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Net Revenue - Summary of Disaggregation of Revenue from Contracts with Customers by Geographical Location (Detail) - TWD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue from contracts with customers	$ 2,894,307.7	$ 2,161,735.8	$ 2,263,891.3
Taiwan [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue from contracts with customers	270,413.5	149,777.4	210,470.8
United States [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue from contracts with customers	1,992,280.4	1,408,841.9	1,493,328.8
China [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue from contracts with customers	331,673.3	267,154.1	245,168.8
Japan [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue from contracts with customers	144,239.9	132,072.0	119,099.3
Europe, the Middle East and Africa [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue from contracts with customers	102,760.9	117,348.2	123,767.1
Others [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue from contracts with customers	$ 52,939.7	$ 86,542.2	$ 72,056.5

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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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

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