Product Alignment Charges Product Alignment Charges (Details) (Product Alignment [Member], Technology Solutions [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Dec. 31, 2011	Dec. 31, 2011
Other Nonrecurring Expense	$ 42	$ 42
Cost of Sales [Member]
Other Nonrecurring Expense	26
Operating Expense [Member]
Other Nonrecurring Expense	16
Non Cash Asset Impairment Charges [Member]
Other Nonrecurring Expense	22
Employee Severance [Member]
Other Nonrecurring Expense	6
Customer Allowances [Member]
Other Nonrecurring Expense	6
Other Product Alignment Charges [Member]
Other Nonrecurring Expense	$ 8