Annual report pursuant to Section 13 and 15(d)

Marketable Securities Marketable Securities Table (Details)

v2.4.0.8
Marketable Securities Marketable Securities Table (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 29, 2013
Sep. 30, 2012
Sep. 25, 2011
Schedule of Marketable Securities [Line Items]      
Marketable Securities - Current $ 8,824 $ 8,567  
Marketable Securities - Noncurrent 14,440 14,463  
Trading Securities [Abstract]      
Trading Securities - Current 510 479  
Trading Securities - Noncurrent 409 550  
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 8,314 8,088  
Available-for-sale - Noncurrent 13,494 13,393  
Fair Value Option [Abstract]      
Debt fund - Current 0 0  
Debt fund - Noncurrent 537 520  
Contractual Maturities of Available-for-sale Debt Securities [Abstract]      
Years to Maturity - Less Than One Year 1,695    
Years to Maturity - One to Five Years 6,842    
Years to Maturity - Five to Ten Years 2,303    
Years to Maturity - Greater Than Ten Years 1,296    
Years to Maturity - No Single Maturity Date 6,353    
Total 18,489    
Realized Gains and Losses on Sales of Available-for-sale Securities [Abstract]      
Gross Realized Gains 430 296 356
Gross Realized Losses (142) (25) (30)
Net Realized Gains 288 271 326
Available-for-sale Securities [Abstract]      
Available For Sale Securities Cost 20,825 20,313  
Available For Sale Securities Unrealized Gains 1,189 1,201  
Available For Sale Securities Unrealized Loss (206) (33)  
Available For Sale Securities Fair Value 21,808 21,481  
Investments in a Continuous Unrealized Loss Position [Abstract]      
Less than 12 months - Fair value 5,642 1,035  
Less than 12 months - Unrealized losses (204) (18)  
More than 12 months - Fair value 135 423  
More than 12 months - Unrealized losses (2) (15)  
Activity for Credit Loss Portion of Other-than-temporary Impairments on Debt Securities [Roll Forward]      
Beginning balance of credit losses 31 46 109
Reductions in credit losses related to securities the Company intends to sell (7) (1) (40)
Credit losses recognized on securities previously not impaired 1 5 2
Additional credit losses recognized on securities previously impaired 1 2 0
Reductions in credit losses related to securities sold (21) (21) (20)
Accretion of credit losses due to an increase in cash flows expected to be collected (1) 0 (5)
Ending balance of credit losses 4 31 46
U.S. Treasury securities and government-related securities [Member]
     
Trading Securities [Abstract]      
Trading Securities - Current 241 196  
Trading Securities - Noncurrent 49 254  
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 721 362  
Available-for-sale - Noncurrent 71 592  
Investments in a Continuous Unrealized Loss Position [Abstract]      
Less than 12 months - Fair value 42    
Less than 12 months - Unrealized losses (1)    
More than 12 months - Fair value 0    
More than 12 months - Unrealized losses 0    
Corporate bonds and notes [Member]
     
Trading Securities [Abstract]      
Trading Securities - Current 269 283  
Trading Securities - Noncurrent 256 176  
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 4,533 4,554  
Available-for-sale - Noncurrent 6,812 7,570  
Investments in a Continuous Unrealized Loss Position [Abstract]      
Less than 12 months - Fair value 2,084 723  
Less than 12 months - Unrealized losses (31) (8)  
More than 12 months - Fair value 24 256  
More than 12 months - Unrealized losses (1) (9)  
Mortgage- and asset-backed securities [Member]
     
Trading Securities [Abstract]      
Trading Securities - Current 0 0  
Trading Securities - Noncurrent 104 120  
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 745 1,157  
Available-for-sale - Noncurrent 328 241  
Investments in a Continuous Unrealized Loss Position [Abstract]      
Less than 12 months - Fair value 367 143  
Less than 12 months - Unrealized losses (5) (1)  
More than 12 months - Fair value 24 7  
More than 12 months - Unrealized losses 0 0  
Auction rate securities [Member]
     
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 0 0  
Available-for-sale - Noncurrent 83 118  
Investments in a Continuous Unrealized Loss Position [Abstract]      
Less than 12 months - Fair value 0 0  
Less than 12 months - Unrealized losses 0 0  
More than 12 months - Fair value 83 115  
More than 12 months - Unrealized losses (1) (1)  
Common and preferred stock [Member]
     
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 8 57  
Available-for-sale - Noncurrent 2,351 2,030  
Investments in a Continuous Unrealized Loss Position [Abstract]      
Less than 12 months - Fair value 291 105  
Less than 12 months - Unrealized losses (41) (5)  
More than 12 months - Fair value 0 9  
More than 12 months - Unrealized losses 0 0  
Equity funds [Member]
     
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 0 0  
Available-for-sale - Noncurrent 960 1,126  
Investments in a Continuous Unrealized Loss Position [Abstract]      
Less than 12 months - Fair value 82 64  
Less than 12 months - Unrealized losses (3) (4)  
More than 12 months - Fair value 0 36  
More than 12 months - Unrealized losses 0 (5)  
Debt funds [Member]
     
Available-for-sale Securities [Abstract]      
Available-for-sale - Current 2,307 1,958  
Available-for-sale - Noncurrent 2,889 1,716  
Investments in a Continuous Unrealized Loss Position [Abstract]      
Less than 12 months - Fair value 2,776    
Less than 12 months - Unrealized losses (123)    
More than 12 months - Fair value 4    
More than 12 months - Unrealized losses 0    
Equity Securities [Member]
     
Available-for-sale Securities [Abstract]      
Available For Sale Securities Cost 2,570 2,599  
Available For Sale Securities Unrealized Gains 793 628  
Available For Sale Securities Unrealized Loss (44) (14)  
Available For Sale Securities Fair Value 3,319 3,213  
Debt Securities (including debt funds) [Member]
     
Available-for-sale Securities [Abstract]      
Available For Sale Securities Cost 18,255 17,714  
Available For Sale Securities Unrealized Gains 396 573  
Available For Sale Securities Unrealized Loss (162) (19)  
Available For Sale Securities Fair Value $ 18,489 $ 18,268