XML 63 R93.htm IDEA: XBRL DOCUMENT v3.20.1
Trade Receivables, Net - Summary of Trade Receivables, Net (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2019
TWD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
TWD ($)
Disclosure of financial assets [Line Items]      
Trade receivables $ 78,948,473 $ 2,639,534 $ 79,481,359
At FVTOCI 2,029,690 67,860  
Total trade receivable 78,948,473 2,639,534 79,481,359
Cost [member]      
Disclosure of financial assets [Line Items]      
Trade receivables 77,055,280 2,576,238 79,636,748
Allowance for doubtful debts [member]      
Disclosure of financial assets [Line Items]      
Trade receivables $ 136,497 $ 4,564 $ 155,389