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Supplemental Cash Flow Information (Tables)
12 Months Ended
Dec. 31, 2020
Supplemental Cash Flow Information [Abstract]  
Net Cash Paid For Interest and Income Taxes
Net cash paid (received) for interest and income taxes was as follows for the years ended December 31, 2020, 2019 and 2018 (in thousands):
 202020192018
Interest, Net of Capitalized Interest$205,447 $186,546 $243,279 
Income Taxes, Net of Refunds Received$(205,795)$(291,849)$75,634