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Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

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Capital Stock (Details) (USD $)	1 Months Ended	3 Months Ended													12 Months Ended
Capital Stock (Details) (USD $)	Nov. 02, 2011	Dec. 25, 2011	Sep. 25, 2011	Jun. 26, 2011	Mar. 27, 2011	Dec. 26, 2010	Sep. 26, 2010	Jun. 27, 2010	Mar. 28, 2010	Dec. 27, 2009	Sep. 27, 2009	Jun. 28, 2009	Mar. 29, 2009	Dec. 28, 2008	Sep. 25, 2011	Sep. 26, 2010	Sep. 27, 2009	Mar. 08, 2011	Mar. 01, 2010	Mar. 03, 2009
Preferred Stock [Abstract]
Shares of preferred stock authorized for issuance			8,000,000				8,000,000								8,000,000	8,000,000
Number of preferred stock series															one or more	one or more
Par value of preferred stock authorized for issuance			$ 0.0001				$ 0.0001								$ 0.0001	$ 0.0001
Shares of preferred stock designated as series A junior participating preferred stock			4,000,000				4,000,000								4,000,000	4,000,000
Preferred stock, shares outstanding			0				0								0	0
Preferred Share Purchase Rights Agreement [Abstract]
Purchase price of series A junior participating preferred stock			$ 180												$ 180
Minimum percentage of beneficial ownership by an acquiring person at which rights are exercisable			20.00%												20.00%
Expiration date of rights															Sep. 25, 2015
Redemption price per right			$ 0.001												$ 0.001
Stock Repurchase Program [Abstract]
Authorized amount of repurchase of common stock															$ 3,000,000,000
Number of shares of common stock repurchased and retired	2,046,000														2,878,000	79,789,000	8,920,000
Value of common stock repurchased and retired	99,000,000														142,000,000	3,000,000,000	284,000,000
Remaining authorized amount of repurchase of common stock			1,000,000,000												1,000,000,000
Option indexed to issuer's equity, indexed shares			11,800,000												11,800,000
Maximum value, net of premiums received, of outstanding options indexed to issuers equity			511,000,000												511,000,000
Proceeds from derivative instrument, financing activities															75,000,000	0	0
Foreign currency put option contracts derivative liabilities at fair value			80,000,000				0				0				80,000,000	0	0
Loss recognized in investment income due to changes in fair value of put options															5,000,000
Dividends [Abstract]
Quarterly dividend per share of common stock, before increase																		$ 0.190	$ 0.170	$ 0.160
Quarterly dividend per share of common stock, after increase																		$ 0.215	$ 0.190	$ 0.170
Dividends charged to retained earnings - per share		$ 0.215	$ 0.215	$ 0.215	$ 0.190	$ 0.190	$ 0.19	$ 0.19	$ 0.17	$ 0.17	$ 0.17	$ 0.17	$ 0.16	$ 0.16	$ 0.81	$ 0.72	$ 0.66
Dividends charged to retained earnings - total			368,000,000	360,000,000	319,000,000	314,000,000	305,000,000	309,000,000	279,000,000	284,000,000	283,000,000	282,000,000	264,000,000	264,000,000	1,361,000,000	1,177,000,000	1,093,000,000
Cash dividends, date announced															Oct. 11, 2011
Cash dividends, date payable															Dec. 21, 2011
Cash dividends, date of record															Nov. 23, 2011
Noncontrolling Interests [Abstract]
License period of licenses															20 years
Advance payment deposit			994,000,000				1,100,000,000								994,000,000	1,100,000,000
Date of commercial launch of wireless service															within five years of the assignment date
Proceeds from noncontrolling interests															$ 62,000,000	$ 0	$ 0
Noncontrolling Interest, Ownership Percentage by Parent			74.00%												74.00%