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Provisions - Summary of Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government (Detail) - 3rd planned period [Member] | Dec. 31, 2021 kT
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Disclosure of Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government [Line Items] |
Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government in Tons Co2 Equivalents | 57,711
Period 2021 [Member] |
Disclosure of Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government [Line Items] |
Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government in Tons Co2 Equivalents | 15,625
Period 2022 [Member] |
Disclosure of Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government [Line Items] |
Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government in Tons Co2 Equivalents | 15,782
Period 2023 [Member] |
Disclosure of Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government [Line Items] |
Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government in Tons Co2 Equivalents | 15,782
Period 2024 [Member] |
Disclosure of Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government [Line Items] |
Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government in Tons Co2 Equivalents | 5,261
Period 2025 [Member] |
Disclosure of Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government [Line Items] |
Greenhouse Gas Emissions Rights Allowances Received Free of Charge from the Government in Tons Co2 Equivalents | 5,261

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