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Debt Instruments at Amortized Cost - Summary of Debt Instruments at Amortized Cost (Detail) - PHP (₱)
₱ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about financial instruments [Line Items]    
Investment in debt securities and other long-term investments ₱ 395 ₱ 595
Less: Current portion of debt instrument at amortized cost (Note 27) 25 200
Noncurrent portion of debt instrument at amortized cost (Note 27) 370 395
Retail Treasury Bonds [Member]    
Disclosure of detailed information about financial instruments [Line Items]    
Investment in debt securities and other long-term investments 340 440
Fixed Rate Treasury Notes, or FXTN [Member]    
Disclosure of detailed information about financial instruments [Line Items]    
Investment in debt securities and other long-term investments ₱ 55 55
BDO Asean Bonds [Member]    
Disclosure of detailed information about financial instruments [Line Items]    
Investment in debt securities and other long-term investments   ₱ 100