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Interest Bearing Financial Liabilities - Summary of Obtained Loans Extended And/Or Guaranteed by Export Credit Agencies (Detail)
₱ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2019
PHP (₱)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
PHP (₱)
Dec. 31, 2018
USD ($)
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts ₱ 192,556 $ 25.0 ₱ 176,276  
Corporate Notes [Member] | Philippine Peso Debts [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts 6,152   15,511  
Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date July Twenty Five Two Thousand Twelve [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,500      
Date of Loan Agreement July 25, 2012      
Dates Drawn July 27, 2012      
Outstanding Amounts     282  
Facility Agent Metrobank      
Installments Annual amortization rate of 1% of the issue price on the first-year up to the sixth-year from issue date and the balance payable upon maturity on July 27, 2019      
Prepayments Amount ₱ 1,188      
Prepayments Date July 29, 2013      
Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date September Nineteen Two Thousand Twelve [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 8,800      
Date of Loan Agreement September 19, 2012      
Dates Drawn September 21, 2012      
Outstanding Amounts ₱ 3,599   6,340  
Facility Agent Metrobank      
Installments Series A: 1% annual amortization on the first up to sixth-year, with the balance payable on September 21, 2019;      
Prepayments Amount ₱ 2,055      
Prepayments Date June 21, 2013      
Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date November Twenty Two Thousand Twelve [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 6,200      
Date of Loan Agreement November 20, 2012      
Dates Drawn November 22, 2012      
Outstanding Amounts ₱ 2,255   5,828  
Facility Agent BDO Unibank, Inc., or BDO      
Installments Series A: Annual amortization rate of 1% of the issue price on the first-year up to the sixth- year from issue date and the balance payable upon maturity on November 22, 2019;      
Prepayments Amount ₱ 3,549      
Prepayments Date February 22, 2019      
Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date June Fourteen Two Thousand Thirteen [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,055      
Date of Loan Agreement June 14, 2013      
Dates Drawn June 21, 2013      
Outstanding Amounts ₱ 298   1,932  
Facility Agent Metrobank      
Installments Series A: Annual amortization rate of 1% of the issue price up to the fifth-year and the balance payable upon maturity on September 21, 2019;      
Prepayments Amount ₱ 1,644      
Prepayments Date September 23, 2019      
Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date July Nineteen Two Thousand Thirteen [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,188      
Date of Loan Agreement July 19, 2013      
Dates Drawn July 29, 2013      
Outstanding Amounts     1,129  
Facility Agent Metrobank      
Installments Annual amortization rate of 1% of the issue on the first-year up to the fifth- year from the issue date and the balance payable upon maturity on July 27, 2019      
Prepayments Amount ₱ 1,129      
Prepayments Date April 29, 2019      
Fixed Rate Retail Bonds [Member] | Loan Agreement Date January Twenty Two Two Thousand Fourteen [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 15,000      
Date of Loan Agreement January 22, 2014      
Dates Drawn February 6, 2014      
Outstanding Amounts ₱ 14,965   14,943  
Facility Agent Philippine Depositary Trust Corp.      
Installments Php12.4B – non- amortizing, payable in full upon maturity on February 6, 2021; Php2.6B – non- amortizing payable in full on February 6, 2024      
Prepayments Date —      
Unsecured Term Loan [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts ₱ 18,190   18,351  
Unsecured Term Loan [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement July 1, 2016      
Lender(s) Metrobank      
Dates Drawn February 20, 2017      
Drawn Amount ₱ 3,000      
Paid in full on —      
Outstanding Amounts ₱ 2,929   2,957  
Terms Annual amortization rate of 1% on the first-year up to the ninth-year from initial drawdown date and the balance payable upon maturity on February 22, 2027      
Unsecured Term Loans [Member] | Loan agreement date September 28,2016 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 5,400      
Date of Loan Agreement September 28, 2016      
Lender(s) Union Bank      
Dates Drawn October 24, 2016 and November 21, 2016      
Drawn Amount ₱ 5,400      
Paid in full on —      
Outstanding Amounts ₱ 5,229   5,281  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the sixth-year commencing on the first-year anniversary of the initial drawdown date and the balance payable upon maturity on October 24, 2023      
Series A 1 [member] | Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date July Twenty Five Two Thousand Twelve [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Prepayments Amount ₱ 282      
Prepayments Date April 29, 2019      
Series A 1 [member] | Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date September Nineteen Two Thousand Twelve [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 4,610      
Prepayments Amount ₱ 2,741      
Prepayments Date September 23, 2019      
Series A 1 [member] | Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date November Twenty Two Thousand Twelve [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,775      
Series A 1 [member] | Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date June Fourteen Two Thousand Thirteen [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount 1,735      
Series B1 [Member] | Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date September Nineteen Two Thousand Twelve [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 4,190      
Installments Series B: 1% annual amortization on the first up to ninth-year, with the balance payable on September 21, 2022      
Series B1 [Member] | Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date November Twenty Two Thousand Twelve [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,425      
