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Supplemental Cash Flow Information (Tables)
6 Months Ended
Jun. 30, 2019
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 six-month periods ended June 30, 2019 and 2018 (in thousands):
 
Six Months Ended 
 June 30,
 
2019
 
2018
Interest (1)
$
108,994

 
$
133,148

Income Taxes, Net of Refunds Received
$
(331,778
)
 
$
62,777

 
(1)
Net of capitalized interest of $18 million and $11 million for the six months ended June 30, 2019 and 2018, respectively.