XML 64 R50.htm IDEA: XBRL DOCUMENT v3.10.0.1
Fair Value Measurements (Schedule Of Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Supplemental executive retirement plan assets $ 27.2 $ 30.9
Total financial assets 27.2 37.7
Derivative Assets (Liabilities), at Fair Value, Net (10.7) 6.8
Total Financial Liabilities (10.7)  
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Supplemental executive retirement plan assets 27.2 30.9
Total financial assets 27.2 30.9
Derivative Assets (Liabilities), at Fair Value, Net 0.0 0.0
Total Financial Liabilities 0.0  
Significant Other Observable Inputs (Level 2) [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Supplemental executive retirement plan assets 0.0 0.0
Total financial assets 0.0 6.8
Derivative Assets (Liabilities), at Fair Value, Net (10.7) 6.8
Total Financial Liabilities (10.7)  
Significant Unobservable Inputs (Level 3) [Member]    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Supplemental executive retirement plan assets 0.0 0.0
Total financial assets 0.0 0.0
Derivative Assets (Liabilities), at Fair Value, Net 0.0 $ 0.0
Total Financial Liabilities $ 0.0