Installments Series B: Annual amortization rate of 1% of the issue price on the first-year up to the ninth-year from issue date and the balance payable upon maturity on November 22, 2022      
Series B1 [Member] | Corporate Notes [Member] | Philippine Peso Debts [Member] | Loan Agreement Date June Fourteen Two Thousand Thirteen [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 320      
Installments Series B: Annual amortization rate of 1% of the issue price up to the eighth-year and the balance payable upon maturity on September 21, 2022      
Export Credit Agencies-Supported Loans [Member] | Export Kreditnamnden [member] | U.S. Dollar Debts [Member] | Loan amount to finance the supply and services contracts for modernization and expansion project [Member] | Smart Communications, Inc. [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   45.6    
Date of Loan Agreement February 22, 2013      
Lender(s) Nordea Bank, subsequently assigned to SEK on July 3, 2013      
Installments Terms 10 equal semi-annual, commencing 6 months after the applicable mean delivery date      
Final Installment Terms Tranche A1 and B1: July 16, 2018; Tranche A2 and B2: April 15, 2019      
Dates Drawn Various dates in 2013-2014      
Drawn Amount | $   45.6    
Paid in full on July 16, 2018 and April 15, 2019      
Outstanding Amounts     103 $ 2.0
Export Credit Agencies-Supported Loans [Member] | Tranche A1 [Member] | Export Kreditnamnden [member] | U.S. Dollar Debts [Member] | Loan amount to finance the supply and services contracts for modernization and expansion project [Member] | Smart Communications, Inc. [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   25.0    
Paid in full on July 16, 2018      
Export Credit Agencies-Supported Loans [Member] | Tranche A2 [Member] | Export Kreditnamnden [member] | U.S. Dollar Debts [Member] | Loan amount to finance the supply and services contracts for modernization and expansion project [Member] | Smart Communications, Inc. [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   19.0    
Paid in full on April 15, 2019      
Export Credit Agencies-Supported Loans [Member] | Tranche B1 [Member] | Export Kreditnamnden [member] | U.S. Dollar Debts [Member] | Loan amount to finance the supply and services contracts for modernization and expansion project [Member] | Smart Communications, Inc. [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   0.9    
Paid in full on July 16, 2018      
Export Credit Agencies-Supported Loans [Member] | Tranche B2 [Member] | Export Kreditnamnden [member] | U.S. Dollar Debts [Member] | Loan amount to finance the supply and services contracts for modernization and expansion project [Member] | Smart Communications, Inc. [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   0.7    
Paid in full on April 15, 2019      
Term Loans [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts ₱ 154,410   122,470  
Term Loans [Member] | Others One        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts ₱ 7,252 143.0 8,456 161.0
Term Loans [Member] | Others One | Borrowing Drawn Date One [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Dates Drawn March 2, 2015      
Drawn Amount | $   10.0    
Term Loans [Member] | Others One | Loan amount to finance the supply of GSM mobile telephone equipment and related services with agreement date January 16, 2013 [Member] | January Sixteen Two Thousand Thirteen [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   300.0    
Date of Loan Agreement January 16, 2013      
Lender(s) Syndicate of Banks with MUFG Bank, Ltd. as Facility Agent      
Installments Terms 9 equal semi-annual installment, commencing on the date which falls 12 months after the date of the loan agreement, with final installment on January 16, 2018      
Dates Drawn Various dates in 2013      
Drawn Amount | $   300.0    
Paid in full on January 16, 2018      
Term Loans [Member] | Others One | Loan Amount To Finance The Supply Of Gsm Mobile Telephone Equipment And Related Services With Agreement Date March Twenty Five Two Thousand Thirteen [member] | March twenty five two thousand thirteen loan agreement [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   50.0    
Date of Loan Agreement March 25, 2013      
Lender(s) FEC      
Installments Terms 9 equal semi-annual installment, commencing six months after drawdown date, with final installment on March 23, 2018      
Dates Drawn Various dates in 2013 and 2014      
Drawn Amount | $   32.0    
Cancelled Undrawn Amount | $   18.0    
Paid in full on March 23, 2018      
Term Loans [Member] | Others One | Loan Amount To Finance The Supply Of Gsm Mobile Telephone Equipment And Related Services With Agreement Date May Thirty First Two Thousand Thirteen [member] | May thirty first two thousand thirteen loan agreement [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   80.0    
Date of Loan Agreement May 31, 2013      
Lender(s) China Banking Corporation, or CBC      
Installments Terms 10 equal semi-annual installment, commencing six months after drawdown date, with final installment on May 31, 2018      
Dates Drawn September 25, 2013      
Drawn Amount | $   80.0    
Paid in full on May 31, 2018      
Term Loans [Member] | Others One | Loan Amount To Finance The Supply Of GSM Mobile Telephone Equipment And Related Services With Agreement Date June Twenty Two Thousand Thirteen [member] | June twenty two thousand thirteen loan agreement [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   120.0    
Date of Loan Agreement June 20, 2013      
Lender(s) Mizuho Bank Ltd. and Sumitomo Mitsui Banking Corporation, or Sumitomo, with Sumitomo as Facility Agent      
Installments Terms 8 equal semi-annual installment, commencing six months after drawdown date, with final installment on June 20, 2018      
Dates Drawn September 25, 2013      
Drawn Amount | $   120.0    
Paid in full on June 20, 2018      
Term Loans [Member] | Others One | Loan Amount To Finance The Supply Of GSM Mobile Telephone Equipment And Related Services With Loan Agreement March Seven Two Thousand Fourteen [member] | March 7, 2014 Loan Agreement One [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   100.0    
Date of Loan Agreement March 7, 2014      
Lender(s) MUFG Bank, Ltd.      
