v3.26.1
Financial Assets and Liabilities - Summary of Derivative Financial Instruments (Detail)
12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
PHP (₱)
Dec. 31, 2024
PHP (₱)
Dec. 31, 2025
PHP (₱)
Dec. 31, 2024
USD ($)
Dec. 31, 2024
PHP (₱)
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate 1 58.79        
Net Mark-to- market Gains (Losses)   ₱ 743,000,000 ₱ 318,000,000      
Long Term Foreign Currency Options | Smart [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate 48 48        
Long Term Foreign Currency Options | Smart [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate 48 48        
Transactions Not Designated As Hedges [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Net Mark-to- market Gains (Losses)   ₱ 203,000,000 10,000,000      
Transactions Not Designated As Hedges [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Net Mark-to- market Gains (Losses)   146,000,000 (15,000,000)      
Transactions Not Designated As Hedges [Member] | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Net Mark-to- market Gains (Losses)   57,000,000 25,000,000      
Transactions Designated As Hedges            
Disclosure of detailed information about financial instruments [Line Items]            
Net Mark-to- market Gains (Losses)   540,000,000 308,000,000      
Transactions Designated As Hedges | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Net Mark-to- market Gains (Losses)   377,000,000 164,000,000      
Transactions Designated As Hedges | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Net Mark-to- market Gains (Losses)   ₱ 163,000,000 144,000,000      
Termination Date Various Dates in 2024 [Member] | US Dollar Liabilities [Member] | Various Dates in 2023 and 2024 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 1,191,000,000          
Trade Date Various dates in 2023 and 2024 Various dates in 2023 and 2024        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in 2024 Various dates in 2024        
Weighted Average Foreign Exchange Rate   56.93        
Termination Date Various Dates in 2024 [Member] | US Dollar Liabilities [Member] | Various Dates in 2023 and 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 45,000,000          
Trade Date Various dates in 2023 and 2024 Various dates in 2023 and 2024        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in 2024 Various dates in 2024        
Weighted Average Foreign Exchange Rate   55.6        
Termination Date Various Dates in 2024 [Member] | US Dollar Liabilities [Member] | Various Dates in 2023 and 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   56        
Termination Date Various Dates in 2024 [Member] | US Dollar Liabilities [Member] | Various Dates in 2023 and 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   57        
Termination Date Various Dates in 2024 [Member] | US Dollar Liabilities [Member] | Various Dates in June 2023 to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 1,063,000,000          
Trade Date Various dates in June 2023 to December 2024 Various dates in June 2023 to December 2024        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in 2024 Various dates in 2024        
Weighted Average Foreign Exchange Rate   56.66        
Termination Date Various Dates in January to July 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in October to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 303,000,000          
Trade Date Various dates inOctober to December 2024 Various dates inOctober to December 2024        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates inJanuary to July 2025 Various dates inJanuary to July 2025        
Weighted Average Foreign Exchange Rate   58.45        
Notional Amount | $         $ 303,000,000  
Net Mark-to- market Gains (Losses)     (10,000,000)      
Termination Date Various Dates in July to December 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in October to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 14,000,000          
Trade Date Various dates inOctober to December 2024 Various dates inOctober to December 2024        
Underlying Transaction U.S. Dollar Revenues U.S. Dollar Revenues        
Termination Date Various dates inJuly to December 2025 Various dates inJuly to December 2025        
Weighted Average Foreign Exchange Rate   58.65        
Notional Amount | $         14,000,000  
Net Mark-to- market Gains (Losses)     (2,000,000)      
Termination Date Various Dates in July to December 2025 [Member] | US Dollar Revenues [Member] | Various dates in October to November 2024 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 5,000,000          
Trade Date Various dates inOctober to November 2024 Various dates inOctober to November 2024        
Underlying Transaction U.S. Dollar Revenues U.S. Dollar Revenues        
Termination Date Various dates inJuly to November 2025 Various dates inJuly to November 2025        
Weighted Average Foreign Exchange Rate   58.48        
Notional Amount | $         5,000,000  
Net Mark-to- market Gains (Losses)     (2,000,000)      
Termination Date Various Dates in March 2025 to May 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 766,000,000          
