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Employee Benefit and Retirement Plans (Tables) | 12 Months Ended
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Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Reconciliation of Benefit Obligations | The following provides a reconciliation of benefit obligations, plan assets and funded status of the Company’s noncontributory defined benefit pension plans, including the SERP, at December 31, (dollars in millions):
| Pension Benefits |  | Postretirement Benefits
| United States |  | International |  |  |  |
Change in benefit obligation: | 2021 |  | 2020 |  | 2021 |  | 2020 |  | 2021 |  | 2020
Benefit obligation at beginning of year | $ | 1,357 |  |  | $ | 1,449 |  |  | $ | 668 |  |  | $ | 626 |  |  | $ | 51 |  |  | $ | 52 |
Service cost | — |  |  | — |  |  | 4 |  |  | 4 |  |  | — |  |  | — |
Interest cost | 20 |  |  | 35 |  |  | 6 |  |  | 9 |  |  | 1 |  |  | 1 |
Actuarial (gain) loss | (53) |  |  | 133 |  |  | (14) |  |  | 29 |  |  | (7) |  |  | 2 |
Amendments | — |  |  | — |  |  | 1 |  |  | 1 |  |  | — |  |  | — |
Currency translation | — |  |  | — |  |  | (16) |  |  | 29 |  |  | — |  |  | — |
Benefits paid | (86) |  |  | (95) |  |  | (25) |  |  | (21) |  |  | (4) |  |  | (4) |
Acquisitions and dispositions, net | — |  |  | 2 |  |  | — |  |  | — |  |  | — |  |  | — |
Curtailments, settlements and other | — |  |  | (167) |  |  | (1) |  |  | (9) |  |  | — |  |  | — |
Benefit obligation at end of year (1) | $ | 1,238 |  |  | $ | 1,357 |  |  | $ | 623 |  |  | $ | 668 |  |  | $ | 41 |  |  | $ | 51 |
Change in plan assets: |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year | 1,161 |  |  | 1,228 |  |  | 627 |  |  | 580 |  |  | — |  |  | — |
Actual return (loss) on plan assets | 48 |  |  | 178 |  |  | (7) |  |  | 47 |  |  | — |  |  | — |
Contributions | 10 |  |  | 17 |  |  | 10 |  |  | 8 |  |  | 4 |  |  | 4 |
Currency translation | — |  |  | — |  |  | (9) |  |  | 22 |  |  | — |  |  | — |
Benefits paid | (86) |  |  | (95) |  |  | (25) |  |  | (21) |  |  | (4) |  |  | (4) |
Settlements and other | — |  |  | (167) |  |  | (1) |  |  | (9) |  |  | — |  |  | — |
Fair value of plan assets at end of year | $ | 1,133 |  |  | $ | 1,161 |  |  | $ | 595 |  |  | $ | 627 |  |  | $ | — |  |  | $ | — |
Funded status at end of year | $ | (105) |  |  | $ | (196) |  |  | $ | (28) |  |  | $ | (41) |  |  | $ | (41) |  |  | $ | (51) |
Amounts recognized in the Consolidated Balance Sheets: |  |  |  |  |  |  |  |  |  |  |
Prepaid benefit cost, included in other assets | $ | 29 |  |  | $ | — |  |  | $ | 102 |  |  | $ | 104 |  |  | $ | — |  |  | $ | — |
Accrued current benefit cost—other accrued liabilities | (11) |  |  | (11) |  |  | (4) |  |  | (5) |  |  | (5) |  |  | (5) |
Accrued noncurrent benefit cost— other noncurrent liabilities | (123) |  |  | (185) |  |  | (126) |  |  | (140) |  |  | (36) |  |  | (46) |
Net amount recognized | $ | (105) |  |  | $ | (196) |  |  | $ | (28) |  |  | $ | (41) |  |  | $ | (41) |  |  | $ | (51) |
Assumptions: |  |  |  |  |  |  |  |  |  |  |
Weighted-average assumptions used to determine benefit obligation: |  |  |  |  |  |  |  |  |  |  |
Discount rate | 2.64 | % |  | 2.16 | % |  | 1.60 | % |  | 1.22 | % |  | 2.34 | % |  | 1.80 | %
Long-term rate of compensation increase | 3.00 | % |  | 3.00 | % |  | 2.25 | % |  | 2.18 | % |  | — | % |  | — | %
Current health care cost trend rates | — | % |  | — | % |  | — | % |  | — | % |  | 6.21 | % |  | 6.48 | %
Ultimate health care cost trend rates | — | % |  | — | % |  | — | % |  | — | % |  | 4.50 | % |  | 4.50 | %
(1)The accumulated benefit obligation for all defined benefit pension plans was $1.9 billion and $2.0 billion at December 31, 2021 and 2020, respectively.
