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SUPPLEMENTAL CASH FLOW INFORMATION - Summary (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Supplemental Cash Flow Information [Abstract]      
Income taxes paid, net of refunds $ 146,739 $ 101,302 $ 97,002
Interest paid $ 206,562 $ 177,525 $ 154,200