v3.25.2
Organization and Nature of Operations - IPO, VIEs, Liquidity and Going Concern (Details)
¥ in Thousands, $ in Thousands
 1 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2025
CNY (¥)
Jun. 30, 2025
CNY (¥)
shares
Jun. 30, 2025
USD ($)
shares
Jun. 30, 2024
CNY (¥)
Dec. 31, 2024
CNY (¥)
shares
Jun. 30, 2025
USD ($)
Dec. 31, 2023
CNY (¥)
Organization and Nature of Operations              
Net loss   ¥ 11,744,834 $ 1,639,515 ¥ 10,230,560      
Operating cash outflow   10,926,443 $ 1,525,273 10,027,770      
Accumulated deficit   (124,800,000)     ¥ (113,068,210) $ (17,422,485)  
Net current liabilities   9,800,000          
Total shareholders' deficit   1,118,897   ¥ (16,254,890) (6,064,546) 156,191 ¥ (25,735,632)
Cash, cash equivalents, short term investments and long term deposits   27,100,000          
Trade and notes payable   34,951,395     ¥ 34,387,266 $ 4,879,027  
Other Liabilities   17,300,000          
Outstanding borrowings   ¥ 6,200,000          
Subsequent event | NIO Holding Co., Ltd.              
Organization and Nature of Operations              
Percentage held of its equity interests 91.80%            
NIO Holding Co., Ltd.              
Organization and Nature of Operations              
Percentage of interest in total paid-in capital   89.02%     89.02% 89.02%  
Equity interest held   100.00%     100.00% 100.00%  
NIO Holding Co., Ltd. | Subsequent event              
Organization and Nature of Operations              
Additional investments made ¥ 20,000,000            
NIO Energy Investment (Hubei) Co., Ltd. ("PE CNHC")              
Organization and Nature of Operations              
Percentage of interest in total paid-in capital   90.91%       90.91%  
Equity interest held   100.00%       100.00%  
Percentage of indirect interest in total paid-in capital   90.91% 90.91%        
Prime Hubs              
Organization and Nature of Operations              
Number of share held by variable interest entities | shares   3,250,002 3,250,002   3,250,002