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Inventories and Supplies - Summary of Inventories and Supplies (Detail) - PHP (₱)
₱ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Inventories And Supplies [Line Items]      
Cost ₱ 3,306 ₱ 3,340  
Allowance for inventory obsolescence and write-down 1,509 1,612 ₱ 2,218
Net realizable value 3,306 3,340  
Cost [Member]      
Disclosure Of Inventories And Supplies [Line Items]      
Cost 4,815 4,952  
Commercial [Member]      
Disclosure Of Inventories And Supplies [Line Items]      
Allowance for inventory obsolescence and write-down 228 306  
Net realizable value 2,258 1,747  
Commercial [Member] | Cost [Member]      
Disclosure Of Inventories And Supplies [Line Items]      
Cost 2,486 2,053  
Network [Member]      
Disclosure Of Inventories And Supplies [Line Items]      
Cost 1,945 1,971  
Allowance for inventory obsolescence and write-down 1,180 1,020  
Net realizable value 765 951  
Others [Member]      
Disclosure Of Inventories And Supplies [Line Items]      
Cost 384 928  
Allowance for inventory obsolescence and write-down 101 286  
Net realizable value ₱ 283 ₱ 642