Reconciliation of Segment Operating Income to Income before Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Mar. 31, 2012		Apr. 02, 2011		Mar. 31, 2012		Apr. 02, 2011
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	$ 1,945	[1]	$ 1,773	[1]	$ 4,389	[1]	$ 3,981	[1]
Restructuring and impairment charges	(38)				(44)		(12)
Other income	184				184		75
Net interest expense	(95)		(83)		(185)		(178)
Income before income taxes	1,876		1,568		4,117		3,632
Corporate and unallocated shared expenses
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	$ (120)		$ (122)		$ (227)		$ (234)

[1] Studio Entertainment segment revenues and operating income include an allocation of Consumer Products and Interactive Media revenues which is meant to reflect royalties on sales of merchandise based on certain Studio film properties. The increases/(decreases) related to these allocations on segment revenues and operating income as reported in the above table are as follows: Quarter Ended Six Months Ended March 31, 2012 April 2, 2011 March 31, 2012 April 2, 2011 Studio Entertainment $ 54 $ 45 $ 130 $ 118 Consumer Products (53 ) (44 ) (129 ) (116 ) Interactive Media (1 ) (1 ) (1 ) (2 ) $ - $ - $ - $ -