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Operating Segment Information - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2019 Segment
Disclosure Of Operating Segments [Abstract] |
Number of operating segments | 3
Total percentage of consolidated fixed line subscribers contributed by subsidiaries | 1.00%

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- References No definition available. + Details
Name: | ifrs-full_DisclosureOfOperatingSegmentsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of operating segments. + References No definition available. + Details
Name: | phi_NumberOfOperatingSegments1
Namespace Prefix: | phi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Total percentage of consolidated fixed line subscribers contributed by subsidiaries. + References No definition available. + Details
Name: | phi_TotalPercentageOfConsolidatedFixedLineSubscribersContributedBySubsidiaries
Namespace Prefix: | phi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration