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Fair Values of Derivative Instruments Included on the Consolidated Balance Sheet (Detail) (USD $)
In Millions
Jun. 30, 2011
Dec. 31, 2010
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value $ 208.3 [1] $ 193.2 [1]
Liability Derivatives Fair Value (15.8) [1] (8.7) [1]
Designated as Hedging Instrument
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value 62.3 80.1
Liability Derivatives Fair Value (3.6) (4.9)
Designated as Hedging Instrument | Foreign Exchange | Prepaid Expenses and Other Current Assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value 2.5 7.5
Designated as Hedging Instrument | Foreign Exchange | Miscellaneous other assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value 0.3  
Designated as Hedging Instrument | Foreign Exchange | Accrued Payroll and Other Liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives Fair Value (2.6) (4.6)
Designated as Hedging Instrument | Interest Rate | Prepaid Expenses and Other Current Assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value 3.0 0.5
Designated as Hedging Instrument | Interest Rate | Miscellaneous other assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value 56.5 72.1
Designated as Hedging Instrument | Interest Rate | Other long- term liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives Fair Value (1.0) (0.3)
Derivatives Not Designated as Hedging Instruments
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value 146.0 113.1
Liability Derivatives Fair Value (12.2) (3.8)
Derivatives Not Designated as Hedging Instruments | Foreign Exchange | Prepaid Expenses and Other Current Assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value 16.0 6.0
Derivatives Not Designated as Hedging Instruments | Foreign Exchange | Miscellaneous other assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value 2.7 2.7
Derivatives Not Designated as Hedging Instruments | Foreign Exchange | Accrued Payroll and Other Liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives Fair Value (12.2) (3.8)
Derivatives Not Designated as Hedging Instruments | Equity | Prepaid Expenses and Other Current Assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives Fair Value $ 127.3 $ 104.4
[1] The fair value of derivatives is presented on a gross basis. Accordingly, the 2010 total asset and liability fair values do not agree with the values provided in the Fair Value Measurements note because that disclosure reflects netting adjustments related to specific counterparties of $0.3 million.