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Trade Receivables, Net - Summary of Trade Receivables, Net (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2021 TWD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 TWD ($)
--- | --- | --- | ---
Disclosure of financial assets [Line Items] |  |  |
Trade receivables | $ 109,369,478 | $ 3,942,673 | $ 91,207,576
At FVTOCI | 6,092,462 | 219,627 | 626,413
Total trade receivable | 115,462,210 | 4,162,300 | 91,833,989
Cost [member] |  |  |
Disclosure of financial assets [Line Items] |  |  |
Trade receivables | 109,473,101 | 3,946,399 | 91,304,934
Allowance for doubtful debts [member] |  |  |
Disclosure of financial assets [Line Items] |  |  |
Trade receivables | $ 103,353 | $ 3,726 | $ 97,358

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- Definition The amount of non-current trade receivables. [Refer: Trade receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_b&doctype=Standard -URIDate 2021-03-24 + Details
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