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Investments in Associates and Joint Ventures - Summary of Sale of Beacon's Meralco Shares to MPIC (Detail) - PHP (₱)
₱ / shares in Units, ₱ in Millions
Jul. 31, 2018
Dec. 18, 2017
Jun. 13, 2017
May 30, 2016
Apr. 14, 2015
Jun. 24, 2014
Disclosure Of Joint Ventures [Abstract]            
Number of Shares Sold         112,710,000 56,350,000
% of Meralco Shareholdings Sold         10.00% 5.00%
Price Per Share         ₱ 235.00 ₱ 235.00
Total Price ₱ 1,152 ₱ 1,294 ₱ 21,800 ₱ 26,200 ₱ 26,487 ₱ 13,243
Deferred Gain Realized     ₱ 4,962 ₱ 4,962 ₱ 2,838 ₱ 1,418