v3.24.1
Significant Contingent Liabilities and Unrecognized Commitments - Additional Information (Detail)
$ in Thousands, $ in Thousands
 1 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Dec. 31, 2021
TWD ($)
Dec. 31, 2023
USD ($)
Disclosure of contingent liabilities [line items]            
Unused letters of credit   $ 134,000   $ 579,000   $ 4,376
Committed to purchase property, plant and equipment   56,943,589   59,675,567   1,859,686
Prepayment of property, plant and equipment   9,016,441 $ 294,462 3,689,863    
Letter of credits   645,255   622,539   21,073
Approved contribution in consideration of corporate social responsibility for environmental protection   100,000       3,266
Amount contributed related party transactions   125,000 4,082 120,000 $ 110,000  
ASE Environmental Protection And Sustainability Foundation [Member]            
Disclosure of contingent liabilities [line items]            
Amount contributed related party transactions   100,000 $ 3,266 $ 100,000 $ 100,000  
Taiwan [member]            
Disclosure of contingent liabilities [line items]            
Contractual period for environmental protection 30 years          
Contribution to be made for environmental protection   $ 3,000,000       $ 97,975