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Acquisitions - Consideration (Details) - Sep. 15, 2025 - Shenzhen UZ Energy Co. Ltd. ¥ in Millions, $ in Millions | CNY (¥) | USD ($)
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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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