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

 

 

 

December 31

 

 

 

2016

 

 

2017

 

 

 

NT$

 

 

NT$

 

 

 

(In Millions)

 

Spare parts

 

$

1,776

 

 

$

2,059

 

Refundable deposits

 

 

2,083

 

 

 

1,860

 

Other financial assets

 

 

1,000

 

 

 

1,000

 

Others

 

 

2,288

 

 

 

2,800

 

 

 

$

7,147

 

 

$

7,719

 

Current

 

 

 

 

 

 

 

 

Spare parts

 

$

1,776

 

 

$

2,059

 

Others

 

 

346

 

 

 

124

 

 

 

$

2,122

 

 

$

2,183

 

Noncurrent

 

 

 

 

 

 

 

 

Refundable deposits

 

$

2,083

 

 

$

1,860

 

Other financial assets

 

 

1,000

 

 

 

1,000

 

Others

 

 

1,942

 

 

 

2,676

 

 

 

$

5,025

 

 

$

5,536