Segment, Major Customer and Major Supplier Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014
Segment Reporting Information [Line Items]
Equity Method Investments	$ 607		$ 612
Assets Held-for-sale, Investment in and Advances to Non-consolidated Affiliates	40		39
Assets	9,304		9,114
Net sales	2,680	2,401
Depreciation and amortization	89	77
Income tax provision	24	3
Capital expenditures	138	181
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	2,680	2,401
Depreciation and amortization	89
Income tax provision	24
Capital expenditures	138
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	0	0
Other And Eliminations [Member]
Segment Reporting Information [Line Items]
Equity Method Investments	0		0
Assets Held-for-sale, Investment in and Advances to Non-consolidated Affiliates	0		0
Assets	58		47
Net sales	(31)	(5)
Other And Eliminations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	53	48
Depreciation and amortization	(7)	(6)
Income tax provision	6	4
Capital expenditures	(7)	13
Other And Eliminations [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	(84)	(53)
South America [Member]
Segment Reporting Information [Line Items]
Equity Method Investments	0		0
Assets Held-for-sale, Investment in and Advances to Non-consolidated Affiliates	40		39
Assets	1,714		1,583
Net sales	420	334
South America [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	403	327
Depreciation and amortization	17	15
Income tax provision	12	(15)
Capital expenditures	17	40
South America [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	17	7
Asia [Member]
Segment Reporting Information [Line Items]
Equity Method Investments	0		0
Assets Held-for-sale, Investment in and Advances to Non-consolidated Affiliates	0		0
Assets	1,562		1,440
Net sales	556	485
Asia [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	529	472
Depreciation and amortization	20	14
Income tax provision	3	4
Capital expenditures	20	65
Asia [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	27	13
North America [Member]
Segment Reporting Information [Line Items]
Equity Method Investments	0		0
Assets Held-for-sale, Investment in and Advances to Non-consolidated Affiliates	0		0
Assets	2,805		2,998
Net sales	821	780
North America [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	815	776
Depreciation and amortization	34	30
Income tax provision	(9)	(1)
Capital expenditures	19	27
North America [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	6	4
Europe [Member]
Segment Reporting Information [Line Items]
Equity Method Investments	607		612
Assets Held-for-sale, Investment in and Advances to Non-consolidated Affiliates	0		0
Assets	3,165		3,046
Net sales	914	807
Europe [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	880	778
Depreciation and amortization	25	24
Income tax provision	12	11
Capital expenditures	89	36
Europe [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net sales	$ 34	$ 29