Pension and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2021

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

The following table summarizes the components of net periodic pension cost and the cost of other postretirement benefits for the periods presented:

	Three Months Ended September 30,
	United States Pension Benefits				Foreign Pension Benefits				Other Postretirement Benefits
Millions of dollars	2021		2020		2021		2020		2021		2020
Service cost	$	1	$	1	$	1	$	1	$	—	$	1
Interest cost	20		25		4		4		1		1
Expected return on plan assets	$	(39)	$	(42)	$	(9)	$	(7)	$	—	$	—
Amortization:
Actuarial loss	$	17	$	15	$	4	$	3	$	—	$	—
Prior service credit	—		—		—		—		(12)		(12)
Settlement and curtailment (gain) loss	2		—		—		1		—		—
Net periodic benefit cost (credit)	$	1	$	(1)	$	—	$	2	$	(11)	$	(10)

	Nine Months Ended September 30,
	United States Pension Benefits				Foreign Pension Benefits				Other Postretirement Benefits
Millions of dollars	2021		2020		2021		2020		2021		2020
Service cost	$	2	$	2	$	4	$	4	$	—	$	4
Interest cost	58		74		11		13		4		7
Expected return on plan assets	(118)		(124)		(26)		(22)		—		—
Amortization:
Actuarial loss	52		46		14		9		—		—
Prior service credit	—		—		—		—		(35)		(16)
Settlement and curtailment (gain) loss	5		—		—		1		—		(4)
Net periodic benefit cost (credit)	$	(1)	$	(2)	$	3	$	5	$	(31)	$	(9)

The following table summarizes the net periodic cost recognized in operating profit and interest and sundry (income) expense for the periods presented:

	Three Months Ended September 30,
	United States Pension Benefits				Foreign Pension Benefits				Other Postretirement Benefits
Millions of dollars	2021		2020		2021		2020		2021		2020
Operating profit (loss)	$	1	$	1	$	1	$	1	$	—	$	1
Interest and sundry (income) expense	—		(2)		(1)		1		(11)		(11)
Net periodic benefit cost	$	1	$	(1)	$	—	$	2	$	(11)	$	(10)

	Nine Months Ended September 30,
	United States Pension Benefits				Foreign Pension Benefits				Other Postretirement Benefits
Millions of dollars	2021		2020		2021		2020		2021		2020
Operating profit (loss)	$	2	$	2	$	4	$	4	$	—	$	4
Interest and sundry (income) expense	(3)		(4)		(1)		1		(31)		(13)
Net periodic benefit cost	$	(1)	$	(2)	$	3	$	5	$	(31)	$	(9)