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Accumulated Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Accumulated Other Comprehensive Income Loss [Abstract] |
Accumulated Other Comprehensive Income (Loss) | 31. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
| Defined Benefit Pension Plan |  |  | Private Equity Instruments |  |  | Foreign Currency Translation Adjustment |  |  | Total |
As at December 31, 2018 |  | (7 | ) |  |  | 15 |  |  |  | 1,030 |  |  |  | 1,038 |
Other Comprehensive Income (Loss), Before Tax |  | 6 |  |  |  | 14 |  |  |  | (228 | ) |  |  | (208 | )
Income Tax |  | (1 | ) |  |  | (2 | ) |  |  | - |  |  |  | (3 | )
As at December 31, 2019 |  | (2 | ) |  |  | 27 |  |  |  | 802 |  |  |  | 827 |
Other Comprehensive Income (Loss), Before Tax |  | (10 | ) |  |  | - |  |  |  | (44 | ) |  |  | (54 | )
Income Tax |  | 2 |  |  |  | - |  |  |  | - |  |  |  | 2 |
As at December 31, 2020 |  | (10 | ) |  |  | 27 |  |  |  | 758 |  |  |  | 775 |

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- Definition Disclosure of accumulated other comprehensive income loss. + References No definition available. + Details
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- Definition The entire disclosure of the analysis of other comprehensive income by item. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 106A -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_106A&doctype=Standard -URIDate 2020-01-01 + Details
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