Supplemental Statement of Cash Flows Information 1 (Details) (Notional Pooling Arrangement [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Sep. 30, 2013		Sep. 30, 2012
Notional Pooling Arrangement [Member]
Notional Pooling Arrangement [Line Items]
Total borrowing position outstanding at beginning of period	$ 136	[1]	$ 139	[1]
Borrowings	1,609		513
Repayments	(1,639)		(481)
Foreign currency exchange effect	20		(7)
Total borrowing position outstanding at end of period	$ 126	[1]	$ 164	[1]

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