XML 185 R158.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Financial Instruments - Summary of Level 3 Fair Value Were Equity Investments classified as Financial Assets at FVTOCI (Detail) - TWD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of fair value of investments in equity instruments designated at FVTOCI and at FVTPL      
Beginning balance $ 129,157.7    
Ending balance 161,739.5 $ 129,157.7  
Level 3 [member]      
Disclosure of fair value of investments in equity instruments designated at FVTOCI and at FVTPL      
Beginning balance 6,282.1 5,887.9 $ 4,514.9
Additions 14,887.2 715.6 319.2
Recognized in profit or loss 12.3   0.0
Recognized in other comprehensive income or loss 262.4 (373.2) 1,821.8
Disposals and proceeds from return of capital of investments (128.0) (359.5) (700.2)
Transfers out of level 3 (Note) 0.0 (139.8)  
Effect of exchange rate changes (466.4) 551.1 (67.8)
Ending balance $ 20,849.6 $ 6,282.1 $ 5,887.9