Equity in the Income of Investees included in Segment Operating Results (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net		$ (1)	$ 73	$ (234)	$ 122
Equity Method Investment, Other than Temporary Impairment	[1]	(185)	0	(538)	0
Amortization of Intangible Assets Held by Equity Investees		(15)	0	(15)	0
Media Networks
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net		192	197	553	538
Parks, Experiences and Products
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net		0	(5)	(12)	(19)
Direct-to-Consumer & International
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net		7	(119)	(222)	(397)
Total Segments
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net		$ 199	$ 73	$ 319	$ 122

[1] an impairment of an investment in a cable channel at A+E Television Networks