v3.26.1
Financial Assets and Liabilities - Summary of Maximum Exposure to Credit Risk of Financial Assets Subject to Impairment (Detail) - PHP (₱)
₱ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Less allowance ₱ 19,167 ₱ 17,475
Carrying amount 47,568 46,111
Costs [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 66,735 63,586
High Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 26,108 25,729
Standard Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 9,129 5,926
Substandard Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 12,331 14,456
Default [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 19,167 17,475
Stage 1 12-Month ECL [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Less allowance 270 279
Carrying amount 16,201 14,499
Stage 1 12-Month ECL [Member] | Costs [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 16,471 14,778
Stage 1 12-Month ECL [Member] | High Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 14,980 14,059
Stage 1 12-Month ECL [Member] | Standard Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 1,215 440
Stage 1 12-Month ECL [Member] | Substandard Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 6  
Stage 1 12-Month ECL [Member] | Default [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 270 279
Stage 2 Lifetime ECL [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Less allowance 3,767 3,596
Carrying amount 31,367 31,612
Stage 2 Lifetime ECL [Member] | Costs [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 35,134 35,208
Stage 2 Lifetime ECL [Member] | High Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 11,128 11,670
Stage 2 Lifetime ECL [Member] | Standard Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 7,914 5,486
Stage 2 Lifetime ECL [Member] | Substandard Grade [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 12,325 14,456
Stage 2 Lifetime ECL [Member] | Default [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 3,767 3,596
Stage 3 Lifetime ECL [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Less allowance 15,130 13,600
Stage 3 Lifetime ECL [Member] | Costs [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure 15,130 13,600
Stage 3 Lifetime ECL [Member] | Default [Member]    
Disclosure Of Reconciliation Of Changes In Loss Allowance And Explanation Of Changes In Gross Carrying Amount For Financial Instruments [Line Items]    
Credit exposure ₱ 15,130 ₱ 13,600