Movements of the allowance for doubtful receivables
| Individually Assessed for Impairment |
Collectively Assessed for Impairment |
Total | ||||||||||
| NT$ | NT$ | NT$ | ||||||||||
| (In Millions) | (In Millions) | (In Millions) | ||||||||||
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Balance at January 1, 2015 |
$ | 8.1 | $ | 478.6 | $ | 486.7 | ||||||
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Provision |
28.6 | 4.8 | 33.4 | |||||||||
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Reversal/Write-off |
(29.1 | ) | (4.7 | ) | (33.8 | ) | ||||||
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Effect of acquisition of subsidiary |
1.8 | — | 1.8 | |||||||||
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Effect of exchange rate changes |
0.8 | (0.7 | ) | 0.1 | ||||||||
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Balance at December 31, 2015 |
$ | 10.2 | $ | 478.0 | $ | 488.2 | ||||||
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| Individually Assessed for Impairment |
Collectively Assessed for Impairment |
Total | ||||||||||
| NT$ | NT$ | NT$ | ||||||||||
| (In Millions) | (In Millions) | (In Millions) | ||||||||||
|
Balance at January 1, 2016 |
$ | 10.2 | $ | 478.0 | $ | 488.2 | ||||||
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Provision |
— | 0.3 | 0.3 | |||||||||
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Reversal/Write-off |
(8.4 | ) | — | (8.4 | ) | |||||||
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Balance at December 31, 2016 |
$ | 1.8 | $ | 478.3 | $ | 480.1 | ||||||
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Balance at January 1, 2017 |
$ | 1.8 | $ | 478.3 | $ | 480.1 | ||||||
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Reversal/Write-off |
(1.8 | ) | (6.3 | ) | (8.1 | ) | ||||||
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Effect of exchange rate changes |
— | (0.2 | ) | (0.2 | ) | |||||||
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Balance at December 31, 2017 |
$ | — | $ | 471.8 | $ | 471.8 | ||||||
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