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Statements of Cash Flow
9 Months Ended
Sep. 30, 2019
Supplemental Cash Flow Elements [Abstract]  
Statements of Cash Flow Statements of Cash FlowsInterest payments were $145,930,000 and $137,789,000 and income taxes paid were $127,282,000 and $173,000,000 for the nine months ended September 30, 2019 and 2018, respectively.