Supplemental Statement of Cash Flows Information 1 (Details) - Notional Pooling Arrangement - USD ($) $ in Millions		6 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Notional pooling arrangement
Total borrowings outstanding at beginning of period	[1]	$ 138	$ 139
Borrowings		2,494	2,703
Repayments		(2,497)	(2,647)
Foreign exchange effect		4	(56)
Total borrowings outstanding at end of period	[1]	$ 139	$ 139

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