Shareholders' Equity - Additional Information (Detail) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended					12 Months Ended			1 Months Ended	3 Months Ended	12 Months Ended	9 Months Ended
	Apr. 30, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011	Apr. 30, 2013 ASR 1	Dec. 29, 2012 ASR 1	Sep. 28, 2013 ASR 1	Jun. 29, 2013 ASR 2
Stockholders Equity Note Disclosure [Line Items]
Preferred stock, shares authorized		5					5
Dividends paid		$ 2,763,000,000	$ 2,789,000,000	$ 2,490,000,000	$ 2,486,000,000	$ 2,500,000,000	$ 10,528,000,000
Quarterly dividends per share declared		$ 3.05	$ 3.05	$ 2.65	$ 2.65	$ 2.65	$ 11.40	$ 2.65	$ 0.00
Maximum amount authorized for repurchase of common stock								10,000,000,000
New amount authorized for repurchase of common stock	60,000,000,000
Accelerated share repurchase program, utilized amount							23,000,000,000
Shares repurchased and retired							19.4			1.5	2.6	4.1	23.5
Accelerated share repurchase program, up-front payment											1,950,000,000		12,000,000,000
Shares repurchase program completion date							April 2013
Shares repurchase price per share												$ 478.20
Shares retired, average price							$ 464.11
Shares retired Amount							$ 9,000,000,000