Supplemental Statement of Cash Flows Information 1 (Details) (Notional Pooling Arrangement [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Sep. 30, 2014		Sep. 30, 2013
Notional Pooling Arrangement [Member]
Activity under cash pooling arrangement
Total borrowings outstanding at beginning of period	$ 139	[1]	$ 136	[1]
Borrowings	2,703		1,609
Repayments	(2,647)		(1,639)
Foreign currency exchange effect	(56)		20
Total borrowings outstanding at end of period	$ 139	[1]	$ 126	[1]

[1] Included in “Accrued expenses and other current liabilities” in the Company’s Condensed Consolidated Balance Sheets.