Financial Information by Operating Segments (Parenthetical) (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
Studio Entertainment
Segment Reporting Information [Line Items]
Increases/(decreases) allocations on segment revenues and operating income	$ 54	$ 45	$ 130	$ 118
Consumer Products
Segment Reporting Information [Line Items]
Increases/(decreases) allocations on segment revenues and operating income	(53)	(44)	(129)	(116)
Interactive Media
Segment Reporting Information [Line Items]
Increases/(decreases) allocations on segment revenues and operating income	$ (1)	$ (1)	$ (1)	$ (2)