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Pensions and Post-Employment Benefits (Tables) | 12 Months Ended
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Dec. 31, 2020
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Schedule Actuarial Results Related to Pension and Other Post Retirement Benefits | For the years ended December 31, 2020, 2019 and 2018, the effects of pension plans and other post-employment benefits are summarized as follows:
|  |  |  |  | Pensions |  |  | Other benefits |  |  | Total |
Net period cost (income): |  |  |  |  | 2020 |  |  | 2019 |  |  | 2018 |  |  | 2020 |  |  | 2019 |  |  | 2018 |  |  | 2020 |  |  | 2019 |  |  | 2018 |
Recorded in operating costs and expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ |  |  |  |  | 10 |  |  |  | 10 |  |  |  | 10 |  |  |  | 2 |  |  |  | 2 |  |  |  | 3 |  |  |  | 12 |  |  |  | 12 |  |  |  | 13 |
Past service cost |  |  |  |  |  |  | (2 | ) |  |  | 1 |  |  |  | 9 |  |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | (1 | ) |  |  | 1 |  |  |  | 9 |
Settlements and curtailments |  |  |  |  |  |  | — |  |  |  | (3 | ) |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | (1 | ) |  |  | (3 | ) |  |  | — |
|  |  |  |  |  |  | 8 |  |  |  | 8 |  |  |  | 19 |  |  |  | 2 |  |  |  | 2 |  |  |  | 3 |  |  |  | 10 |  |  |  | 10 |  |  |  | 22 |
Recorded in other financial expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net interest cost |  |  |  |  |  |  | 28 |  |  |  | 34 |  |  |  | 35 |  |  |  | 5 |  |  |  | 5 |  |  |  | 5 |  |  |  | 33 |  |  |  | 39 |  |  |  | 40 |
Recorded in other comprehensive income |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actuarial (gains) losses for the period |  |  |  |  |  |  | 181 |  |  |  | 203 |  |  |  | (176 | ) |  |  | 18 |  |  |  | 7 |  |  |  | — |  |  |  | 199 |  |  |  | 210 |  |  |  | (176 | )
|  | $ |  |  |  |  | 217 |  |  |  | 245 |  |  |  | (122 | ) |  |  | 25 |  |  |  | 14 |  |  |  | 8 |  |  |  | 242 |  |  |  | 259 |  |  |  | (114 | )
Summary of Actuarial (Gains) Losses | For the years 2020, 2019 and 2018, actuarial (gains) losses for the period were generated by the following main factors as follows:
|  |  |  |  | 2020 |  |  | 2019 |  |  | 2018 |
Actuarial (gains) losses due to experience |  | $ |  |  |  |  | 1 |  |  |  | 5 |  |  |  | (58 | )
Actuarial (gains) losses due to demographic assumptions |  |  |  |  |  |  | 18 |  |  |  | (11 | ) |  |  | (57 | )
Actuarial (gains) losses due financial assumptions |  |  |  |  |  |  | 180 |  |  |  | 216 |  |  |  | (61 | )
|  | $ |  |  |  |  | 199 |  |  |  | 210 |  |  |  | (176 | )
Disclosure of Net Defined Benefit Liability (Asset) | As of December 31, 2020 and 2019, the reconciliation of the actuarial benefits’ obligations and pension plan assets, are presented as follows:
|  |  |  |  | Pensions |  |  | Other benefits |  |  | Total |
|  |  |  |  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Change in benefits obligation: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Projected benefit obligation at beginning of the period |  | $ |  |  |  |  | 2,651 |  |  |  | 2,375 |  |  |  | 87 |  |  |  | 79 |  |  |  | 2,738 |  |  |  | 2,454 |
Service cost |  |  |  |  |  |  | 10 |  |  |  | 10 |  |  |  | 2 |  |  |  | 2 |  |  |  | 12 |  |  |  | 12 |
