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Related Party Transactions - Summary of Significant Transactions between the Company and Other Related Parties (Detail) $ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2023 USD ($)
Disclosure of transactions between related parties [line items] |  |  |  |
Receivables from related parties | $ 624.4 | $ 1,584.0 |  | $ 20.4
Payables to related parties | 1,566.3 | 1,642.6 |  | 51.2
Other receivables from related parties | 71.9 | 69.0 |  | $ 2.3
Global Unichip Corporation [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Receivables from related parties | 514.8 | 1,471.4 |  |
Xintec Inc. [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Receivables from related parties | 109.6 | 112.6 |  |
Payables to related parties | 1,020.2 | 1,047.4 |  |
Systems on Silicon Manufacturing Company Pte Ltd. [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Payables to related parties | 457.3 | 386.0 |  |
Other receivables from related parties | 58.1 | 68.3 |  |
Vanguard International Semiconductor Corporation [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Payables to related parties | 66.7 | 190.6 |  |
Other receivables from related parties | 13.8 | 0.7 |  |
Associates [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Net revenue from sale of goods | 13,406.0 | 15,351.5 | $ 8,475.9 |
Purchases | 4,562.2 | 6,423.9 | 7,569.8 |
Contract liabilities | 1,666.1 | 1,075.7 |  |
Manufacturing expenses | 5,043.5 | 6,011.5 | $ 5,459.9 |
Other related parties [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Payables to related parties | $ 22.1 | $ 18.6 |  |

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