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Income Taxes - Additional Information (Detail) - PHP (₱) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Other Income Expense [Line Items] |  |  |
Excess MCIT deducted against RCIT | ₱ 103,000,000 | ₱ 5,000,000 | ₱ 2,000,000
Unrecognized deferred income tax assets | 817,000,000 | 748,000,000 |
Total excess MCIT | 2,000,000 |  |
Expired portion of excess MCIT | 14,000,000 | 3,000,000 | 0
Total NOLCO claimed as deduction against future taxable income | 2,338,000,000 |  |
Deduction against taxable income | 129,000,000 | 42,000,000 | 556,000,000
Expired portion of excess NOLCO | 47,000,000 | 225,000 | 990,000,000
Expiration amount of NOLCO incurred after five years |  |  | ₱ 76,000,000
Deferred tax asset on lease liability | 11,909,000,000 | 11,294,000,000 |
Deferred tax liability on right of use asset | 8,461,000,000 | 7,561,000,000 |
December Thirty One Two Thousand And Twenty Two Net [Member] |  |  |
Disclosure Of Other Income Expense [Line Items] |  |  |
Total excess MCIT | 2,000,000 |  |
Total NOLCO claimed as deduction against future taxable income | 2,338,000,000 |  |
DMPI and ePLDT [Member] |  |  |
Disclosure Of Other Income Expense [Line Items] |  |  |
Unrecognized deferred income tax assets | ₱ 208,000,000 | ₱ 135,000,000 |
Clark Tel [Member] |  |  |
Disclosure Of Other Income Expense [Line Items] |  |  |
Special income tax rate as percentage of gross sales | 5.00% |  |

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