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Share-based Payment Arrangement - CLPT's Summary of Compensation Costs for Stock Options (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022 TWD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 TWD ($)	Dec. 31, 2020 TWD ($)
Disclosure of terms and conditions of share-based payment arrangement [line items]
Compensation costs	$ 16.0	$ 1	$ 19.0	$ 8.0
C L P T Plan
Disclosure of terms and conditions of share-based payment arrangement [line items]
Compensation costs	1.5		0.9
C L P T Plan | Granted on February 26, 2021 [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Compensation costs	0.9		0.9
C L P T Plan | Granted on May 31, 2022 [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Compensation costs	$ 0.6		$ 0.0

X

- 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.

+ Details

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- Definition

The amount of expense from share-based payment transactions with employees. [Refer: Expense from share-based payment transactions]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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