Related party transactions - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Revenue	$ 28.0	$ 18.3
Accounts receivable (net of allowance for credit losses of $nil)	12.1	1.0
Fade In Production Pty.
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	0.0	0.1
Related Party
Related Party Transaction [Line Items]
Accounts receivable (net of allowance for credit losses of $nil)	0.2	0.2
Related Party | Glencore
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	0.1	0.3
Related Party | Consulero Inc.
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction	0.1	0.1
Product revenue
Related Party Transaction [Line Items]
Revenue	16.1	12.6
Product revenue | Related Party
Related Party Transaction [Line Items]
Revenue	$ 1.5	$ 1.4