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Financial Instruments at Fair Value Through Profit or Loss - Summary of Financial Instruments at Fair Value through Profit or Loss (Detail) $ in Millions, $ in Millions | Dec. 31, 2019 TWD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 TWD ($)
--- | --- | --- | ---
Financial assets-current |  |  |
Financial assets-current, Mandatorily measured at FVTPL | $ 1 |  | $ 0
Financial assets-noncurrent |  |  |
Financial assets held for trading, Derivatives (not designated for hedge), Forward exchange contracts | 778 |  | 517
Financial liabilities-current |  |  |
Financial liabilities held for trading, Derivatives (not designated for hedge), Forward exchange contracts | 0 | $ 0 | 1
Forward exchange contracts [Member] |  |  |
Financial assets-current |  |  |
Derivatives (not designated for hedge) | 0 |  | 0
Listed stocks domestic [Member] |  |  |
Financial assets-current |  |  |
Non-derivatives | 1 |  | 0
Non listed stocks domestic [Member] |  |  |
Financial assets-noncurrent |  |  |
Non-derivatives | 511 |  | 293
Non listed stocks foreign [Member] |  |  |
Financial assets-noncurrent |  |  |
Non-derivatives | $ 267 |  | $ 224

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- Definition The amount of current derivative financial assets. [Refer: Derivative financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 + Details
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