Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net sales	$ 2,680	$ 2,401
Cost of goods sold (exclusive of depreciation and amortization)	2,329	2,098
Selling, general and administrative expenses	108	120
Depreciation and amortization	89	77
Research and development expenses	12	10
Interest expense and amortization of debt issuance costs	81	76
Loss (gain) on assets held for sale	11	0
Restructuring and impairment, net	6	9
Equity in net loss of non–consolidated affiliates	2	4
Other (income) expense, net	5	(10)
Total expenses	2,621	2,384
Income (loss) before income taxes	59	17
Income tax provision (benefit)	24	3
Net income	35	14
Net income attributable to noncontrolling interests	0	0
Net income (loss) attributable to our common shareholder	$ 35	$ 14