Finance Costs - Summary of Finance Costs (Detail) $ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2023
TWD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
TWD ($)
|
Dec. 31, 2021
TWD ($)
|
|
| Disclosure of detailed information about borrowings [line items] | ||||
| Interest expense, Corporate bonds | $ 17,848.9 | $ 14,116.1 | $ 5,203.0 | |
| Lease liabilities | 382.0 | 267.1 | 193.3 | |
| Interest expense, Bank loans | 95.4 | 32.0 | 17.6 | |
| Interest expense, Others | 2.8 | 1.7 | 0.3 | |
| Less: Capitalized interest under property, plant and equipment | (6,329.7) | (2,666.9) | 0.0 | |
| Finance costs | $ 11,999.4 | $ 391.9 | $ 11,750.0 | $ 5,414.2 |
| Bottom of range [member] | ||||
| Disclosure of detailed information about borrowings [line items] | ||||
| Capitalisation rate | 1.08% | 1.08% | 0.56% | |
| Top of range [member] | ||||
| Disclosure of detailed information about borrowings [line items] | ||||
| Capitalisation rate | 3.36% | 3.36% | 3.36% | |