Document and Entity Information - shares	9 Months Ended
	Jun. 30, 2018	Aug. 01, 2018
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Trading Symbol	DIS
Entity Registrant Name	WALT DISNEY CO/
Entity Central Index Key	0001001039
Current Fiscal Year End Date	--09-29
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		1,487,242,596