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Employee Benefits (Tables) | 12 Months Ended
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Dec. 31, 2023
Retirement Benefits [Abstract] |
Plan Assets and Benefit Obligations of Defined Benefit Pension Plans | The plan assets and benefit obligations of the defined benefit pension plans are measured at December 31 of each year.
| U.S. Plans |  | Non-U.S. Plans
(DOLLARS IN MILLIONS) | 2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021
Components of net periodic benefit cost |  |  |  |  |  |  |  |  |  |  |
Service cost for benefits earned(1) | $ | — |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 21 |  |  | $ | 34 |  |  | $ | 41 |
Interest cost on projected benefit obligation(2) | 25 |  |  | 15 |  |  | 71 |  |  | 36 |  |  | 17 |  |  | 10 |
Expected return on plan assets(2) | (31) |  |  | (21) |  |  | (106) |  |  | (47) |  |  | (42) |  |  | (55) |
Net amortization of deferrals(2) | 2 |  |  | 8 |  |  | 29 |  |  | (1) |  |  | 11 |  |  | 19 |
Settlements and curtailments(2) | — |  |  | — |  |  | — |  |  | (8) |  |  | — |  |  | (10) |
Net periodic benefit (income) cost | (4) |  |  | 3 |  |  | (5) |  |  | 1 |  |  | 20 |  |  | 5 |
Defined contribution and other retirement plans | 30 |  |  | 33 |  |  | 36 |  |  | 51 |  |  | 29 |  |  | 33 |
Total expense | $ | 26 |  |  | $ | 36 |  |  | $ | 31 |  |  | $ | 52 |  |  | $ | 49 |  |  | $ | 38 |
Changes in plan assets and benefit obligations recognized in OCI |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss (gain) | $ | 27 |  |  | $ | — |  |  |  |  | $ | 70 |  |  | $ | (143) |  |  |
Recognized actuarial (loss) gain | (1) |  |  | (8) |  |  |  |  | 9 |  |  | (12) |  |  |
Recognized prior service credit | — |  |  | — |  |  |  |  | 1 |  |  | 1 |  |  |
Currency translation adjustment | — |  |  | — |  |  |  |  | 9 |  |  | (27) |  |  |
Total loss (gain) recognized in OCI (before tax effects) | $ | 26 |  |  | $ | (8) |  |  |  |  | $ | 89 |  |  | $ | (181) |  |  |
_______________________ (1)Included as a component of Operating (loss) profit. (2)Included as a component of Other expense (income), net.
Amounts Expected to be Recognized in Net Periodic Cost |
| Postretirement Benefits
(DOLLARS IN MILLIONS) | 2023 |  | 2022 |  | 2021
Components of net periodic benefit cost |  |  |  |  |
Service cost for benefits earned | $ | — |  |  | $ | 1 |  |  | $ | 1 |
Interest cost on projected benefit obligation | 3 |  |  | 1 |  |  | 7 |
Net amortization and deferrals | (6) |  |  | (5) |  |  | (20) |
Total credit | $ | (3) |  |  | $ | (3) |  |  | $ | (12) |
Changes in plan assets and benefit obligations recognized in OCI |  |  |  |  |
Net actuarial loss (gain) | $ | 3 |  |  | $ | (16) |  |  |
Recognized actuarial loss | — |  |  | (1) |  |  |
Recognized prior service credit | 5 |  |  | 6 |  |  |
Total recognized in OCI (before tax effects) | $ | 8 |  |  | $ | (11) |  |  |
Weighted-Average Actuarial Assumption Used to Determine Expense | The weighted-average actuarial assumptions used to determine expense at December 31 of each year are:
| U.S. Plans |  | Non-U.S. Plans
