v2.4.0.8
Fair Value Measurements (Schedule Of Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Supplemental executive retirement plan assets $ 42.4 $ 37.7
Derivatives, net 17.0 1.8
Total financial assets 59.4 39.5
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Supplemental executive retirement plan assets 42.4 37.7
Derivatives, net 0 0
Total financial assets 42.4 37.7
Significant Other Observable Inputs (Level 2) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Supplemental executive retirement plan assets 0 0
Derivatives, net 17.0 1.8
Total financial assets 17.0 1.8
Significant Unobservable Inputs (Level 3) [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Supplemental executive retirement plan assets 0 0
Derivatives, net 0 0
Total financial assets $ 0 $ 0