Other Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net (increase) decrease in operating working capital, excluding cash and cash equivalents:
(Increase) decrease in accounts receivable	$ (13,174)	$ (3,976)
(Increase) decrease in inventories	4,860	(9,296)
Decrease in prepaid expenses	5,110	3,813
Increase (decrease) in accounts payable and accrued liabilities	(24,852)	(63,800)
Increase (decrease) in income taxes payable	3,703	(1,772)
Net increase in noncash working capital	(24,353)	(75,031)
Supplementary disclosures:
Cash income taxes paid, net of refunds	405	3,342
Interest paid, net of amounts capitalized of $3.9 million in 2024 and $3.3 million in 2023	11,062	19,358
Non-cash investing activities:
Asset retirement costs capitalized	10,955	2,396
(Increase) decrease in capital expenditure accrual	(12,948)	15,973
Interest paid, amount capitalized	$ 3,900	$ 3,300