Revenue from contract with customer.

No definition available.

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- Definition

The amount of amortisation for assets recognised from the costs incurred to obtain or fulfil contracts with customers. [Refer: Assets recognised from costs to obtain or fulfil contracts with customers; Amortisation expense]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2024-01-01
-Paragraph 128
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_128_b&doctype=Standard
-URIDate 2024-03-27

+ Details

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- Definition

The explanation of when the entity expects to recognise the transaction price allocated to the remaining performance obligations as revenue. [Refer: Revenue from contracts with customers; Transaction price allocated to remaining performance obligations]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2024-01-01
-Paragraph 120
-Subparagraph b
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_120_b_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

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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 [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2024-01-01
-Paragraph 120
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_120_a&doctype=Standard
-URIDate 2024-03-27

+ Details

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- Details

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Revenue - Additional Information (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 TWD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 TWD ($)	Dec. 31, 2022 TWD ($)	Dec. 31, 2027 TWD ($)	Dec. 31, 2026 TWD ($)	Dec. 31, 2025 TWD ($)
Revenue From Contract With Customer [Line Items]
Amortization of incremental costs of obtaining contracts	$ 906	$ 28	$ 856	$ 841
Telecommunications Business [Member]
Revenue From Contract With Customer [Line Items]
Transaction price allocated to performance obligations	$ 41,020
Remaining performance obligations, timing of satisfaction	The Company expects to recognize such revenue of $24,078 million, $12,627 million and $4,315 million in 2025, 2026 and 2027, respectively.	The Company expects to recognize such revenue of $24,078 million, $12,627 million and $4,315 million in 2025, 2026 and 2027, respectively.
Telecommunications Business [Member] \| Year 1 [Member] \| Forecast [Member]
Revenue From Contract With Customer [Line Items]
Transaction price allocated to performance obligations							$ 24,078
Telecommunications Business [Member] \| Later than one year and not later than two years [member] \| Forecast [Member]
Revenue From Contract With Customer [Line Items]
Transaction price allocated to performance obligations						$ 12,627
Telecommunications Business [Member] \| Later than two years and not later than three years [member] \| Forecast [Member]
Revenue From Contract With Customer [Line Items]
Transaction price allocated to performance obligations					$ 4,315
Project Business [Member]
Revenue From Contract With Customer [Line Items]
Transaction price allocated to performance obligations	$ 34,104
Remaining performance obligations, timing of satisfaction	The Company recognizes revenues when the project business contract is completed and accepted by customers. The Company expects to recognize such revenue of $12,617 million, $10,413 million and $11,074 million in 2025, 2026 and 2027, respectively.	The Company recognizes revenues when the project business contract is completed and accepted by customers. The Company expects to recognize such revenue of $12,617 million, $10,413 million and $11,074 million in 2025, 2026 and 2027, respectively.
Project Business [Member] \| Year 1 [Member] \| Forecast [Member]
Revenue From Contract With Customer [Line Items]
Transaction price allocated to performance obligations							$ 12,617
Project Business [Member] \| Later than one year and not later than two years [member] \| Forecast [Member]
Revenue From Contract With Customer [Line Items]
Transaction price allocated to performance obligations						$ 10,413
Project Business [Member] \| Later than two years and not later than three years [member] \| Forecast [Member]
Revenue From Contract With Customer [Line Items]
Transaction price allocated to performance obligations					$ 11,074