XML 81 R70.htm IDEA: XBRL DOCUMENT v3.19.1
Debt and Credit Facilities 5.375% Senior Notes due 2020 (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2018
Jan. 31, 2017
Sep. 30, 2018
Mar. 31, 2019
Mar. 31, 2018
Jan. 09, 2017
Oct. 22, 2012
Aug. 14, 2012
Debt Instrument [Line Items]                
Debt Instrument, Face Amount $ 2,437,000   $ 2,437,000 $ 2,137,000        
Document Period End Date       Mar. 31, 2019        
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities       $ 300,000 $ 331,172      
Loss on extinguishment of debt       910 $ 0      
5.375% Senior Notes due August 15, 2020                
Debt Instrument [Line Items]                
Debt Instrument, Face Amount 300,000   300,000     $ 450,000    
Senior Notes, Noncurrent $ 298,759   $ 298,759 $ 0     $ 350,000 $ 700,000
Debt Instrument, Interest Rate, Stated Percentage 5.375%   5.375% 5.375%       5.375%
Unamortized Debt Issuance Expense $ 1,241   $ 1,241 $ 0        
Repayments of Debt $ 150,000 $ 600,000            
Loss on extinguishment of debt   $ (18,600) $ (300)