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Investments, Non-Marketable Cost Method Investments (Detail) $ in Millions, ¥ in Billions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) | Dec. 26, 2015 USD ($) | Dec. 27, 2014 USD ($) | Dec. 26, 2015 CNY (¥)
Schedule of Cost-method Investments [Line Items] |  |  |  |
Non-marketable cost method investments | $ 3,098 | $ 2,933 |  |
Impairments | 187 | 185 | $ 146 |
Cost-method Investments [Member] |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |
Impairments | 178 | 164 | $ 130 |
Cloudera, Inc. [Member] |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |
Non-marketable cost method investments | 454 | 454 |  |
Beijing UniSpreadtrum Technology Ltd [Member] |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |
Non-marketable cost method investments | 966 |  |  |
Beijing UniSpreadtrum Technology Ltd Phase One [Member] |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |
Non-marketable cost method investments | $ 966 |  |  |
Subject To Regulatory Approvals And Other Closing Conditions [Member] | Beijing UniSpreadtrum Technology Ltd [Member] |  |  |  |
Schedule of Cost-method Investments [Line Items] |  |  |  |
Non-marketable cost method investments |  | $ 1,500 |  | ¥ 9.0
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=6872867&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=29638308&loc=d3e40346-111594 + Details
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