Quarterly Results (Unaudited)

12 Months Ended

Mar. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Quarterly Results (Unaudited)

QUARTERLY RESULTS (UNAUDITED)

The tables below present select operating results (in millions) by period:

	(Unaudited) Quarter Ended
	June 30, 2014			September 30, 2014			December 31, 2014			March 31, 2015
Net sales	$	2,680		$	2,831		$	2,847		$	2,789
Cost of goods sold (exclusive of depreciation and amortization)	2,329			2,483			2,498			2,483
Selling, general and administrative expenses	108			103			108			108
Depreciation and amortization	89			90			87			86
Research and development expenses	12			12			14			12
Interest expense and amortization of debt issuance costs	81			82			85			78
(Gain) loss on assets held for sale, net	(11		)	—			(12		)	1
Restructuring and impairment, net	6			7			25			(1		)
Equity in net loss of non-consolidated affiliates	2			—			2			1
Other expense (income), net	5			18			(9		)	3
Income tax provision (benefit)	24			(2		)	3			(11		)
Net income	35			38			46			29
Net income attributable to noncontrolling interests	—			—			—			—
Net income attributable to our common shareholder	$	35		$	38		$	46		$	29

	(Unaudited) Quarter Ended
	June 30, 2013			September 30, 2013			December 31, 2013			March 31, 2014
Net sales	$	2,401		$	2,414		$	2,403		$	2,549
Cost of goods sold (exclusive of depreciation and amortization)	2,098			2,074			2,093			2,203
Selling, general and administrative expenses	120			109			115			117
Depreciation and amortization	77			79			91			87
Research and development expenses	10			12			12			11
Interest expense and amortization of debt issuance costs	76			75			76			77
Gain on assets held for sale	—			—			(6		)	—
Restructuring and impairment, net	9			18			19			29
Equity in net loss of non-consolidated affiliates	4			3			5			—
Other income, net	(10		)	(5		)	(12		)	(14		)
Income tax provision (benefit)	3			26			(3		)	(15		)
Net income	14			23			13			54
Net income attributable to noncontrolling interests	—			—			—			—
Net income attributable to our common shareholder	$	14		$	23		$	13		$	54