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Financial Instruments (Schedule Of Location And Amounts Of Gains And Losses On Derivative Instruments Designated As Cash Flow Hedges) (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]    
Tax effect of amount reclassified from accumulated other comprehensive loss to income $ 0.2 $ 0.6