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Investments in Associates and Joint Ventures - Carrying Value of PCEV's Investments in VIH (Detail) - PHP (₱)
₱ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of Investments in Associates and Joint Ventures [Line Items]      
VIH Equity ₱ 53,364 ₱ 52,123 ₱ 53,863
Goodwill arising from acquisition 61,379 61,379  
VIH [Member]      
Disclosure of Investments in Associates and Joint Ventures [Line Items]      
VIH Equity ₱ 6,398 ₱ 3,224  
PCEV's noncontrolling interests 38.45% 43.97%  
Share in net assets of VIH ₱ 2,460 ₱ 1,418  
Goodwill arising from acquisition 4,620 5,283  
Carrying amount of interest in VIH 7,080 6,701  
Minority interest's share in net losses   1  
Carrying amount of interest in VIH ₱ 7,080 ₱ 6,702