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Pension and Other Employee Benefits - Summary of Expected Future Settlements of Defined Contribution Plans (Detail) - PHP (₱) ₱ in Millions | Dec. 31, 2019 | Jan. 01, 2019
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Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 |  | ₱ 4,994
Less than 1 year [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | ₱ 644 |
2021 [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 362 |
2022 [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 377 |
2023 [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 620 |
2024 [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 1,011 |
More than five years [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 128,008 |
Defined Contribution Plans [member] | Less than 1 year [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 523 |
Defined Contribution Plans [member] | 2021 [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 101 |
Defined Contribution Plans [member] | 2022 [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 100 |
Defined Contribution Plans [member] | 2023 [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 113 |
Defined Contribution Plans [member] | 2024 [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | 153 |
Defined Contribution Plans [member] | More than five years [Member] |  |
Disclosure Of Fair Value Of Plan Assets [Line Items] |  |
Add: Payments in optional extension periods not recognized as at December 31, 2018 | ₱ 1,295 |

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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 57 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_57_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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