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Interest-bearing Financial Liabilities - Summary of Long-term Debt (Parenthetical) (Detail)
Dec. 31, 2024
Dec. 31, 2023
Fixed Rate Notes [Member] | Bottom of range [member] | U.S. Dollars [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate 2.50% 2.50%
Fixed Rate Notes [Member] | Top of range [member] | U.S. Dollars [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate 3.45% 3.45%
Term Loans [Member] | Others [Member] | London Interbank Offered Rate [Member] | U.S. Dollars [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, adjustment to interest rate basis   1.05%
Term Loans [Member] | Bottom of range [member] | Others [Member] | SOFR [Member] | U.S. Dollars [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, adjustment to interest rate basis 1.31161% 1.31161%
Term Loans [Member] | Bottom of range [member] | Unsecured Term Loans [Member] | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate   4.00%
Term Loans [Member] | Bottom of range [member] | Unsecured Term Loans [Member] | Bangko Sentralng Pilipinas Overnight Rate | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate 0.50% 0.50%
Term Loans [Member] | Bottom of range [member] | Unsecured Term Loans [Member] | Floor Rate [Member] | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate   4.50%
Borrowings, adjustment to interest rate basis 4.50%  
Term Loans [Member] | Bottom of range [member] | Unsecured Term Loans [Member] | TDF [Member] | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate   3.95%
Term Loans [Member] | Top of range [member] | Others [Member] | SOFR [Member] | U.S. Dollars [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, adjustment to interest rate basis   1.47826%
Term Loans [Member] | Top of range [member] | Unsecured Term Loans [Member] | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate 5.35% 5.35%
Term Loans [Member] | Top of range [member] | Unsecured Term Loans [Member] | Bangko Sentralng Pilipinas Overnight Rate | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate 1.00% 1.00%
Term Loans [Member] | Top of range [member] | Unsecured Term Loans [Member] | Floor Rate [Member] | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, adjustment to interest rate basis 4.625% 4.625%
Philippine Peso Debts [Member] | Fixed Rate Retail Bonds [Member] | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate 5.2813%  
Philippine Peso Debts [Member] | Bottom of range [member] | Fixed Rate Retail Bonds [Member] | Philippine Peso [Member]    
Disclosure Of Detailed Information About Borrowings [Line Items]    
Borrowings, interest rate   5.2813%