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Intangible Assets and Goodwill (Intangible Assets) (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 111 $ 77
Accumulated Amortization 62 54
Completed technology    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 60 37
Accumulated Amortization 32 27
Patents    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 8 8
Accumulated Amortization 5 4
Customer-related    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 23 15
Accumulated Amortization 10 8
Other intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 20 17
Accumulated Amortization $ 15 $ 15