Deferred Credits and Other Noncurrent Liabilities - Summary of Changes to Provision for Asset Retirement Obligations (Detail) - PHP (₱) ₱ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Provision for asset retirement obligations at beginning of the year | ₱ 1,752 | ₱ 1,164 |
| Capitalized to ROU assets during the year | 103 | 73 |
| Accretion expenses | 94 | 54 |
| Settlement of obligations and others | (4) | (3) |
| Reclassification to liabilities associated with assets classified as held-for-sale | (9) | |
| Change in assumptions | (48) | (51) |
| Revaluation due to change in IBR | (52) | 515 |
| Provision for asset retirement obligations at end of the year | ₱ 1,836 | ₱ 1,752 |