The amounts arising from the defined benefit obligation of the Company were as follows:
| December 31, 2016 |
December 31, 2017 |
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| NT$ | NT$ | |||||||
| (In Millions) | (In Millions) | |||||||
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Present value of defined benefit obligation |
$ | 12,480.5 | $ | 12,774.6 | ||||
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Fair value of plan assets |
(3,929.1 | ) | (3,923.9 | ) | ||||
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Net defined benefit liability |
$ | 8,551.4 | $ | 8,850.7 | ||||
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