2023 |  | 2022 |  | 2021 |  | 2023 |  | 2022 |  | 2021
Discount rate | 5.42 | % |  | 2.86 | % |  | 2.51 | % |  | 3.98 | % |  | 1.43 | % |  | 0.85 | %
Expected return on plan assets | 6.00 | % |  | 3.80 | % |  | 3.80 | % |  | 4.92 | % |  | 3.52 | % |  | 4.21 | %
Rate of compensation increase | 3.75 | % |  | 3.25 | % |  | 3.25 | % |  | 3.01 | % |  | 2.72 | % |  | 2.56 | %
Changes in Postretirement Benefit Obligation and Plan Assets | Changes in the postretirement benefit obligation and plan assets, as applicable, are detailed in the following table:
| U.S. Plans |  | Non-U.S. Plans |  | Postretirement Benefits
(DOLLARS IN MILLIONS) | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Benefit obligation at beginning of year | $ | 500 |  |  | $ | 662 |  |  | $ | 930 |  |  | $ | 1,501 |  |  | $ | 50 |  |  | $ | 66 |
Service cost for benefits earned | — |  |  | 1 |  |  | 21 |  |  | 34 |  |  | — |  |  | 1 |
Interest cost on projected benefit obligation | 25 |  |  | 15 |  |  | 36 |  |  | 17 |  |  | 3 |  |  | 2 |
Actuarial (gain) loss | 38 |  |  | (139) |  |  | 77 |  |  | (468) |  |  | 3 |  |  | (16) |
Adjustments for expense/tax contained in service cost | — |  |  | — |  |  | (2) |  |  | (2) |  |  | — |  |  | — |
Plan participants’ contributions | — |  |  | — |  |  | 4 |  |  | 4 |  |  | — |  |  | — |
Benefits paid | (39) |  |  | (38) |  |  | (33) |  |  | (32) |  |  | (3) |  |  | (2) |
Curtailments/settlements | (1) |  |  | — |  |  | (21) |  |  | (21) |  |  | — |  |  | — |
Translation adjustments | — |  |  | — |  |  | 45 |  |  | (104) |  |  | — |  |  | — |
Other | 1 |  |  | (1) |  |  | (1) |  |  | 1 |  |  | (1) |  |  | (1) |
Benefit obligation at end of year | $ | 524 |  |  | $ | 500 |  |  | $ | 1,056 |  |  | $ | 930 |  |  | $ | 52 |  |  | $ | 50 |
Fair value of plan assets at beginning of year | $ | 498 |  |  | $ | 649 |  |  | $ | 920 |  |  | $ | 1,320 |  |  |  |  |
Actual return on plan assets | 41 |  |  | (118) |  |  | 50 |  |  | (286) |  |  |  |  |
Employer contributions | 5 |  |  | 5 |  |  | 31 |  |  | 31 |  |  |  |  |
Participants’ contributions | — |  |  | — |  |  | 4 |  |  | 4 |  |  |  |  |
Benefits paid | (39) |  |  | (38) |  |  | (33) |  |  | (32) |  |  |  |  |
Settlements | — |  |  | — |  |  | (21) |  |  | (21) |  |  |  |  |
Translation adjustments | — |  |  | — |  |  | 44 |  |  | (96) |  |  |  |  |
Other | — |  |  | — |  |  | 5 |  |  | — |  |  |  |  |
Fair value of plan assets at end of year | $ | 505 |  |  | $ | 498 |  |  | $ | 1,000 |  |  | $ | 920 |  |  |  |  |
Funded status at end of year | $ | (19) |  |  | $ | (2) |  |  | $ | (56) |  |  | $ | (10) |  |  |  |  |
Amounts Recognized in Balance Sheet | The amounts recognized in the balance sheet are detailed in the following table:
| U.S. Plans |  | Non-U.S. Plans
(DOLLARS IN MILLIONS) | 2023 |  | 2022 |  | 2023 |  | 2022
Other assets | $ | 30 |  |  | $ | 51 |  |  | $ | 109 |  |  | $ | 129 |
Other current liabilities | (5) |  |  | (6) |  |  | (4) |  |  | (1) |
Retirement liabilities | (44) |  |  | (47) |  |  | (161) |  |  | (138) |
Net amount recognized | $ | (19) |  |  | $ | (2) |  |  | $ | (56) |  |  | $ | (10) |
