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Financial Assets and Liabilities - Summary of Analysis of Gains (Losses) on Derivative Financial Instruments (Detail) - PHP (₱) ₱ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Net Gain Losses On Derivative Financial Instruments [Abstract] |  |  |
Gains (losses) on derivative financial instruments | ₱ 1,651 | ₱ (284) | ₱ (233)
Hedge costs | (251) | (94) | (51)
Net gains (losses) on derivative financial instruments (Note 5) | ₱ 1,400 | ₱ (378) | ₱ (284)

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- Definition Net​ gain ​losses​ on derivative ​financial ​instruments. + References No definition available. + Details
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