Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended				6 Months Ended										6 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014 Other long-term liabilities [Member]	Mar. 31, 2014 Other long-term liabilities [Member]	Sep. 30, 2014 Accrued expenses and other current liabilities [Member]	Mar. 31, 2014 Accrued expenses and other current liabilities [Member]	Sep. 30, 2014 Brazilian Tax Authorities and Other Third Parties [Member]	Sep. 30, 2014 Restructuring Action [Member]	Sep. 30, 2014 Brazil [Member] Settlement with Taxing Authority [Member]	Mar. 31, 2014 Brazil [Member] Settlement with Taxing Authority [Member]	Sep. 30, 2014 Brazil [Member] Settlement with Taxing Authority [Member] Other long-term liabilities [Member]	Jun. 30, 2013 Brazil [Member] Settlement with Taxing Authority [Member] Other long-term liabilities [Member]	Sep. 30, 2014 Brazil [Member] Settlement with Taxing Authority [Member] Accrued expenses and other current liabilities [Member]	Jun. 30, 2013 Brazil [Member] Settlement with Taxing Authority [Member] Accrued expenses and other current liabilities [Member]	Sep. 30, 2014 Brazil [Member] Settlement with Taxing Authority [Member] Other long-term assets - third parties [Member]
Loss Contingencies [Line Items]
Estimated range of loss, minimum	$ 0				$ 0
Estimated range of loss, maximum	85,000,000				85,000,000
Accrual for Environmental Loss Contingencies [Abstract]
Accrual for environmental loss contingencies	7,000,000				7,000,000									22,000,000
Accrual for environmental loss contingencies, noncurrent	29,000,000				29,000,000				26,000,000	21,000,000
Accrual for environmental loss contingencies, current											3,000,000	3,000,000
Loss Contingency Accrual [Abstract]
Period for settlement payments															180 months
Settlement liabilities													18,000,000		97,000,000	107,000,000	87,000,000	96,000,000	10,000,000	11,000,000
Loss on Brazilian tax litigation, net	(2,000,000)	[1]	(2,000,000)	[1]	(4,000,000)	[1]	(3,000,000)	[1]
Cash deposits																					$ 6,000,000

[1] See Note 16 – Commitments and Contingencies – Brazil Tax and Legal Matters for further details.