v2.4.0.6
Derivatives Pretax Amounts Affecting Income and Other Comprehensive Income (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Derivatives in Fair Value Hedging Relationships | Interest rate
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Income on Derivative $ (11.1) $ 7.0
Hedged Items in Fair Value Hedge Relationships Fixed-rate debt Fixed-rate debt
Gain (Loss) Recognized in Income on Related Hedged Items 11.1 (7.0)
Derivatives in Cash Flow Hedging Relationships
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) (19.1) 11.2
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) 2.9 14.3
Gain (Loss) Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing and Ineffective Portion) (7.7) (24.8)
Derivatives in Cash Flow Hedging Relationships | Interest rate
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) (14.0) [1]  
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) (2.2) [1] 0.9 [1]
Gain (Loss) Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing and Ineffective Portion)   0.3 [1]
Derivatives in Cash Flow Hedging Relationships | Foreign currency
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) (5.1) 11.2
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) 5.1 13.4
Gain (Loss) Recognized in Income on Derivative (Amount Excluded from Effectiveness Testing and Ineffective Portion) (7.7) (25.1)
Net Investment Hedging Relationships
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) (140.2) (148.6)
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) (8.2)  
Net Investment Hedging Relationships | Foreign currency derivatives
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) (9.4) [2] (4.3) [2]
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) (8.2) [2]  
Net Investment Hedging Relationships | Foreign currency denominated debt
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion) (130.8) (144.3)
Derivatives Not Designated as Hedging Instruments
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Income on Derivative 36.2 35.2
Derivatives Not Designated as Hedging Instruments | Interest rate
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Income on Derivative 1.5  
Derivatives Not Designated as Hedging Instruments | Foreign currency derivatives
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Income on Derivative (2.2) 16.4
Derivatives Not Designated as Hedging Instruments | Equity
    
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) Recognized in Income on Derivative $ 36.9 [3] $ 18.8 [3]
[1] The amount of gain (loss) reclassified from accumulated OCI into income is recorded in Interest expense.
[2] The amount of gain (loss) reclassified from accumulated OCI into income is recorded in Impairment and other charges (credits), net
[3] The amount of gain (loss) recognized in income on the derivatives used to hedge the supplemental benefit plan liabilities is recorded in Selling, general & administrative expenses.