Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Current assets
Cash and cash equivalents	$ 628	$ 509	$ 301	$ 317
Accounts receivable, net
— third parties (net of uncollectible accounts of $3 and $4 as of March 31, 2015 and 2014, respectively)	1,289	1,382
— related parties	53	54
Inventories	1,431	1,173
Prepaid expenses and other current assets	112	101
Fair value of derivative instruments	77	51
Deferred income tax assets	79	101
Assets held for sale	6	102
Total current assets	3,675	3,473
Property, plant and equipment, net	3,542	3,513
Goodwill	607	611
Intangible assets, net	584	640
Investment in and advances to non–consolidated affiliates	447	612
Deferred income tax assets	95	80
Other long–term assets
— third parties	137	173
— related parties	15	12
Total assets	9,102	9,114
Current liabilities
Current portion of long–term debt	108	92
Short–term borrowings	846	723
Accounts payable
— third parties	1,854	1,418
— related parties	44	53
Fair value of derivative instruments	149	60
Accrued expenses and other current liabilities
— third parties	572	547
— related party	0	250
Deferred income tax liabilities	20	16
Liabilities held for sale	0	11
Total current liabilities	3,593	3,170
Long–term debt, net of current portion	4,349	4,359
Deferred income tax liabilities	261	425
Accrued postretirement benefits	748	621
Other long–term liabilities	221	271
Total liabilities	9,172	8,846
Commitments and contingencies
Shareholder’s (deficit) equity
Common stock, no par value; unlimited number of shares authorized; 1,000 shares issued and outstanding as of March 31, 2015 and 2014	0	0
Additional paid–in capital	1,404	1,404
Accumulated deficit	(925)	(1,073)
Accumulated other comprehensive loss	(561)	(91)	(268)	(191)
Total (deficit) equity of our common shareholder	(82)	240
Noncontrolling interests	12	28
Total (deficit) equity	(70)	268	239	123
Total liabilities and (deficit) equity	$ 9,102	$ 9,114