Cash flow information - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Supplemental Cash Flow Information [Abstract]
Interest, net	$ 21,155	$ 21,362
Income taxes paid, net	(257)	7,972
AFUDC borrowed	2,700	2,400
Right-of-use assets obtained in exchange for new operating lease liabilities	12,735	13,201	$ 46,181
Property, plant and equipment additions in accounts payable	$ 32,972	$ 29,564	$ 46,622