v3.26.1
Summary of Material Accounting Policies - Additional Information (Detail)
$ in Millions
 12 Months Ended
Dec. 16, 2025
PHP (₱)
Sep. 01, 2025
PHP (₱)
Apr. 16, 2025
PHP (₱)
Apr. 05, 2025
Apr. 02, 2025
PHP (₱)
shares
Sep. 30, 2024
PHP (₱)
Sep. 27, 2024
PHP (₱)
May 06, 2024
PHP (₱)
shares
Apr. 05, 2024
PHP (₱)
shares
Apr. 05, 2024
USD ($)
shares
Jan. 12, 2024
Jan. 05, 2024
PHP (₱)
shares
Dec. 31, 2025
PHP (₱)
Segment
shares
Dec. 31, 2024
PHP (₱)
shares
Dec. 31, 2023
PHP (₱)
Feb. 28, 2018
PHP (₱)
Disclosure Of Significant Accounting Policies [Line Items]                                
Satventures'/Cignal TV's equity                         ₱ 52,425,000,000 ₱ 52,764,000,000    
Carrying value of investments in joint ventures                         33,274,000,000 ₱ 33,783,000,000    
ECL recognized on investment                         ₱ 0      
Description of debt investment security credit risk                         debt instrument to have low credit risk when its credit risk rating is equivalent to the globally understood definition of ‘investment grade’, or when the exposure is less than 30 days past due.      
Number of shares issued | shares                         1,093,000,000 1,093,000,000    
Carrying value of investments in associates                         ₱ 19,151,000,000 ₱ 18,981,000,000   ₱ 1,664,000,000
Equity interest paid                         186,000,000 3,770,000,000 ₱ 1,636,000,000  
Impairment loss                         0      
PLDT Capital [Member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Issued and paid up share capital               ₱ 891,000,000                
Ordinary shares | shares               26,773,606                
Issued and paid up ordinary shares               ₱ 1,000,000                
Ordinary shares fully paid | shares               30,058                
Smart and DMPI [Member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Consideration paid (received)                         ₱ 88,387,000,000      
PLDT Communications and Energy Ventures, Inc. [Member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Consideration paid (received)                 ₱ 857,000,000 $ 15.3            
PLDT Communications and Energy Ventures, Inc. [Member] | Warrants [member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Issuance of convertible preferred shares | $                   $ 152.0            
Warrant received | shares                 2,700,000 2,700,000            
PLDT Communications and Energy Ventures, Inc. [Member] | Bottom of range [member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Percentage of investment in associates                 36.97% 36.97%            
PLDT Communications and Energy Ventures, Inc. [Member] | Top of range [member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Percentage of investment in associates                 37.66% 37.66%            
MIH [Member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Shares subscribed | shares                 6,700,000 6,700,000            
PLDT and Subsidiaries [Member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Number of business segments | Segment                         3      
Multisys [Member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Number of common stock shares sold | shares                       227        
Purchase of shares | shares         228                      
Number of shares owned | shares         2,308                      
Percentage of ownership       50.74%             45.73%          
Percentage of equity interest         5.01%             4.99%        
Amendment agreement description                         PGIH retained ownership of 2,080 common shares representing 45.73% equity interest in Multisys. Pursuant to the Restated Shareholders’ and related Amendment Agreement signed on January 30, 2024 and March 1, 2024, respectively, PGIH remains entitled to nominate three out of the five directors in Multisys, who manage and control the operations of Multisys. Consequently, the results of operation and financial position of Multisys continue to be consolidated with the PLDT Group.      
Equity interest paid ₱ 94,600,000   ₱ 150,000,000   ₱ 257,500,000             ₱ 270,000,000        
Purchase of interests in equity investments payable                         ₱ 12,900,000      
Number of common shares ownership retained | shares                       2,080        
Kayana [Member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Percentage of equity interest   45.00%       45.00% 60.00%                  
Carrying value of investments in associates                         ₱ 1,355,000,000 ₱ 853,000,000    
Equity interest paid   ₱ 594,000,000       ₱ 46,500,000 ₱ 840,000,000                  
Kayana [Member] | Remaining Shareholders [Member]                                
Disclosure Of Significant Accounting Policies [Line Items]                                
Equity interest paid           ₱ 523,500,000