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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Net Gain Losses On Derivative Financial Instruments [Abstract] |  |  |
Gains (losses) on derivative financial instruments (Note 4) | ₱ 1,436 | ₱ 2,572 | ₱ 1,651
Hedge costs | (238) | (250) | (251)
Net gains (losses) on derivative financial instruments (Notes 4 and 5) | ₱ 1,198 | ₱ 2,322 | ₱ 1,400

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