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Long term retention program ("LTRP") | 9 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Long term retention program ("LTRP") | Long term retention program (“LTRP”) The following table summarizes the long term retention program accrued compensation expense for the nine and three-month periods ended September 30, 2023 and 2022, which are payable in cash according to the decisions made by the Board of Directors (the “Board”):
| Nine Months Ended September 30, |  | Three Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
| (In millions) |  | (In millions)
LTRP 2017 | $ | — |  |  | $ | (3) |  |  | $ | — |  |  | $ | 1 |
LTRP 2018 | 3 |  |  | (2) |  |  | 1 |  |  | 1 |
LTRP 2019 | 13 |  |  | 12 |  |  | 4 |  |  | 5 |
LTRP 2020 | 15 |  |  | 14 |  |  | 5 |  |  | 5 |
LTRP 2021 | 17 |  |  | 16 |  |  | 5 |  |  | 5 |
LTRP 2022 | 31 |  |  | 22 |  |  | 9 |  |  | 7 |
LTRP 2023 | 43 |  |  | — |  |  | 15 |  |  | — |
Total LTRP | $ | 122 |  |  | $ | 59 |  |  | $ | 39 |  |  | $ | 24 |

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