Business Combinations - Summary of Goodwill Recognized on Acquisitions (Detail) - Dec. 31, 2025 $ in Thousands, $ in Thousands |
TWD ($) |
USD ($) |
|---|---|---|
| HIRSCHMANN [member] | ||
| Disclosure of detailed information about business combination [Line Items] | ||
| Total consideration | $ 2,317,201 | |
| Less: Fair value of identifiable net assets acquired | (2,296,200) | |
| Goodwill (gain on bargain purchase) recognized on acquisition | 21,001 | |
| ASEPCAYMAN [Member] | ||
| Disclosure of detailed information about business combination [Line Items] | ||
| Total consideration | 1,096,373 | |
| Less: Fair value of identifiable net assets acquired | (1,173,088) | |
| Goodwill (gain on bargain purchase) recognized on acquisition | (76,715) | |
| CHE [Member] | ||
| Disclosure of detailed information about business combination [Line Items] | ||
| Total consideration | 1,945,678 | |
| Less: Fair value of identifiable net assets acquired | $ (1,945,678) | |
| Goodwill (gain on bargain purchase) recognized on acquisition | $ 0 |