Interest cost |  |  |  |  |  |  | 70 |  |  |  | 78 |  |  |  | 5 |  |  |  | 5 |  |  |  | 75 |  |  |  | 83 |
Actuarial losses |  |  |  |  |  |  | 258 |  |  |  | 268 |  |  |  | 18 |  |  |  | 7 |  |  |  | 276 |  |  |  | 275 |
Additions through business combinations |  |  |  |  |  |  | 1 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1 |  |  |  | — |
Settlements and curtailments |  |  |  |  |  |  | — |  |  |  | (3 | ) |  |  | (1 | ) |  |  | — |  |  |  | (1 | ) |  |  | (3 | )
Reduction from disposal of assets |  |  |  |  |  |  | — |  |  |  | (2 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (2 | )
Plan amendments |  |  |  |  |  |  | (2 | ) |  |  | 1 |  |  |  | 1 |  |  |  | — |  |  |  | (1 | ) |  |  | 1 |
Benefits paid |  |  |  |  |  |  | (140 | ) |  |  | (141 | ) |  |  | (6 | ) |  |  | (7 | ) |  |  | (146 | ) |  |  | (148 | )
Foreign currency translation |  |  |  |  |  |  | 80 |  |  |  | 65 |  |  |  | (1 | ) |  |  | 1 |  |  |  | 79 |  |  |  | 66 |
Projected benefit obligation at end of the period |  |  |  |  |  |  | 2,928 |  |  |  | 2,651 |  |  |  | 105 |  |  |  | 87 |  |  |  | 3,033 |  |  |  | 2,738 |
Change in plan assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of the period |  |  |  |  |  |  | 1,599 |  |  |  | 1,486 |  |  |  | 1 |  |  |  | 1 |  |  |  | 1,600 |  |  |  | 1,487 |
Return on plan assets |  |  |  |  |  |  | 42 |  |  |  | 44 |  |  |  | — |  |  |  | — |  |  |  | 42 |  |  |  | 44 |
Actuarial gains |  |  |  |  |  |  | 77 |  |  |  | 65 |  |  |  | — |  |  |  | — |  |  |  | 77 |  |  |  | 65 |
Employer contributions |  |  |  |  |  |  | 75 |  |  |  | 103 |  |  |  | 6 |  |  |  | 7 |  |  |  | 81 |  |  |  | 110 |
Reduction for disposal of assets |  |  |  |  |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1 | )
Benefits paid |  |  |  |  |  |  | (140 | ) |  |  | (141 | ) |  |  | (6 | ) |  |  | (7 | ) |  |  | (146 | ) |  |  | (148 | )
Foreign currency translation |  |  |  |  |  |  | 40 |  |  |  | 43 |  |  |  | — |  |  |  | — |  |  |  | 40 |  |  |  | 43 |
Fair value of plan assets at end of the period |  |  |  |  |  |  | 1,693 |  |  |  | 1,599 |  |  |  | 1 |  |  |  | 1 |  |  |  | 1,694 |  |  |  | 1,600 |
Net projected liability in the statement of financial position |  | $ |  |  |  |  | 1,235 |  |  |  | 1,052 |  |  |  | 104 |  |  |  | 86 |  |  |  | 1,339 |  |  |  | 1,138 |
Summary of Plan Assets Measured at Estimated Fair Value | As of December 31, 2020 and 2019, based on the hierarchy of fair values, plan assets are detailed as follows:
|  |  |  |  | 2020 |  |  |  |  |  | 2019 |
|  |  |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |  |  |  |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Cash |  | $ |  |  |  |  | 44 |  |  |  | — |  |  |  | — |  |  |  | 44 |  |  | $ |  |  |  |  | 45 |  |  |  | 16 |  |  |  | — |  |  |  | 61 |
Investments in corporate bonds |  |  |  |  |  |  | 1 |  |  |  | 474 |  |  |  | — |  |  |  | 475 |  |  |  |  |  |  |  | 4 |  |  |  | 396 |  |  |  | — |  |  |  | 400 |
Investments in government bonds |  |  |  |  |  |  | 86 |  |  |  | 371 |  |  |  | — |  |  |  | 457 |  |  |  |  |  |  |  | 90 |  |  |  | 450 |  |  |  | — |  |  |  | 540 |
Total fixed-income securities |  |  |  |  |  |  | 131 |  |  |  | 845 |  |  |  | — |  |  |  | 976 |  |  |  |  |  |  |  | 139 |  |  |  | 862 |  |  |  | — |  |  |  | 1,001 |
