Equity (Schedule of Share Repurchases) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Class of Stock [Line Items]
Payments for Repurchase of Common Stock			$ 197	$ 286
Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	1.1	0.3	4.8	8.1
Payments for Repurchase of Common Stock	$ 47	$ 11	$ 197	$ 286
Share Repurchase Program [Member] | Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	0.9	0.0	4.2	7.1
Payments for Repurchase of Common Stock	$ 37	$ 0	$ 168	$ 250
Open Market Repurchases [Member] | Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	0.2	0.3	0.6	1.0
Payments for Repurchase of Common Stock	$ 10	$ 11	$ 29	$ 36