| 7. | CASH AND CASH EQUIVALENTS |
| December 31, 2016 |
December 31, 2017 |
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| NT$ | NT$ | |||||||
| (In Millions) | (In Millions) | |||||||
|
Cash and deposits in banks |
$ | 536,895.3 | $ | 551,919.8 | ||||
|
Agency bonds |
— | 776.0 | ||||||
|
Commercial paper |
1,997.2 | 695.9 | ||||||
|
Repurchase agreements collateralized by corporate bonds |
2,361.3 | — | ||||||
|
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|
|
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| $ | 541,253.8 | $ | 553,391.7 | |||||
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Deposits in banks consisted of highly liquid time deposits that were readily convertible to known amounts of cash and were subject to an insignificant risk of changes in value.