Installments Terms 9 equal semi-annual installment, commencing 12 months after drawdown date, with final installment on March 7, 2019      
Dates Drawn Various dates in 2014      
Drawn Amount | $   90.0    
Paid in full on March 7, 2019      
Outstanding Amounts     583 11.0
Term Loans [Member] | Others One | Loan Amount To Finance The Supply Of Gsm Mobile Telephone Equipment And Related Services With Agreement Date May 14, 2014 [member] | May fourteen two thousand fourteen loan agreement [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   50.0    
Date of Loan Agreement May 14, 2014      
Lender(s) Mizuho Bank Ltd.      
Installments Terms 9 equal semi-annual installment, commencing 11 months after drawdown date, with final installment on May 14, 2019      
Dates Drawn July 1, 2014      
Drawn Amount | $   50.0    
Paid in full on May 14, 2019      
Outstanding Amounts     291 6.0
Term Loans [Member] | Others One | Loan Amount To Finance The Supply Of Gsm Mobile Telephone Equipment And Related Services With Agreement Date August 5, 2014 [member] | August fifth two thousand fourteen loan agreement [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   100.0    
Date of Loan Agreement August 5, 2014      
Lender(s) Philippine National Bank, or PNB      
Installments Terms Annual amortization rate of 1% of the issue price on the first-year up to the fifth-year from the initial drawdown date, with final installment on August 11, 2020      
Dates Drawn Various dates in 2014      
Drawn Amount | $   100.0    
Paid in full on —      
Outstanding Amounts ₱ 4,826 95.0 5,046 96.0
Term Loans [Member] | Others One | August twenty nine two thousand fourteen loan agreement [member] | August twenty nine two thousand fourteen loan agreement [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   50.0    
Date of Loan Agreement August 29, 2014      
Lender(s) Metrobank      
Installments Terms Annual amortization rate of 1% of the issue price payable semi- annually starting on the first-year up to the fifth-year from the initial drawdown date and the balance payable upon maturity on September 2, 2020      
Dates Drawn September 2, 2014      
Drawn Amount | $   50.0    
Paid in full on —      
Outstanding Amounts ₱ 2,426 48.0 2,536 48.0
Term Loans [Member] | Others Two        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts 47,416   48,604  
Term Loans [Member] | Others Two | U.S. Dollar Debts [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts ₱ 9,777 192.0 14,793 281.0
Term Loans [Member] | Others Two | U.S. Dollar Debts [Member] | February Twenty Six Two Thousand Fifteen Loan Agreement | Costs [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   200.0    
Date of Loan Agreement February 26, 2015      
Lender(s) MUFG Bank, Ltd.      
Installments Terms Commencing 36 months after loan date, with semi- annual amortization of 23.75% of the loan amount on the first and second repayment dates and seven semi-annual amortizations of 7.5% starting on the third repayment date, with final installment on February 25, 2022      
Dates Drawn Various dates in 2015      
Drawn Amount | $   200.0    
Paid in full on —      
Outstanding Amounts ₱ 3,797 74.0 5,492 104.0
Term Loans [Member] | Others Two | U.S. Dollar Debts [Member] | Loan agreement date March 4, 2015 [Member] | Costs [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   200.0    
Date of Loan Agreement March 4, 2015      
Lender(s) Mizuho Bank Ltd.      
Installments Terms 9 equal semi-annual installments commencing on the date which falls 12 months after the loan date, with final installment on March 4, 2020      
Dates Drawn Various dates in 2014      
Drawn Amount | $   90.0    
Paid in full on March 4, 2020      
Outstanding Amounts ₱ 1,128 22.0 3,490 66.0
Term Loans [Member] | Others Two | U.S. Dollar Debts [Member] | Loan agreement date January 31, 2017 [Member] | Costs [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   25.0    
Date of Loan Agreement January 31, 2017      
Lender(s) NTT Finance Corporation      
Installments Terms Non-amortizing, payable upon maturity on March 27, 2024      
Dates Drawn March 30, 2017      
Drawn Amount | $   25.0    
Paid in full on —      
Outstanding Amounts ₱ 1,263 25.0 1,306 25.0
Term Loans [Member] | Others Two | U.S. Dollar Debts [Member] | Loan agreement date December 7, 2015 [Member] | Costs [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   100.0    
Date of Loan Agreement December 7, 2015      
Lender(s) Mizuho Bank Ltd.      
Installments Terms 13 equal semi-annual installments commencing on the date which falls 12 months after the loan date, with final installment on December 7, 2022      
Dates Drawn Various dates in 2016      
Drawn Amount | $   100.0    
Paid in full on —      
Outstanding Amounts ₱ 2,324 46.0 3,198 61.0
Term Loans [Member] | Others Two | U.S. Dollar Debts [Member] | Loan agreement date March 4, 2020 [Member] | Costs [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   140.0    
Date of Loan Agreement March 4, 2020      
Lender(s) PNB      
Installments Terms Quarterly amortization rates equivalent to: (a) 2.5% of the total amount drawn payable on the first interest payment date up to the 28th interest payment date; (b) 5% of the total amount drawn payable on the 29th interest payment date up to the 32nd interest payment date; and (3) 2.5% of the total amount drawn payable on the 37th interest payment date up to maturity.      
