Segment financial information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2024
Segment Reporting [Abstract]
Impairment charges	$ 35.2	$ 35.2
Accrued interest		$ 9.6

Amount of writeoff of financing receivable, charged against allowance for credit loss.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration