Segment Information Equity in the Income of Investees included in Segment Operating Results (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 28, 2013	Dec. 29, 2012
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees	$ 239	$ 110
Media Networks
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees	239	164
Media Networks | Cable [Member]
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees	257	177
Media Networks | Broadcasting [Member]
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees	$ (18)	$ (13)