Dates Drawn —      
Paid in full on —      
Term Loans [Member] | Others Two | U.S. Dollar Debts [Member] | Loan agreement date March 22, 2016 [Member] | Costs [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   25.0    
Date of Loan Agreement March 22, 2016      
Lender(s) NTT Finance Corporation      
Installments Terms Non-amortizing, payable upon maturity on March 30, 2023      
Dates Drawn March 30, 2016      
Drawn Amount | $   25.0    
Paid in full on —      
Outstanding Amounts ₱ 1,265 25.0 1,307 $ 25.0
Term Loans [Member] | Unsecured Term Loan [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement March 26, 2014      
Lender(s) Union Bank      
Dates Drawn March 28, 2014      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,900   1,920  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the sixth-year commencing on the first-year anniversary of the initial drawdown and the balance payable upon maturity on March 29, 2021      
Term Loans [Member] | Unsecured Term Loan [Member] | March Twenty Two Thousand Twelve | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement March 20, 2012      
Lender(s) RCBC      
Dates Drawn April 12, 2012      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,940   1,960  
Terms Annual amortization rate of 1% on the fifth-year up to the ninth-year from the initial drawdown date and the balance payable upon maturity on April 12, 2022      
Term Loans [Member] | Unsecured Term Loan [Member] | August Thirty One Two Thousand Twelve | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 200      
Date of Loan Agreement August 31, 2012      
Lender(s) Manufacturers Life Insurance Co. (Phils.), Inc.      
Dates Drawn October 9, 2012      
Drawn Amount ₱ 200      
Paid in full on April 10, 2019      
Outstanding Amounts     200  
Terms Payable in full upon maturity on October 9, 2019      
Term Loans [Member] | Unsecured Term Loan [Member] | September Three Two Thousand Twelve | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,000      
Date of Loan Agreement September 3, 2012      
Lender(s) Union Bank of the Philippines, or Union Bank      
Dates Drawn January 11, 2013      
Drawn Amount ₱ 1,000      
Paid in full on January 13, 2020      
Outstanding Amounts ₱ 940   950  
Terms Annual amortization rate of 1% on the first-year up to the sixth-year from the initial drawdown date and the balance payable upon maturity on January 13, 2020      
Term Loans [Member] | Unsecured Term Loan [Member] | October Eleven Two Thousand Twelve | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,000      
Date of Loan Agreement October 11, 2012      
Lender(s) Philippine American Life and General Insurance Company, or Philam Life      
Dates Drawn December 3, 2012      
Drawn Amount ₱ 1,000      
Paid in full on —      
Outstanding Amounts ₱ 1,000   1,000  
Terms Payable in full upon maturity on December 5, 2022      
Term Loans [Member] | Unsecured Term Loan [Member] | December Seventeen Two Thousand Twelve | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement December 17, 2012      
Lender(s) LBP      
Dates Drawn Various dates in 2012-2013      
Drawn Amount ₱ 3,000      
Paid in full on December 20, 2019      
Outstanding Amounts     2,820  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the sixth-year commencing on the first-year anniversary of the initial drawdown and the balance payable upon maturity on December 20, 2019      
Term Loans [Member] | Unsecured Term Loan [Member] | November Thirteen Two Thousand Thirteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement November 13, 2013      
Lender(s) Bank of the Philippine Islands, or BPI      
Dates Drawn Various dates in 2013-2014      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,880   1,900  
Terms Annual amortization rate of 1% on the first-year up to the sixth-year from the initial drawdown and the balance payable upon maturity on November 22, 2020      
Term Loans [Member] | Unsecured Term Loan [Member] | November Twenty Five Two Thousand Thirteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement November 25, 2013      
Lender(s) Metrobank      
Dates Drawn November 29, 2013      
Drawn Amount ₱ 3,000      
Paid in full on —      
Outstanding Amounts ₱ 1,199   1,497  
Terms Annual amortization rate of 10% of the total amount drawn for six-years and the final installment is payable upon maturity on November 27, 2020      
Term Loans [Member] | Unsecured Term Loan [Member] | December Three Two Thousand Thirteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement December 3, 2013      
Lender(s) BPI      
Dates Drawn December 10, 2013      
Drawn Amount ₱ 3,000      
Paid in full on —      
Outstanding Amounts ₱ 2,818   2,846  
Terms Annual amortization rate of 1% of the total amount drawn for the first six-years and the final installment is payable upon maturity on December 10, 2020      
Term Loans [Member] | Unsecured Term Loan [Member] | January Twenty Nine Two Thousand Fourteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement January 29, 2014      
Lender(s) LBP      
Dates Drawn February 5, 2014      
Drawn Amount ₱ 3,000      
Paid in full on —      
Outstanding Amounts ₱ 2,847   2,875  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the sixth-year commencing on the first-year anniversary of the initial drawdown and the balance payable upon maturity on February 5, 2021      
Term Loans [Member] | Unsecured Term Loan [Member] | February Three Two Thousand Fourteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 500      
Date of Loan Agreement February 3, 2014      
Lender(s) LBP      
Dates Drawn February 7, 2014      
Drawn Amount ₱ 500      
Paid in full on —      
Outstanding Amounts ₱ 475   480  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the sixth-year commencing on the first-year anniversary of the initial drawdown and the balance payable upon maturity on February 5, 2021      
Term Loans [Member] | Unsecured Term Loan [Member] | April Two Two Thousand Fourteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,500      
Date of Loan Agreement April 2, 2014      
Lender(s) Philam Life      
Dates Drawn April 4, 2014      
