Product Alignment And Asset Impairment Charges (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010	Sep. 30, 2010 Technology Solutions [Member]	Dec. 31, 2010 Technology Solutions [Member]	Dec. 31, 2011 Product Alignment [Member] Technology Solutions [Member]	Dec. 31, 2011 Cost Of Sales [Member] Product Alignment [Member] Technology Solutions [Member]	Dec. 31, 2011 Operating Expenses [Member] Product Alignment [Member] Technology Solutions [Member]	Dec. 31, 2011 Non-Cash Asset Impairment Charges [Member] Product Alignment [Member] Technology Solutions [Member]	Dec. 31, 2011 Severance [Member] Product Alignment [Member] Technology Solutions [Member]	Dec. 31, 2011 Other Product Alignment Charges [Member] Product Alignment [Member] Technology Solutions [Member]	Dec. 31, 2011 Customer Allowances [Member] Product Alignment [Member] Technology Solutions [Member]
Product Alignment And Asset Impairment Charges [Line Items]
Pre-tax charges resulting from product alignment plan					$ 42	$ 26	$ 16	$ 22	$ 6	$ 8	$ 6
Amortization period for capitalized software held for sale (years)	3
Asset impairment charge - capitalized software held for sale		$ 72	$ 72	$ 72