Accounts Receivable (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at Beginning of Period	$ 3	$ 5	$ 7
Additions Charged to Expense	2	2	1
Accounts Recovered/ (Written- Off)	(1)	(4)	(2)
Foreign Exchange and Other	0	0	(1)
Balance at End of Period	$ 4	$ 3	$ 5