XML 156 R135.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Income Tax Expense - Major Components of Income Tax Expense (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Dec. 31, 2021
TWD ($)
Current income tax:        
Current income tax on profits for the period $ 426,878   $ 771,378 $ 1,109,752
Income tax on unappropriated retained earnings 85,607   159,744 227,467
Prior year income tax overestimation (182,778)   (255,935) (184,284)
Total current income tax 329,707   675,187 1,152,935
Deferred income tax:        
Relating to origination and reversal of temporary differences (29,046)   (87,012) (54,617)
Income tax expense $ 300,661 $ 9,819 $ 588,175 $ 1,098,318