Debt (Details)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Mar. 31, 2015 Floating Rate Term Loan Facility, due March 2017 [Member] USD ($)	Mar. 31, 2014 Floating Rate Term Loan Facility, due March 2017 [Member] USD ($)	Mar. 31, 2015 8.375% Senior Notes, due December 2017 [Member] USD ($)	Mar. 31, 2014 8.375% Senior Notes, due December 2017 [Member] USD ($)	Dec. 17, 2010 8.375% Senior Notes, due December 2017 [Member] USD ($)	Mar. 31, 2015 8.75% Senior Notes, due December 2020 [Member] USD ($)	Mar. 31, 2014 8.75% Senior Notes, due December 2020 [Member] USD ($)	Dec. 17, 2010 8.75% Senior Notes, due December 2020 [Member] USD ($)	Mar. 31, 2015 Capital Lease Obligations, due through July 2017 [Member] USD ($)	Mar. 31, 2014 Capital Lease Obligations, due through July 2017 [Member] USD ($)	Mar. 31, 2015 Loans due November 2015 to September 2020 [Member] Korea [Member] USD ($)	Mar. 31, 2015 Loans due November 2015 to September 2020 [Member] Korea [Member] KRW	Mar. 31, 2014 Loans due November 2015 to September 2020 [Member] Korea [Member] USD ($)	Mar. 31, 2015 Capital Lease Obligation, due December 2019 [Member] Switzerland [Member] USD ($)	Mar. 31, 2015 Capital Lease Obligation, due December 2019 [Member] Switzerland [Member] CHF	Mar. 31, 2014 Capital Lease Obligation, due December 2019 [Member] Switzerland [Member] USD ($)	Mar. 31, 2015 BNDES Loans due February 2015 through April 2021 [Member] Brazil [Member] USD ($)	Mar. 31, 2015 BNDES Loans due February 2015 through April 2021 [Member] Brazil [Member] BRL	Mar. 31, 2014 BNDES Loans due February 2015 through April 2021 [Member] Brazil [Member] USD ($)	Mar. 31, 2015 Other Debt, due through December 2020 [Member] USD ($)	Mar. 31, 2014 Other Debt, due through December 2020 [Member] USD ($)	Mar. 31, 2015 Short-term Borrowings [Member] USD ($)	Mar. 31, 2014 Short-term Borrowings [Member] USD ($)
Debt Instrument [Line Items]
Interest rates			3.75%		8.375%			8.75%			3.64%		2.93%	2.93%		7.50%	7.50%		5.91%	5.91%		6.08%		3.21%
Short-term borrowings	$ 846,000,000	$ 723,000,000																						$ 846,000,000	$ 723,000,000
Long-term debt, principal			1,731,000,000	1,749,000,000	1,100,000,000	1,100,000,000		1,400,000,000	1,400,000,000		9,000,000	11,000,000	192,000,000		155,000,000				7,000,000		13,000,000	5,000,000	10,000,000
Capital lease obligations, principal																28,000,000		36,000,000
Total debt	5,318,000,000	5,197,000,000
Long-term debt, unamortized carrying value adjustments			(13,000,000)	(20,000,000)	0	0		0	0		0	0	0		0				(1,000,000)		(2,000,000)	0	0	0	0
Long-term debt	4,457,000,000	4,451,000,000	1,718,000,000	1,729,000,000	1,100,000,000	1,100,000,000		1,400,000,000	1,400,000,000		9,000,000	11,000,000	192,000,000		155,000,000				6,000,000		11,000,000	5,000,000	10,000,000
Capital lease obligations, carrying value adjustment																(1,000,000)		(1,000,000)
Capital lease obligations, carrying value																27,000,000		35,000,000
Total debt, carrying value	5,303,000,000	5,174,000,000
Debt instrument, unamortized carrying value adjustment	(15,000,000)	(23,000,000)
Current portion of long-term debt	(108,000,000)	(92,000,000)
Long-term debt, net of current portion, principal	4,364,000,000	4,382,000,000
Long–term debt, net of current portion	4,349,000,000	4,359,000,000
Principal amount							1,100,000,000			1,400,000,000				212,000,000,000						22,000,000
Principal obligation on capital leases	$ 36,000,000																27,000,000