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Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Significant Noncash Transactions [Line Items]
Interest (Net of Amounts Capitalized)	$ 123,466	$ 141,992	$ 143,111
Income Taxes	0	(118,125)	(138,409)
Notes Received from Property Sales
Other Significant Noncash Transactions [Line Items]
Capital expenditures incurred, not yet paid	$ 35,592	$ 30,982	$ 43,982

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