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v3.21.1

Trade and Other Receivables - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2020
Bottom of range [member] |
Disclosure Of Financial Assets [Line Items] |
Trade and other receivable settlement terms | 30 days
Top of range [member] |
Disclosure Of Financial Assets [Line Items] |
Trade and other receivable settlement terms | 180 days

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfFinancialAssetsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Trade and other receivables settlement term. + References No definition available. + Details
Name: | phi_TradeAndOtherReceivablesSettlementTerm
Namespace Prefix: | phi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |