Compensation Expense Related to Stock Options, Stock Appreciation Rights and Restricted Stock Units (RSUs) (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
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Stock options/rights	$ 29	[1]	$ 38	[1]	$ 60	[1]	$ 74	[1]
RSUs	84		80		157		147
Total equity-based compensation expense	113	[2]	118	[2]	217	[2]	221	[2]
Equity-based compensation expense capitalized during the period	$ 15		$ 17		$ 28		$ 34

[1] Includes stock appreciation rights issued in connection with 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. During the quarter and six months ended March 31, 2012, amortization of previously capitalized equity-based compensation totaled $16 million and $24 million, respectively. During the quarter and six months ended April 2, 2011, amortization of previously capitalized equity-based compensation totaled $6 million and $35 million, respectively.