The amounts of income taxes payable in future periods in respect of taxable temporary differences. [Refer: Temporary differences [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2019-01-01
-Paragraph 81
-Subparagraph g
-Clause i
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-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 54
-Subparagraph o
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_o&doctype=Standard
-URIDate 2019-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
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-Paragraph 56
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_56&doctype=Standard
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Income Taxes - Summary of Analysis of Net Deferred Income Tax Liabilities (Detail) - PHP (₱) ₱ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Deferred income tax liabilities	₱ (2,583)	₱ (2,981)	₱ (3,366)
Costs [Member] \| After 12 months [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Deferred income tax liabilities	(2,376)	(2,743)
Costs [Member] \| Within 12 months [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Deferred income tax liabilities	₱ (207)	₱ (238)