Segment Information 2 (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue from the United States and international locations
Revenue		$ 1,005	$ 1,079	$ 1,982	$ 2,148
United States
Revenue from the United States and international locations
Revenue		645	656	1,264	1,299
EMEA
Revenue from the United States and international locations
Revenue	[1]	228	259	449	518
Other
Revenue from the United States and international locations
Revenue		$ 132	$ 164	$ 269	$ 331

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