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Gains And Losses On Foreign Currency	12 Months Ended
	Dec. 31, 2011
Gains And Losses On Foreign Currency [Abstract]
Gains And Losses On Foreign Currency	21. Gains and Losses on Foreign Currency Transactions conducted in a foreign currency resulted in a net loss of $2 million in 2011, as well as 2010, and $8 million in 2009. These amounts are reported in cost of sales.

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- Definition

The entire disclosure for foreign currency transactions and translation. This may include description of foreign currency transactions, foreign currency gains and losses, explanation of change in cumulative translation adjustment, description of effect of subsequent foreign currency exchange rate change, cumulative translation adjustment movement, foreign currency translation adjustment by component movement, translation adjustment for net investment hedge movement, adjustment for long-term intercompany transactions, schedule of long-term intercompany balances and any other foreign currency transactions and translation related items.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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