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.

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Name:	us-gaap_SubsidiarySaleOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Weichai Transactions (Details) - USD ($) $ in Millions		3 Months Ended
Weichai Transactions (Details) - USD ($) $ in Millions	Mar. 22, 2023	Mar. 31, 2026	Mar. 31, 2025
Subsidiary, Sale of Stock [Line Items]
Term of collaborative arrangement (in years)	3 years
Related Party
Subsidiary, Sale of Stock [Line Items]
Purchased inventory		$ 3.9	$ 11.5