| (22) | Components of Other Comprehensive Income (Loss) |
| For the year ended December 31, 2015 | ||||||||||||||||||||
| Arising during the period |
Reclassification adjustments during the period |
Other comprehensive income (loss), before tax |
Income tax effect |
Other comprehensive income (loss), net of tax |
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| NT$ | NT$ | NT$ | NT$ | NT$ | ||||||||||||||||
| (In Thousands) | (In Thousands) | (In Thousands) | (In Thousands) | (In Thousands) | ||||||||||||||||
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Items that will not be reclassified subsequently to profit or loss: |
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Remeasurements of defined benefit pension plans |
$ | (40,200 | ) | $ | — | $ | (40,200 | ) | $ | 6,809 | $ | (33,391 | ) | |||||||
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Share of remeasurements of defined benefit plans of associates and joint ventures |
(1,831 | ) | — | (1,831 | ) | — | (1,831 | ) | ||||||||||||
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Items that may be reclassified subsequently to profit or loss: |
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Exchange differences on translation of foreign operations |
2,784,800 | — | 2,784,800 | (21,026 | ) | 2,763,774 | ||||||||||||||
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Unrealized gain (loss) on available-for-sale financial assets |
(2,843,916 | ) | (916,291 | ) | (3,760,207 | ) | 281,203 | (3,479,004 | ) | |||||||||||
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Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss |
(276,994 | ) | 677 | (276,317 | ) | (37,850 | ) | (314,167 | ) | |||||||||||
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Total other comprehensive income (loss) |
$ | (378,141 | ) | $ | (915,614 | ) | $ | (1,293,755 | ) | $ | 229,136 | $ | (1,064,619 | ) | ||||||
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| For the year ended December 31, 2016 | ||||||||||||||||||||
| Arising during the period |
Reclassification adjustments during the period |
Other comprehensive income (loss), before tax |
Income tax effect |
Other comprehensive income (loss), net of tax |
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| NT$ | NT$ | NT$ | NT$ | NT$ | ||||||||||||||||
| (In Thousands) | (In Thousands) | (In Thousands) | (In Thousands) | (In Thousands) | ||||||||||||||||
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Items that will not be reclassified subsequently to profit or loss: |
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Remeasurements of defined benefit pension plans |
$ | (75,893 | ) | $ | — | $ | (75,893 | ) | $ | 12,899 | $ | (62,994 | ) | |||||||
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Share of remeasurements of defined benefit plans of associates and joint ventures |
2,459 | — | 2,459 | — | 2,459 | |||||||||||||||
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Items that may be reclassified subsequently to profit or loss: |
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Exchange differences on translation of foreign operations |
(1,815,947 | ) | — | (1,815,947 | ) | (620 | ) | (1,816,567 | ) | |||||||||||
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Unrealized gain (loss) on available-for-sale financial assets |
(287,866 | ) | (1,681,770 | ) | (1,969,636 | ) | 95,705 | (1,873,931 | ) | |||||||||||
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Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss |
(331,615 | ) | — | (331,615 | ) | 58,577 | (273,038 | ) | ||||||||||||
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Total other comprehensive income (loss) |
$ | (2,508,862 | ) | $ | (1,681,770 | ) | $ | (4,190,632 | ) | $ | 166,561 | $ | (4,024,071 | ) | ||||||
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| For the year ended December 31, 2017 | ||||||||||||||||||||
| Arising during the period |
Reclassification adjustments during the period |
Other comprehensive income (loss), before tax |
Income tax effect |
Other comprehensive income (loss), net of tax |
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| NT$ | NT$ | NT$ | NT$ | NT$ | ||||||||||||||||
| (In Thousands) | (In Thousands) | (In Thousands) | (In Thousands) | (In Thousands) | ||||||||||||||||
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Items that will not be reclassified subsequently to profit or loss: |
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Remeasurements of defined benefit pension plans |
$ | (184,186 | ) | $ | — | $ | (184,186 | ) | $ | 31,311 | $ | (152,875 | ) | |||||||
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Share of remeasurements of defined benefit plans of associates and joint ventures |
1,221 | — | 1,221 | — | 1,221 | |||||||||||||||
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Items that may be reclassified subsequently to profit or loss: |
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Exchange differences on translation of foreign operations |
(5,975,203 | ) | — | (5,975,203 | ) | 59,838 | (5,915,365 | ) | ||||||||||||
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Unrealized gain (loss) on available-for-sale financial assets |
1,224,344 | (642,905 | ) | 581,439 | 100,059 | 681,498 | ||||||||||||||
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Share of other comprehensive income (loss) of associates and joint ventures which may be reclassified subsequently to profit or loss |
604,675 | 102,302 | 706,977 | (135,989 | ) | 570,988 | ||||||||||||||
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Total other comprehensive income (loss) |
$ | (4,329,149 | ) | $ | (540,603 | ) | $ | (4,869,752 | ) | $ | 55,219 | $ | (4,814,533 | ) | ||||||
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