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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, 2020
Dec. 31, 2019
Noncash Investing Activities [Abstract]    
Additions to lease liabilities (Note 10) ₱ 11,122 ₱ 5,065