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Investments in Associates and Joint Ventures - Carrying Value of PCEV's Investments in VIH (Parenthetical) (Detail) - PHP (₱) ₱ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of Investments in Associates and Joint Ventures [Line Items] |  |  |
Equity | ₱ 119,665 | ₱ 116,290 | ₱ 116,666
VIH [Member] |  |  |
Disclosure of Investments in Associates and Joint Ventures [Line Items] |  |  |
Stock options on equity net | 427 | 134 |
Equity | ₱ 3,651 | ₱ 4,982 |

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