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Equity (Schedule of Share Repurchases) (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Oct. 03, 2015 | Sep. 27, 2014 | Sep. 28, 2013
Class of Stock [Line Items] |  |  |
Dollars | $ 495 | $ 295 | $ 614
Class A [Member] |  |  |
Class of Stock [Line Items] |  |  |
Shares | 11.9 | 8.3 | 23.9
Dollars | $ 495 | $ 295 | $ 614
Class A [Member] | Share Repurchase Program [Member] |  |  |
Class of Stock [Line Items] |  |  |
Shares | 11.0 | 7.1 | 21.1
Dollars | $ 455 | $ 250 | $ 550
Class A [Member] | Open Market Repurchases [Member] |  |  |
Class of Stock [Line Items] |  |  |
Shares | 0.9 | 1.2 | 2.8
Dollars | $ 40 | $ 45 | $ 64

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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=56944662&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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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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