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National Semiconductor acquisition (Purchase price allocation) (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended0 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 23, 2011
Sep. 30, 2011
National [Member]
Sep. 30, 2011
National [Member]
Sep. 23, 2011
National [Member]
Business Acquisition [Line Items]      
Acquisition percentage of outstanding common stock     100.00%
Amount of revenue of acquiree included in consolidated statement of income since acquisition   $ 18  
Business Acquisition, Purchase Price Allocation [Abstract]      
Cash and cash equivalents     1,145
Current assets     455
Inventory     225
Property, plant and equipment     904
Other assets     227
Acquired intangible assets2,974  2,9742,9742,974
Goodwill     3,527
Assumed current liabilities     (195)
Assumed long-term debt     (1,105)
Deferred taxes and other assumed non-current liabilities     (1,600)
Total consideration transferred  6,557   
Business Acquisition, Cost of Acquired Entity, Purchase Price [Abstract]      
Cash payments     6,535
Fair value of vested share-based awards assumed by TI     22
Total consideration transferred to National shareholders     6,557
Total cash flow impact, business acquisition5,39059  5,390 
Amount of goodwill deductible for tax purposes   $ 0$ 0