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Prepayments (Tables) | 12 Months Ended
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Dec. 31, 2017
Prepayments And Accrued Income [Abstract] |
Summary of Prepayments |
|  | December 31 |
|  | 2016 |  |  | 2017 |
|  | NT$ |  |  | NT$ |
|  | (In Millions) |
Prepaid rents |  | $ | 2,934 |  |  | $ | 2,687 |
Others |  |  | 3,285 |  |  |  | 3,074 |
|  | $ | 6,219 |  |  | $ | 5,761 |
Current |  |  |  |  |  |  |  |
Prepaid rents |  | $ | 899 |  |  | $ | 812 |
Others |  |  | 2,079 |  |  |  | 1,376 |
|  | $ | 2,978 |  |  | $ | 2,188 |
Noncurrent |  |  |  |  |  |  |  |
Prepaid rents |  | $ | 2,035 |  |  | $ | 1,875 |
Others |  |  | 1,206 |  |  |  | 1,698 |
|  | $ | 3,241 |  |  | $ | 3,573 |

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