Long-Lived Assets 3 (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013		Mar. 31, 2012
Depreciation and amortization expense
Depreciation	$ 84	$ 104		$ 111
Total depreciation and amortization expense	426	475		399
Purchased Software Products [Member]
Depreciation and amortization expense
Amortization of intangible assets	117	163	[1]	103
Internally Developed Software Products [Member]
Depreciation and amortization expense
Amortization of intangible assets	165	154		120
Other Intangible Assets [Member]
Depreciation and amortization expense
Amortization of intangible assets	$ 60	$ 54		$ 65

[1] Amount includes impairment recorded in the fourth quarter of fiscal year 2013 of approximately $55 million relating to purchased software (see Note 6, “Long Lived Assets,” in the Notes to the Consolidated Financial Statements for additional information).