Segments - Reconciliation of Segment EBITDA to Consolidated Net Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting [Abstract]
Segment EBITDA	$ 160	$ 159
Corporate expense and other items, net	5	(1)
Depreciation	(40)	(42)
Amortization of intangibles	(15)	(22)
Restructuring	(9)	(2)
Strategic transaction expenses and other items	(1)	(2)
Recognition of unrealized gain on payment-in-kind note receivable	2
Stock compensation expense	(4)	(5)
Interest expense	(30)	(21)
Interest income	3	7
Income from continuing operations before income taxes	71	71
Income tax expense	34	27
Equity in earnings of affiliates	1	4
Income from continuing operations	38	48
Income (loss) from discontinued operations	(1)	2
Net income	$ 37	$ 50