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Pension and Other Employee Benefits - Summary of Expected Future Settlements of Defined Contribution Plans (Detail)
₱ in Millions
Dec. 31, 2024
PHP (₱)
Less than 1 year [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation ₱ 229
2026 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 350
2027 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 372
2028 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 903
2029 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 834
Later than five years [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 11,947
Defined Contribution Plans [Member] | Less than 1 year [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 119
Defined Contribution Plans [Member] | 2026 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 187
Defined Contribution Plans [Member] | 2027 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 201
Defined Contribution Plans [Member] | 2028 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 275
Defined Contribution Plans [Member] | 2029 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 284
Defined Contribution Plans [Member] | Later than five years [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation ₱ 2,531