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Financial Assets at Fair Value through Other Comprehensive Income Noncurrent (Tables)
 12 Months Ended
Dec. 31, 2020
Noncurrent Financial Assets At Fair Value Through Other Comprehensive Income [Abstract]  
Summary of Financial Assets at Fair Value through Other Comprehensive Income Noncurrent

 

 

 

December 31

 

 

 

2019

 

 

2020

 

 

 

NT$

 

 

NT$

 

 

 

(In Millions)

 

Domestic investments

 

 

 

 

 

 

 

 

Listed stocks

 

$

2,454

 

 

$

2,754

 

Non-listed stocks

 

 

4,566

 

 

 

4,325

 

Foreign investments

 

 

 

 

 

 

 

 

Non-listed stocks

 

 

134

 

 

 

114

 

 

 

$

7,154

 

 

$

7,193