XML 163 R145.htm IDEA: XBRL DOCUMENT v3.22.1
Equity - Summary of Exchange Differences on Translating Foreign Operations (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
TWD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
TWD ($)
Dec. 31, 2019
TWD ($)
Balance at January 1 $ 231,737,116   $ 212,802,312  
Exchange differences arising on translating foreign operations (4,094,565) $ (147,605) (831,784) $ (5,202,145)
Share from associates and joint venture accounted for using the equity method 29,209 1,053 131,009 (85,975)
Balance at December 31 268,171,060 9,667,306 231,737,116 212,802,312
Exchange differences on translating foreign operations [member]        
Balance at January 1 (11,641,939) (419,681) (10,762,684) (5,888,574)
Exchange differences arising on translating foreign operations (3,203,730) (115,491) (1,173,204) (4,788,135)
Share from associates and joint venture accounted for using the equity method 21,307 768 101,038 (85,975)
Disposal of associates and joint venture accounted for using the equity method     29,971  
Disposal of foreign operations (569,284) (20,522) 162,940  
Balance at December 31 $ (15,393,646) $ (554,926) $ (11,641,939) $ (10,762,684)