Amounts recognized in respect of these defined benefit plans were as follows:
| Years Ended December 31 | ||||||||||||
| 2015 | 2016 | 2017 | ||||||||||
| NT$ | NT$ | NT$ | ||||||||||
| (In Millions) | (In Millions) | (In Millions) | ||||||||||
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Current service cost |
$ | 134.5 | $ | 132.8 | $ | 145.0 | ||||||
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Net interest expense |
144.4 | 139.4 | 126.5 | |||||||||
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Components of defined benefit costs recognized in profit or loss |
278.9 | 272.2 | 271.5 | |||||||||
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Remeasurement on the net defined benefit liability: |
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Return on plan assets (excluding amounts included in net interest expense) |
(13.7 | ) | 45.7 | 29.3 | ||||||||
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Actuarial loss arising from experience adjustments |
297.1 | 38.2 | 483.9 | |||||||||
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Actuarial loss (gain) arising from changes in financial assumptions |
544.3 | 694.6 | (258.5 | ) | ||||||||
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Actuarial loss arising from changes in demographic assumptions |
— | 278.7 | — | |||||||||
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Components of defined benefit costs recognized in other comprehensive income |
827.7 | 1,057.2 | 254.7 | |||||||||
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Total |
$ | 1,106.6 | $ | 1,329.4 | $ | 526.2 | ||||||
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