Indebtedness (Trade Receivables Securitization Narrative) (Details) (Trade receivables securitization [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Dec. 31, 2013 entities
Debt Instrument [Line Items]
Number of commercial bank conduits participating in trade receivables securitization agreement	3
Accounts receivable from Securitization	$ 295
Accounts Receivable Securitization, Expiration Date, Original	December 4, 2015
Accounts Receivable Securitization, Expiration Date	December 5, 2016
Basis spread on variable rate	0.75%
Maximum [Member]
Debt Instrument [Line Items]
Accounts receivable from Securitization	$ 295