Reconciliation of Segment EBITDA to Consolidated Net Income (Loss) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment EBITDA									$ 788	$ 785	$ 589
Corporate expense and other items, net									(11)	(21)	(42)
Expenses previously allocated to Structures									(1)	(1)	(4)
Depreciation									(188)	(212)	(232)
Amortization of intangibles									(87)	(90)	(76)
Restructuring									(47)	(82)	(74)
Loss on extinguishment of debt								(53)		(53)	(7)
Gain on sale of equity investment						60				60
Strategic transaction and other expenses									(9)	(12)	(5)
Impairment and loss on sale of assets									(6)	(7)	(3)
Stock compensation expense									(17)	(8)	(14)
Foreign exchange on intercompany loans and market value adjustments on forwards									2	(1)	(18)
Interest expense									(84)	(79)	(89)
Interest income									24	27	30
Income from continuing operations before income taxes									364	306	55
Income tax expense									51	87	30
Equity in earnings of affiliates									2	21	11
Income from continuing operations									315	240	36
Loss from discontinued operations										(8)	(21)
Net income	$ 93	$ 60	$ 89	$ 73	$ 75	$ 112	$ 70	$ (25)	$ 315	$ 232	$ 15