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Provisions (Tables)
 12 Months Ended
Dec. 31, 2017
Provisions [Abstract]  
Summary of Provisions

 

 

December 31

 

 

 

2016

 

 

2017

 

 

 

NT$

 

 

NT$

 

 

 

(In Millions)

 

Warranties

 

$

111

 

 

$

132

 

Trade-in right

 

 

31

 

 

 

87

 

Employee benefits

 

 

38

 

 

 

43

 

Others

 

 

5

 

 

 

5

 

 

 

$

185

 

 

$

267

 

 

 

 

 

 

 

 

 

 

Current

 

$

119

 

 

$

189

 

Noncurrent

 

 

66

 

 

 

78

 

 

 

$

185

 

 

$

267

 

 
Movements in Provisions

 

 

Warranties

 

 

Trade-in rights

 

 

Employee Benefits

 

 

Others

 

 

Total

 

 

 

NT$

 

 

NT$

 

 

NT$

 

 

NT$

 

 

NT$

 

 

 

(In Millions)

 

Balance on January 1, 2015

 

$

212

 

 

$

—

 

 

$

55

 

 

$

5

 

 

$

272

 

Additional provisions recognized

 

 

100

 

 

 

—

 

 

 

12

 

 

 

—

 

 

 

112

 

Used / forfeited during the year

 

 

(99

)

 

 

—

 

 

 

(37

)

 

 

—

 

 

 

(136

)

Balance on December 31, 2015

 

$

213

 

 

$

—

 

 

$

30

 

 

$

5

 

 

$

248

 

Balance on January 1, 2016

 

$

213

 

 

$

—

 

 

$

30

 

 

$

5

 

 

$

248

 

Additional provisions recognized

 

 

81

 

 

 

31

 

 

 

9

 

 

 

—

 

 

 

121

 

Used / forfeited during the year

 

 

(183

)

 

 

—

 

 

 

(1

)

 

 

—

 

 

 

(184

)

Balance on December 31, 2016

 

$

111

 

 

$

31

 

 

$

38

 

 

$

5

 

 

$

185

 

Balance on January 1, 2017

 

$

111

 

 

$

31

 

 

$

38

 

 

$

5

 

 

$

185

 

Additional provisions recognized

 

 

79

 

 

 

69

 

 

 

7

 

 

 

—

 

 

 

155

 

Used / forfeited during the year

 

 

(58

)

 

 

(13

)

 

 

(2

)

 

 

—

 

 

 

(73

)

Balance on December 31, 2017

 

$

132

 

 

$

87

 

 

$

43

 

 

$

5

 

 

$

267