Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements Activity Between Levels of the Fair Value Hierarchy (Details)

v2.4.0.8
Fair Value Measurements Activity Between Levels of the Fair Value Hierarchy (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Auction Rate Securities [Member]
   
Activity for Marketable Securities Classified Within Level 3 of the Valuation Hierarchy [Roll Forward]    
Beginning balance of Level 3 $ 83 $ 118
Total realized and unrealized gains (losses):    
Included in investment income, net 0 0
Included in other comprehensive income 0 1
Purchases 0 0
Sales 0 0
Settlements 0 (36)
Transfers (out of) into Level 3 0 0
Ending balance of Level 3 83 83
Mortgage- and asset-backed securities [Member]
   
Activity for Marketable Securities Classified Within Level 3 of the Valuation Hierarchy [Roll Forward]    
Beginning balance of Level 3 239 203
Total realized and unrealized gains (losses):    
Included in investment income, net 11 8
Included in other comprehensive income (3) (6)
Purchases 107 163
Sales (126) (70)
Settlements (40) (77)
Transfers (out of) into Level 3 (2) 18
Ending balance of Level 3 $ 186 $ 239