Schedule Of Company's Pension Cost And Supplemental Retirement Plans | The components of pension and postretirement benefit expense for the periods indicated are as follows (dollars in millions):
| Pension Benefits
| United States |  | International
| 2021 |  | 2020 |  | 2019 |  | 2021 |  | 2020 |  | 2019
Service cost | $ | — |  |  | $ | — |  |  | $ | 1 |  |  | $ | 4 |  |  | $ | 4 |  |  | $ | 6 |
Interest cost | 20 |  |  | 35 |  |  | 49 |  |  | 6 |  |  | 9 |  |  | 13 |
Expected return on plan assets | (51) |  |  | (59) |  |  | (59) |  |  | (3) |  |  | (6) |  |  | (13) |
Amortization: |  |  |  |  |  |  |  |  |  |  |
Prior service cost | — |  |  | — |  |  | — |  |  | 1 |  |  | 1 |  |  | — |
Net actuarial loss | 22 |  |  | 23 |  |  | 15 |  |  | 3 |  |  | 3 |  |  | 2 |
Curtailment, settlement and termination costs | — |  |  | 52 |  |  | — |  |  | — |  |  | 1 |  |  | 1 |
Total expense | $ | (9) |  |  | $ | 51 |  |  | $ | 6 |  |  | $ | 11 |  |  | $ | 12 |  |  | $ | 9 |
Assumptions |  |  |  |  |  |  |  |  |  |  |
Weighted average assumption used to calculate net periodic cost: |  |  |  |  |  |  |  |  |  |
Effective discount rate for benefit obligations | 2.16 | % |  | 3.06 | % |  | 4.12 | % |  | 1.22 | % |  | 1.79 | % |  | 2.52 | %
Effective rate for interest on benefit obligations | 1.54 | % |  | 2.65 | % |  | 3.79 | % |  | 0.92 | % |  | 1.55 | % |  | 2.20 | %
Effective rate for service cost | 2.63 | % |  | 3.43 | % |  | 3.93 | % |  | 0.71 | % |  | 0.92 | % |  | 1.89 | %
Effective rate for interest on service cost | 2.61 | % |  | 3.41 | % |  | 3.62 | % |  | 0.54 | % |  | 0.75 | % |  | 2.24 | %
Long-term rate of return on plan assets | 5.25 | % |  | 5.50 | % |  | 5.25 | % |  | 0.51 | % |  | 1.08 | % |  | 2.47 | %
Long-term rate of compensation increase | 3.00 | % |  | 3.00 | % |  | 3.00 | % |  | 2.18 | % |  | 2.32 | % |  | 2.32 | %
| Postretirement Benefits
| 2021 |  | 2020 |  | 2019
Interest cost | $ | 1 |  |  | $ | 1 |  |  | $ | 2 |
Amortization: |  |  |  |  |
Prior service credit | — |  |  | (2) |  |  | (5) |
Net actuarial gain | (3) |  |  | (4) |  |  | (4) |
Total income | $ | (2) |  |  | $ | (5) |  |  | $ | (7) |
Assumptions |  |  |  |  |
Weighted average assumption used to calculate net periodic cost: |  |  |  |  |
Effective discount rate for benefit obligations | 1.80 | % |  | 2.80 | % |  | 3.90 | %
Effective rate for interest on benefit obligations | 1.18 | % |  | 2.41 | % |  | 2.71 | %
Effective rate for service cost | 1.32 | % |  | 2.52 | % |  | 2.97 | %
Effective rate for interest on service cost | 1.02 | % |  | 2.27 | % |  | 2.78 | %
Schedule of Expected Benefit Payments | Estimated future benefit payments under the Company’s defined benefit pension plans and postretirement benefit plans are as follows at December 31, 2021 (in millions):
| 2022 |  | 2023 |  | 2024 |  | 2025 |  | 2026 |  | Thereafter
Pension benefits | $ | 111 |  |  | $ | 109 |  |  | $ | 109 |  |  | $ | 107 |  |  | $ | 107 |  |  | $ | 515 |
Postretirement benefits | $ | 5 |  |  | $ | 5 |  |  | $ | 4 |  |  | $ | 4 |  |  | $ | 4 |  |  | $ | 13 |
Pension Benefits |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets | Summary of under-funded or non-funded pension benefit plans with projected benefit obligations in excess of plan assets at December 31, (in millions):
| Pension Benefits
| 2021 |  | 2020
Projected benefit obligation | $ | 469 |  |  | $ | 1,721 |
Fair value of plan assets | 205 |  |  | 1,380 |
