Pension and other postretirement benefits (Tables)

12 Months Ended

Dec. 31, 2024

Retirement Benefits [Abstract]

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan

The change in benefit obligation, change in plan assets, funded status of pension and other postretirement benefit (OPEB) plans, and amounts recognized in the Consolidated Balance Sheets were:

	Pension Plans				OPEB Plans (i)
	2024		2023		2024	2023
in $ millions	U.S.	Non-U.S.	U.S.	Non-U.S.
Change in benefit obligation:
Benefit obligation at beginning of year	496	2,414	497	2,105	105	100
Service cost	2	39	1	31	3	2
Interest cost	24	81	24	86	5	5
Amendments	–	–	–	(1)	–	–
Actuarial (gains) and losses	(24)	(28)	9	178	(10)	3
Benefits paid	(34)	(104)	(35)	(89)	(5)	(5)
Plan participant contributions	–	10	–	9	–	–
Curtailments	–	(4)	–	–	–	–
Settlements	–	(7)	–	(4)	–	–
Net transfer in/(out) (including the effect of any business combinations/divestitures)	–	27	–	–	(1)	–
Foreign currency rate changes	–	(145)	–	99	(2)	–
Benefit obligation at end of year	464	2,283	496	2,414	95	105
Change in plan assets
Fair value of plan assets at beginning of year	449	2,524	446	2,316	–	–
Actual gain on plan assets	17	77	37	143	–	–
Employer contributions	2	36	1	38	5	5
Plan participant contributions	–	10	–	9	–	–
Benefits paid	(34)	(104)	(35)	(89)	(5)	(5)
Settlements	–	(7)	–	(4)	–	–
Net transfer in (including effect of any business combinations/divestitures)	–	82	–	–	–	–
Foreign currency rate changes	–	(155)	–	111	–	–
Fair value of plan assets at end of year	434	2,463	449	2,524	–	–
Reconciliation of funded status:
Fair value of plan assets	434	2,463	449	2,524	–	–
Benefit obligation	464	2,283	496	2,414	95	105
Funded status	(30)	180	(47)	110	(95)	(105)
Accumulated Benefit Obligation	464	2,231	496	2,349
Amounts recognized in the Consolidated Balance Sheets:
Noncurrent assets	–	290	–	271	–	–
Current liabilities	(2)	(4)	(2)	(4)	(6)	(6)
Noncurrent liabilities	(28)	(106)	(45)	(111)	(89)	(98)
Liabilities held for sale	–	–	–	(46)	–	(1)
Funded status at end of year	(30)	180	(47)	110	(95)	(105)
Net actuarial (loss) gain	(45)	(190)	(68)	(225)	42	35
Prior service (cost) credit	(1)	74	(1)	92	2	3
Total accumulated other comprehensive (loss) income	(46)	(116)	(69)	(133)	44	38

(i)    Includes a benefit obligation of $8 million and $11 million related to non-U.S. OPEB plans at December 31, 2024 and 2023, respectively.

Schedule of Pension Plans where Accumulated Benefit Obligation (“ABO”) Projected Benefit Obligation (“PBO”) Exceeds the Fair Value of Respective Plan Assets

The pension and other postretirement plans for which their accumulated benefit obligation, projected benefit obligation or accumulated postretirement benefit obligation exceeds the fair value of their respective plan assets at December 31 were:

	U.S. Plans		Non-U.S. Plans
in $ millions	2024	2023	2024	2023
Pension plans with projected benefit obligations in excess of plan assets:
Projected benefit obligation	464	496	565	580
Fair value of plan assets	434	449	458	421
Pension plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligation	464	496	147	527
Fair value of plan assets	434	449	61	394
Other postretirement plans with accumulated postretirement benefit obligations in excess of plan assets:
Accumulated postretirement benefit obligation	–	–	6	9
Fair value of plan assets	–	–	–	–

Schedule of Net Benefit Costs

The total retirement benefit expense recognized in the Consolidated Statements of Income for the years ended December 31 were:

in $ millions	2024	2023	2022
Total defined contribution expense	345	320	307
Total defined benefit expense	34	31	30
Total expense within the Consolidated Statements of Income	379	351	337

The components of net periodic benefit cost (income) recognized in the Consolidated Statements of Income for the years ended December 31 were:

	Pension Plans						OPEB Plans (ii)
	U.S.			Non-U.S.
in $ millions	2024	2023	2022	2024	2023	2022	2024	2023	2022
Service cost	2	1	2	39	31	55	3	2	3
Interest cost	24	24	18	81	86	43	5	5	3
Expected return on assets	(21)	(20)	(30)	(87)	(91)	(72)	–	–	–
Amortization of:
Prior service cost (credit)	–	–	1	(12)	(11)	(11)	–	–	–
Actuarial loss (gain)	2	3	2	6	4	15	(2)	(3)	–
Curtailment loss (gain)	–	–	3	(3)	–	–	–	(1)	–
Settlement (gain) loss (i)	–	–	–	(3)	1	(2)	–	–	–
Net periodic benefit cost (income) (iii)	7	8	(4)	21	20	28	6	3	6

(i)    Settlement gain of $3 million relates to pension plans divested as part of the sale of the Company's Lime operations in Europe and is included in gain on divestitures, within Other nonoperating income (expense), net.