Drawn Amount ₱ 1,500      
Paid in full on —      
Outstanding Amounts ₱ 1,500   1,500  
Terms Payable in full upon maturity on April 4, 2024      
Term Loans [Member] | Unsecured Term Loan [Member] | April Two Two Thousand Fourteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 500      
Date of Loan Agreement April 2, 2014      
Lender(s) BDO      
Dates Drawn April 4, 2014      
Drawn Amount ₱ 500      
Paid in full on —      
Outstanding Amounts ₱ 475   480  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the sixth-year commencing on the first-year anniversary of the initial drawdown and the balance payable upon maturity on April 2, 2021      
Term Loans [Member] | Unsecured Term Loan [Member] | May Twenty Three Two Thousand Fourteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,000      
Date of Loan Agreement May 23, 2014      
Lender(s) Philam Life      
Dates Drawn May 28, 2014      
Drawn Amount ₱ 1,000      
Paid in full on —      
Outstanding Amounts ₱ 1,000   1,000  
Terms Payable in full upon maturity on May 28, 2024      
Term Loans [Member] | Unsecured Term Loan [Member] | June Nine Two Thousand Fourteen        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,000      
Date of Loan Agreement June 9, 2014      
Lender(s) LBP      
Dates Drawn June 13, 2014      
Drawn Amount ₱ 1,000      
Paid in full on —      
Outstanding Amounts ₱ 950   960  
Terms Annual amortization rate of 1% on the first-year up to the ninth-year from initial drawdown date and the balance payable upon maturity on June 13, 2024      
Term Loans [Member] | Unsecured Term Loan [Member] | July Twenty Eight Two Thousand Fourteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,500      
Date of Loan Agreement July 28, 2014      
Lender(s) Union Bank      
Dates Drawn July 31, 2014      
Drawn Amount ₱ 1,500      
Paid in full on —      
Outstanding Amounts ₱ 1,425   1,440  
Terms Annual amortization rate of 1% on the first-year up to the ninth-year from initial drawdown date and the balance payable upon maturity on July 31, 2024      
Term Loans [Member] | Unsecured Term Loan [Member] | February Twenty Five Two Thousand Fifteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement February 25, 2015      
Lender(s) BPI      
Dates Drawn March 24, 2015      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,920   1,940  
Terms Annual amortization rate of 1% on the first-year up to the ninth-year from initial drawdown date and the balance payable upon maturity on March 24, 2025      
Term Loans [Member] | Unsecured Term Loan [Member] | June Twenty Six Two Thousand Fifteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement June 26, 2015      
Lender(s) BPI      
Dates Drawn June 30, 2015      
Drawn Amount ₱ 3,000      
Paid in full on —      
Outstanding Amounts ₱ 2,880   2,910  
Terms Annual amortization rate of 1% on the first-year up to the ninth-year from initial drawdown date and the balance payable upon maturity on June 30, 2025      
Term Loans [Member] | Unsecured Term Loan [Member] | August Three Two Thousand Fifteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 5,000      
Date of Loan Agreement August 3, 2015      
Lender(s) Metrobank      
Dates Drawn Various dates in 2015      
Drawn Amount ₱ 5,000      
Paid in full on —      
Outstanding Amounts ₱ 4,800   4,850  
Terms Annual amortization rate of 1% on the first-year up to the ninth-year from initial drawdown date and the balance payable upon maturity on September 23, 2025      
Term Loans [Member] | Unsecured Term Loan [Member] | August Eleven Two Thousand Fifteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 5,000      
Date of Loan Agreement August 11, 2015      
Lender(s) Metrobank      
Dates Drawn September 1, 2015      
Drawn Amount ₱ 5,000      
Paid in full on —      
Outstanding Amounts ₱ 4,785   4,833  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the ninth-year commencing on the first-year anniversary of the initial drawdown date and the balance payable upon maturity on September 1, 2025      
Term Loans [Member] | Unsecured Term Loan [Member] | December Eleven Two Thousand Fifteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 5,000      
Date of Loan Agreement December 11, 2015      
Lender(s) BPI      
Dates Drawn December 21, 2015      
Drawn Amount ₱ 5,000      
Paid in full on —      
Outstanding Amounts ₱ 4,784   4,832  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the ninth-year commencing on the first-year anniversary of the initial drawdown date and the balance payable upon maturity on December 21, 2025      
Term Loans [Member] | Unsecured Term Loan [Member] | December Sixteen Two Thousand Fifteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 5,000      
Date of Loan Agreement December 16, 2015      
Lender(s) Metrobank      
Dates Drawn December 28, 2015      
Drawn Amount ₱ 5,000      
Paid in full on —      
Outstanding Amounts ₱ 4,784   4,831  
Terms Annual amortization rate of 1% of the principal amount up to the tenth-year commencing on the first-year anniversary of the initial drawdown and the balance payable upon maturity on June 29, 2026      
Term Loans [Member] | Unsecured Term Loan [Member] | December Eighteen Two Thousand Fifteen | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 7,000      
Date of Loan Agreement December 18, 2015      
Lender(s) CBC      
Dates Drawn December 28, 2015 and February 24, 2016      
Drawn Amount ₱ 7,000      
Paid in full on —      
Outstanding Amounts ₱ 5,593   6,289  
Terms Annual amortization rate of 1% of the principal amount on the third-year up to the sixth-year from the initial drawdown date, with balance payable upon maturity on December 28, 2022      
Term Loans [Member] | Unsecured Term Loan [Member] | July One Two Thousand Sixteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 6,000      
Date of Loan Agreement July 1, 2016      
Lender(s) Metrobank      
Dates Drawn August 30, 2016 and November 10, 2016      
Drawn Amount ₱ 6,000      
Paid in full on —      
Outstanding Amounts ₱ 5,804   5,859  
Terms Annual amortization rate of 1% on the first-year up to the sixth-year from initial drawdown date and the balance payable upon maturity on August 30, 2023      