Trade Date Various dates inJanuary to December 2025 Various dates inJanuary to December 2025        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates inMarch 2025 to May 2026 Various dates inMarch 2025 to May 2026        
Weighted Average Foreign Exchange Rate   57.75        
Notional Amount | $ $ 243,000,000          
Net Mark-to- market Gains (Losses)   ₱ 165,000,000        
Termination Date Various dates in December 2025 to December 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in June to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 38,000,000          
Underlying Transaction U.S. Dollar Revenues U.S. Dollar Revenues        
Termination Date Various dates in December 2025 to December 2026 [Member] | US Dollar Revenues [Member] | Various Dates in June to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Trade Date Various dates inJune to December 2025 Various dates inJune to December 2025        
Termination Date Various dates in December 2025 to December 2026 Various dates in December 2025 to December 2026        
Weighted Average Foreign Exchange Rate   58.37        
Notional Amount | $ $ 37,000,000          
Net Mark-to- market Gains (Losses)   ₱ (27,000,000)        
Termination Date Various dates in March to July 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January 2026 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 72,000,000          
Trade Date Various dates in January 2026 Various dates in January 2026        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in March to July 2026 Various dates in March to July 2026        
Weighted Average Foreign Exchange Rate   59.36        
Termination Date Various Dates in December 2026 [Member] | US Dollar Revenues [Member] | Various Dates in January 2026 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 2,000,000          
Trade Date Various dates inJanuary 2026 Various dates inJanuary 2026        
Underlying Transaction U.S. Dollar Revenues U.S. Dollar Revenues        
Termination Date Various dates in December 2026 Various dates in December 2026        
Weighted Average Foreign Exchange Rate   60.13        
Termination Date Various dates in March to August 2026 | US Dollar Liabilities [Member] | Various Dates in January 2026 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 77,000,000          
Trade Date Various dates inJanuary 2026 Various dates inJanuary 2026        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in March to August 2026 Various dates in March to August 2026        
Weighted Average Foreign Exchange Rate   59.01        
Termination Date January 2026 [Member] | U.S. Dollar Cash [Member] | Various Dates in December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 22,000,000          
Trade Date Various dates inDecember 2025 Various dates inDecember 2025        
Underlying Transaction U.S. Dollar Cash U.S. Dollar Cash        
Termination Date January 2026 January 2026        
Weighted Average Foreign Exchange Rate   58.7        
Notional Amount | $ $ 22,000,000          
Net Mark-to- market Gains (Losses)   ₱ (2,000,000)        
Termination date various dates in December 2025 to November 2026 | US Dollar Revenues [Member] | Various Dates in June to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 23,000,000          
Trade Date Various dates inJune to December 2025 Various dates inJune to December 2025        
Underlying Transaction U.S. Dollar Revenues U.S. Dollar Revenues        
Termination Date Various dates in December 2025 to November 2026 Various dates in December 2025 to November 2026        
Weighted Average Foreign Exchange Rate   58.22        
Notional Amount | $ $ 21,000,000          
Net Mark-to- market Gains (Losses)   ₱ (16,000,000)        
Termination Date Various Dates in January 2025 to March 2026 | US Dollar Liabilities [Member] | Various Dates in January to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 550,000,000          
Trade Date Various dates in January to December 2025 Various dates in January to December 2025        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates inJanuary 2025 to March 2026 Various dates inJanuary 2025 to March 2026        
Weighted Average Foreign Exchange Rate   57.83        
Notional Amount | $ $ 120,000,000          
Net Mark-to- market Gains (Losses)   ₱ 46,000,000        
Termination Date Various dates in January to April 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in September to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 8,000,000          
Trade Date Various dates in Septemberto December 2024 Various dates in Septemberto December 2024        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates inJanuary to April 2025 Various dates inJanuary to April 2025        
Weighted Average Foreign Exchange Rate   57.01        
Notional Amount | $         8,000,000  
Net Mark-to- market Gains (Losses)     (4,000,000)      
Termination Date Various dates in January to April 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in September to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   57.41        
Termination Date Various dates in January to April 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in September to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   58.63        
