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FINANCING ARRANGEMENTS (Details)
3 Months Ended 9 Months Ended
Aug. 23, 2013
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
Sep. 30, 2017
USD ($)
Sep. 30, 2016
Apr. 26, 2017
USD ($)
Dec. 31, 2016
USD ($)
Jun. 30, 2016
Debt Instrument [Line Items]                
Long-term debt, fair value   $ 537,400,000   $ 537,400,000        
Receivables Securitization Facility | The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch and Wells Fargo Bank, National Association | Secured Debt                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity           $ 250,000,000.0    
Borrowing outstanding   250,000,000   250,000,000        
Unsecured Debt | Senior Unsecured Revolving Credit Facility 2019 Term Loan                
Debt Instrument [Line Items]                
Line of credit facility, maximum borrowing capacity   900,000,000   900,000,000        
Borrowing availability   $ 181,000,000   $ 181,000,000        
Debt instrument, interest rate during period   2.40% 1.40% 2.20% 1.50%      
Debt, weighted average interest rate   2.40%   2.40%       1.50%
Debt instrument, covenant, leverage ratio, maximum   3.00   3.00        
Unsecured Debt | Senior Unsecured Revolving Credit Facility 2019 Term Loan | Federal Funds Rate                
Debt Instrument [Line Items]                
Debt instrument, basis spread on variable rate       0.50%        
Unsecured Debt | Senior Unsecured Revolving Credit Facility 2019 Term Loan | London Interbank Offered Rate (LIBOR)                
Debt Instrument [Line Items]                
Debt instrument, basis spread on variable rate       1.13%        
Unsecured Debt | Senior Unsecured Revolving Credit Facility 2019 Term Loan | Current Liability                
Debt Instrument [Line Items]                
Borrowing outstanding   $ 719,000,000   $ 719,000,000     $ 740,000,000  
Senior Notes | Series A Notes                
Debt Instrument [Line Items]                
Debt instrument, face amount $ 175,000,000              
Debt instrument, interest rate, stated percentage 3.97%              
Senior Notes | Series B Notes                
Debt Instrument [Line Items]                
Debt instrument, face amount $ 150,000,000              
Debt instrument, interest rate, stated percentage 4.26%              
Senior Notes | Series C Notes                
Debt Instrument [Line Items]                
Debt instrument, face amount $ 175,000,000              
Debt instrument, interest rate, stated percentage 4.60%              
Senior Notes | Note Purchase Agreement                
Debt Instrument [Line Items]                
Debt instrument, covenant, leverage ratio, maximum   3.00   3.00        
Debt instrument, covenant, interest expense ratio, maximum       2.00        
Debt instrument, covenant, priority debt, percentage       15.00%        
Debt instrument, redemption price, percentage 100.00%              
Line of Credit | Receivables Securitization Facility | London Interbank Offered Rate (LIBOR) | The Bank of Tokyo-Mitsubishi UFJ, Ltd., New York Branch and Wells Fargo Bank, National Association | Secured Debt                
Debt Instrument [Line Items]                
Debt instrument, basis spread on variable rate   1.97%   1.88%