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Equity (Schedule of Share Repurchases) (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2016 | Jan. 02, 2016
Class of Stock [Line Items] |  |
Payments for Repurchase of Common Stock | $ 576 | $ 387
Class A [Member] |  |
Class of Stock [Line Items] |  |
Treasury Stock, Shares, Acquired | 9.0 | 8.3
Payments for Repurchase of Common Stock | $ 576 | $ 387
Share Repurchase Program [Member] | Class A [Member] |  |
Class of Stock [Line Items] |  |
Treasury Stock, Shares, Acquired | 8.6 | 7.6
Payments for Repurchase of Common Stock | $ 550 | $ 357
Open Market Repurchases [Member] | Class A [Member] |  |
Class of Stock [Line Items] |  |
Treasury Stock, Shares, Acquired | 0.4 | 0.7
Payments for Repurchase of Common Stock | $ 26 | $ 30

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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