Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - PHP (₱) ₱ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash And Cash Equivalents [Abstract]
Cash on hand and in banks (Note 28)	₱ 6,351	₱ 6,384
Temporary cash investments (Note 28)	26,554	32,338
Cash and cash equivalents	₱ 32,905	₱ 38,722	₱ 46,455	₱ 26,659

The amount of cash on hand and demand deposits. [Refer: Cash on hand]

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The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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A classification of cash equivalents representing short-term investments. [Refer: Cash equivalents]

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