v3.24.1
Financial Instruments - Summary of Fair Value of Financial Instruments that are Measured at Fair Value on a Recurring Basis (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL $ 6,628,690 $ 216,482 $ 8,934,151
Unsecured subordinate corporate bonds 1,042,906 34,060 1,059,712
Trade receivables, net 5,637,485 184,111 5,402,714
Financial assets at FVTOCI 7,301,222 238,446 6,944,985
Financial liabilities at FVTPL 1,302,342 42,532 626,760
Swap contracts [member] | Derivative financial instruments [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 1,453,868 47,481 3,205,828
Financial liabilities at FVTPL 1,183,469 38,650 543,547
Forward exchange contracts [member] | Derivative financial instruments [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 161,924 5,288 246,710
Financial liabilities at FVTPL 118,873 3,882 83,213
Quoted ordinary shares [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets at FVTOCI, Investments in equity instruments     45,683
Quoted ordinary shares [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 2,099,844 68,577 2,521,964
Open-end mutual funds [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 307,669 10,048 293,385
Unquoted preferred shares [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets at FVTOCI, Investments in equity instruments 13,303 434 13,883
Unquoted preferred shares [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 747,960 24,427 628,156
Private-placement funds [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 1,796,015 58,655 1,599,932
Unquoted ordinary shares [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets at FVTOCI, Investments in equity instruments 607,528 19,841 419,491
Contingent considerations [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 0 0 438,176
Limited partnership [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets at FVTOCI, Investments in equity instruments     3,502
Hybrid financial assets Convertible notes [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 61,410 2,006  
Level 1 of fair value hierarchy [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 2,407,513 78,625 2,815,349
Financial assets at FVTOCI 0   45,683
Level 1 of fair value hierarchy [member] | Quoted ordinary shares [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets at FVTOCI, Investments in equity instruments     45,683
Level 1 of fair value hierarchy [member] | Quoted ordinary shares [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 2,099,844 68,577 2,521,964
Level 1 of fair value hierarchy [member] | Open-end mutual funds [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 307,669 10,048 293,385
Level 2 of fair value hierarchy [Member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 1,615,792 52,769 3,452,538
Financial liabilities at FVTPL 1,302,342 42,532 626,760
Level 2 of fair value hierarchy [Member] | Swap contracts [member] | Derivative financial instruments [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 1,453,868 47,481 3,205,828
Financial liabilities at FVTPL 1,183,469 38,650 543,547
Level 2 of fair value hierarchy [Member] | Forward exchange contracts [member] | Derivative financial instruments [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 161,924 5,288 246,710
Financial liabilities at FVTPL 118,873 3,882 83,213
Level 3 of fair value hierarchy [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 2,605,385 85,088 2,666,264
Unsecured subordinate corporate bonds 1,042,906 34,060 1,059,712
Trade receivables, net 5,637,485 184,111 5,402,714
Financial assets at FVTOCI 7,301,222 238,446 6,899,302
Level 3 of fair value hierarchy [member] | Unquoted preferred shares [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets at FVTOCI, Investments in equity instruments 13,303 434 13,883
Level 3 of fair value hierarchy [member] | Unquoted preferred shares [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 747,960 24,427 628,156
Level 3 of fair value hierarchy [member] | Private-placement funds [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL 1,796,015 58,655 1,599,932
Level 3 of fair value hierarchy [member] | Unquoted ordinary shares [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets at FVTOCI, Investments in equity instruments 607,528 19,841 419,491
Level 3 of fair value hierarchy [member] | Contingent considerations [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL     438,176
Level 3 of fair value hierarchy [member] | Limited partnership [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets at FVTOCI, Investments in equity instruments     $ 3,502
Level 3 of fair value hierarchy [member] | Hybrid financial assets Convertible notes [member] | Non derivative financial assets [member]      
Disclosure of detailed information about financial instruments [line items]      
Financial assets mandatorily classified as at FVTPL $ 61,410 $ 2,006