Amounts Recognized in Accumulated Other Comprehensive Income | The amounts recognized in AOCI are detailed in the following table:
| U.S. Plans |  | Non-U.S. Plans |  | Postretirement Benefits
(DOLLARS IN MILLIONS) | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022
Net actuarial (gain) loss | $ | 155 |  |  | $ | 129 |  |  | $ | 198 |  |  | $ | 110 |  |  | $ | — |  |  | $ | (3) |
Prior service cost (credit) | — |  |  | — |  |  | (2) |  |  | (3) |  |  | (4) |  |  | (9) |
Total AOCI (before tax effects) | $ | 155 |  |  | $ | 129 |  |  | $ | 196 |  |  | $ | 107 |  |  | $ | (4) |  |  | $ | (12) |
Accumulated Benefit Obligation |
| U.S. Plans |  | Non-U.S. Plans
(DOLLARS IN MILLIONS) | 2023 |  | 2022 |  | 2023 |  | 2022
Accumulated Benefit Obligation — end of year | $ | 520 |  |  | $ | 495 |  |  | $ | 988 |  |  | $ | 870 |
Information for Pension Plans with an Accumulated Benefit Obligation (“ABO”) in excess of Plan Assets: |  |  |  |  |  |  |
Accumulated benefit obligation | $ | 47 |  |  | $ | 49 |  |  | $ | 165 |  |  | $ | 150 |
Fair value of plan assets | — |  |  | — |  |  | 36 |  |  | 41 |
Information for Pension Plans with a Projected Benefit Obligation (“PBO”) in excess of Plan Assets: |  |  |  |  |  |  |
Projected benefit obligation | $ | 47 |  |  | $ | 49 |  |  | $ | 185 |  |  | $ | 169 |
Fair value of plan assets | — |  |  | — |  |  | 41 |  |  | 45 |
Weighted-average assumptions used to determine obligations at December 31 |  |  |  |  |  |  |
Discount rate | 4.47 | % |  | 5.42 | % |  | 3.59 | % |  | 4.02 | %
Rate of compensation increase | 3.75 | % |  | 3.75 | % |  | 2.83 | % |  | 3.00 | %
Estimated Future Benefit Payments |
(DOLLARS IN MILLIONS) | U.S. Plans |  | Non-U.S. Plans |  | Postretirement Benefits
Estimated Future Benefit Payments |  |  |  |  |
2024 | $ | 99 |  |  | $ | 39 |  |  | $ | 4 |
2025 | 38 |  |  | 36 |  |  | 4 |
2026 | 38 |  |  | 41 |  |  | 4 |
2027 | 37 |  |  | 40 |  |  | 4 |
2028 | 36 |  |  | 45 |  |  | 4 |
2029 - 2033 | 166 |  |  | 239 |  |  | 18 |
Contributions |  |  |  |  |
Required Company Contributions in the Following Year (2024) | $ | 5 |  |  | $ | 20 |  |  | $ | — |
Percentage of Assets Invested | The percentage of assets in the Company’s pension plans, by type, is as follows:
| U.S. Plans |  | Non-U.S. Plans
| 2023 |  | 2022 |  | 2023 |  | 2022
Cash and cash equivalents | 1 | % |  | 2 | % |  | 3 | % |  | 3 | %
Equities | 13 | % |  | 47 | % |  | 16 | % |  | 18 | %
Fixed income | 86 | % |  | 51 | % |  | 42 | % |  | 37 | %
Property | — | % |  | — | % |  | 8 | % |  | 9 | %
Alternative and other investments | — | % |  | — | % |  | 31 | % |  | 33 | %
Fair Value Hierarchy of Plan Assets | The following tables present the Company’s plan assets for the U.S. and non-U.S. plans using the fair value hierarchy as of December 31, 2023 and 2022. The plans’ assets were accounted for at fair value and are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the valuation of fair value assets and their placement within the fair value hierarchy levels. For more information on a description of the fair value hierarchy, see Note 16.
