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Contingencies And Commitments (Environmental Matters) (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  | 12 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2012 | Dec. 31, 2011 | Jun. 30, 2003 Massena West, NY [Member] | Nov. 30, 2008 Grasse River [Member] | Mar. 31, 2012 Grasse River [Member] | Dec. 31, 2010 Grasse River [Member] | Mar. 24, 2010 Grasse River [Member] | Dec. 31, 2005 East St. Louis, IL [Member] | Dec. 31, 2009 Fusina [Member] | Dec. 31, 2009 Portovesme [Member] | Mar. 31, 2012 Other Sites [Member] | Mar. 31, 2012 Recurring Costs Of Managing Hazardous Substances And Environmental Programs [Member] | Mar. 31, 2012 Maximum [Member] | Mar. 31, 2012 Minimum [Member]
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of cleanup locations | more than 100 |  |  |  |  |  |  |  |  |  |  |  |  |
Remediation reserve balance | $ 344 | $ 347 |  |  |  |  |  |  |  |  |  |  |  |
Remediation reserve balance, classified as a current liability | 56 | 58 |  |  |  |  |  |  |  |  |  |  |  |
Remediation reserve increase |  |  |  | 40 | 1 | 2 |  | 15 | 12 | 3 | 2 |  |  |
Remediation reserve adjustment |  |  |  |  |  |  | 17 |  |  |  |  |  |  |
Period of time between potential phenomenon occurrences, years |  |  | 10 |  |  |  |  |  |  |  |  |  |  |
Payments related to remediation expenses applied against the reserve | 6 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of cost of goods sold |  |  |  |  |  |  |  |  |  |  |  | 2.00% |  |
Recommended capping remedy range |  |  |  |  |  |  |  |  |  |  |  |  | 100 | 20
Increase in reserves due to effects of foreign currency translation | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |

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