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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2023
Disclosure Of Accumulated Other Comprehensive Income Loss [Abstract] |
Summary of Accumulated Other Comprehensive Income (Loss) |
| Pension and Other Post-Retirement Benefits |  | Private Equity Instruments |  | Foreign Currency Translation Adjustment |  | Total
As at December 31, 2021 | 28 |  | 27 |  | 629 |  | 684
Other Comprehensive Income (Loss), Before Tax | 96 |  | 2 |  | 713 |  | 811
Income Tax (Expense) Recovery | (25) |  | — |  | — |  | (25)
As at December 31, 2022 | 99 |  | 29 |  | 1,342 |  | 1,470
Other Comprehensive Income (Loss), Before Tax | (58) |  | 63 |  | (286) |  | (281)
Reclassification on Divestiture (Note 5) | — |  | — |  | 12 |  | 12
Income Tax (Expense) Recovery | 14 |  | (7) |  | — |  | 7
As at December 31, 2023 | 55 |  | 85 |  | 1,068 |  | 1,208

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- Definition Disclosure of accumulated other comprehensive income loss. + References No definition available. + Details
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