XML 83 R72.htm IDEA: XBRL DOCUMENT v3.20.2
Long-term debt outstanding (Details 1) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Long-term debt outstanding [Line Items]      
Long-term debt $ 2,270,290 $ 2,243,107 $ 2,246,756
Long-term debt due within one year 1,558 16,540 65,810
Long-term debt $ 2,268,732 2,226,567 2,180,946
Senior Notes      
Long-term debt outstanding [Line Items]      
Weighted Average Interest Rate 4.43%    
Long-term debt $ 1,900,000 1,850,000 1,655,000
Commercial Paper      
Long-term debt outstanding [Line Items]      
Weighted Average Interest Rate 0.44%    
Long-term debt $ 214,150 222,900 281,800
Term Loan Agreements      
Long-term debt outstanding [Line Items]      
Weighted Average Interest Rate 2.00%    
Long-term debt $ 8,400 9,100 209,100
Credit Agreements      
Long-term debt outstanding [Line Items]      
Weighted Average Interest Rate 2.40%    
Long-term debt $ 91,000 89,050 31,000
Medium-term Notes      
Long-term debt outstanding [Line Items]      
Weighted Average Interest Rate 7.32%    
Long-term debt $ 35,000 50,000 50,000
Other Notes      
Long-term debt outstanding [Line Items]      
Weighted Average Interest Rate 4.60%    
Long-term debt $ 28,284 29,117 26,083
Long-term Debt      
Long-term debt outstanding [Line Items]      
Unamortized Debt Issuance Costs 6,526 7,010 6,074
Discount $ 18 $ 50 $ 153