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Net Revenue (Tables) | 12 Months Ended
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Dec. 31, 2018
Text block [abstract] |
Summary of Disaggregation of Revenue from Contracts with Customers |
| a. | Disaggregation of revenue from contracts with customers
Product |  | Year Ended December 31, 2018 |
|  | NT$ (In Millions) |
Wafer |  | $ | 911,296.4 |
Others |  |  | 120,177.2 |
|  | $ | 1,031,473.6 |
Geography |  | Year Ended December 31, 2018 |
|  | NT$ (In Millions) |
Taiwan |  | $ | 78,260.8 |
United States |  |  | 632,821.5 |
China |  |  | 175,794.2 |
Europe, the Middle East and Africa |  |  | 71,068.5 |
Japan |  |  | 58,125.9 |
Others |  |  | 15,402.7 |
|  | $ | 1,031,473.6 |
The Company categorized the net revenue mainly based on the countries where the customers are headquartered.
Application Type |  | Year Ended December 31, 2018 |
|  | NT$ (In Millions) |
Communication |  | $ | 578,923.7 |
Industrial/Standard |  |  | 234,153.4 |
Computer |  |  | 144,614.1 |
Consumer |  |  | 73,782.4 |
|  | $ | 1,031,473.6 |
Resolution |  | Year Ended December 31, 2018 |
|  | NT$ (In Millions) |
7-nanometer |  | $ | 81,680.7 |
10-nanometer |  |  | 96,989.5 |
16/20-nanometer |  |  | 210,989.0 |
28-nanometer |  |  | 178,440.4 |
40/45-nanometer |  |  | 101,801.0 |
65-nanometer |  |  | 76,122.3 |
90-nanometer |  |  | 36,652.1 |
0.11/0.13 micron |  |  | 20,677.7 |
0.15/0.18 micron |  |  | 81,182.6 |
0.25 micron and above |  |  | 26,761.1 |
Wafer revenue |  | $ | 911,296.4 |
Summary of Contract Balances |
| b. | Contract balances
|  | January 1, 2018 |  |  | December 31, 2018 |
|  | NT$ (In Millions) |  |  | NT$ (In Millions) |
Contract liabilities (classified under accrued expenses and other current liabilities) |  | $ | 32,434.8 |  |  | $ | 4,684.0 |

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- Definition The disclosure of the disaggregation of revenue from contracts with customers. [Refer: Revenue from contracts with customers] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 114 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_114&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The explanation of the significant changes in the contract assets and the contract liabilities. [Refer: Contract assets; Contract liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2018-01-01 -Paragraph 118 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_118&doctype=Standard -URIDate 2018-03-16 + Details
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