Impact of Consolidating Income Statements of International Theme Parks (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Revenues:	$ 15,228	$ 14,238	$ 45,127	$ 42,358
Cost and expenses	(11,304)	(10,450)	(33,373)	(31,114)
Equity in the loss of investees	$ 73	$ 124	122	$ 327
International Theme Parks
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Revenues:			2,781
Cost and expenses			(2,702)
Equity in the loss of investees			$ (19)