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Cash flow information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest, net*	$ 91,165	$ 88,681	$ 93,414
Income taxes paid (refunded), net**	71,079	65,536	(8,475)
AFUDC borrowed	2,800	2,600	2,800
Property, plant and equipment additions in accounts payable	57,605	26,082	46,119
Right-of-use assets obtained in exchange for new operating lease liabilities	55,987	54,356	54,880
Debt assumed in connection with a business combination	10	0	1,163
Accrual for holdback payment related to a business combination	0	2,500	0
Continuing and discontinued operations
Income taxes paid (refunded), net**	$ 70,900	$ 59,400	$ (9,400)

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Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

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