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Statements of Cash Flows
9 Months Ended
Sep. 30, 2020
Supplemental Cash Flow Elements [Abstract]  
Statements of Cash Flows Statements of Cash Flows    Interest payments were $126,932,000 and $145,930,000 for the nine months ended September 30, 2020 and 2019, respectively. Income taxes paid were $96,000,000 and $127,282,000 for the nine months ended September 30, 2020 and 2019, respectively.