Adjustments for gain (loss) on disposals investments in subsidiaries, joint ventures and associates to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries, joint ventures and associates; Profit (loss)]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 20
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_20&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_AdjustmentsForGainLossOnDisposalOfInvestmentsInSubsidiariesJointVenturesAndAssociates
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2017-01-01
-Paragraph 24
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2017-03-01&anchor=para_24_a&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph B16
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_B16&doctype=Appendix&seq=2
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_e&doctype=Standard
-URIDate 2017-03-09

+ Details

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

- Definition

The cash inflow from sales of investments accounted for using the equity method. [Refer: Investments accounted for using equity method]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_16&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount recognised as an increase of the carrying amount of an asset or cash-generating unit to its recoverable amount when an impairment loss had been previously recognised. [Refer: Impairment loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2017-01-01
-Paragraph 130
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_130_b&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2017-01-01
-Paragraph 130
-Subparagraph d
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2017-03-01&anchor=para_130_d_ii&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ReversalOfImpairmentLoss
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The entity's share of the other comprehensive income of associates and joint ventures accounted for using the equity method, net of tax. [Refer: Associates [member]; Investments accounted for using equity method; Joint ventures [member]; Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph B16
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_B16_c&doctype=Appendix&seq=2
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective on first application of IFRS 9
-Name IFRS
-Number 4
-IssueDate 2017-01-01
-Paragraph 39M
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=4&date=2017-03-01&anchor=para_39M_b&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 91
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_91_a&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The entity's share of the profit (loss) of associates and joint ventures accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method; Joint ventures [member]; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2017-01-01
-Paragraph 23
-Subparagraph g
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2017-03-01&anchor=para_23_g&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2017-01-01
-Paragraph 28
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2017-03-01&anchor=para_28_e&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 82
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_82_c&doctype=Standard
-URIDate 2017-03-09

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective on first application of IFRS 9
-Name IFRS
-Number 4
-IssueDate 2017-01-01
-Paragraph 39M
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=4&date=2017-03-01&anchor=para_39M_b&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

- Definition

Investments in Associates and Joint Ventures, Dividends

+ References

No definition available.

+ Details

Name:	phi_InvestmentsInAssociatesAndJointVenturesDividends
Namespace Prefix:	phi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Investments in Associates and Joint Ventures, Translation And Other Adjustments

+ References

No definition available.

+ Details

Name:	phi_InvestmentsInAssociatesAndJointVenturesTranslationAndOtherAdjustments
Namespace Prefix:	phi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Details

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

- Details

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

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=phi_AccumulatedEquityShareInNetEarningOfAssociatesAndJointVenturesMember
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_DigitelCrossingIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Investments in Associates and Joint Ventures - Summary of Changes in Accumulated Equity Share in Net Earnings of Associates and Joint Ventures (Detail) - PHP (₱) ₱ in Millions					7 Months Ended	12 Months Ended
	Jun. 13, 2017	May 30, 2016	Apr. 14, 2015	Jun. 24, 2014	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Balance at beginning of the year						₱ 56,858	₱ 48,703
Realized portion of deferred gain on the transfer of Beacon and Manila Electric Company, or Meralco, shares			₱ 2,838	₱ 1,418		6,512	7,365	₱ 2,838
Equity share in net earnings (losses) of associates and joint ventures						2,906	1,181	3,241
Disposals						(14,884)	(17,000)
Balance at end of the year					₱ 56,858	46,130	56,858	48,703
MediaQuest PDRs [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Balance at beginning of the year						8,267
Balance at end of the year					8,267	8,696	8,267
Beacon Electric Asset Holdings, Inc. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Realized portion of deferred gain on the transfer of Beacon and Manila Electric Company, or Meralco, shares	₱ 4,962	₱ 4,962
Vega Telecom Inc. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures					(1,027)	55
Accumulated equity share in net earnings of associates and joint ventures [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Balance at beginning of the year						1,285	9,441
Realized portion of deferred gain on the transfer of Beacon and Manila Electric Company, or Meralco, shares						4,962	4,962
Equity share in net earnings (losses) of associates and joint ventures						2,906	1,181
Reversal of impairment						201
Share in the other comprehensive loss of associates and joint ventures accounted for using the equity method						(312)	(91)
Dividends						(791)	(4,389)
Disposals						(9,610)	(9,617)
Translation and other adjustments						120	(202)
Balance at end of the year					₱ 1,285	(1,239)	1,285	₱ 9,441
Accumulated equity share in net earnings of associates and joint ventures [Member] \| Asia Outsourcing Beta Limited [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures						2,050	396
Accumulated equity share in net earnings of associates and joint ventures [Member] \| MediaQuest PDRs [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures						(27)	(102)
Accumulated equity share in net earnings of associates and joint ventures [Member] \| Digitel Crossing, Inc. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures						71	62
Accumulated equity share in net earnings of associates and joint ventures [Member] \| AF Payments, Inc. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures						(130)	(127)
Accumulated equity share in net earnings of associates and joint ventures [Member] \| Beacon Electric Asset Holdings, Inc. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures						886	2,089
Accumulated equity share in net earnings of associates and joint ventures [Member] \| Philippines Internet Holding S.a.r.l. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures						1	(58)
Accumulated equity share in net earnings of associates and joint ventures [Member] \| Vega Telecom Inc. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures						₱ 55	(1,027)
Accumulated equity share in net earnings of associates and joint ventures [Member] \| ECommerce Pay Holding S.a.r.l. [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Equity share in net earnings (losses) of associates and joint ventures							₱ (52)