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.