Income and Expenses - Summary of Financing Costs - Net (Detail) - PHP (₱) ₱ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Analysis Of Income And Expense [Abstract]
Interest on loans and other related items (Notes 21 and 28)	₱ 7,830	₱ 7,522	₱ 6,289
Accretion on financial liabilities (Notes 21 and 28)	219	230	231
Financing charges	137	168	109
Capitalized interest (Note 9)	(816)	(566)	(370)
Total financing costs – net	₱ 7,370	₱ 7,354	₱ 6,259

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- Definition

The amount of costs associated with financing activities of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of interest costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of interest expense on bank loans and overdrafts. [Refer: Interest expense; Bank overdrafts]

+ References

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The amount of finance costs that the entity does not separately disclose in the same statement or note. [Refer: Finance costs]

+ References

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- Definition

Accretion on financial liabilities.

+ References

No definition available.

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