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Income Taxes - Summary of Analysis of Net Deferred Income Tax Assets (Detail) - PHP (₱)
₱ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]      
Deferred income tax assets ₱ 14,643 ₱ 18,172 ₱ 17,636
Costs [Member]      
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]      
Deferred income tax assets 14,643 18,172  
Costs [Member] | After 12 months [Member]      
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]      
Deferred income tax assets 11,449 15,423  
Costs [Member] | Less than 1 year [Member]      
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]      
Deferred income tax assets ₱ 3,194 ₱ 2,749