Subsequent events (Details) - Performance stock units - shares		12 Months Ended
	Feb. 20, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Subsequent events (Details) [Line Items]
Issuance of shares in connection with vested RSUs (in shares)		1,335,982	112,085	2,787,001
Subsequent Event
Subsequent events (Details) [Line Items]
Shares withheld for tax obligations (in shares)	400,000
Issuance of shares in connection with vested RSUs (in shares)	800,000