Termination Date Various Dates in January to June 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in October to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 204,000,000          
Trade Date Various dates inOctober to December 2024 Various dates inOctober to December 2024        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in January to June 2025 Various dates in January to June 2025        
Weighted Average Foreign Exchange Rate   58.18        
Notional Amount | $         204,000,000  
Net Mark-to- market Gains (Losses)     31,000,000      
Termination Date Various Dates in September to December 2024 [Member] | US Dollar Liabilities [Member] | Various dates in March to September 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 16,000,000          
Trade Date Various dates in March to September 2024 Various dates in March to September 2024        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in September to December 2024 Various dates in September to December 2024        
Weighted Average Foreign Exchange Rate   56.4        
Termination Date Various Dates in September to December 2024 [Member] | US Dollar Liabilities [Member] | Various dates in March to September 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   56.84        
Termination Date Various Dates in September to December 2024 [Member] | US Dollar Liabilities [Member] | Various dates in March to September 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   57.76        
Termination Date Various Dates in April 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in September to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 10,000,000          
Trade Date Various dates in Septemberto December 2024 Various dates in Septemberto December 2024        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in April 2025 Various dates in April 2025        
Weighted Average Foreign Exchange Rate   57        
Notional Amount | $         $ 10,000,000  
Net Mark-to- market Gains (Losses)     (3,000,000)      
Termination Date Various Dates in April 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in September to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   57.59        
Termination Date Various Dates in April 2025 [Member] | US Dollar Liabilities [Member] | Various Dates in September to December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   58.32        
Termination Date Various Dates in April 2025 [Member] | US Dollar Revenues [Member] | Various dates in December 2024 [Member] | Transactions Not Designated As Hedges [Member] | Forward Foreign Exchange Contracts [Member] | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 1,000,000          
Trade Date Various dates in January 2026 Various dates in January 2026        
Underlying Transaction U.S. Dollar Revenues U.S. Dollar Revenues        
Termination Date Various dates in December 2026 Various dates in December 2026        
Weighted Average Foreign Exchange Rate   59.88        
Termination Date Various Dates In April 2025 To April 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 22,000,000          
Trade Date Various dates in Januaryto December 2025 Various dates in Januaryto December 2025        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in April 2025 to April 2026 Various dates in April 2025 to April 2026        
Weighted Average Foreign Exchange Rate   56.71        
Notional Amount | $ $ 6,000,000          
Net Mark-to- market Gains (Losses)   ₱ 10,000,000        
Termination Date Various Dates In April 2025 To April 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   56.99        
Termination Date Various Dates In April 2025 To April 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   58.74        
Termination Date Various Dates in April 2025 to May 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 58,000,000          
Trade Date Various dates in January to December 2025 Various dates in January to December 2025        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates inApril 2025 to May 2026 Various dates inApril 2025 to May 2026        
Weighted Average Foreign Exchange Rate   57.71        
Notional Amount | $ $ 18,000,000          
Net Mark-to- market Gains (Losses)   ₱ 27,000,000        
Termination Date Various Dates in April 2025 to May 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate 58.03 58.03        
Termination Date Various Dates in April 2025 to May 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to December 2025 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   59.55        
Termination Date Various Dates in April to December 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to February 2026 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 11,000,000          
Trade Date Various dates in Januaryto February 2026 Various dates in Januaryto February 2026        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in April to December 2026 Various dates in April to December 2026        
Weighted Average Foreign Exchange Rate   57.76        
Termination Date Various Dates in April to December 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to February 2026 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   58        