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets | Summary of pension plans with accumulated obligations in excess of plan assets at December 31, (in millions):
| Pension Benefits
| 2021 |  | 2020
Accumulated benefit obligation | $ | 454 |  |  | $ | 1,711 |
Fair value of plan assets | 205 |  |  | 1,380 |
Schedule of Allocation of Plan Assets | The composition of domestic pension plan assets at December 31, 2021 and 2020 is as follows (in millions):
|  | Plan Assets — Domestic Plans
|  | December 31, 2021
|  | Fair Value Measurements |  |  |  |
Asset Category |  | Level 1 |  | Level 2 |  | Level 3 |  | Subtotal |  | NAV-based assets |  | Total
Equity securities and funds |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 220 |  |  | $ | 220 |
Fixed income securities and funds |  | 455 |  |  | — |  |  | — |  |  | 455 |  |  | 403 |  |  | 858 |
Alternative investments |  | — |  |  | — |  |  | — |  |  | — |  |  | 22 |  |  | 22 |
Cash and other |  | 19 |  |  | 13 |  |  | 1 |  |  | 33 |  |  | — |  |  | 33 |
Total |  | $ | 474 |  |  | $ | 13 |  |  | $ | 1 |  |  | $ | 488 |  |  | $ | 645 |  |  | $ | 1,133 |
|  | Plan Assets — Domestic Plans
|  | December 31, 2020
|  | Fair Value Measurements |  |  |  |
Asset Category |  | Level 1 |  | Level 2 |  | Level 3 |  | Subtotal |  | NAV-based assets |  | Total
Equity securities and funds |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 273 |  |  | $ | 273 |
Fixed income securities and funds |  | 441 |  |  | — |  |  | — |  |  | 441 |  |  | 319 |  |  | 760 |
Alternative investments |  | — |  |  | — |  |  | — |  |  | — |  |  | 104 |  |  | 104 |
Cash and other |  | 8 |  |  | 15 |  |  | 1 |  |  | 24 |  |  | — |  |  | 24 |
Total |  | $ | 449 |  |  | $ | 15 |  |  | $ | 1 |  |  | $ | 465 |  |  | $ | 696 |  |  | $ | 1,161 |
The composition of international pension plan assets at December 31, 2021 and 2020 is as follows (in millions):
|  | Plan Assets — International Plans
|  | December 31, 2021
|  | Fair Value Measurements |  |  |  |
Asset Category |  | Level 1 |  | Level 2 |  | Level 3 |  | Subtotal |  | NAV-based assets |  | Total
Equity securities and funds |  | $ | 4 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 7 |  |  | $ | — |  |  | $ | 7 |
Fixed income securities and funds |  | 314 |  |  | 4 |  |  | — |  |  | 318 |  |  | — |  |  | 318 |
Cash and other |  | 22 |  |  | 240 |  |  | 8 |  |  | 270 |  |  | — |  |  | 270 |
Total |  | $ | 340 |  |  | $ | 247 |  |  | $ | 8 |  |  | $ | 595 |  |  | $ | — |  |  | $ | 595 |
|  | Plan Assets — International Plans
|  | December 31, 2020
|  | Fair Value Measurements |  |  |  |
Asset Category |  | Level 1 |  | Level 2 |  | Level 3 |  | Subtotal |  | NAV-based assets |  | Total
Equity securities and funds |  | $ | 3 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 6 |  |  | $ | — |  |  | $ | 6 |
Fixed income securities and funds |  | 262 |  |  | 3 |  |  | — |  |  | 265 |  |  | — |  |  | 265 |
Cash and other |  | 4 |  |  | 234 |  |  | 9 |  |  | 247 |  |  | 109 |  |  | 356 |
Total |  | $ | 269 |  |  | $ | 240 |  |  | $ | 9 |  |  | $ | 518 |  |  | $ | 109 |  |  | $ | 627 |
Postretirement Benefits |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets | A reconciliation of the change in fair value of the defined benefit plans’ assets using significant unobservable inputs (Level 3) for 2021 and 2020 is as follows (in millions):
| Total
Balance December 31, 2019 | $ | 9 |
Unrealized gains | 1 |
Balance December 31, 2020 | 10 |
Unrealized losses | (1) |
Balance December 31, 2021 | $ | 9 |

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