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Long-Term Investments (Tables) | 12 Months Ended
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Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract] |
Long-Term Investments |
|  | December 31, 2017 |  |  | December 31, 2016 |
Equity-method investments |  |  | 45 |  |  |  | 45 |
Cost-method investments |  |  | 12 |  |  |  | 12 |
Total |  |  | 57 |  |  |  | 57 |
Schedule of Equity-method Investments | Equity-method investments as at December 31, 2017 and December 31, 2016 were as follows:
|  | December 31, 2017 |  |  | December 31, 2016 |
| Carrying value |  |  | Ownership percentage |  |  | Carrying value |  |  | Ownership percentage |
ST-Ericsson SA, in liquidation |  |  | 45 |  |  |  | 50.0 | % |  |  | 45 |  |  |  | 50.0 | %
Total |  |  | 45 |  |  |  |  |  |  |  | 45 |  |  |  |  |

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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- Definition Tabular disclosure of the summary of investment holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010 + Details
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