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Financial Assets and Liabilities - Additional Information (Detail) |  |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 27, 2025 PHP (₱) | Feb. 27, 2025 USD ($) | Aug. 02, 2016 | Aug. 05, 2014 | Dec. 31, 2024 PHP (₱) USD ($) | Dec. 31, 2023 PHP (₱) USD ($) | Dec. 31, 2022 PHP (₱) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Mar. 31, 2023 PHP (₱) | Dec. 31, 2021 PHP (₱)
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Financial instruments subject to enforceable master netting arrangement |  |  |  |  | ₱ 0 | ₱ 0 |  |  |  |  |
Transfers into of Level 3 of fair value hierarchy, investment properties |  |  |  |  | 0 | 0 |  |  |  |  |
Transfers out of Level 3 of fair value hierarchy, investment properties |  |  |  |  | 0 | 0 |  |  |  |  |
Financial liabilities fair value transfer into Level 3 |  |  |  |  | 0 | 0 |  |  |  |  |
Financial liabilities fair value transfer out of Level 3 |  |  |  |  | 0 | 0 |  |  |  |  |
Cash and cash equivalents |  |  |  |  | 10,011,000,000 | 16,177,000,000 | ₱ 25,211,000,000 |  |  |  | ₱ 23,907,000,000
Short-term investments |  |  |  |  | 136,000,000 | 391,000,000 |  |  |  |  |
Remaining commitment |  |  |  |  | 4,200,000,000 |  |  |  |  | ₱ 33,000,000,000 |
Commercial commitments during period |  |  |  |  |  | 11,700,000,000 |  |  |  |  |
Commitments related to non-major capital expenditure vendors |  |  |  |  | 11,200,000,000 |  |  |  |  |  |
Pledges as collateral |  |  |  |  | ₱ 0 | 0 |  |  |  |  |
Exchange rate |  |  |  |  | 1 |  |  |  |  |  |
Net foreign exchange gains |  |  |  |  |  | 1,149,000,000 |  |  |  |  |
Net foreign exchange loss |  |  |  |  | ₱ 36,000,000 |  | 4,687,000,000 |  |  |  |
Percentage of increase or decrease in value of currency |  |  |  |  | 2.86% |  |  |  |  |  |
Net foreign exchange gain /loss on equity instrument |  |  |  |  |  | 193,000,000 |  |  |  |  |
Increase in consolidated variable rate debt |  |  |  |  | ₱ 166,675,000,000 | 135,630,000,000 |  |  |  |  |
Foreign exchange gains (losses) - net |  |  |  |  | (36,000,000) | ₱ 1,153,000,000 | ₱ (4,685,000,000) |  |  |  |
Decrease in dividend payout |  |  | 60.00% |  |  |  |  |  |  |  |
Philippine Peso [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Increase decrease in profit after tax |  |  |  |  | ₱ 2,402,000,000 |  |  |  |  |  |
Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividend Pay Out Rate |  |  |  | 70.00% |  |  |  |  |  |  |
Top of range [member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividend Pay Out Rate |  |  |  | 75.00% |  |  |  |  |  |  |
Floating Interest Rate [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of consolidated debts with variable rates |  |  |  |  | 59.00% | 53.00% |  | 59.00% | 53.00% |  |
Foreign currency exchange risk [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Exchange rate |  |  |  |  | 1 | 1 |  |  |  |  |
Increase in consolidated foreign currency-denominated financial liabilities |  |  |  |  | ₱ 61,000,000 |  |  |  |  |  |
Percentage of consolidated debts |  |  |  |  | 14.00% | 15.00% |  |  |  |  |
Decrease in consolidated foreign currency-denominated debt |  |  |  |  | ₱ 39,015,000,000 | ₱ 39,479,000,000 |  |  |  |  |
Percentage of consolidated debts unhedged |  |  |  |  | 6.00% | 5.00% |  | 6.00% | 5.00% |  |
Percentage of consolidated debts unhedged net of cash allocated for debt |  |  |  |  | 5.00% | 5.00% |  | 5.00% | 5.00% |  |
Percentage of consolidated revenues denominated in U.S. dollars |  |  |  |  | 15.00% | 13.00% | 12.00% | 15.00% | 13.00% |  |
Percentage of consolidated expenses denominated in U.S. dollars |  |  |  |  | 14.00% | 12.00% | 8.00% | 14.00% | 12.00% |  |
Decrease in value of currency |  |  |  |  | 4.38% |  |  | 4.38% |  |  |
Borrowings, interest rate basis |  |  |  |  | 30 |  |  |  |  |  |
Percentage of exchange rate weaken/strengthen |  |  |  |  | 50.00% |  |  |  |  |  |
Foreign currency exchange risk [Member] | Exchange Rate [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Exchange rate | 57.88 | 1 |  |  |  |  |  |  |  |  |
Foreign currency exchange risk [Member] | U.S. Dollars [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate basis |  |  |  |  | 30 |  |  |  |  |  |
Increase decrease in profit after tax due to interest rate effect |  |  |  |  | ₱ 5,000,000 |  |  |  |  |  |
Change in stockholders' equity due to interest rate effect |  |  |  |  | ₱ 30,000,000 |  |  |  |  |  |
Foreign currency exchange risk [Member] | Philippine Peso [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate basis |  |  |  |  | 50 |  |  |  |  |  |
Increase decrease in profit after tax due to interest rate effect |  |  |  |  | ₱ 47,000,000 |  |  |  |  |  |
Change in stockholders' equity due to interest rate effect |  |  |  |  | 25,000,000 |  |  |  |  |  |
Derivatives [Member] | Foreign currency exchange risk [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Aggregate notional amount | $ |  |  |  |  |  |  |  | $ 381,000,000 | $ 485,000,000 |  |
Less than 1 year [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Outstanding commercial commitments in the form of letters of credit |  |  |  |  | 0 | ₱ 0 |  |  |  |  |
Other obligations [Member] |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Financial Liabilities [Line Items] |  |  |  |  |  |  |  |  |  |  |
Various Trade And Other Obligations |  |  |  |  | ₱ 133,811,000,000 | ₱ 151,062,000,000 |  |  |  |  |

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- Details
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