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STATEMENTS OF CASH FLOWS Table 2 - Cash Flows Related to Interest and Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Supplemental Cash Flow Information [Abstract]      
Cash paid for interest, net of amount capitalized $ 176,859 $ 183,078 $ 158,089
Cash paid for income taxes, net of tax refunds received $ 6,817 $ 8,535 $ 11,338