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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 02, 2016 | Oct. 02, 2016 | Sep. 27, 2015
Tax benefit | $ 47 | $ 335 |
Net Cash Provided by (Used in) Operating Activities |  | 12,114 | $ 14,484
Net Cash Provided by (Used in) Financing Activities |  | (5,087) | (7,842)
New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2016-09, Statutory Tax Withholding Component |  |  |
Net Cash Provided by (Used in) Operating Activities |  | 264 | 287
Net Cash Provided by (Used in) Financing Activities |  | $ (264) | $ (287)

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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3574-108585 + Details
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