XML 70 R57.htm IDEA: XBRL DOCUMENT v3.7.0.1
Debt - Long-term (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Total long-term debt $ 1,792.8 $ 1,801.2
Debt issuance cost (17.5) (9.7)
Less: debt maturing within one year 2.4 2.4
Total long-term debt, less current portion $ 1,790.4 1,798.8
Pollution control and industrial revenue bonds (less unamortized discounts of $0.2 and $0.2, respectively)    
Debt Instrument [Line Items]    
Maturity date, minimum 2021  
Maturity date, maximum 2032  
Unamortized discounts $ 0.2 0.2
Total long-term debt $ 51.6 51.6
Pollution control and industrial revenue bonds (less unamortized discounts of $0.2 and $0.2, respectively) | Minimum    
Debt Instrument [Line Items]    
Interest Rate Percentage 1.10%  
Pollution control and industrial revenue bonds (less unamortized discounts of $0.2 and $0.2, respectively) | Maximum    
Debt Instrument [Line Items]    
Interest Rate Percentage 6.50%  
Senior notes (less unamortized discount of $1.3 and $1.4, respectively)    
Debt Instrument [Line Items]    
Maturity date, minimum 2019  
Maturity date, maximum 2024  
Unamortized discounts $ 1.3 1.4
Total long-term debt $ 998.7 998.6
Senior notes (less unamortized discount of $1.3 and $1.4, respectively) | Minimum    
Debt Instrument [Line Items]    
Interest Rate Percentage 3.95%  
Senior notes (less unamortized discount of $1.3 and $1.4, respectively) | Maximum    
Debt Instrument [Line Items]    
Interest Rate Percentage 5.20%  
Term Loan Facility    
Debt Instrument [Line Items]    
Interest Rate Percentage 2.20%  
Maturity Date 2020  
Total long-term debt $ 750.0 750.0
Credit Facility    
Debt Instrument [Line Items]    
Interest Rate Percentage 3.40%  
Maturity Date 2019  
Total long-term debt [1] $ 0.0 0.0
Letters of credit outstanding amount 128.8  
Credit Agreement, available funds $ 1,247.3  
Foreign debt    
Debt Instrument [Line Items]    
Maturity date, minimum 2018  
Maturity date, maximum 2024  
Total long-term debt $ 10.0 $ 10.7
Foreign debt | Minimum    
Debt Instrument [Line Items]    
Interest Rate Percentage 0.00%  
Foreign debt | Maximum    
Debt Instrument [Line Items]    
Interest Rate Percentage 4.00%  
[1] Letters of credit outstanding under our Credit Facility totaled $128.8 million and available funds under this facility were $1,247.3 million at March 31, 2017.