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Acquisitions - Consideration (Details) - Sep. 15, 2025 - Shenzhen UZ Energy Co. Ltd. ¥ in Millions, $ in Millions	CNY (¥)	USD ($)
Business Combination, Consideration Transferred [Abstract]
Business combination, consideration transferred	¥ 183.5	$ 25.8
Business combination, consideration transferred, purchase consideration	93.5	13.1
Business combination, consideration transferred, capital contribution for working capital requirements	90.0	12.6
Payments to acquire businesses, gross	23.5	3.3
Business combination, consideration transferred, liabilities incurred	¥ 70.0	$ 9.8

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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