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Investments in Associates and Joint Ventures - Carrying Value of PCEV's Investments in VIH (Parenthetical) (Detail) - PHP (₱) ₱ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
VIH [Member] |  |
Disclosure of Investments in Associates and Joint Ventures [Line Items] |  |
Stock options on equity net | ₱ 726 | ₱ 427

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- Definition Disclosure of investments in associates and joint ventures. + References No definition available. + Details
Name: | phi_DisclosureOfInvestmentsInAssociatesAndJointVenturesLineItems
Namespace Prefix: | phi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Stock options on equity net. + References No definition available. + Details
Name: | phi_StockOptionsOnEquityNet
Namespace Prefix: | phi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=phi_VoyagerInnovationsHoldingsPteLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |