Additional Information of Expenses by Nature - Summary of Additional Information of Expenses by Nature (Detail) $ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2023
TWD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
TWD ($)
|
Dec. 31, 2021
TWD ($)
|
|
| Expense by nature [line items] | ||||
| Other operating income and expenses | $ 188.7 | $ 6.2 | $ (368.4) | $ (333.4) |
| Defined contribution plans | 5,365.5 | 4,550.4 | 3,711.0 | |
| Defined benefit plans | 281.4 | 208.6 | 192.5 | |
| Share -based payments | 544.4 | 335.1 | 7.8 | |
| Depreciation of property, plant and equipment and right-of-use assets | 522,932.7 | 17,078.1 | 428,498.2 | 414,187.7 |
| Amortization of intangible assets | 9,258.2 | $ 302.4 | 8,756.1 | 8,207.2 |
| Post-employment benefits | 5,646.9 | 4,759.0 | 3,903.5 | |
| Depreciation of property, plant and equipment and right-of-use assets [member] | ||||
| Expense by nature [line items] | ||||
| Cost of revenue | 492,827.4 | 399,638.8 | 386,103.9 | |
| Operating expenses | 30,097.8 | 28,850.5 | 27,936.2 | |
| Other operating income and expenses | 7.5 | 8.9 | 147.6 | |
| Amortization of intangible assets [member] | ||||
| Expense by nature [line items] | ||||
| Cost of revenue | 6,538.1 | 6,086.3 | 5,574.3 | |
| Operating expenses | 2,720.1 | 2,669.8 | 2,632.9 | |
| Employee benefits expenses [member] | ||||
| Expense by nature [line items] | ||||
| Cost of revenue | 133,334.7 | 139,361.4 | 98,012.8 | |
| Operating expenses | 106,373.9 | 100,100.6 | 66,934.3 | |
| Defined contribution plans | 5,365.5 | 4,550.4 | 3,711.0 | |
| Defined benefit plans | 281.4 | 208.6 | 192.5 | |
| Equity-settled | 483.0 | 302.4 | 7.8 | |
| Cash-settled | 61.4 | 32.7 | 0.0 | |
| Other employee benefits | 233,517.3 | 234,367.9 | 161,035.8 | |
| Employee benefits expenses | $ 239,708.6 | $ 239,462.0 | $ 164,947.1 | |