Pension and Postretirement Plans (Tables)

12 Months Ended

Dec. 31, 2022

Retirement Benefits [Abstract]

Schedule of Reconciliation of Projected Benefit Obligations and Plan Assets

The following table provides a reconciliation of the projected benefit obligations and plan assets for our pension plans and accumulated benefit obligations for our other postretirement benefit plans:

	Millions of Dollars
	Pension Benefits					Other Benefits
	2022			2021		2022	2021
	U.S.		Int’l.	U.S.	Int’l.
Change in Benefit Obligations
Benefit obligations at January 1	$	3,033	1,409	3,405	1,480	197	213
Service cost	123		28	146	36	4	5
Interest cost	100		21	81	19	5	5
Plan participant contributions	—		2	—	2	6	6
Net actuarial gain	(528)		(502)	(82)	(37)	(37)	(13)
Benefits paid	(519)		(44)	(517)	(44)	(19)	(19)
Settlements	—		(101)	—	—	—	—
Foreign currency exchange rate change	—		(138)	—	(47)	—	—
Benefit obligations at December 31	$	2,209	675	3,033	1,409	156	197
Change in Fair Value of Plan Assets
Fair value of plan assets at January 1	$	2,547	1,280	2,738	1,212	—	—
Actual return on plan assets	(375)		(329)	289	114	—	—
Company contributions	125		23	37	27	13	13
Plan participant contributions	—		2	—	2	6	6
Benefits paid	(519)		(44)	(517)	(44)	(19)	(19)
Settlements	—		(101)	—	—	—	—
Foreign currency exchange rate change	—		(124)	—	(31)	—	—
Fair value of plan assets at December 31	$	1,778	707	2,547	1,280	—	—
Funded Status at December 31	$	(431)	32	(486)	(129)	(156)	(197)

Schedule of Amounts Recognized in the Consolidated Balance Sheet

Amounts recognized in the consolidated balance sheet for our pension and other postretirement benefit plans at December 31 include:

	Millions of Dollars
	Pension Benefits					Other Benefits
	2022			2021		2022	2021
	U.S.		Int’l.	U.S.	Int’l.
Amounts Recognized in the Consolidated Balance Sheet
Noncurrent assets	$	—	140	—	51	—	—
Current liabilities	(50)		—	(25)	—	(15)	(15)
Noncurrent liabilities	(381)		(108)	(461)	(180)	(141)	(182)
Total recognized	$	(431)	32	(486)	(129)	(156)	(197)

Schedule of Before Tax Amounts Unrecognized in Net Periodic Benefit Cost Included in Accumulated Other Comprehensive Income

Included in accumulated other comprehensive loss at December 31 were the following before-tax amounts that had not been recognized in net periodic benefit cost:

	Millions of Dollars
	Pension Benefits					Other Benefits
	2022			2021		2022	2021
	U.S.		Int’l.	U.S.	Int’l.
Unrecognized net actuarial loss (gain)	$	159	(27)	251	130	(59)	(24)
Unrecognized prior service credit	—		—	—	(1)	—	(2)

Schedule of Sources of Change in Other Comprehensive Income (Loss)

Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss):

	Millions of Dollars
	Pension Benefits					Other Benefits
	2022			2021		2022	2021
	U.S.		Int’l.	U.S.	Int’l.
Sources of Change in Other Comprehensive Income
Net actuarial gain arising during the period	$	18	136	211	92	37	13
Amortization of net actuarial loss (gain) and settlements	74		21	101	25	(2)	(1)
Amortization of prior service credit	—		(1)	—	(1)	(2)	(2)
Total recognized in other comprehensive income	$	92	156	312	116	33	10

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets

Information for U.S. and international pension plans with an accumulated benefit obligation in excess of plan assets at December 31 was:

	Millions of Dollars
	Pension Benefits
	2022			2021
	U.S.		Int’l.	U.S.	Int’l.
Accumulated benefit obligations	$	2,055	114	2,770	410
Fair value of plan assets	1,778		13	2,547	248

Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets

Information for U.S. and international pension plans with a projected benefit obligation in excess of plan assets at December 31 was:

