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Income and Expenses - Summary of Revenue from Contracts with Customers (Detail) - PHP (₱) ₱ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | ₱ 169,187 | ₱ 162,914
Service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 161,355 | 152,369
Non-service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 7,832 | 10,545
Transferred over Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 161,355 | 152,369
Transferred at a Point Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 7,832 | 10,545
Inter-segment [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | (17,125) | (13,375)
Inter-segment [Member] | Service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | (17,125) | (13,374)
Inter-segment [Member] | Non-service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers |  | (1)
Inter-segment [Member] | Transferred over Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | (17,125) | (13,374)
Inter-segment [Member] | Transferred at a Point Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers |  | (1)
Wireless [Member] | Operating Segments [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 96,906 | 89,929
Wireless [Member] | Operating Segments [Member] | Service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 90,661 | 83,001
Wireless [Member] | Operating Segments [Member] | Non-service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 6,245 | 6,928
Wireless [Member] | Operating Segments [Member] | Transferred over Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 90,661 | 83,001
Wireless [Member] | Operating Segments [Member] | Transferred at a Point Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 6,245 | 6,928
Fixed Line [Member] | Operating Segments [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 89,406 | 85,222
Fixed Line [Member] | Operating Segments [Member] | Service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 87,819 | 81,648
Fixed Line [Member] | Operating Segments [Member] | Non-service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 1,587 | 3,574
Fixed Line [Member] | Operating Segments [Member] | Transferred over Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | 87,819 | 81,648
Fixed Line [Member] | Operating Segments [Member] | Transferred at a Point Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers | ₱ 1,587 | 3,574
Others [Member] | Operating Segments [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers |  | 1,138
Others [Member] | Operating Segments [Member] | Service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers |  | 1,094
Others [Member] | Operating Segments [Member] | Non-service Revenue [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers |  | 44
Others [Member] | Operating Segments [Member] | Transferred over Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers |  | 1,094
Others [Member] | Operating Segments [Member] | Transferred at a Point Time [Member] |  |
Disclosure Of Disaggregation Of Revenue From Contracts With Customers [Line Items] |  |
Total revenue from contracts with customers |  | ₱ 44

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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2019-01-01 -Paragraph 113 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2019-en-r&anchor=para_113_a&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2019-01-01 -Paragraph 114 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2019-en-r&anchor=para_114&doctype=Standard -URIDate 2019-03-27 + Details
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