Term Loans [Member] | Unsecured Term Loan [Member] | July Fourteen Two Thousand Sixteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 8,000      
Date of Loan Agreement July 14, 2016      
Lender(s) Security Bank      
Dates Drawn February 27, 2017      
Drawn Amount ₱ 8,000      
Paid in full on —      
Outstanding Amounts ₱ 7,651   7,807  
Terms Annual amortization rate of 1% of the total amount drawn payable semi-annually starting from the end of the first-year after the initial drawdown date until the ninth-year and the balance payable on maturity on March 1, 2027      
Term Loans [Member] | Unsecured Term Loan [Member] | September Twenty Two Thousand Sixteen | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 6,500      
Date of Loan Agreement September 20, 2016      
Lender(s) BPI      
Dates Drawn November 2, 2016 and December 19, 2016      
Drawn Amount ₱ 6,500      
Paid in full on —      
Outstanding Amounts ₱ 6,286   6,346  
Terms Annual amortization rate of 1% on the first- year up to the sixth-year from initial drawdown date and the balance payable upon maturity on November 2, 2023      
Term Loans [Member] | Others Three [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts ₱ 6,959   10,327  
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date September 28,2016 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement September 28, 2016      
Lender(s) BDO      
Dates Drawn October 5, 2016      
Drawn Amount ₱ 3,000      
Paid in full on —      
Outstanding Amounts ₱ 2,910   2,940  
Terms Annual amortization rate of 1% of the principal amount on the first-year up to the ninth-year commencing on the first-year anniversary of the initial drawdown date and the balance payable upon maturity on October 5, 2026      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date October 14,2016 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 5,300      
Date of Loan Agreement October 14, 2016      
Lender(s) BPI      
Dates Drawn December 19, 2016      
Drawn Amount ₱ 5,300      
Paid in full on —      
Outstanding Amounts ₱ 5,125   5,175  
Terms Annual amortization rate of 1% on the first-year up to the sixth-year from initial drawdown date and the balance payable upon maturity on December 19, 2023      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date October 27,2016 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,500      
Date of Loan Agreement October 27, 2016      
Lender(s) CBC      
Dates Drawn December 8, 2016      
Drawn Amount ₱ 2,500      
Paid in full on —      
Outstanding Amounts ₱ 2,250   2,500  
Terms Annual amortization rate of 10% of the amount drawn starting on the third-year up to the sixth-year, with balance payable upon maturity on December 8, 2023      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date October 28,2016 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 4,000      
Date of Loan Agreement October 28, 2016      
Lender(s) Security Bank      
Dates Drawn April 5, 2017      
Drawn Amount ₱ 4,000      
Paid in full on —      
Outstanding Amounts ₱ 1,935   1,953  
Terms Semi-annual amortization rate of 1% of the total amount drawn from first-year up to the ninth-year and the balance payable upon maturity on April 5, 2027      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date December 16,2016 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,000      
Date of Loan Agreement December 16, 2016      
Lender(s) PNB      
Dates Drawn December 7, 2017      
Drawn Amount ₱ 1,000      
Paid in full on —      
Outstanding Amounts ₱ 980   990  
Terms Annual amortization rate of 1% of the amount drawn starting on the first anniversary of the advance up to the ninth anniversary of the advance and the balance payable upon maturity on December 7, 2027      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date December 22,2016 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement December 22, 2016      
Lender(s) LBP      
Dates Drawn January 22, 2018      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,980   2,000  
Terms Annual amortization rate of 1% of the amount drawn starting on the first anniversary of the advance up to the ninth anniversary of the advance and the balance payable upon maturity on January 21, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date December 23,2016 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,500      
Date of Loan Agreement December 23, 2016      
Lender(s) LBP      
Dates Drawn April 5, 2017      
Drawn Amount ₱ 3,500      
Paid in full on —      
Outstanding Amounts ₱ 3,417   3,450  
Terms Annual amortization rate of 1% on the first- year up to the ninth-year after the drawdown date and the balance payable upon maturity on April 5, 2027      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date April 18,2017 [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement April 11, 2019      
Lender(s) Bank of China Limited, Manila Branch      
Dates Drawn September 6, 2019      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,985      
Terms Annual amortization rate equivalent to 1% of the amount of loan payable on the first-year anniversary up to the sixth-year anniversary of the initial drawdown date and the balance payable upon maturity on September 7, 2026      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date April 18,2017 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,500      
Date of Loan Agreement April 18, 2017      
Lender(s) PNB      
Dates Drawn January 3, 2018      
Drawn Amount ₱ 1,500      
Paid in full on —      
Outstanding Amounts ₱ 1,485   1,500  
Terms Annual amortization rate of 1% of the amount drawn starting on the first anniversary of the advance up to the sixth- year anniversary of the advance and the balance payable upon maturity on January 3, 2025      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date May 24, 2017 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement May 24, 2017      
Lender(s) Security Bank      
Dates Drawn May 29, 2017      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,950   1,970  
