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Pension and Other Employee Benefits - Summary of Expected Future Settlements of Defined Contribution Plans (Detail)
₱ in Millions
Dec. 31, 2022
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 ₱ 261
2024 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 317
2025 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 433
2026 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 826
2027 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 1,077
Later than five years [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 11,904
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 81
Defined Contribution Plans [Member] | 2024 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 143
Defined Contribution Plans [Member] | 2025 [Member]  
Disclosure Of Fair Value Of Plan Assets [Line Items]  
Expected future settlements by Plan of maturing defined benefit obligation 142
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 210
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 216
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 ₱ 2,163