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Fair Value Measurements - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions | Oct. 01, 2017 | Jan. 01, 2017 | Oct. 02, 2016 | Jan. 03, 2016
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Available-for-sale Securities [Abstract] |  |  |  |
Available-for-sale Securities - Estimated Fair Value | $ 3,044 | $ 12,087 |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 15,721 | 18,972 | $ 18,205 | $ 13,732
Marketable securities | 510 | $ 22,935 |  |
Held-to-maturity Securities |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 13,141 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 13,141 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 12,826 |  |  |
Marketable securities | 315 |  |  |
Held-to-maturity Securities | Cash |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 2,813 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 2,813 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 2,813 |  |  |
Held-to-maturity Securities | U.S. Gov't Securities(1) |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 0 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents |  |  |  |
Marketable securities |  |  |  |
Held-to-maturity Securities | Other Sovereign Securities(1) |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 1,109 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 1,109 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 799 |  |  |
Marketable securities | 310 |  |  |
Held-to-maturity Securities | U.S. Reverse repurchase agreements |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 4,602 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 4,602 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 4,602 |  |  |
Marketable securities |  |  |  |
Held-to-maturity Securities | Other Reverse repurchase agreements |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 491 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 491 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 491 |  |  |
Held-to-maturity Securities | Corporate debt securities(1) |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 1,957 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 1,957 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 1,952 |  |  |
Marketable securities | 5 |  |  |
Held-to-maturity Securities | Money market funds |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 1,078 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 1,078 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 1,078 |  |  |
Held-to-maturity Securities | Time deposits(1) |  |  |  |
Held-to-maturity Securities [Abstract] |  |  |  |
Held-to-maturity Securities - Carrying Amount | 1,091 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  |  |
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 |  |  |
Held-to-maturity Securities - Estimated Fair Value | 1,091 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 1,091 |  |  |
Available-for-sale Securities |  |  |  |
Available-for-sale Securities [Abstract] |  |  |  |
Available-for-sale Securities - Carrying Amount | 3,050 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 40 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 |  |  |
Available-for-sale Securities - Estimated Fair Value | 3,090 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 2,895 |  |  |
Marketable securities | 195 |  |  |
Available-for-sale Securities | U.S. Gov't Securities(1) |  |  |  |
Available-for-sale Securities [Abstract] |  |  |  |
Available-for-sale Securities - Carrying Amount | 2,906 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 0 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 |  |  |
Available-for-sale Securities - Estimated Fair Value | 2,906 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 2,876 |  |  |
Marketable securities | 30 |  |  |
Available-for-sale Securities | Other Sovereign Securities(1) |  |  |  |
Available-for-sale Securities [Abstract] |  |  |  |
Available-for-sale Securities - Carrying Amount | 9 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 0 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 |  |  |
Available-for-sale Securities - Estimated Fair Value | 9 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 0 |  |  |
Marketable securities | 9 |  |  |
Available-for-sale Securities | Corporate debt securities(1) |  |  |  |
Available-for-sale Securities [Abstract] |  |  |  |
Available-for-sale Securities - Carrying Amount | 129 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 0 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 0 |  |  |
Available-for-sale Securities - Estimated Fair Value | 129 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 19 |  |  |
Marketable securities | 110 |  |  |
Available-for-sale Securities | Equity investments |  |  |  |
Available-for-sale Securities [Abstract] |  |  |  |
Available-for-sale Securities - Carrying Amount | 6 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 40 |  |  |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  |
Available-for-sale Securities - Estimated Fair Value | 46 |  |  |
Available-for-sale Securities and Held-to-maturity Securities [Abstract] |  |  |  |
Cash and Cash Equivalents | 0 |  |  |
Marketable securities | $ 46 |  |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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