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Equity (Schedule of Share Repurchases) (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Oct. 01, 2016 | Oct. 03, 2015 | Sep. 27, 2014
Class of Stock [Line Items] |  |  |
Dollars | $ 1,944 | $ 495 | $ 295
Class A [Member] |  |  |
Class of Stock [Line Items] |  |  |
Shares | 32.1 | 11.9 | 8.3
Dollars | $ 1,944 | $ 495 | $ 295
Class A [Member] | Share Repurchase Program [Member] |  |  |
Class of Stock [Line Items] |  |  |
Shares | 30.8 | 11.0 | 7.1
Dollars | $ 1,868 | $ 455 | $ 250
Class A [Member] | Open Market Repurchases [Member] |  |  |
Class of Stock [Line Items] |  |  |
Shares | 1.3 | 0.9 | 1.2
Dollars | $ 76 | $ 40 | $ 45

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