Impact of Consolidating Balance Sheets of International Theme Parks (Details) - USD ($) $ in Millions		Mar. 31, 2018	Sep. 30, 2017
Schedule of Condensed Consolidating Balance Sheets [Line Items]
Cash and Cash Equivalents		$ 4,179	$ 4,017
Other current assets		536	588
Total current assets		16,808	15,889
Parks, resorts and other property		29,200	28,406
Other assets		2,401	2,390
Total assets		97,943	95,789
Current liabilities		19,728	19,595
Borrowings - long-term		18,766	19,119
International Theme Parks
Schedule of Condensed Consolidating Balance Sheets [Line Items]
Cash and Cash Equivalents		780	843
Other current assets		450	376
Total current assets		1,230	1,219
Parks, resorts and other property		9,640	9,403
Other assets		94	111
Total assets	[1]	10,964	10,733
Current liabilities		1,075	1,163
Borrowings - long-term		1,226	1,145
Other long-term liabilities		386	371
Total liabilities	[1]	$ 2,687	$ 2,679

[1] Total assets of the Asia Theme Parks were $8 billion at March 31, 2018 and September 30, 2017, which primarily consist of parks, resorts and other property of $7 billion at March 31, 2018 and September 30, 2017. Total liabilities of the Asia Theme Parks were $2 billion at March 31, 2018 and September 30, 2017.