Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements Fair Value Hierarchy (Details)

v2.4.0.6
Fair Value Measurements Fair Value Hierarchy (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Assets, Fair Value Disclosure [Abstract]  
Cash equivalents classified as held for sale $ 24
Fair Value, Measurements, Recurring [Member]
 
Assets, Fair Value Disclosure [Abstract]  
Cash equivalents 3,521 [1]
U.S. Treasury securities and government-related securities 1,362
Corporate bonds and notes 14,095
Mortgage- and asset-backed securities 1,640
Auction rate securities 84
Common and preferred stock 2,291
Equity funds 1,173
Debt funds 5,801
Total marketable securities 26,446
Derivative instruments 59
Other investments 225
Total assets measured at fair value 30,251
Liabilities, Fair Value Disclosure [Abstract]  
Derivative instruments 10
Other liabilities 225
Total liabilities measured at fair value 235
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
 
Assets, Fair Value Disclosure [Abstract]  
Cash equivalents 1,722
U.S. Treasury securities and government-related securities 770
Corporate bonds and notes 0
Mortgage- and asset-backed securities 0
Auction rate securities 0
Common and preferred stock 1,394
Equity funds 1,173
Debt funds 2,372
Total marketable securities 5,709
Derivative instruments 0
Other investments 225
Total assets measured at fair value 7,656
Liabilities, Fair Value Disclosure [Abstract]  
Derivative instruments 0
Other liabilities 225
Total liabilities measured at fair value 225
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
 
Assets, Fair Value Disclosure [Abstract]  
Cash equivalents 1,799
U.S. Treasury securities and government-related securities 592
Corporate bonds and notes 14,095
Mortgage- and asset-backed securities 1,328
Auction rate securities 0
Common and preferred stock 897
Equity funds 0
Debt funds 3,429
Total marketable securities 20,341
Derivative instruments 59
Other investments 0
Total assets measured at fair value 22,199
Liabilities, Fair Value Disclosure [Abstract]  
Derivative instruments 10
Other liabilities 0
Total liabilities measured at fair value 10
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
 
Assets, Fair Value Disclosure [Abstract]  
Cash equivalents 0
U.S. Treasury securities and government-related securities 0
Corporate bonds and notes 0
Mortgage- and asset-backed securities 312
Auction rate securities 84
Common and preferred stock 0
Equity funds 0
Debt funds 0
Total marketable securities 396
Derivative instruments 0
Other investments 0
Total assets measured at fair value 396
Liabilities, Fair Value Disclosure [Abstract]  
Derivative instruments 0
Other liabilities 0
Total liabilities measured at fair value $ 0
[1] Includes cash equivalents of $24 million that were classified as held for sale at March 31, 2013.