Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements Fair Value Hierarchy (Details)

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Fair Value Measurements Fair Value Hierarchy (Details) (USD $)
In Millions, unless otherwise specified
Mar. 25, 2012
Assets [Abstract]  
Cash equivalents $ 4,824
Marketable Securities [Abstract]  
U.S. Treasury securities and government-related securities 1,519
Corporate bonds and notes 7,847
Mortgage- and asset-backed securities 1,356
Auction rate securities 120
Non-investment-grade debt securities 4,388
Common and preferred stock 2,214
Equity mutual and exchange-traded funds 1,296
Debt mutual funds 1,830
Total marketable securities 20,570
Derivative instruments 34
Other investments 189
Total assets measured at fair value 25,617
Liabilities [Abstract]  
Derivative instruments 15
Other liabilities 194
Total liabilities measured at fair value 209
Level 1 [Member]
  
Assets [Abstract]  
Cash equivalents 1,293
Marketable Securities [Abstract]  
U.S. Treasury securities and government-related securities 660
Corporate bonds and notes 0
Mortgage- and asset-backed securities 0
Auction rate securities 0
Non-investment-grade debt securities 0
Common and preferred stock 1,471
Equity mutual and exchange-traded funds 1,296
Debt mutual funds 1,332
Total marketable securities 4,759
Derivative instruments 0
Other investments 189
Total assets measured at fair value 6,241
Liabilities [Abstract]  
Derivative instruments 3
Other liabilities 189
Total liabilities measured at fair value 192
Level 2 [Member]
  
Assets [Abstract]  
Cash equivalents 3,531
Marketable Securities [Abstract]  
U.S. Treasury securities and government-related securities 859
Corporate bonds and notes 7,847
Mortgage- and asset-backed securities 1,301
Auction rate securities 0
Non-investment-grade debt securities 4,328
Common and preferred stock 743
Equity mutual and exchange-traded funds 0
Debt mutual funds 498
Total marketable securities 15,576
Derivative instruments 34
Other investments 0
Total assets measured at fair value 19,141
Liabilities [Abstract]  
Derivative instruments 12
Other liabilities 0
Total liabilities measured at fair value 12
Level 3 [Member]
  
Assets [Abstract]  
Cash equivalents 0
Marketable Securities [Abstract]  
U.S. Treasury securities and government-related securities 0
Corporate bonds and notes 0
Mortgage- and asset-backed securities 55
Auction rate securities 120
Non-investment-grade debt securities 60
Common and preferred stock 0
Equity mutual and exchange-traded funds 0
Debt mutual funds 0
Total marketable securities 235
Derivative instruments 0
Other investments 0
Total assets measured at fair value 235
Liabilities [Abstract]  
Derivative instruments 0
Other liabilities 5
Total liabilities measured at fair value $ 5