Segment Information 2 (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Revenue from the United States and international locations        
Total revenue $ 1,091 $ 1,128 $ 3,239 $ 3,328
United States [Member]        
Revenue from the United States and international locations        
Total revenue 668 667 1,967 1,995
EMEA [Member]        
Revenue from the United States and international locations        
Total revenue 263 [1] 288 [1] 781 [1] 819 [1]
Other [Member]        
Revenue from the United States and international locations        
Total revenue $ 160 $ 173 $ 491 $ 514
[1] Consists of Europe, the Middle East and Africa.