Impact of Stock Options/Rights and Restricted Stock Units on Income (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 29, 2012		Oct. 01, 2011		Oct. 02, 2010
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Stock option/rights compensation expense	$ 115	[1]	$ 133	[1]	$ 142	[1]
RSU compensation expense	310		300		249
Total equity-based compensation expense	425	[2]	433	[2]	391	[2]
Tax impact	(145)		(151)		(145)
Reduction in net income	280		282		246
Equity-based compensation expense capitalized during the period	56		66		79
Tax benefit reported in cash flow from financing activities	$ 122		$ 124		$ 76

[1] Includes stock appreciation rights issued in connection with the acquisition of Playdom

[2] Equity-based compensation expense is net of capitalized equity-based compensation and excludes amortization of previously capitalized equity-based compensation costs. Amortization of previously capitalized equity-based compensation totaled $59 million, $57 million and $131 million in fiscal 2012, 2011 and 2010, respectively.