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Segment Information 2 (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Revenue from the United States and international locations    
Revenue $ 1,025 $ 999
United States    
Revenue from the United States and international locations    
Revenue 657 637
EMEA    
Revenue from the United States and international locations    
Revenue [1] 229 225
Other    
Revenue from the United States and international locations    
Revenue $ 139 $ 137
[1] Consists of Europe, the Middle East and Africa.