Equity in the Income of Investees included in Segment Operating Results (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net	$ (312)	$ 6	$ (236)	$ 49
Equity Method Investment, Other than Temporary Impairment	(353)	0	(353)	0
Media Networks
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net	182	182	361	341
Parks, Experiences and Products
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net	0	(7)	(12)	(14)
Direct-to-Consumer & International
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net	(141)	(169)	(232)	(278)
Total Segments
Schedule of Equity Method Investments
Equity in the income / (loss) of investees, net	41	6	117	49
Vice Media
Schedule of Equity Method Investments
Equity Method Investment, Other than Temporary Impairment	$ (353)	$ 0	$ (353)	$ 0