Commitments And Contingencies (Environmental Matters) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended		9 Months Ended	3 Months Ended	1 Months Ended		3 Months Ended	12 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Recurring Costs of Managing Hazardous Substances and Environmental Programs [Member]	Sep. 30, 2011 Various Sites [Member]	Nov. 30, 2008 Grasse River [Member]	Jun. 30, 2003 Grasse River [Member]	Sep. 30, 2011 Grasse River [Member]	Dec. 31, 2010 Grasse River [Member]	Mar. 24, 2010 Grasse River [Member]	Dec. 31, 2005 East St. Louis Site [Member]	Dec. 31, 2009 Fusina Site [Member]	Dec. 31, 2009 Portovesme Site [Member]
Number of cleanup locations		more than 100
Remediation reserve balance	$ 327	$ 327	$ 333
Remediation reserve balance, classified as a current liability	34	34	31
Remediation reserve increase		6			2	40			2		15	12	3
Remediation reserve adjustment										17
Payments related to remediation expenses applied against the reserve	5	13
Percentage of cost of goods sold				2.00%
Recommended capping remedy, minimum								20
Recommended capping remedy, maximum								100
Translation adjustment functional to reporting currency	$ (2)	$ 1
Frequency of sediment erosion from winter river ice formation and breakup, in years							10