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Additional Information of Expenses by Nature (Tables)
 12 Months Ended
Dec. 31, 2020
Text Block [Abstract]  
Summary of Additional Information of Expenses by Nature
 
 
  
Years Ended December 31
 
 
  
2018
 
  
2019
 
  
2020
 
 
  
NT$
 
  
NT$
 
  
NT$
 
 
  
(In Millions)
 
  
(In Millions)
 
  
(In Millions)
 
a.   Depreciation of property, plant and equipment and
right-of-use
assets
  
 
                        
 
  
 
                        
 
  
 
                        
 
    
Recognized in cost of revenue
  
$
264,804.7
 
  
$
256,530.9
 
  
$
299,311.4
 
Recognized in operating expenses
  
 
23,292.3
 
  
 
24,856.7
 
  
 
25,191.3
 
Recognized in other operating income and expenses
  
 
27.9
 
  
 
24.2
 
  
 
35.7
 
 
  
 
 
 
  
 
 
 
  
 
 
 
    
 
  
$
288,124.9
 
  
$
281,411.8
 
  
$
324,538.4
 
 
  
 
 
 
  
 
 
 
  
 
 
 
b.  Amortization of intangible assets
  
   
  
   
  
   
    
Recognized in cost of revenue
  
$
2,073.5
 
  
$
3,069.9
 
  
$
4,837.7
 
Recognized in operating expenses
  
 
2,347.9
 
  
 
2,402.5
 
  
 
2,348.5
 
 
  
 
 
 
  
 
 
 
  
 
 
 
    
 
  
$
4,421.4
 
  
$
5,472.4
 
  
$
7,186.2
 
 
  
 
 
 
  
 
 
 
  
 
 
 
c.   Employee benefits expenses
  
   
  
   
  
   
    
Post-employment benefits
  
   
  
   
  
   
Defined contribution plans
  
$
2,568.9
 
  
$
2,609.7
 
  
$
2,809.5
 
Defined benefit plans
  
 
281.8
 
  
 
259.6
 
  
 
204.9
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
 
2,850.7
 
  
 
2,869.3
 
  
 
3,014.4
 
Other employee benefits
  
 
105,364.2
 
  
 
107,115.3
 
  
 
137,803.0
 
 
  
 
 
 
  
 
 
 
  
 
 
 
 
  
$
108,214.9
 
  
$
109,984.6
 
  
$
140,817.4
 
 
  
 
 
 
  
 
 
 
  
 
 
 
    
Employee benefits expense summarized by function
  
   
  
   
  
   
Recognized in cost of revenue
  
$
63,597.7
 
  
$
64,702.0
 
  
$
83,099.0
 
Recognized in operating expenses
  
 
44,617.2
 
  
 
45,282.6
 
  
 
57,718.4
 
 
  
 
 
 
  
 
 
 
  
 
 
 
    
 
  
$
108,214.9
 
  
$
109,984.6
 
  
$
140,817.4
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Summary of Accrued Profit Sharing Bonus to Employees Accrued profit sharing bonus to employees is illustrated below:
 
Summary of Profit Sharing Bonus to Employees and Compensation to Directors