The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2018-01-01
-Paragraph 24
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2018-03-01&anchor=para_24_a&doctype=Standard
-URIDate 2018-03-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2018-01-01
-Paragraph B16
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B16&doctype=Appendix&seq=2
-URIDate 2018-03-16

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 54
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_e&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_InvestmentAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of investments in associates in an entity's separate financial statements. [Refer: Associates [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2018-01-01
-Paragraph 10
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_10&doctype=Standard
-URIDate 2018-03-16

+ Details

Name:	ifrs-full_InvestmentsInAssociates
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Joint ventures [member]]

+ References

+ Details

Name:	ifrs-full_InvestmentsInJointVentures
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

- Details

Name:	ifrs-full_JointVenturesAxis=phi_VegaTelecomIncBowArkenandBrightshareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_JointVenturesAxis=phi_PhilippinesInternetHoldingSARLMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_JointVenturesAxis=phi_MultisysMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=phi_MediaQuestPhilippineDepositaryReceiptsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=phi_DigitelCrossingIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=phi_AppcardIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=phi_AsiaOutsourcingBetaLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=phi_PhunwareIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Investments in Associates and Joint Ventures - Carrying Value of Investments in Associates (Detail) - PHP (₱) ₱ in Millions	Dec. 31, 2018	Dec. 03, 2018	Nov. 08, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in associates	₱ 20,498			₱ 12,041
Carrying value of investments in joint ventures	34,929			34,089
Total carrying value of investments in associates and joint ventures	55,427			46,130	₱ 56,858
VTI, Bow Arken and Brightshare [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in joint ventures	32,541			32,550
Philippines Internet Holding S.a.r.l. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in joint ventures				1,539
Multisys [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in joint ventures	2,388	₱ 550	₱ 2,150
Voyager Innovations Holdings, Pte. Ltd. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in associates	10,487
MediaQuest PDRs [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in associates	9,262			10,835
Total carrying value of investments in associates and joint ventures	10,022			8,696
Digitel Crossing, Inc. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in associates	591			510
Appcard, Inc [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in associates	122			234
Asia Outsourcing Beta Limited [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in associates	₱ 36			78
Phunware, Inc [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Carrying value of investments in associates				₱ 384