Cash flow information (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Interest, net*	$ 84,352	$ 55,954
Income taxes paid (refunded), net**	40,290	(5,499)
AFUDC borrowed	7,400	2,400
Right-of-use assets obtained in exchange for new operating lease liabilities	36,307	30,641	$ 39,158
Property, plant and equipment additions in accounts payable	37,598	39,393	$ 35,637
Continuing and discontinued operations
Income taxes paid (refunded), net**	$ 39,400	$ 17,700