Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities Marketable Securities Table (Details)

v2.4.0.6
Marketable Securities Marketable Securities Table (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 25, 2011
Dec. 26, 2010
Sep. 25, 2011
Trading Securities [Abstract]      
Trading Securities - Current $ 496   $ 0
Trading Securities - Noncurrent 510   0
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 6,080   6,190
Available-for-sale - Noncurrent 9,447   8,785
Fair Value Option [Abstract]      
Debt mutual fund - Current 0   0
Debt mutual fund - Noncurrent 481   476
Marketable Securities - Current 6,576   6,190
Marketable Securities - Noncurrent 10,438   9,261
Contractual maturities of available-for-sale debt securities [Abstract]      
Years to Maturity - Less Than One Year 799    
Years to Maturity - One to Five Years 4,878    
Years to Maturity - Five to Ten Years 2,716    
Years to Maturity - Greater Than Ten Years 1,034    
Years to Maturity - No Single Maturity Date 3,272    
Total 12,699    
Realized Gains and Losses on Sales of Available-for-sale Securities [Abstract]      
Gross Realized Gains 36 128  
Gross Realized Losses (2) (5)  
Net Realized Gains 34 123  
Available-for-sale Securities [Abstract]      
Cost 14,928   14,605
Unrealized Gains 765   572
Unrealized Losses (166)   (202)
Fair Value 15,527   14,975
Investments Classified as Available-for-sale in a Continuous Unrealized Loss Position Deemed to be Temporary [Abstract]      
Less than 12 months - Fair Value 5,534   4,482
Less than 12 months - Unrealized Losses (154)   (197)
More than 12 months - Fair Value 218   185
More than 12 months - Unrealized Losses (12)   (5)
Activity for Credit Loss Portion of Other-than-temporary Impairments on Debt Securities [Roll Forward]      
Beginning balance of credit losses 46 109  
Reductions in credit losses related to securities the Company intends to sell 0 (11)  
Additional credit losses recognized on securities previously impaired 1 0  
Reductions in credit losses related to securities sold (1) (7)  
Accretion of credit losses due to an increase in cash flows expected to be collected 0 (2)  
Ending balance of credit losses 46 89  
U.S. Treasury securities and government-related securities [Member]
     
Trading Securities [Abstract]      
Trading Securities - Current 230   0
Trading Securities - Noncurrent 330   0
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 573   516
Available-for-sale - Noncurrent 30   6
Investments Classified as Available-for-sale in a Continuous Unrealized Loss Position Deemed to be Temporary [Abstract]      
Less than 12 months - Fair Value 419    
Less than 12 months - Unrealized Losses (2)    
More than 12 months - Fair Value 4    
More than 12 months - Unrealized Losses 0    
Corporate bonds and notes [Member]
     
Trading Securities [Abstract]      
Trading Securities - Current 266   0
Trading Securities - Noncurrent 91   0
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 3,503   3,665
Available-for-sale - Noncurrent 2,460   2,353
Investments Classified as Available-for-sale in a Continuous Unrealized Loss Position Deemed to be Temporary [Abstract]      
Less than 12 months - Fair Value 1,930   1,862
Less than 12 months - Unrealized Losses (44)   (41)
More than 12 months - Fair Value 58   41
More than 12 months - Unrealized Losses (5)   0
Mortgage- and asset-backed securities [Member]
     
Trading Securities [Abstract]      
Trading Securities - Current 0   0
Trading Securities - Noncurrent 35   0
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 527   587
Available-for-sale - Noncurrent 132   91
Auction rate securities [Member]
     
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 0   0
Available-for-sale - Noncurrent 122   124
Investments Classified as Available-for-sale in a Continuous Unrealized Loss Position Deemed to be Temporary [Abstract]      
Less than 12 months - Fair Value 3   3
Less than 12 months - Unrealized Losses 0   0
More than 12 months - Fair Value 119   121
More than 12 months - Unrealized Losses (3)   (2)
Non-investment-grade debt securities [Member]
     
Trading Securities [Abstract]      
Trading Securities - Current 0   0
Trading Securities - Noncurrent 54   0
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 20   19
Available-for-sale - Noncurrent 4,005   3,653
Investments Classified as Available-for-sale in a Continuous Unrealized Loss Position Deemed to be Temporary [Abstract]      
Less than 12 months - Fair Value 1,396   1,867
Less than 12 months - Unrealized Losses (60)   (86)
More than 12 months - Fair Value 32   19
More than 12 months - Unrealized Losses (4)   (3)
Common and preferred stock [Member]
     
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 130   76
Available-for-sale - Noncurrent 1,776   1,713
Investments Classified as Available-for-sale in a Continuous Unrealized Loss Position Deemed to be Temporary [Abstract]      
Less than 12 months - Fair Value 313   750
Less than 12 months - Unrealized Losses (27)   (70)
More than 12 months - Fair Value 4   4
More than 12 months - Unrealized Losses 0   0
Equity mutual funds and exchange-traded funds [Member]
     
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 0   0
Available-for-sale - Noncurrent 922   845
Investments Classified as Available-for-sale in a Continuous Unrealized Loss Position Deemed to be Temporary [Abstract]      
Less than 12 months - Fair Value 153    
Less than 12 months - Unrealized Losses (16)    
More than 12 months - Fair Value 0    
More than 12 months - Unrealized Losses 0    
Debt mutual funds [Member]
     
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 1,327   1,327
Available-for-sale - Noncurrent 0   0
Investments Classified as Available-for-sale in a Continuous Unrealized Loss Position Deemed to be Temporary [Abstract]      
Less than 12 months - Fair Value 1,320    
Less than 12 months - Unrealized Losses (5)    
More than 12 months - Fair Value 1    
More than 12 months - Unrealized Losses 0    
Equity securities [Member]
     
Available-for-sale Securities [Abstract]      
Cost 2,428   2,426
Unrealized Gains 443   278
Unrealized Losses (43)   (70)
Fair Value 2,828   2,634
Debt securities [Member]
     
Available-for-sale Securities [Abstract]      
Cost 12,500   12,179
Unrealized Gains 322   294
Unrealized Losses (123)   (132)
Fair Value $ 12,699   $ 12,341