Investments in Associates and Joint Ventures - Carrying Value of PCEV's Investments in VIH (Parenthetical) (Detail) - PHP (₱) ₱ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
VIH [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Stock options on equity net	₱ 726	₱ 427

Disclosure of investments in associates and joint ventures.

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