Supplemental Statement of Cash Flows Information 1 (Details) - Notional Pooling Arrangement - USD ($) $ in Millions		6 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
Notional pooling arrangement
Total borrowings outstanding at beginning of period	[1]	$ 139	$ 138
Borrowings		467	2,494
Repayments		(456)	(2,497)
Foreign exchange effect		(11)	4
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.