Pension and Other Employee Benefits - Summary of Shares of Stocks of Defined Benefit Pension Plans (Detail) - PHP (₱) ₱ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure Of Fair Value Of Plan Assets [Line Items] | ||
| Shares of stocks | ₱ 2,288 | ₱ 1,983 |
| Preferred Stock [Member] | ||
| Disclosure Of Fair Value Of Plan Assets [Line Items] | ||
| Shares of stocks | 360 | 360 |
| PSE [member] | Common Stock [Member] | ||
| Disclosure Of Fair Value Of Plan Assets [Line Items] | ||
| Shares of stocks | 1,388 | 1,093 |
| Parent [Member] | Common Stock [Member] | ||
| Disclosure Of Fair Value Of Plan Assets [Line Items] | ||
| Shares of stocks | 34 | 34 |
| Others [Member] | Common Stock [Member] | ||
| Disclosure Of Fair Value Of Plan Assets [Line Items] | ||
| Shares of stocks | ₱ 506 | ₱ 496 |