Segment, Major Customer and Major Supplier Information (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Reconciliation of income from reportable segments to net income attributable to common shareholder
Depreciation and amortization	$ (89)	$ (77)
Interest expense and amortization of debt issuance costs	(81)	(76)
Adjustment to eliminate proportional consolidation	(8)	(11)
Unrealized gains (losses) on change in fair value of derivative instruments, net	1	(12)
Realized (losses) gains on derivative instruments not included in segment income	(1)	2
Gain on assets held for sale	(11)	0
Restructuring and impairment, net	(6)	(9)
Other costs, net	(3)	(4)
Income (loss) before income taxes	59	17
Income tax (benefit) provision	24	3
Net income	35	14
Net income attributable to noncontrolling interests	0	0
Net income (loss) attributable to our common shareholder	35	14
North America [Member]
Reconciliation of income from reportable segments to net income attributable to common shareholder
Gross profit	64	46
Europe [Member]
Reconciliation of income from reportable segments to net income attributable to common shareholder
Gross profit	79	70
Asia [Member]
Reconciliation of income from reportable segments to net income attributable to common shareholder
Gross profit	37	46
South America [Member]
Reconciliation of income from reportable segments to net income attributable to common shareholder
Gross profit	$ 55	$ 42