v3.26.3
Short-term Borrowings - Additional Information (Details)
¥ in Thousands
3 Months Ended 6 Months Ended
Oct. 28, 2025
USD ($)
Oct. 28, 2025
CNY (¥)
Mar. 10, 2025
USD ($)
May 31, 2025
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
May 27, 2024
USD ($)
May 27, 2024
CNY (¥)
Oct. 31, 2020
USD ($)
Oct. 31, 2020
CNY (¥)
Short-Term Debt [Line Items]                      
Debt instrument, term         1 year            
Weighted average interest rates for the outstanding short-term bank borrowings         2.47%   2.72%        
Short-term borrowings         $ 8,105,997   $ 6,402,231        
Outstanding principal amount     $ 2,260,000           ¥ 16,130    
Percentage of accrued interest on overdue principal amount     12.00%                
Investor C                      
Short-Term Debt [Line Items]                      
Interest expense         130,072 $ 117,157          
Contractual interest         0 38,900          
Default interest         130,072 $ 78,257          
Accrued interest         514,100            
X-Charge Technology                      
Short-Term Debt [Line Items]                      
Repayment of outstanding principal and interest $ 2,330,000 ¥ 16,710                  
Percentage of accrued interest on overdue principal amount       12.00%              
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         $ 5,895,272   $ 4,268,154