Cash flow information (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Interest, net*	$ 54,616	$ 39,573
Income taxes paid, net**	17,542	50
AFUDC borrowed	4,900	1,300
Right-of-use assets obtained in exchange for new operating lease liabilities	24,201	14,148	$ 39,158
Property, plant and equipment additions in accounts payable	37,076	40,510	$ 35,637
Continuing and discontinued operations
Income taxes paid, net**	$ 18,300	$ 16,500