Impact of Consolidating Balance Sheets of International Theme Parks (Details) - USD ($) $ in Millions		Jun. 30, 2018	Sep. 30, 2017
Schedule of Condensed Consolidating Balance Sheets [Line Items]
Cash and Cash Equivalents		$ 4,326	$ 4,017
Other current assets		769	588
Total current assets		17,729	15,889
Parks, resorts and other property		29,373	28,406
Other assets		2,653	2,390
Total assets		98,792	95,789
Current liabilities		20,214	19,595
Borrowings - long-term		17,681	19,119
International Theme Parks
Schedule of Condensed Consolidating Balance Sheets [Line Items]
Cash and Cash Equivalents		745	843
Other current assets		427	376
Total current assets		1,172	1,219
Parks, resorts and other property		9,213	9,403
Other assets		96	111
Total assets	[1]	10,481	10,733
Current liabilities		1,018	1,163
Borrowings - long-term		1,182	1,145
Other long-term liabilities		370	371
Total liabilities	[1]	$ 2,570	$ 2,679

[1] Total assets of the Asia Theme Parks were $8 billion at both June 30, 2018 and September 30, 2017 including parks, resorts and other property of $7 billion. Total liabilities of the Asia Theme Parks were $2 billion at both June 30, 2018 and September 30, 2017.