Emissions Liabilities - Disclosure of Quantity of Emissions Rights Allocated Free of Charge (Detail)

Dec. 31, 2025

CO2

^[1]

Disclosure of quantity of emissions rights allocated free of charge [Line Items]

Emissions rights allocated free of charge

8,089,916

Quantities allocated in 2021 [member]

Disclosure of quantity of emissions rights allocated free of charge [Line Items]

Emissions rights allocated free of charge

1,385,433

Quantities Allocated in 2022 [Member]

Disclosure of quantity of emissions rights allocated free of charge [Line Items]

Emissions rights allocated free of charge

1,602,751

Quantities Allocated in 2023 [Member]

Disclosure of quantity of emissions rights allocated free of charge [Line Items]

Emissions rights allocated free of charge

1,736,918

Quantities Allocated in 2024 [Member]

Disclosure of quantity of emissions rights allocated free of charge [Line Items]

Emissions rights allocated free of charge

1,766,850

Quantities Allocated in 2025 [Member]

Disclosure of quantity of emissions rights allocated free of charge [Line Items]

Emissions rights allocated free of charge

1,597,964

[1]	Finalized changes in allocated quantities, including additional allocations, cancellations and other adjustments, have been reflected.