Terms Semi-annual amortization rate of Php10 million starting on October 5, 2017 and every six months thereafter with the balance payable upon maturity on April 5, 2027      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date July 5, 2017 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,500      
Date of Loan Agreement July 5, 2017      
Lender(s) LBP      
Dates Drawn July 10, 2017      
Drawn Amount ₱ 3,500      
Paid in full on —      
Outstanding Amounts ₱ 3,430   3,465  
Terms Annual amortization rate of 1% on the first- year up to the ninth-year after the drawdown date and the balance payable upon maturity on July 12, 2027      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date August 29, 2017 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,500      
Date of Loan Agreement August 29, 2017      
Lender(s) LBP      
Dates Drawn April 2, 2018      
Drawn Amount ₱ 1,500      
Paid in full on —      
Outstanding Amounts ₱ 1,485   1,500  
Terms Annual amortization rate equivalent to 1% of the total loan payable on the first-year up to the ninth-year after the drawdown date and the balance payable upon maturity on April 3, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date September 28, 2017 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,000      
Date of Loan Agreement September 28, 2017      
Lender(s) Union Bank      
Dates Drawn February 19, 2018      
Drawn Amount ₱ 1,000      
Paid in full on —      
Outstanding Amounts ₱ 990   1,000  
Terms Annual amortization rate of 1% of the amount drawn starting on the first-year anniversary of the advance up to the ninth- year anniversary of the advance and the balance payable upon maturity on February 21, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date April 19, 2017 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement April 19, 2018      
Lender(s) LBP      
Dates Drawn April 25, 2018      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,980   2,000  
Terms Annual amortization rate equivalent to 1% of the total loan payable on the first-year up to the ninth-year after the drawdown date and the balance payable upon maturity on April 25, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date April 20,2018 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,000      
Date of Loan Agreement April 20, 2018      
Lender(s) LBP      
Dates Drawn May 3, 2018      
Drawn Amount ₱ 1,000      
Paid in full on —      
Outstanding Amounts ₱ 990   1,000  
Terms Annual amortization rate equivalent to 1% of the total loan payable on the first-year up to the ninth-year after the drawdown date and the balance payable upon maturity on May 3, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date May 9,2018 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement May 9, 2018      
Lender(s) BPI      
Dates Drawn May 10, 2018      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,980   2,000  
Terms Annual amortization rate equivalent to 1% of the amount drawn starting on the first- year anniversary of the advance up to the ninth-year anniversary of the advance and the balance payable upon maturity on May 10, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date May 9,2018 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement May 9, 2018      
Lender(s) BPI      
Dates Drawn May 10, 2018      
Drawn Amount ₱ 3,000      
Paid in full on August 10, 2018      
Terms Annual amortization rate equivalent to 1% of the amount drawn starting on the first- year anniversary of the advance up to the ninth-year anniversary of the advance and the balance payable upon maturity on May 10, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date May 25,2018 [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement May 25, 2018      
Lender(s) BPI      
Dates Drawn May 28, 2018      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,969   1,986  
Terms Annual amortization rate equivalent to 1% of the amount drawn starting on the first- year anniversary of the advance up to the fifth-year anniversary of the advance and the balance payable upon maturity on May 28, 2024      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date June 27,2018 [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 1,500      
Date of Loan Agreement June 27, 2018      
Lender(s) Development Bank of the Philippines, or DBP      
Dates Drawn June 28, 2018      
Drawn Amount ₱ 1,500      
Paid in full on —      
Outstanding Amounts ₱ 1,500   1,500  
Terms Annual amortization rate equivalent to 1% of the amount drawn starting on the third- year anniversary of the advance up to the fifth-year anniversary of the advance and the balance payable upon maturity on June 28, 2024      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date July 31,2018 [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement July 31, 2018      
Lender(s) BPI      
Dates Drawn August 10, 2018      
Drawn Amount ₱ 3,000      
Paid in full on —      
Outstanding Amounts ₱ 2,950   2,978  
Terms Annual amortization rate equivalent to 1% of the amount drawn starting on the first-year anniversary of the advance up to the ninth-year anniversary of the advance and the balance payable upon maturity on May 10, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date January 11, 2019 [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 5,000      
Date of Loan Agreement January 11, 2019      
Lender(s) DBP      
Dates Drawn May 6, 2019 September 2, 2019      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 4,978      
Terms Annual amortization rate equivalent to 1% of the amount drawn starting on the third-year anniversary of the advance up to the ninth-year anniversary of the advance and the balance payable upon maturity on May 7, 2029      
Loan Amount Drawn ₱ 3,000      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date February 18, 2019 [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 8,000      
Date of Loan Agreement February 18, 2019      
Lender(s) Union Bank      
Dates Drawn July 11, 2019 September 6, 2019 October 1, 2019 November 5, 2019      
Drawn Amount ₱ 3,000      
Paid in full on —      
Outstanding Amounts ₱ 7,978      
