Fair value measurements - Schedule of Fair Value, by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Fair value, balance sheet grouping [Line Items]
Long-term debt	$ 2,193,676	$ 2,292,610	$ 2,254,397
Carrying amount
Fair value, balance sheet grouping [Line Items]
Long-term debt	2,193,676	2,292,610	2,254,397
Fair value
Fair value, balance sheet grouping [Line Items]
Long-term debt, fair value	$ 1,902,217	$ 1,963,396	$ 1,966,002

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant