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Equity (Schedule of Share Repurchases) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Class of Stock [Line Items]
Payments for Repurchase of Common Stock			$ 196	$ 146
Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	0.8	1.0	2.3	2.4
Payments for Repurchase of Common Stock	$ 64	$ 63	$ 196	$ 146
Under share repurchase program | Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	0.7	0.8	1.8	1.7
Payments for Repurchase of Common Stock	$ 50	$ 50	$ 150	$ 100
To fund certain obligations under equity compensation plans | Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	0.1	0.2	0.5	0.7
Payments for Repurchase of Common Stock	$ 14	$ 13	$ 46	$ 46

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The cash outflow to reacquire common stock during the period.

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-Publisher FASB
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-Topic 230
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