(ii)    Includes the net periodic benefit cost of $nil million, $nil million and $1 million related to non-U.S. OPEB plans for the years ended December 31, 2024, 2023, and 2022 respectively.

(iii)    Service cost is included within Cost of revenues and Selling, general and administrative expenses while all other cost components are recorded within Other nonoperating income (expense), net.

The changes in plan assets and benefit obligations that were recognized in Other comprehensive (income) loss for the years ended December 31 were:

	Pension Plans						OPEB Plans (i)
	U.S.			Non-U.S.
in $ millions	2024	2023	2022	2024	2023	2022	2024	2023	2022
Net actuarial (gain) loss	(20)	(8)	(1)	(17)	126	(292)	(10)	3	(32)
Prior service cost (credit)	–	–	2	–	(1)	(2)	–	–	–
Amortization or curtailment recognition of prior service (cost) credit	–	–	(4)	12	11	11	–	–	–
Amortization or settlement recognition of net (loss) gain	(2)	(3)	(2)	(5)	(4)	(13)	2	3	–
Foreign currency exchange effects	–	–	–	(4)	(2)	(27)	–	–	–
Amount recognized in other comprehensive (income) loss (i)	(22)	(11)	(5)	(14)	130	(323)	(8)	6	(32)
Amount recognized in net periodic pension benefit cost (income) and other comprehensive (income) loss	(15)	(3)	(9)	3	150	(295)	(2)	9	(26)

(i)    Includes an amount recognized in Other comprehensive (income) loss of $nil million, $1 million and $(2) million related to non-U.S. OPEB plans for the years ended December 31, 2024, 2023, and 2022, respectively.

Schedule of Weighted Average Assumptions

The weighted average assumptions used to determine net periodic benefit cost (income) for the years ended December 31 were:

	Pension Plans												OPEB Plans
	U.S.						Non-U.S.
	2024		2023		2022		2024		2023		2022		2024		2023		2022
Discount rate	4.95	%	5.20	%	2.70	%	3.49	%	4.13	%	1.54	%	4.86	%	5.08	%	2.59	%
Rate of compensation increase	N/A		N/A		3.50	%	3.22	%	3.22	%	2.74	%	2.75	%	2.80	%	2.22	%
Expected long‐term rate of return on plan assets	5.50	%	5.50	%	5.50	%	3.62	%	4.04	%	2.54	%	N/A		N/A		N/A
Interest crediting rates	N/A		N/A		N/A		1.60	%	1.50	%	2.25	%	N/A		N/A		N/A

The weighted average assumptions used to determine the benefit obligation at December 31 were:

	Pension Plans								OPEB Plans
	U.S.				Non-U.S.
	2024		2023		2024		2023		2024		2023
Discount rate	5.55	%	4.95	%	3.41	%	3.49	%	5.34	%	4.86	%
Rate of compensation increase	N/A		N/A		2.88	%	3.22	%	2.33	%	2.75	%

Schedule of Allocation of Plan Assets

The target allocation ranges and fair values by asset class at December 31 were:

	Pension Plans
	Target allocation ranges
	U.S. Plans	Non-U.S. Plans
	2024 (%)
Cash and cash equivalents	–	0-5
Equity instruments (i)	10-30	15-25
Debt instruments (ii)	65-85	25-40
Real estate	–	5-10
Derivatives	–	–
Investment funds	0-15	0-5
Assets held by insurance company	–	0-5
Other	–	–

(i)     For U.S. pension plans, equity instruments with a total allocation range of 10-30% are made up of 10-30% in developed markets’ diversified equity instruments and 10-30% in emerging markets’ diversified equity instruments. For non-U.S. pension plans, equity instruments with a total allocation range of 15-25% are made up of 16-24% in developed markets’ diversified equity instruments and 1-2% in emerging markets’ diversified equity instruments.

(ii)    For U.S. pension plans, debt instruments with a total allocation range of 65-85% are made up of 65-85% in non-government debt instruments and 65-85% in government fixed interest instruments. For non-U.S. pension plans, debt instruments with a total allocation range of 25-40% are made up of 24-35% in non-government debt instruments, 32-44% in government fixed interest instruments, 23-31% in government inflation-protected bonds, 9-16% in asset-backed instruments, 9-16% in inflation-protected bonds and 9-16% in structured debt.