Terms Annual amortization rate equivalent to 1% of the amount drawn starting on the first-year anniversary up to the ninth-year anniversary of the initial drawdown date and the balance payable upon maturity on July 11, 2029      
Loan Amount Drawn ₱ 2,000      
Loan Amount Drawn 1,000      
Loan Amount Drawn 2,000      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date February 21, 2019 [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 4,000      
Date of Loan Agreement February 21, 2019      
Lender(s) PNB      
Dates Drawn March 11, 2019      
Drawn Amount ₱ 4,000      
Paid in full on —      
Outstanding Amounts ₱ 3,972      
Terms Annual amortization rate equivalent to 1% of the amount drawn starting on the first-year anniversary up to the seventh-year anniversary of the initial drawdown date and the balance payable upon maturity on March 11, 2027      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date July 1, 2019 [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,000      
Date of Loan Agreement July 1, 2019      
Lender(s) PNB      
Dates Drawn September 6, 2019      
Drawn Amount ₱ 2,000      
Paid in full on —      
Outstanding Amounts ₱ 1,985      
Terms Annual amortization rate equivalent to 1% of the total amount drawn from the facility on the first-year anniversary up to the sixth-year anniversary of the initial drawdown date and the balance payable upon maturity on September 7, 2026      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date September 25, 2019 [member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 8,000      
Date of Loan Agreement September 25, 2019      
Lender(s) CBC      
Dates Drawn October 2, 2019      
Drawn Amount ₱ 8,000      
Paid in full on —      
Outstanding Amounts ₱ 7,942      
Terms Annual amortization rate equivalent to 10% of the total amount drawn starting on the third-year anniversary up to the ninth-year anniversary of the initial drawdown date and the balance payable upon maturity on October 2, 2029      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date December 9, 2019 [Member] | Smart [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 4,000      
Date of Loan Agreement December 9, 2019      
Lender(s) DBP      
Dates Drawn December 12, 2019      
Drawn Amount ₱ 4,000      
Paid in full on —      
Outstanding Amounts ₱ 3,970      
Terms Annual amortization rate equivalent to 1% of the total amount drawn starting on the third-year anniversary up to the ninth-year anniversary of the initial drawdown date and the balance payable upon maturity on December 12, 2029      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date March 24, 2020 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 4,000      
Date of Loan Agreement March 24, 2020      
Lender(s) RCBC      
Dates Drawn March 26, 2020      
Drawn Amount ₱ 4,000      
Paid in full on —      
Terms Annual amortization rate equivalent to 1% of the advance starting on the first-year anniversary of the drawdown date and the balance payable upon maturity on March 27, 2028      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date December 12, 2019 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 4,500      
Date of Loan Agreement December 12, 2019      
Lender(s) BPI      
Dates Drawn December 15, 2019      
Drawn Amount ₱ 4,500      
Paid in full on —      
Outstanding Amounts ₱ 4,500      
Terms Annual amortization rate equivalent to 1% of the advance on the first year up to the ninth-year anniversary of the drawdown date and the balance payable upon maturity on December 18, 2029      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date March 30, 2020 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 2,500      
Date of Loan Agreement March 30, 2020      
Lender(s) MUFG Bank, Ltd.      
Dates Drawn —      
Cancelled Undrawn Amount ₱ 2,500      
Paid in full on —      
Terms Amortization rate equivalent to: (1) 20% of the amount drawn payable on the 30th, 48th, 54th and 72nd month from the drawdown date; (2) 0.50% of the amount drawn payable on the 36th, 42nd, 60th and 66th month from the drawdown date; and (3) 18% of the amount drawn payable upon maturity      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date January 20, 2020 [Member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 3,000      
Date of Loan Agreement January 20, 2020      
Lender(s) BDO      
Dates Drawn January 24, 2020      
Drawn Amount ₱ 3,000      
Paid in full on —      
Terms Annual amortization rate equivalent to 1% of the total amount drawn starting on the first-year anniversary up to the ninth-year anniversary of the drawdown date and the balance payable upon maturity on January 24, 2030      
Term Loans [Member] | Unsecured Term Loans [Member] | Loan agreement date January 29, 2020 [member] | PLDT [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount ₱ 5,000      
Date of Loan Agreement January 29, 2020      
Lender(s) BDO      
Dates Drawn January 31, 2020      
Drawn Amount ₱ 5,000      
Paid in full on —      
Terms Annual amortization rate equivalent to 1% of the total amount drawn starting on the first-year anniversary up to the ninth-year anniversary of the drawdown date and the balance payable upon maturity on January 31, 2030      
Term Loans [Member] | Others Four [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts ₱ 25,311   25,789  
Term Loans [Member] | Others Five [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts 12,805   12,935  
Term Loans [Member] | Others Six [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts 35,259   ₱ 6,464  
Term Loans [Member] | Other seven [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Outstanding Amounts ₱ 8,470      
Term Loans [Member] | Tranche A | Others Two | U.S. Dollar Debts [Member] | February Twenty Six Two Thousand Fifteen Loan Agreement | Costs [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   150.0    
Term Loans [Member] | Tranche B | Others Two | U.S. Dollar Debts [Member] | February Twenty Six Two Thousand Fifteen Loan Agreement | Costs [Member]        
Disclosure Of Detailed Information About Borrowings [Line Items]        
Loan Amount | $   $ 50.0