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Pension and Other Employee Benefits - Summary of Expected Future Settlements of Defined Benefit Pension Plans (Detail) ₱ in Millions	Dec. 31, 2020 PHP (₱)
Less than 1 year [Member]
Disclosure Of Defined Benefit Plans [Line Items]
Expected future settlements by Plan of maturing defined benefit obligation	₱ 3,570
2022 [Member]
Disclosure Of Defined Benefit Plans [Line Items]
Expected future settlements by Plan of maturing defined benefit obligation	295
2023 [Member]
Disclosure Of Defined Benefit Plans [Line Items]
Expected future settlements by Plan of maturing defined benefit obligation	433
2024 [Member]
Disclosure Of Defined Benefit Plans [Line Items]
Expected future settlements by Plan of maturing defined benefit obligation	695
2025 [Member]
Disclosure Of Defined Benefit Plans [Line Items]
Expected future settlements by Plan of maturing defined benefit obligation	882
More than 5 years [Member]
Disclosure Of Defined Benefit Plans [Line Items]
Expected future settlements by Plan of maturing defined benefit obligation	₱ 125,132

X

- 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 2020-01-01
-Paragraph 57
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_57_a&doctype=Standard
-URIDate 2020-01-01

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- 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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Namespace Prefix:	ifrs-full_
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X

- Details

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X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
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Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember
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X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember
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X

- Details

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- Details

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