v3.26.1
Short-term Borrowings - Additional Information (Details)
¥ in Thousands
12 Months Ended
Mar. 12, 2026
USD ($)
Oct. 28, 2025
USD ($)
Oct. 28, 2025
CNY (¥)
Mar. 31, 2025
USD ($)
Mar. 10, 2025
USD ($)
Mar. 09, 2025
Dec. 31, 2025
USD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2025
CNY (¥)
Nov. 28, 2025
Nov. 24, 2025
May 27, 2024
USD ($)
May 27, 2024
CNY (¥)
Oct. 31, 2020
USD ($)
Oct. 31, 2020
CNY (¥)
Short-Term Debt [Line Items]                                
Debt instrument, term             1 year 1 year                
Weighted average interest rates for the outstanding short-term bank borrowings             2.72%   3.42% 2.72%            
Short-term borrowings             $ 6,402,231   $ 8,811,599              
Outstanding principal amount         $ 2,260,000                 ¥ 16,130    
Aggregate principal amount             1,400,000                  
Outstanding borrowings amount under facility             1,400,000   1,400,000              
Effective interest rate                       3.91%        
Percentage of accrued interest on overdue principal amount         12.00%                      
Restricted cash             2,522,898                  
Bank of China Beijing Guomao Sub-branch | Subsequent Event                                
Short-Term Debt [Line Items]                                
Debt instrument, term 1 year                              
Short-term borrowings $ 1,400,000                              
Borrowings annual interest rate 2.24%                              
China Merchants Bank Beijing Dayuncun Sub-branch                                
Short-Term Debt [Line Items]                                
Short-term borrowings       $ 1,400,000                        
Borrowings maturity date       Dec. 18, 2026                        
Borrowings annual interest rate       2.30%                        
X-Charge Technology                                
Short-Term Debt [Line Items]                                
Effective interest rate                     3.50%          
Percentage of accrued interest on overdue principal amount           12.00%                    
Repayment of outstanding principal and interest   $ 2,330,000 ¥ 16,710                          
Provision             2,500,000 ¥ 17,600                
Restricted cash             2,400,000     ¥ 16,900            
X-Charge Technology | Investor C                                
Short-Term Debt [Line Items]                                
Short-term borrowings                         $ 2,100,000 ¥ 15,000    
Short-term Bank Borrowings from SPD Silicon Valley Bank                                
Short-Term Debt [Line Items]                                
Short-term borrowings                             $ 1,400,000 ¥ 10,000
Short-Term Bank Borrowings and Loan                                
Short-Term Debt [Line Items]                                
Short-term borrowings             4,268,154   6,724,904              
Short-Term Bank Borrowings and Loan | Bank of China Beijing Guomao Sub-branch                                
Short-Term Debt [Line Items]                                
Short-term borrowings             1,422,718   1,391,130              
Short-Term Bank Borrowings and Loan | China Merchants Bank Beijing Dayuncun Sub-branch                                
Short-Term Debt [Line Items]                                
Short-term borrowings             $ 1,422,718   $ 1,855,949