Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities (Details)

 v2.3.0.11
Marketable Securities (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 26, 2011
Jun. 27, 2010
Jun. 26, 2011
Jun. 27, 2010
Sep. 26, 2010
Available-for-sale securities [Abstract]          
Available-for-sale - Current $ 4,982   $ 4,982   $ 6,332
Available-for-sale - Noncurrent 9,008   9,008   7,656
Fair value option [Abstract]          
Debt mutual fund - Current 0   0   0
Debt mutual fund - Noncurrent 485   485   467
Time deposits - Current 0   0   400
Time deposits, Noncurrent 0   0   0
Marketable Securities - Current 4,982   4,982   6,732
Marketable Securities - Noncurrent 9,493   9,493   8,123
Effective ownership interest in debt mutual fund (fair value option) (in hundredths) 19.00%   19.00%    
Expiration date of time deposits         December 2010
Contractual maturities of available-for-sale debt securities [Abstract]          
Years to maturity - Less than one year 464   464    
Years to maturity - One to five years 4,016   4,016    
Years to maturity - Five to ten years 2,306   2,306    
Years to maturity - Greater than ten years 966   966    
Years to maturity - No single maturity date 3,265   3,265    
Total available-for-sale debt securities 11,017   11,017    
Realized gains and losses on sales of available-for-sale marketplace securities [Abstract]          
Gross realized gains 74 96 297 289  
Gross realized losses (2) (6) (13) (17)  
Net realized gains 72 90 284 272  
Cost, unrealized gains and losses, and fair value of available-for-sale marketable securities [Abstract]          
Cost 13,059   13,059   13,104
Gross unrealized gains 968   968   915
Gross unrealized losses (37)   (37)   (31)
Fair Value 13,990   13,990   13,988
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Continuous unrealized loss position - Less than 12 months - Fair Value 1,476   1,476   1,131
Continuous unrealized loss position - Less than 12 months - Unrealized losses (33)   (33)   (19)
Continuous unrealized loss position - More than 12 months - Fair Value 165   165   242
Continuous unrealized loss position - More than 12 months - Unrealized losses (4)   (4)   (12)
Activity for credit loss portion of other-than-temporary impairments on debt securities [Roll Forward]          
Beginning balance of credit losses 52 134 109 170 170
Credit losses recognized on securities previously impaired 0 0 (40) 0  
Credit losses recognized on securities previously not impaired 0 0 0 1  
Reductions in credit losses related to securities sold (3) (8) (15) (26)  
Accretion of credit losses due to an increase in cash flows expected to be collected 0 (2) (5) (21)  
Ending balance of credit losses 49 124 49 124 109
U.S. Treasury securities and government-related securities [Member]
         
Available-for-sale securities [Abstract]          
Available-for-sale - Current 209   209   650
Available-for-sale - Noncurrent 4   4   4
Corporate bonds and notes [Member]
         
Available-for-sale securities [Abstract]          
Available-for-sale - Current 2,764   2,764   3,504
Available-for-sale - Noncurrent 2,304   2,304   1,495
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Continuous unrealized loss position - Less than 12 months - Fair Value 480   480   425
Continuous unrealized loss position - Less than 12 months - Unrealized losses (4)   (4)   (1)
Continuous unrealized loss position - More than 12 months - Fair Value 18   18   23
Continuous unrealized loss position - More than 12 months - Unrealized losses 0   0   0
Mortgage- and asset-backed securities [Member]
         
Available-for-sale securities [Abstract]          
Available-for-sale - Current 570   570   629
Available-for-sale - Noncurrent 95   95   38
Auction Rate Securities [Member]
         
Available-for-sale securities [Abstract]          
Available-for-sale - Current 0   0   0
Available-for-sale - Noncurrent 126   126   126
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Continuous unrealized loss position - Less than 12 months - Fair Value 3   3   0
Continuous unrealized loss position - Less than 12 months - Unrealized losses 0   0   0
Continuous unrealized loss position - More than 12 months - Fair Value 123   123   126
Continuous unrealized loss position - More than 12 months - Unrealized losses (2)   (2)   (4)
Non-investment-grade debt securities
         
Available-for-sale securities [Abstract]          
Available-for-sale - Current 21   21   21
Available-for-sale - Noncurrent 3,597   3,597   3,344
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Continuous unrealized loss position - Less than 12 months - Fair Value 754   754   296
Continuous unrealized loss position - Less than 12 months - Unrealized losses (14)   (14)   (7)
Continuous unrealized loss position - More than 12 months - Fair Value 21   21   90
Continuous unrealized loss position - More than 12 months - Unrealized losses (2)   (2)   (8)
Debt Securities [Member]
         
Cost, unrealized gains and losses, and fair value of available-for-sale marketable securities [Abstract]          
Cost 10,616   10,616   10,795
Gross unrealized gains 423   423   512
Gross unrealized losses (22)   (22)   (20)
Fair Value 11,017   11,017   11,287
Equity Securities [Member]
         
Cost, unrealized gains and losses, and fair value of available-for-sale marketable securities [Abstract]          
Cost 2,443   2,443   2,309
Gross unrealized gains 545   545   403
Gross unrealized losses (15)   (15)   (11)
Fair Value 2,973   2,973   2,701
Common and preferred stock [Member]
         
Available-for-sale securities [Abstract]          
Available-for-sale - Current 91   91   52
Available-for-sale - Noncurrent 1,861   1,861   1,670
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Continuous unrealized loss position - Less than 12 months - Fair Value 239   239   133
Continuous unrealized loss position - Less than 12 months - Unrealized losses (15)   (15)   (10)
Continuous unrealized loss position - More than 12 months - Fair Value 3   3   3
Continuous unrealized loss position - More than 12 months - Unrealized losses 0   0   0
Equity mutual and exchange-traded funds
         
Available-for-sale securities [Abstract]          
Available-for-sale - Current 0   0   0
Available-for-sale - Noncurrent 1,021   1,021   979
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Continuous unrealized loss position - Less than 12 months - Fair Value         277
Continuous unrealized loss position - Less than 12 months - Unrealized losses         (1)
Continuous unrealized loss position - More than 12 months - Fair Value         0
Continuous unrealized loss position - More than 12 months - Unrealized losses         0
Debt Mutual Funds [Member]
         
Available-for-sale securities [Abstract]          
Available-for-sale - Current 1,327   1,327   1,476
Available-for-sale - Noncurrent $ 0   $ 0   $ 0