Summary of significant accounting policies - Cloud computing arrangements (Details) $ in Millions	Dec. 31, 2023 USD ($)
Other Current Assets
Finite-Lived Intangible Assets [Line Items]
Capitalized computer cost	$ 1.9
Other Assets
Finite-Lived Intangible Assets [Line Items]
Capitalized computer cost	$ 10.9

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483154/926-20-50-5

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Balance Type:	na
Period Type:	duration