Equity in the Income of Investees included in Segment Operating Results (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Schedule of Equity Method Investments
Equity in the income of investees	$ 206	$ 217	$ 418	$ 456
Media Networks
Schedule of Equity Method Investments
Equity in the income of investees	205	217	418	456
Media Networks | Cable
Schedule of Equity Method Investments
Equity in the income of investees	223	223	465	480
Media Networks | Broadcasting
Schedule of Equity Method Investments
Equity in the income of investees	$ (18)	$ (6)	$ (47)	$ (24)