Termination Date Various Dates in April to December 2026 [Member] | US Dollar Liabilities [Member] | Various Dates in January to February 2026 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | PLDT [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   59.56        
Termination Date January 23, 2031 [Member] | Various dates in July 2020 and February to March 2021 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | PLDT [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate 49.58 49.58        
Termination Date January 23, 2031 [Member] | Various dates in July 2020 and February to March 2021 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | PLDT [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate 49.67 49.67        
Termination Date January 23, 2031 [Member] | Various Dates in July 2020 and July 2025 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | PLDT [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate 49.67 49.67        
Termination Date January 23, 2031 [Member] | Three Hundred M Notes Two Thousand Thirty One | Various dates in July 2020 and February to March 2021 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount   ₱ 225,000,000        
Trade Date Various dates in July 2020 and February to March 2021 Various dates in July 2020 and February to March 2021        
Underlying Transaction 300M Notes 2031 300M Notes 2031        
Termination Date January 23, 2031 January 23, 2031        
Weighted Average Hedge Cost 1.20% 1.20%        
Weighted Average Foreign Exchange Rate   49.58        
Notional Amount       ₱ 222,000,000   ₱ 225,000,000
Net Mark-to- market Gains (Losses)   ₱ 271,000,000 86,000,000      
Termination Date January 23, 2031 [Member] | Three Hundred M Notes Two Thousand Thirty One | Various dates in July 2020 and February to March 2021 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | PLDT [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   55.27        
Termination Date January 23, 2031 [Member] | Three Hundred M Notes Two Thousand Thirty One | Various Dates in July 2020 and July 2025 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | PLDT [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount   ₱ 109,000,000        
Trade Date Various dates in July 2020 and July 2025 Various dates in July 2020 and July 2025        
Underlying Transaction 300M Notes 2031 300M Notes 2031        
Termination Date January 23, 2031 January 23, 2031        
Weighted Average Hedge Cost 1.21% 1.21%        
Weighted Average Foreign Exchange Rate   49.67        
Notional Amount       108,000,000   109,000,000
Net Mark-to- market Gains (Losses)   ₱ 106,000,000 78,000,000      
Termination Date January 23, 2031 [Member] | Three Hundred M Notes Two Thousand Thirty One | Various Dates in July 2020 and July 2025 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | PLDT [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   55.35        
Termination Date December 13, 2030 [Member] | US$140 PNB Loan [Member] | February to April 2021 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount   ₱ 109,000,000        
Trade Date February to April 2021 February to April 2021        
Underlying Transaction US$140 PNB Loan US$140 PNB Loan        
Termination Date December 13, 2030 December 13, 2030        
Weighted Average Hedge Cost 1.63% 1.63%        
Weighted Average Foreign Exchange Rate   48        
Notional Amount       ₱ 55,000,000   ₱ 66,000,000
Net Mark-to- market Gains (Losses)   ₱ 163,000,000 ₱ 144,000,000      
Termination Date December 13, 2030 [Member] | US$140 PNB Loan [Member] | February to April 2021 [Member] | Transactions Designated As Hedges | Long Term Foreign Currency Options | Smart [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   53.34        
Termination Date Various Dates in May to September 2026 [member] | US Dollar Liabilities [Member] | Various Dates in January to February 2026 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member]            
Disclosure of detailed information about financial instruments [Line Items]            
Original Notional Amount | $ $ 20,000,000          
Trade Date Various dates in January to February 2026 Various dates in January to February 2026        
Underlying Transaction U.S. Dollar Liabilities U.S. Dollar Liabilities        
Termination Date Various dates in May to September 2026 Various dates in May to September 2026        
Weighted Average Foreign Exchange Rate   58.07        
Termination Date Various Dates in May to September 2026 [member] | US Dollar Liabilities [Member] | Various Dates in January to February 2026 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member] | Condition One            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   58.3        
Termination Date Various Dates in May to September 2026 [member] | US Dollar Liabilities [Member] | Various Dates in January to February 2026 [Member] | Transactions Not Designated As Hedges [Member] | Foreign Exchange Options Seagull | Smart [Member] | Condition Two            
Disclosure of detailed information about financial instruments [Line Items]            
Weighted Average Foreign Exchange Rate   59.65