XML 125 R105.htm IDEA: XBRL DOCUMENT v2.4.0.6
Gains And Losses On Foreign Currency (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Gains And Losses On Foreign Currency [Abstract]      
Net loss on transactions conducted in a foreign currency $ 2 $ 2 $ 8