XML 166 R152.htm IDEA: XBRL DOCUMENT v3.25.1
Provisions - Movements in Provisions (Detail) - TWD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of other provisions [Line Items]      
Beginning balance $ 822 $ 399 $ 427
Additional/(reversal of) provisions recognized 231 440 58
Used / forfeited during the year (76) (67) (86)
Reclassification   50  
Effect of foreign exchange differences 0 0 0
Ending balance 977 822 399
Employee benefits [Member]      
Disclosure of other provisions [Line Items]      
Beginning balance 387 65 63
Additional/(reversal of) provisions recognized 34 323 2
Used / forfeited during the year (5) (1) 0
Reclassification   0  
Effect of foreign exchange differences 0 0 0
Ending balance 416 387 65
Warranties [Member]      
Disclosure of other provisions [Line Items]      
Beginning balance 238 235 213
Additional/(reversal of) provisions recognized 114 69 108
Used / forfeited during the year (71) (66) (86)
Reclassification   0  
Effect of foreign exchange differences 0 0 0
Ending balance 281 238 235
Onerous Contracts [Member]      
Disclosure of other provisions [Line Items]      
Beginning balance 194 95 147
Additional/(reversal of) provisions recognized 72 49 (52)
Used / forfeited during the year 0 0 0
Reclassification   50  
Effect of foreign exchange differences 0 0 0
Ending balance 266 194 95
Others [Member]      
Disclosure of other provisions [Line Items]      
Beginning balance 3 4 4
Additional/(reversal of) provisions recognized 11 (1) 0
Used / forfeited during the year 0 0 0
Reclassification   0  
Effect of foreign exchange differences 0 0 0
Ending balance $ 14 $ 3 $ 4