v3.26.1
Income Taxes - Summary of Components of Net Deferred Income Tax Assets (Liabilities) (Detail) - PHP (₱)
₱ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets ₱ 11,582 ₱ 14,643
Net deferred income tax liabilities 75 60
Accumulated provision for expected credit losses [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 3,990 3,618
Net deferred income tax liabilities (194) (173)
Lease liability over ROU under IFRS 16 [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 3,185 3,240
Unearned revenues [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 2,781 3,914
Depreciation due to shortened estimated useful life of assets [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 2,550 2,480
Pension and other employee benefits [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 1,680 2,607
Unrealized foreign exchange losses [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 1,605 1,404
Unamortized past service pension costs [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 1,439 1,908
Accumulated write-down of inventories to net realizable values [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 284 371
NOLCO [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 13 266
Excess MCIT over RCIT [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 13 13
Taxes and duties capitalized [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets (176) (167)
Derivative financial instruments [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets 265 (203)
Customer list and trademark [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets (456) (361)
Capitalized charges and others [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax assets (5,591) (4,447)
Investment Property [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax liabilities 388 389
Unrealized foreign exchange gains [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Net deferred income tax liabilities 7 22
Others [Member]    
Disclosure Of Temporary Difference Unused Tax Losses And Unused Tax Credits [Line Items]    
Others ₱ (126) ₱ (178)