Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Components of the net periodic benefit costs

The following table sets forth the components of the net periodic benefit costs for Occidental’s defined benefit plans for the three months ended March 31, 2019, and 2018 (in millions):

Three months ended March 31	2019						2018
Net Periodic Benefit Costs	Pension Benefit			Postretirement Benefit			Pension Benefit			Postretirement Benefit
Service cost	$	1		$	6		$	2		$	6
Interest cost	4			8			4			9
Expected return on plan assets	(5		)	—			(6		)	—
Recognized actuarial loss	2			2			1			4
Recognized prior service cost	—			(2		)	—			—
Total	$	2		$	14		$	1		$	19