| U.S. Plans for the Year Ended
| December 31, 2023
(DOLLARS IN MILLIONS) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash Equivalents | $ | — |  |  | $ | 6 |  |  | $ | — |  |  | $ | 6 |
Fixed Income Securities |  |  |  |  |  |  |
Government & Government Agency Bonds | — |  |  | 5 |  |  | — |  |  | 5 |
Corporate Bonds | — |  |  | 82 |  |  | — |  |  | 82 |
Municipal Bonds | — |  |  | 5 |  |  | — |  |  | 5 |
Assets measured at net asset value(1) |  |  |  |  |  |  | 406 |
Total | $ | — |  |  | $ | 98 |  |  | $ | — |  |  | $ | 504 |
Receivables |  |  |  |  |  |  | $ | 1 |
Total |  |  |  |  |  |  | $ | 505 |
| U.S. Plans for the Year Ended
| December 31, 2022
(DOLLARS IN MILLIONS) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash Equivalents | $ | — |  |  | $ | 9 |  |  | $ | — |  |  | $ | 9 |
Fixed Income Securities |  |  |  |  |  |  |
Government & Government Agency Bonds | — |  |  | 6 |  |  | — |  |  | 6 |
Corporate Bonds | — |  |  | 73 |  |  | — |  |  | 73 |
Municipal Bonds | — |  |  | 5 |  |  | — |  |  | 5 |
Assets measured at net asset value(1) |  |  |  |  |  |  | 404 |
Total | $ | — |  |  | $ | 93 |  |  | $ | — |  |  | $ | 497 |
Receivables |  |  |  |  |  |  | $ | 1 |
Total |  |  |  |  |  |  | $ | 498 |
_______________________ (1)Investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in the table above are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets. The total amount measured at net asset value includes approximately $65 million and $234 million in pooled equity funds and $341 million and $170 million in fixed income mutual funds for the years ended December 31, 2023 and 2022, respectively.
| Non-U.S. Plans for the Year Ended
| December 31, 2023
(DOLLARS IN MILLIONS) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash | $ | 27 |  |  | $ | — |  |  | $ | — |  |  | $ | 27 |
Equity Securities |  |  |  |  |  |  |
U.S. Large Cap | 90 |  |  | — |  |  | — |  |  | 90 |
U.S. Mid Cap | 8 |  |  | — |  |  | — |  |  | 8 |
U.S. Small Cap | 1 |  |  | — |  |  | — |  |  | 1 |
Non-U.S. Large Cap | 50 |  |  | — |  |  | — |  |  | 50 |
Non-U.S. Mid Cap | 5 |  |  | — |  |  | — |  |  | 5 |
Non-U.S. Small Cap | 1 |  |  | — |  |  | — |  |  | 1 |
Emerging Markets | 8 |  |  | — |  |  | — |  |  | 8 |
Fixed Income Securities |  |  |  |  |  |  |
U.S. Corporate Bonds | 29 |  |  | — |  |  | — |  |  | 29 |
Non-U.S. Treasuries/Government Bonds | 194 |  |  | — |  |  | — |  |  | 194 |
Non-U.S. Corporate Bonds | 50 |  |  | 88 |  |  | — |  |  | 138 |
Non-U.S. Asset-Backed Securities | — |  |  | 56 |  |  | — |  |  | 56 |
Non-U.S. Other Fixed Income | 2 |  |  | — |  |  | — |  |  | 2 |
Alternative Types of Investments |  |  |  |  |  |  |
Insurance Contracts | — |  |  | 247 |  |  | — |  |  | 247 |
Derivative Financial Instruments | — |  |  | 28 |  |  | — |  |  | 28 |
Absolute Return Funds | 3 |  |  | 2 |  |  | — |  |  | 5 |
Private Equity Funds | — |  |  | 27 |  |  | — |  |  | 27 |
Property |  |  |  |  |  |  |
Non-U.S. Property | 7 |  |  | — |  |  | 77 |  |  | 84 |
Total | $ | 475 |  |  | $ | 448 |  |  | $ | 77 |  |  | $ | 1,000 |
| Non-U.S. Plans for the Year Ended
| December 31, 2022
(DOLLARS IN MILLIONS) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash | $ | 14 |  |  | $ | 9 |  |  | $ | — |  |  | $ | 23 |
