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Acquisitions And Divestitures Acquisition of Ottomatika, Inc. (Details) - USD ($)
$ in Millions
Jul. 23, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Business Acquisition [Line Items]        
Goodwill   $ 1,539 $ 656 $ 496
Ottomatika, Inc.        
Business Acquisition [Line Items]        
Business Acquisition, Percentage of Equity Interests Acquired 100.00%      
Total purchase price $ 32      
Purchase price, cash consideration, net of cash acquired 16      
Purchase price, deferred consideration $ 11      
Deferred Consideration Period 3 years      
Contingent Consideration Arrangement, Range of Outcomes, Value, Low $ 0      
Contingent Consideration Arrangement, Range of Outcomes, Value, High $ 5      
Contingent Consideration Period 3 years      
Contingent consideration liability $ 5      
Gain on previously held investment 2      
Fair value of previously held investment 4      
Total purchase price 36      
Indefinite-lived intangible assets 24      
Definite-lived intangible assets 1      
Other assets purchased and liabilities assumed, net (8)      
Identifiable net assets acquired 17      
Goodwill 19      
Total purchase price allocation $ 36      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 4 years