Reconciliation of Segment EBITDA to Consolidated Net Income (Loss) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting [Abstract]
Segment EBITDA									$ 745	$ 749	$ 788
Corporate expense and other items, net									1	(2)	(11)
Expenses previously allocated to Structures											(1)
Depreciation									(164)	(175)	(188)
Amortization of intangibles									(49)	(87)	(87)
Restructuring									(21)	(24)	(47)
Stock compensation expense									(16)	(16)	(17)
Strategic transaction expenses and other items									6	(4)	(7)
Loss on disposal group held for sale	(80)								(80)
Pension settlement charges	(42)								(42)
Loss on extinguishment of debt	(19)								(19)
Write-off of deferred financing costs									(4)	(4)
Recognition of unrealized gain on payment-in-kind note receivable									2	5
Impairment and loss on sale of assets											(6)
Interest expense									(118)	(99)	(84)
Interest income									15	25	24
Income from continuing operations before income taxes									260	368	364
Income tax expense (benefit)									(70)	119	51
Equity in earnings of affiliates									13	12	2
Income from continuing operations									343	261	315
Loss from discontinued operations									(15)	(1)	0
Net income	$ 108	$ 93	$ 90	$ 37	$ 43	$ 71	$ 96	$ 50	$ 328	$ 260	$ 315