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Restructuring and Acquisition-Related Activities (Details - Acquisition) - USD ($)
$ in Millions
12 Months Ended
Sep. 12, 2016
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Goodwill, Acquired During Period   $ 578
Finite-lived Intangible Assets Acquired $ 169  
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived Intangible Assets Acquired $ 118  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 14 years  
Technology    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived Intangible Assets Acquired $ 48  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 7 years  
Trade name    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived Intangible Assets Acquired $ 3  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 2 years  
OptionsHouse Acquisition [Member]    
Finite-Lived Intangible Assets [Line Items]    
Payments to Acquire Businesses, Gross $ 725  
Goodwill, Acquired During Period 578  
Finite-lived Intangible Assets Acquired $ 169