Segment Information (Reconciliation Of Segment Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting [Abstract]
Segment income of reportable segments	$ 267	$ 285	$ 691	$ 740
Segment income of non-reportable segments	59	62	166	174
Corporate and unallocated items	(49)	(47)	(149)	(153)
Provision for restructuring	(7)	(2)	(10)	(27)
Asset impairments and sales	14	2	24	2
Loss from early extinguishments of debt	0	0	0	(32)
Interest expense	(57)	(58)	(170)	(174)
Interest income	2	2	5	8
Translation and foreign exchange	2	1	4	0
Income before income taxes and equity earnings	231	245	561	538
Intercompany profit related to non-reportable segments		$ 2	$ 1	$ 4