	Millions of Dollars
	Pension Benefits
	2022			2021
	U.S.		Int’l.	U.S.	Int’l.
Projected benefit obligations	$	2,209	121	3,033	428
Fair value of plan assets	1,778		13	2,547	248

Schedule of Components of Net Periodic Benefit Cost

Components of net periodic benefit cost for all defined benefit plans are presented in the table below:

	Millions of Dollars
	Pension Benefits							Other Benefits
	2022			2021		2020		2022	2021	2020
	U.S.		Int’l.	U.S.	Int’l.	U.S.	Int’l.
Components of Net Periodic Benefit Cost
Service cost	$	123	28	146	36	138	28	4	5	5
Interest cost	100		21	81	19	91	22	5	5	7
Expected return on plan assets	(135)		(56)	(160)	(59)	(159)	(50)	—	—	—
Amortization of prior service credit	—		(1)	—	(1)	—	(1)	(2)	(2)	(2)
Amortization of net actuarial loss (gain)	21		12	46	25	70	16	(2)	(1)	—
Settlements	53		9	55	—	61	—	—	—	—
Net periodic benefit cost*	$	162	13	168	20	201	15	5	7	10

* Included in the “Operating expenses” and “Selling, general and administrative expenses” line items on our consolidated statement of operations.

Schedule of Weighted-Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Costs

The following weighted-average assumptions were used to determine benefit obligations and net periodic benefit costs for years ended December 31:

	Pension Benefits					Other Benefits
	2022			2021		2022	2021
	U.S.		Int’l.	U.S.	Int’l.
Assumptions Used to Determine Benefit Obligations:
Discount rate	5.70	%	4.64	2.95	1.60	5.70	2.90
Rate of compensation increase	4.30		3.32	4.30	3.05	—	—
Interest crediting rate on cash balance plan	3.88		—	2.05	—	—	—
Assumptions Used to Determine Net Periodic Benefit Cost:
Discount rate	3.94	%	1.65	2.70	1.27	2.90	2.30
Expected return on plan assets	6.50		4.90	6.50	4.86	—	—
Rate of compensation increase	4.30		3.05	4.27	3.01	—	—
Interest crediting rate on cash balance plan	2.59		—	2.05	—	—	—

Schedule of Fair Values of Pension Plan Assets

The fair values of our pension plan assets at December 31, by asset class, were:

	Millions of Dollars
	U.S.					International
	Level 1		Level 2	Level 3	Total	Level 1	Level 2	Level 3	Total
2022
Equity securities	$	239	—	—	239	—	—	—	—
Government debt securities	268		—	—	268	—	—	—	—
Corporate debt securities	—		89	—	89	—	—	—	—
Cash and cash equivalents	19		—	—	19	64	—	—	64
Insurance contracts	—		—	—	—	—	—	13	13
Total assets in the fair value hierarchy	526		89	—	615	64	—	13	77
Common/collective trusts measured at NAV					841				567
Real estate and infrastructure investments measured at NAV					322				63
Total	$	526	89	—	1,778	64	—	13	707

	Millions of Dollars
	U.S.					International
	Level 1		Level 2	Level 3	Total	Level 1	Level 2	Level 3	Total
2021
Equity securities	$	385	—	—	385	—	—	—	—
Government debt securities	427		—	—	427	—	—	—	—
Corporate debt securities	—		131	—	131	—	—	—	—
Cash and cash equivalents	20		—	—	20	6	—	—	6
Insurance contracts	—		—	—	—	—	—	13	13
Total assets in the fair value hierarchy	832		131	—	963	6	—	13	19
Common/collective trusts measured at NAV					1,266				1,158
Real estate and infrastructure investments measured at NAV					318				103
Total	$	832	131	—	2,547	6	—	13	1,280

Expected Benefit Payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid to plan participants in the years indicated:

	Millions of Dollars
	Pension Benefits			Other Benefits
	U.S.		Int’l.
2023	$	266	21	17
2024	218		23	17
2025	217		25	17
2026	220		27	17
2027	231		28	17
2028-2032	1,087		170	78