International Theme Parks Impact of Consolidating Income Statements of International Theme Parks (Detail) - USD ($) $ in Millions	3 Months Ended										12 Months Ended
	Sep. 28, 2019	[1]	Jun. 29, 2019	[1]	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Revenues	$ 19,100		$ 20,245		$ 14,922	$ 15,303	$ 14,306	$ 15,229	$ 14,548	$ 15,351	$ 69,570	$ 59,434	$ 55,137
Total costs and expenses											(57,719)	(44,597)	(41,264)
Equity in the loss of investees											(103)	$ (102)	$ 320
International Theme Parks
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Revenues											3,859
Total costs and expenses											(3,655)
Equity in the loss of investees											$ (13)

[1] On March 20, 2019, the Company began consolidating the results of TFCF and Hulu (see Note 4 to the Consolidated Financial Statements). As a result, revenues and operating results in the third and fourth quarter of fiscal 2019 reflected the impact of this transaction.