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Summary of Significant Accounting Policies - Additional Information (Detail) ₱ / shares in Units, shares in Millions |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |
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Mar. 16, 2023 PHP (₱) | Aug. 12, 2022 | Jul. 29, 2022 PHP (₱) shares | Apr. 07, 2022 USD ($) | Feb. 28, 2022 PHP (₱) Seat | Mar. 01, 2021 | Jan. 29, 2021 PHP (₱) | Jun. 03, 2019 PHP (₱) | Nov. 08, 2018 PHP (₱) | Jun. 13, 2017 PHP (₱) | May 30, 2016 PHP (₱) | Aug. 31, 2022 PHP (₱) | Dec. 31, 2022 PHP (₱) Segment shares | Dec. 31, 2021 PHP (₱) | Dec. 31, 2020 PHP (₱) | Dec. 31, 2011 PHP (₱) | Dec. 31, 2022 USD ($) | Apr. 11, 2022 PHP (₱) | Apr. 11, 2022 USD ($) | Mar. 22, 2022 ₱ / shares | Mar. 22, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 03, 2018 PHP (₱)
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration paid (received) |  |  | ₱ 100,000,000 |  |  |  |  |  |  | ₱ 21,800,000,000 | ₱ 26,200,000,000 | ₱ 136,000,000 |  |  |  |  |  |  |  |  |  |  |
Remaining balance outstanding |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 12,000,000 |  |  |  |  |  |  |  |  |  |
Total expenses related to Covid-19 measures |  |  |  |  |  |  |  |  |  |  |  |  | 450,000,000 | ₱ 942,000,000 | ₱ 903,000,000 |  |  |  |  |  |  |  |
Sales/purchase agreement on transfer of prepaid home wifi or phw subscribers |  |  |  |  |  |  | ₱ 748,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of equity interest acquired |  |  |  |  |  |  |  |  |  |  |  |  | 51,546,000,000 | 53,364,000,000 | 52,123,000,000 |  |  |  |  |  |  |  |
Carrying value of investments in joint ventures |  |  |  |  |  |  |  |  |  |  |  |  | 33,624,000,000 | 36,158,000,000 |  |  |  |  |  |  |  |  |
ECL recognized on investment |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 0 |  |  |  |  |  |  |  |  |  |
Description of debt investment security credit risk |  |  |  |  |  |  |  |  |  |  |  |  | debt instrument to have low credit risk when its credit risk rating is equivalent to the globally understood definition of ‘investment grade’, or when the exposure is less than 30 days past due. |  |  |  |  |  |  |  |  |  |
Transaction price allocated to remaining performance obligations |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 47,049,000,000 | 38,595,000,000 |  |  |  |  |  |  |  |  |
Lease of low-value assets recognition exemption to leases that are considered of low value |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 | 1,000,000 | 2,000,000 |  |  |  |  |  |  |  |
Equity interest paid |  |  | 248,000,000 |  |  |  |  |  |  |  |  |  | 3,514,000,000 | ₱ 1,754,000,000 | 579,000,000 |  |  |  |  |  |  |  |
Financial assets at fair value through other comprehensive income | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  | $ 0 |
Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease of low-value assets recognition exemption to leases that are considered of low value |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 250,000 |  |  |  |  |  |  |  |  |  |
Less than 1 year [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining performance obligations percentage |  |  |  |  |  |  |  |  |  |  |  |  | 55.00% | 62.00% |  |  | 55.00% |  |  |  |  | 62.00% |
1-2 years [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining performance obligations percentage |  |  |  |  |  |  |  |  |  |  |  |  | 45.00% | 38.00% |  |  | 45.00% |  |  |  |  | 38.00% |
PHW Subscribers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notice period to subscribers |  |  |  |  |  | 30 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial purchase price |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 1,455,000,000 |  |  |  |  |  |  |  |  |  |
Sun Trademark [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization |  |  |  |  |  |  |  |  |  |  |  |  | 0 | ₱ 2,628,000,000 | 1,877,000,000 |  |  |  |  |  |  |  |
Digital Telecommunications Phils., Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 4,505,000,000 |  |  |  |  |  |  |
Sky Cable Corporation [Member] | Sale and Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of issued and outstanding capital stock acquired | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest paid | ₱ 6,750,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PLDT [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rent concessions as effect of Covid-19 pandemic |  |  |  |  |  |  |  |  |  |  |  |  | 288,000 | 3,000,000 | 15,000,000 |  |  |  |  |  |  |  |
Smart and DMPI [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration paid (received) |  |  |  |  |  |  |  |  |  |  |  |  | 60,492,000,000 |  |  |  |  |  |  |  |  |  |
Rent concessions as effect of Covid-19 pandemic |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | ₱ 122,000,000 |  |  |  |  |  |  |  |
Smart and PLDT [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final purchase price amount plus value-added tax |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 1,336,000,000 |  |  |  |  |  |  |  |  |  |
Pacific Global One Aviation Company, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of equity interest acquired |  |  |  |  | ₱ 44,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of board seats | Seat |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on deconsolidation |  |  |  |  | ₱ 376,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pacific Global One Aviation Company, Inc. [Member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership |  | 36.82% |  | 38.45% | 47.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pacific Global One Aviation Company, Inc. [Member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration paid (received) |  |  |  |  | ₱ 44,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership |  | 36.63% |  | 36.82% | 65.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PLDT Communications and Energy Ventures, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of investments in joint ventures | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000 |  |
Subscribed per share | ₱ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 13,000 |  |  |
Remitted amount as deposit of future subscription |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ₱ 1,031,000,000 | $ 20,000,000 |  |  |  |
VIH [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of investments in joint ventures | $ |  |  |  | $ 62,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional funds raised for investments in joint ventures | $ |  |  |  | 210,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in joint ventures propelling valuation | $ |  |  |  | $ 1,400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PLDT and Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of business segments | Segment |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |
Multisys [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration paid (received) |  |  | ₱ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of investments in joint ventures |  |  |  |  |  |  |  |  | ₱ 2,150,000,000 |  |  |  |  | ₱ 2,521,000,000 |  |  |  |  |  |  |  |  | ₱ 550,000,000
Shares subscribed | shares |  |  | 227 |  |  |  |  |  |  |  |  |  | 2,307 |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  | 4.99% |  |  |  |  |  | 45.73% |  |  |  | 50.72% |  |  |  |  |  |  |  |  |  |
Equity interest paid |  |  |  |  |  |  |  | ₱ 27,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The amount of the transaction price allocated to the performance obligations that are unsatisfied (or partially unsatisfied) as of the end of the reporting period. The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties (for example, some sales taxes). [Refer: Performance obligations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2022-03-24 -Paragraph 120 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2022-en-r&anchor=para_120_a&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Expenses related to Covid-19 measures. + References No definition available. + Details
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- Definition Final purchase price amount plus value-added tax. + References No definition available. + Details
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- Definition Gain on deconsolidation. + References No definition available. + Details
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- Definition Initial purchase price for transfer of subscribers together with counterparty inventories and unearned revenues. + References No definition available. + Details
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- Definition Investments in joint ventures propelling valuation. + References No definition available. + Details
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- Definition Number of board seats. + References No definition available. + Details
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- Definition Number of business segments. + References No definition available. + Details
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- Definition Payment for acquisition. + References No definition available. + Details
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- Definition The pecentage of equity interest to be transferred. + References No definition available. + Details
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- Definition Remitted amount as deposit of future subscription. + References No definition available. + Details
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