Equity - Summary of Dividends Declared (Detail) - PHP (₱) ₱ / shares in Units, ₱ in Millions |
3 Months Ended | 12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
Sep. 30, 2024 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Dec. 31, 2023 |
Sep. 30, 2023 |
Jun. 30, 2023 |
Mar. 31, 2023 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure Of Dividends [Line Items] | ||||||||||||||||
| Total Amount | ₱ 9,953 | ₱ 20,584 | ₱ 20,800 | ₱ 23,393 | ||||||||||||
| Series IV Cumulative Non-Convertible Redeemable Preferred Stock [Member] | ||||||||||||||||
| Disclosure Of Dividends [Line Items] | ||||||||||||||||
| Approved Date | Nov. 11, 2025 | Aug. 12, 2025 | May 15, 2025 | Jan. 28, 2025 | Nov. 12, 2024 | Aug. 13, 2024 | May 09, 2024 | Jan. 30, 2024 | Nov. 07, 2023 | Aug. 03, 2023 | May 04, 2023 | Jan. 31, 2023 | ||||
| Record Date | Nov. 25, 2025 | Aug. 26, 2025 | May 22, 2025 | Feb. 11, 2025 | Nov. 28, 2024 | Aug. 28, 2024 | May 24, 2024 | Feb. 14, 2024 | Nov. 22, 2023 | Aug. 19, 2023 | May 19, 2023 | Feb. 27, 2023 | ||||
| Payable Date | Dec. 15, 2025 | Sep. 15, 2025 | Jun. 15, 2025 | Mar. 15, 2025 | Dec. 15, 2024 | Sep. 15, 2024 | Jun. 15, 2024 | Mar. 15, 2024 | Dec. 15, 2023 | Sep. 15, 2023 | Jun. 15, 2023 | Mar. 15, 2023 | ||||
| Total Amount | ₱ 13 | ₱ 12 | ₱ 12 | ₱ 12 | ₱ 12 | ₱ 12 | ₱ 13 | ₱ 12 | ₱ 12 | ₱ 13 | ₱ 12 | ₱ 12 | 49 | 49 | 49 | |
| Series IV Cumulative Non-Convertible Redeemable Preferred Stock [Member] | Events After Reporting Period [member] | ||||||||||||||||
| Disclosure Of Dividends [Line Items] | ||||||||||||||||
| Approved Date | Jan. 27, 2026 | |||||||||||||||
| Record Date | Feb. 10, 2026 | |||||||||||||||
| Payable Date | Mar. 15, 2026 | |||||||||||||||
| Total Amount | ₱ 12 | |||||||||||||||
| Voting Preferred Stock [Member] | ||||||||||||||||
| Disclosure Of Dividends [Line Items] | ||||||||||||||||
| Approved Date | Dec. 02, 2025 | Aug. 12, 2025 | Jun. 10, 2025 | Mar. 20, 2025 | Dec. 03, 2024 | Aug. 13, 2024 | Jun. 11, 2024 | Mar. 21, 2024 | Dec. 05, 2023 | Aug. 29, 2023 | Jun. 13, 2023 | Mar. 02, 2023 | ||||
| Record Date | Dec. 16, 2025 | Sep. 15, 2025 | Jun. 24, 2025 | Apr. 03, 2025 | Dec. 17, 2024 | Sep. 16, 2024 | Jun. 28, 2024 | Apr. 05, 2024 | Dec. 22, 2023 | Sep. 13, 2023 | Jun. 28, 2023 | Mar. 17, 2023 | ||||
| Payable Date | Jan. 15, 2026 | Oct. 15, 2025 | Jul. 15, 2025 | Apr. 15, 2025 | Jan. 15, 2025 | Oct. 15, 2024 | Jul. 15, 2024 | Apr. 15, 2024 | Jan. 15, 2024 | Oct. 15, 2023 | Jul. 15, 2023 | Apr. 15, 2023 | ||||
| Total Amount | ₱ 2 | ₱ 3 | ₱ 3 | ₱ 2 | ₱ 3 | ₱ 2 | ₱ 3 | ₱ 2 | ₱ 2 | ₱ 2 | ₱ 3 | ₱ 3 | 10 | 10 | 10 | |
| Voting Preferred Stock [Member] | Events After Reporting Period [member] | ||||||||||||||||
| Disclosure Of Dividends [Line Items] | ||||||||||||||||
| Approved Date | Feb. 26, 2026 | |||||||||||||||
| Record Date | Apr. 02, 2026 | |||||||||||||||
| Payable Date | Apr. 15, 2026 | |||||||||||||||
| Total Amount | ₱ 2 | |||||||||||||||
| Common Stock [Member] | ||||||||||||||||
| Disclosure Of Dividends [Line Items] | ||||||||||||||||
| Approved Date | Aug. 12, 2025 | Feb. 27, 2025 | Aug. 13, 2024 | Mar. 07, 2024 | Mar. 23, 2023 | Aug. 03, 2023 | Mar. 23, 2023 | |||||||||
| Record Date | Aug. 28, 2025 | Mar. 13, 2025 | Aug. 27, 2024 | Mar. 21, 2024 | Apr. 11, 2023 | Aug. 17, 2023 | Apr. 11, 2023 | |||||||||
| Payable Date | Sep. 10, 2025 | Apr. 03, 2025 | Sep. 11, 2024 | Apr. 05, 2024 | Apr. 24, 2023 | Sep. 04, 2023 | Apr. 24, 2023 | |||||||||
| Per Share Amount | ₱ 48 | ₱ 47 | ₱ 50 | ₱ 46 | ₱ 14 | ₱ 49 | ₱ 45 | |||||||||
| Total Amount | ₱ 10,370 | ₱ 10,155 | ₱ 10,803 | ₱ 9,938 | ₱ 3,025 | ₱ 10,587 | ₱ 9,722 | ₱ 20,525 | ₱ 20,741 | ₱ 23,334 | ||||||
| Common Stock [Member] | Events After Reporting Period [member] | ||||||||||||||||
| Disclosure Of Dividends [Line Items] | ||||||||||||||||
| Approved Date | Feb. 26, 2026 | |||||||||||||||
| Record Date | Mar. 26, 2026 | |||||||||||||||
| Payable Date | Apr. 16, 2026 | |||||||||||||||
| Per Share Amount | ₱ 46 | |||||||||||||||
| Total Amount | ₱ 9,939 | |||||||||||||||