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Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) $ in Millions, $ in Millions	Dec. 31, 2022 TWD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 TWD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 TWD ($)	Dec. 31, 2019 TWD ($)
Cash
Cash on hand	$ 472		$ 440
Bank deposits	10,423		15,647
Cash	10,895		16,087
Cash equivalents (with maturities of less than three months)
Commercial papers	19,592		13,530
Negotiable certificates of deposit	15,500		7,500
Time deposits	4,206		2,657
Stimulus Vouchers	0		5
Cash equivalents	39,298		23,692
Cash and cash equivalents	$ 50,193	$ 1,633	$ 39,779	$ 1,294	$ 30,420	$ 34,050

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Negotiable certificates of deposit amount.

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Stimulus vouchers.

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Time deposits with banks that have specified date of maturity.

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The amount of cash balances held at banks.

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The amount of cash on hand and demand deposits. [Refer: Cash on hand]

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The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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The amount of cash held by the entity. This does not include demand deposits.

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A classification of cash equivalents representing short-term investments. [Refer: Cash equivalents]

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