Segment Information 2 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Revenue from the United States and international locations
Total revenue	$ 1,069		$ 1,095
United States [Member]
Revenue from the United States and international locations
Total revenue	643		657
EMEA [Member]
Revenue from the United States and international locations
Total revenue	259	[1]	264	[1]
Other [Member]
Revenue from the United States and international locations
Total revenue	$ 167		$ 174

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