Segment Information 2 (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Revenue from the United States and international locations
Revenue		$ 1,007	$ 1,034	$ 3,024	$ 3,016
United States
Revenue from the United States and international locations
Revenue		642	671	1,936	1,935
EMEA
Revenue from the United States and international locations
Revenue	[1]	223	230	667	679
Other
Revenue from the United States and international locations
Revenue		$ 142	$ 133	$ 421	$ 402

[1] Consists of Europe, the Middle East and Africa.