Derivatives 1 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Interest Rate Swaps [Member] | Fair Value Hedges [Member] | Interest Expense, Net [Member]
Effect of interest rate and foreign exchange derivatives on Consolidated Statements of Operations
Amount of net (gain)/loss from derivative instruments recognized in the Condensed Consolidated Statements of Operations	$ (3)	$ (3)
Foreign Currency Contracts [Member] | Other Expenses, Net [Member]
Effect of interest rate and foreign exchange derivatives on Consolidated Statements of Operations
Amount of net (gain)/loss from derivative instruments recognized in the Condensed Consolidated Statements of Operations	$ 5	$ (9)