Segment and Geographic Information 2 (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Information about Company by geographic area
Total revenue	$ 4,515		$ 4,610		$ 4,779
Property and equipment, net	295		311		386
Total assets	12,016		11,815		11,997
Total liabilities	6,446		6,365		6,600
From Unaffiliated Customers [Member]
Information about Company by geographic area
Total revenue	4,515		4,610		4,779
Between Geographic Areas [Member]
Information about Company by geographic area
Total revenue	0	[1]	0	[1]	0	[1]
United States [Member]
Information about Company by geographic area
Total revenue	3,123		3,176		3,251
Property and equipment, net	125		138		181
Total assets	8,908		8,897		9,078
Total liabilities	4,919		4,802		4,911
United States [Member] | From Unaffiliated Customers [Member]
Information about Company by geographic area
Total revenue	2,677		2,716		2,779
United States [Member] | Between Geographic Areas [Member]
Information about Company by geographic area
Total revenue	446	[1]	460	[1]	472	[1]
EMEA [Member]
Information about Company by geographic area
Total revenue	1,093	[2]	1,104	[2]	1,182	[2]
Property and equipment, net	116	[2]	108	[2]	121	[2]
Total assets	2,076	[2]	1,911	[2]	1,904	[2]
Total liabilities	890	[2]	939	[2]	1,009	[2]
EMEA [Member] | From Unaffiliated Customers [Member]
Information about Company by geographic area
Total revenue	1,093	[2]	1,104	[2]	1,182	[2]
EMEA [Member] | Between Geographic Areas [Member]
Information about Company by geographic area
Total revenue	0	[1],[2]	0	[1],[2]	0	[1],[2]
Other [Member]
Information about Company by geographic area
Total revenue	745		790		818
Property and equipment, net	54		65		84
Total assets	1,032		1,007		1,015
Total liabilities	637		624		680
Other [Member] | From Unaffiliated Customers [Member]
Information about Company by geographic area
Total revenue	745		790		818
Other [Member] | Between Geographic Areas [Member]
Information about Company by geographic area
Total revenue	0	[1]	0	[1]	0	[1]
Eliminations [Member]
Information about Company by geographic area
Total revenue	(446)		(460)		(472)
Property and equipment, net	0		0		0
Total assets	0		0		0
Total liabilities	0		0		0
Eliminations [Member] | From Unaffiliated Customers [Member]
Information about Company by geographic area
Total revenue	0		0		0
Eliminations [Member] | Between Geographic Areas [Member]
Information about Company by geographic area
Total revenue	$ (446)	[1]	$ (460)	[1]	$ (472)	[1]

[1] Represents royalties from foreign subsidiaries determined as a percentage of certain amounts invoiced to customer.

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