The Company’s asset allocations by asset category at December 31 were:

	Pension Plans
	Fair Values
	2024
	U.S. Plans				Non-U.S. Plans
in $ millions	Level 1	Level 2	Level 3	Total	Level 1	Level 2	Level 3	Total
Cash and cash equivalents	3	–	–	3	32	22	–	54
Equity instruments (i)	–	87	–	87	499	59	–	558
Debt instruments (ii)	–	326	–	326	1,226	211	–	1,437
Real estate	–	–	–	–	111	81	8	200
Derivatives	–	–	–	–	8	(23)	–	(15)
Investment funds	16	–	–	16	87	21	–	108
Assets held by insurance company	–	–	–	–	–	2	105	107
Other	–	–	2	2	3	3	8	14
Total	19	413	2	434	1,966	376	121	2,463

(i)    For U.S. pension plans, equity instruments of $87 million are made up of $78 million in developed markets’ diversified equity instruments and $9 million in emerging markets’ diversified equity instruments. For non-U.S. pension plans, equity instruments of $558 million are made up of $521 million in developed markets’ diversified equity instruments and $37 million in emerging markets’ diversified equity instruments.

(ii)    For U.S. pension plans, debt instruments of $326 million are made up of $226 million in non-government debt instruments and $100 million in government fixed interest instruments. For non-U.S. pension plans, debt instruments of $1,437 million are made up of $245 million in non-government debt instruments, $721 million in government fixed interest instruments, $434 million in government inflation-protected bonds and $37 million in asset-backed instruments.

	Pension Plans
	Fair Values
	2023
	U.S. Plans				Non-U.S. Plans
in $ millions	Level 1	Level 2	Level 3	Total	Level 1	Level 2	Level 3	Total
Cash and cash equivalents	3	–	–	3	50	15	–	65
Equity instruments (i)	–	90	–	90	462	56	–	518
Debt instruments (ii)	–	341	–	341	1,310	179	–	1,489
Real estate	–	–	–	–	97	82	14	193
Derivatives	–	–	–	–	12	2	–	14
Investment funds	11	–	–	11	85	13	–	98
Assets held by insurance company	–	–	–	–	–	2	117	119
Other	–	–	4	4	1	19	8	28
Total	14	431	4	449	2,017	368	139	2,524

(i)     For U.S. pension plans, equity instruments of $90 million are made up of $79 million in developed markets’ diversified equity instruments and $11 million in emerging markets’ diversified equity instruments. For non-U.S. pension plans, equity instruments of $518 million are made up of $486 million in developed markets’ diversified equity instruments and $32 million in emerging markets’ diversified equity instruments.

(ii)    For U.S. pension plans, debt instruments of $341 million are made up of $233 million in non-government debt instruments and $108 million in government fixed interest instruments. For non-U.S. pension plans, debt instruments of $1,489 million are made up of $251 million in non-government debt instruments, $400 million in government fixed interest instruments, $763 million in government inflation-protected bonds, $34 million in asset-backed instruments and $41 million in inflation-protected bonds.

Schedule of Reconciliation for Pension Plans by Asset

The Level 3 reconciliation for pension plans by asset class for the years ended December 31, 2024 and 2023 were:

	U.S. Plans
in $ millions	Beginning balance on 1/1/2024	Actual return on plan assets, relating to assets still held at reporting date	Purchases, sales and settlements	Transfer out of Level 3	Change due to exchange rate changes	Ending balance on 12/31/2024
Asset Class
Other	4	–	–	(2)	–	2
Total	4	–	–	(2)	–	2

	Non-U.S. Plans
in $ millions	Beginning balance on 1/1/2024	Actual return on plan assets, relating to assets still held at reporting date	Purchases, sales and settlements	Transfer out of Level 3	Change due to exchange rate changes	Ending balance on 12/31/2024
Asset Class
Real estate	14	–	(6)	–	–	8
Assets held by insurance company	117	6	(9)	–	(9)	105
Other	8	–	–	–	–	8
Total	139	6	(15)	–	(9)	121

	U.S. Plans
in $ millions	Beginning balance on 1/1/2023	Actual return on plan assets, relating to assets still held at reporting date	Purchases, sales and settlements	Transfer (out of) Level 3	Ending balance on 12/31/2023
Asset Class
Investment funds	11	–	–	(11)	–
Other	8	1	(1)	(4)	4
Total	19	1	(1)	(15)	4

	Non-U.S. Plans
in $ millions	Beginning balance on 1/1/2023	Actual return on plan assets, relating to assets still held at reporting date	Purchases, sales and settlements	Change due to exchange rate changes	Ending balance on 12/31/2023
Asset Class
Real estate	13	–	–	1	14
Assets held by insurance company	113	11	(10)	3	117
Other	6	2	–	–	8
Total	132	13	(10)	4	139

Schedule of Health Care Cost Trend Rates

The assumed healthcare cost trend rates at December 31 were:

	2024		2023		2022
Healthcare cost trend rate assumed for next year	6.55	%	6.85	%	1.76	%
Rate to which the cost trend rate gradually declines	3.80	%	3.70	%	3.70	%
Year the rate reaches the ultimate rate	2090		2090		2090

Schedule of Expected Benefit Payments

The following table presents the expected future benefit payments to be made over the next 10 years:

	Pension plans		OPEB
in $ millions	U.S.	Non-U.S.
2025	37	117	6
2026	37	115	6
2027	37	116	6
2028	37	114	6
2029	36	115	6
2030-2034	175	593	32