Quarterly Results (Unaudited) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 2,621	$ 2,313	$ 2,361	$ 2,296	$ 2,402	$ 2,354	$ 2,482	$ 2,634	$ 9,591	$ 9,872	$ 11,147
Cost of goods sold (exclusive of depreciation and amortization)	2,182	1,924	1,980	1,930	2,035	2,051	2,241	2,400	8,016	8,727	9,793
Selling, general and administrative expenses	118	103	108	92	103	104	100	100	421	407	427
Depreciation and amortization	93	88	90	89	89	88	89	87	360	353	352
Research and development expenses	17	14	14	13	15	13	13	13	58	54	50
Loss on extinguishment of debt	(22)	0	(112)	0	0	0	0	13	(134)	(13)	0
Interest expense and amortization of debt issuance costs	63	67	81	83	83	82	82	80	294	327	326
(Gain) loss on assets held for sale	0	0	(1)	(1)
Restructuring and impairment, net	6	1	1	2	19	10	4	15	10	48	37
Equity in net loss of non-consolidated affiliates	0	8	0	0	1	0	1	1	8	3	5
Other (income) expense, net	32	(3)	38	28	10	(16)	(32)	(30)	95	(68)	17
Income tax provision	41	47	27	36	18	16	(3)	15	151	46	14
Net income (loss)	47	64	(89)	24	29	6	(13)	(60)	46	(38)	148
Net income attributable to noncontrolling interests	0	1	0	0	0	0	0	0	1	0	0
Net income (loss) attributable to our common shareholder	$ 47	$ 63	$ (89)	$ 24	$ 29	$ 6	$ (13)	$ (60)	$ 45	$ (38)	$ 148