Investments in Associates and Joint Ventures - Changes in Accumulated Impairment Losses (Detail) - PHP (₱) ₱ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Balances at beginning of the year	₱ 52,764
Balances at end of the year	52,425	₱ 52,764
Fixed asset impairment [Member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Balances at beginning of the year	2,763	2,875
Adjustments	0	(112)
Balances at end of the year	₱ 2,763	₱ 2,763

- Definition

The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]

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