International Theme Park Investments - Impact of Consolidating Cash Flow Statements of International Theme Parks (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]
Cash provided by operations	$ 9,780	$ 9,452	$ 7,966
Investments in parks, resorts and other property	(3,311)	(2,796)	(3,784)
Cash (used in)/provided by other investing activities	(34)
Cash (used in)/provided by financing activities	(6,710)	(4,214)	(2,985)
Impact of exchange rates on cash and cash equivalents	(235)	(18)	(20)
(Decrease)/increase in cash and cash equivalents	(510)	544	202
Cash and cash equivalents, beginning of year	3,931	3,387	3,185
Cash and cash equivalents, end of year	3,421	3,931	3,387
Before International Theme Parks Consolidation
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]
Cash provided by operations	9,294
Investments in parks, resorts and other property	(1,808)
Cash (used in)/provided by other investing activities	(620)
Cash (used in)/provided by financing activities	(7,318)
Impact of exchange rates on cash and cash equivalents	(228)
(Decrease)/increase in cash and cash equivalents	(680)
Cash and cash equivalents, beginning of year	3,325
Cash and cash equivalents, end of year	2,645
International Theme Parks and Adjustments
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items]
Cash provided by operations	486
Investments in parks, resorts and other property	(1,503)
Cash (used in)/provided by other investing activities	586
Cash (used in)/provided by financing activities	608
Impact of exchange rates on cash and cash equivalents	(7)
(Decrease)/increase in cash and cash equivalents	170
Cash and cash equivalents, beginning of year	606
Cash and cash equivalents, end of year	$ 776