Notes to the Statements of Cash Flows - Summary of Significant Non-cash Financing Activities and Corresponding Transaction Amounts (Detail) - PHP (₱) ₱ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Noncash Investing Activities [Abstract]
Additions to lease liabilities (Note 10)	₱ 7,314	₱ 11,122

The increase in liabilities arising from financing activities resulting from new leases. [Refer: Liabilities arising from financing activities]

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