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Income Taxes - Summary of Provision for Income Tax (Detail) - PHP (₱) ₱ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Major Components Of Tax Expense Income [Abstract] |  |  |
Current | ₱ 4,452 | ₱ 3,283 | ₱ 2,467
Benefit from deferred income taxes | 3,989 | 6,267 | 1,375
Actual provision for corporate income tax | ₱ 8,441 | ₱ 9,550 | ₱ 3,842

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