Investment in marketable securities |  |  |  |  |  |  | 341 |  |  |  | 89 |  |  |  | — |  |  |  | 430 |  |  |  |  |  |  |  | 223 |  |  |  | 157 |  |  |  | — |  |  |  | 380 |
Other investments and private funds |  |  |  |  |  |  | 146 |  |  |  | 55 |  |  |  | 87 |  |  |  | 288 |  |  |  |  |  |  |  | 46 |  |  |  | 85 |  |  |  | 88 |  |  |  | 219 |
Total variable-income securities |  |  |  |  |  |  | 487 |  |  |  | 144 |  |  |  | 87 |  |  |  | 718 |  |  |  |  |  |  |  | 269 |  |  |  | 242 |  |  |  | 88 |  |  |  | 599 |
Total plan assets |  | $ |  |  |  |  | 618 |  |  |  | 989 |  |  |  | 87 |  |  |  | 1,694 |  |  | $ |  |  |  |  | 408 |  |  |  | 1,104 |  |  |  | 88 |  |  |  | 1,600 |
Summary of Significant Assumptions Used in the Determination of the Benefit Obligation | The most significant assumptions used in the determination of the benefit obligation were as follows:
|  | 2020 |  |  | 2019 |
|  |  |  |  | United |  |  | United |  |  | Range of rates in |  |  |  |  |  | United |  |  | United |  |  | Rates ranges in |
|  | Mexico |  |  | States |  |  | Kingdom |  |  | other countries |  |  | Mexico |  |  | States |  |  | Kingdom |  |  | other countries |
Discount rates |  |  | 7.8% |  |  |  | 2.6% |  |  |  | 1.5% |  |  |  | 0.2% – 9.0% |  |  |  | 8.75% |  |  |  | 3.6% |  |  |  | 2.1% |  |  |  | 0.4% – 8.8% |
Rate of return on plan assets |  |  | 7.8% |  |  |  | 2.6% |  |  |  | 1.5% |  |  |  | 0.2% – 9.0% |  |  |  | 8.75% |  |  |  | 3.6% |  |  |  | 2.1% |  |  |  | 0.4% – 8.8% |
Rate of salary increases |  |  | 4.5% |  |  |  | — |  |  |  | 3.0% |  |  |  | 2.3% – 6.8% |  |  |  | 4.0% |  |  |  | — |  |  |  | 3.0% |  |  |  | 2.3% – 6.8% |
Schedule of Estimated Payments for Pensions and Other Post-Employment Benefits | As of December 31, 2020, estimated payments for pensions and other post-employment benefits over the next 10 years were as follows:
|  |  |  |  | Estimated payments |
2021 |  | $ |  |  |  |  | 157 |
2022 |  |  |  |  |  |  | 144 |
2023 |  |  |  |  |  |  | 144 |
2024 |  |  |  |  |  |  | 144 |
2025 – 2030 |  |  |  |  |  |  | 868 |
Aggregate Projected Benefit Obligation for Pension Plans and Other Post-Employment Benefits and the Plan Assets by Country | As of December 31, 2020 and 2019, the aggregate projected benefit obligation (“PBO”) for pension plans and other post-employment benefits and the plan assets by country were as follows:
|  |  |  |  | 2020 |  |  |  |  |  | 2019 |
|  |  |  |  | PBO |  |  | Assets |  |  | Deficit |  |  |  |  |  | PBO |  |  | Assets |  |  | Deficit |
Mexico |  | $ |  |  |  |  | 216 |  |  |  | 29 |  |  |  | 187 |  |  | $ |  |  |  |  | 203 |  |  |  | 24 |  |  |  | 179 |
United States |  |  |  |  |  |  | 305 |  |  |  | 222 |  |  |  | 83 |  |  |  |  |  |  |  | 297 |  |  |  | 219 |  |  |  | 78 |
United Kingdom 1 |  |  |  |  |  |  | 1,925 |  |  |  | 1,214 |  |  |  | 711 |  |  |  |  |  |  |  | 1,681 |  |  |  | 1,128 |  |  |  | 553 |
Germany |  |  |  |  |  |  | 219 |  |  |  | 8 |  |  |  | 211 |  |  |  |  |  |  |  | 204 |  |  |  | 9 |  |  |  | 195 |
Other countries |  |  |  |  |  |  | 368 |  |  |  | 221 |  |  |  | 147 |  |  |  |  |  |  |  | 353 |  |  |  | 220 |  |  |  | 133 |
|  | $ |  |  |  |  | 3,033 |  |  |  | 1,694 |  |  |  | 1,339 |  |  | $ |  |  |  |  | 2,738 |  |  |  | 1,600 |  |  |  | 1,138 |

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