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Investments, Non-marketable Cost Method Investments (Details) $ in Millions, ¥ in Billions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2017 USD ($) | Oct. 01, 2016 USD ($) | Sep. 30, 2017 USD ($) | Oct. 01, 2016 USD ($) | Sep. 30, 2017 CNY (¥) | Sep. 30, 2017 USD ($) | Dec. 31, 2016 USD ($)
Schedule of Cost-method Investments [Line Items] |  |  |  |  |  |  |
Carrying Value, cost method investments |  |  |  |  |  | $ 2,719 | $ 3,098
Other than Temporary Impairment Losses, Investments | $ 10 | $ 48 | $ 613 | $ 137 |  |  |
Beijing UniSpreadtrum Technology Ltd Phase One [Member] |  |  |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |  |  |
Carrying Value, cost method investments |  |  |  |  |  | 966 |
Other than Temporary Impairment Losses, Investments |  |  | $ 147 |  |  |  |
Subject To Regulatory Approvals And Other Closing Conditions [Member] | Beijing UniSpreadtrum Technology Ltd. [Member] |  |  |  |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |  |  |  |
Carrying Value, cost method investments |  |  |  |  | ¥ 9.0 | $ 1,500 |
Cost Method Investment, Ownership Percentage |  |  |  |  | 20.00% | 20.00% |

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- Definition Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75025870&loc=d3e40691-111596 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75027002&loc=d3e40346-111594 + Details
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