Amount of loss contingency liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349

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

Commitments and contingencies (Details) - USD ($)	3 Months Ended
Commitments and contingencies (Details) - USD ($)	Jun. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Material liabilities for contingencies		$ 0	$ 0
Unrelated Party
Loss Contingencies [Line Items]
Contractual obligation for hosting services	$ 100,000,000
Contractual obligation, period	3 years