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Leases - Additional Information (Details) - PHP (₱)
₱ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Noncash Investing Activities [Abstract]      
Cash outflow for leases ₱ 5,781 ₱ 5,399  
Non-cash additions to ROU assets 9,335 5,072  
non-cash additions to lease liabilities ₱ 11,122 5,065  
Lease term 5 years    
Rental income relating to investment properties ₱ 51 ₱ 49 ₱ 67