Profit Before Income Tax - Summary of Other Gains and Losses (Detail) $ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2023
TWD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
TWD ($)
|
Dec. 31, 2021
TWD ($)
|
|
| Analysis of income and expense [abstract] | ||||
| Net gain on financial assets mandatorily at FVTPL | $ 6,155,995 | $ 201,045 | $ 10,244,928 | $ 1,199,065 |
| Net loss arising on financial instruments held for trading | (4,295,484) | (140,284) | (6,137,183) | (2,689,070) |
| Gain on disposal of subsidiaries (Note 30) | 529,721 | 17,300 | 0 | 17,340,418 |
| Foreign exchange gains (losses), net | 998,111 | 32,597 | (2,459,474) | 1,395,054 |
| Gain recognized in bargain purchase transaction (Note 29) | 33,114 | |||
| Impairment loss on investments accounted for using the equity method (Note 14) | 0 | 0 | (61,206) | |
| Gain (loss) on disposal of investments accounted for using the equity method | 55,795 | 1,822 | 80,317 | (67,482) |
| Other gains and losses | $ 3,444,138 | $ 112,480 | $ 1,667,382 | $ 17,211,099 |