Equity Securities |  |  |  |  |  |  |
U.S. Large Cap | 73 |  |  | — |  |  | — |  |  | 73 |
U.S. Mid Cap | 6 |  |  | — |  |  | — |  |  | 6 |
Non-U.S. Large Cap | 79 |  |  | — |  |  | — |  |  | 79 |
Non-U.S. Mid Cap | 4 |  |  | — |  |  | — |  |  | 4 |
Non-U.S. Small Cap | 1 |  |  | — |  |  | — |  |  | 1 |
Emerging Markets | 7 |  |  | — |  |  | — |  |  | 7 |
Fixed Income Securities |  |  |  |  |  |  |
U.S. Corporate Bonds | 35 |  |  | — |  |  | — |  |  | 35 |
Non-U.S. Treasuries/Government Bonds | 144 |  |  | — |  |  | — |  |  | 144 |
Non-U.S. Corporate Bonds | 34 |  |  | 75 |  |  | — |  |  | 109 |
Non-U.S. Asset-Backed Securities | — |  |  | 46 |  |  | — |  |  | 46 |
Non-U.S. Other Fixed Income | 2 |  |  | — |  |  | — |  |  | 2 |
Alternative Types of Investments |  |  |  |  |  |  |
Insurance Contracts | — |  |  | 177 |  |  | — |  |  | 177 |
Derivative Financial Instruments | — |  |  | 56 |  |  | — |  |  | 56 |
Absolute Return Funds | 4 |  |  | 2 |  |  | — |  |  | 6 |
Other | — |  |  | 64 |  |  | 3 |  |  | 67 |
Property |  |  |  |  |  |  |
Non-U.S. Property | 4 |  |  | — |  |  | 81 |  |  | 85 |
Total | $ | 407 |  |  | $ | 429 |  |  | $ | 84 |  |  | $ | 920 |
Reconciliation of Level 3 Non-U.S. Plan Assets Held | The following table presents a reconciliation of Level 3 non-U.S. plan assets held during the year ended December 31, 2023:
| Non-U.S. Plans
(DOLLARS IN MILLIONS) | Property |  |  |  | Hedge Funds |  | Total
Ending balance as of December 31, 2022 | $ | 81 |  |  |  |  | $ | 3 |  |  | $ | 84 |
Actual return on plan assets | (4) |  |  |  |  | — |  |  | (4) |
Purchases, sales and settlements | — |  |  |  |  | (3) |  |  | (3) |
Ending balance as of December 31, 2023 | $ | 77 |  |  |  |  | $ | — |  |  | $ | 77 |
Weighted Average Assumptions Used to Determine Postretirement Benefit Expense and Obligation | The following weighted average assumptions were used to determine the postretirement benefit expense and obligation for the years ended December 31:
| Expense |  | Liability
| 2023 |  | 2022 |  |  |  | 2023 |  | 2022
Discount rate | 5.40 | % |  | 2.90 | % |  |  |  | 5.10 | % |  | 5.40 | %
Current medical cost trend rate | 6.50 | % |  | 6.75 | % |  |  |  | 7.25 | % |  | 6.50 | %
Ultimate medical cost trend rate | 4.75 | % |  | 4.75 | % |  |  |  | 4.75 | % |  | 4.75 | %
Medical cost trend rate decreases to ultimate rate in year | 2030 |  | 2030 |  |  |  | 2034 |  | 2030

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- Definition Tabular disclosure of the effect of fair value measurements using significant unobservable inputs (Level 3) on changes in plan assets of pension plans and/or other employee benefit plans for the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (f) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Tabular disclosure of the assumed health care cost trend rates for the next year used to measure the expected cost of benefits covered by the plans, including the ultimate trend rate(s) and when that rate is expected to be achieved. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (l) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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