Annual report pursuant to Section 13 and 15(d)

The Company and Its Significant Accounting Policies Accumulated Other Comprehensive Income (Details)

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The Company and Its Significant Accounting Policies Accumulated Other Comprehensive Income (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Sep. 30, 2012
Beginning balance total accumulated other comprehensive income $ 753    
Ending balance total accumulated other comprehensive income 634 753  
Investment Income, Nonoperating 1,228 964 880
Foreign Currency Translation Adjustment [Member]
      
Beginning balance total accumulated other comprehensive income (115)    
Other comprehensive income (loss) before reclassifications 1    
Reclassifications from accumulated other comprehensive income (loss) 1 [1]    
Other comprehensive income (loss) 2    
Ending balance total accumulated other comprehensive income (113)    
Noncredit Other-than-Temporary Impairment Losses and Subsequent Changes in Fair Value for Certain Available-for-Sale Debt Securities [Member]
      
Beginning balance total accumulated other comprehensive income 25    
Other comprehensive income (loss) before reclassifications (1)    
Reclassifications from accumulated other comprehensive income (loss) 0 [1]    
Other comprehensive income (loss) (1)    
Ending balance total accumulated other comprehensive income 24    
Net Unrealized Gain on Other Available-for-Sale Securities [Member]
      
Beginning balance total accumulated other comprehensive income 825    
Other comprehensive income (loss) before reclassifications 259    
Reclassifications from accumulated other comprehensive income (loss) (361) [1]    
Other comprehensive income (loss) (102)    
Ending balance total accumulated other comprehensive income 723    
Net Unrealized Gain (Loss) on Derivative Instruments [Member]
      
Beginning balance total accumulated other comprehensive income 18    
Other comprehensive income (loss) before reclassifications 8    
Reclassifications from accumulated other comprehensive income (loss) (26) [2]    
Other comprehensive income (loss) (18)    
Ending balance total accumulated other comprehensive income 0    
Parent [Member]
      
Beginning balance total accumulated other comprehensive income 753    
Other comprehensive income (loss) before reclassifications 267    
Reclassifications from accumulated other comprehensive income (loss) (386)    
Other comprehensive income (loss) (119)    
Ending balance total accumulated other comprehensive income 634    
Reclassification out of Accumulated Other Comprehensive Income [Member] | Net Unrealized Gain (Loss) on Derivative Instruments [Member]
      
RevenuesCostsAndExpenses 26    
Reclassification out of Accumulated Other Comprehensive Income [Member] | NetUnrealizedGainLossOnAFSSecuritiesAndAccumulatedTranslationAdjustmentAndNoncreditOtherThanTempImpairmentLossesAndSubsequentChangesInFVforCertainAFSDebtSecurities [Member]
      
Investment Income, Nonoperating $ 360    
[1] Reclassifications from accumulated other comprehensive income (loss) of $360 million for the fiscal year ended September 28, 2014 were recorded in investment income, net (Note 3).
[2] Reclassifications from accumulated other comprehensive income (loss) of $26 million for the fiscal year ended September 28, 2014 were recorded in revenues, cost of equipment and services revenues, research and development expenses and selling, general and administrative expenses.