v3.26.1
Organization and Nature of Operations - Additional Information (Detail)
¥ in Thousands, $ in Thousands
1 Months Ended 12 Months Ended
Jul. 31, 2021
HKD ($)
Dec. 31, 2020
CNY (¥)
Aug. 31, 2020
CNY (¥)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
HKD ($)
Dec. 31, 2023
CNY (¥)
Jul. 22, 2022
Sep. 10, 2021
Sep. 06, 2021
Aug. 12, 2021
Jun. 23, 2021
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Net Income (Loss)       ¥ (1,139,460) ¥ (5,790,264)   ¥ (10,375,775)          
Accumulated deficit       (42,767,710) (41,585,549)              
Cash from operations       8,258,529 (2,012,343)   ¥ 956,164          
Cash, cash equivalents, and short-term investments       17,329,612 18,586,274              
Cash and cash equivalents       17,329,612 ¥ 18,586,274              
Xintu Technology [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Equity interest acquired, percentage                       100.00%
Kuntu Technology [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Equity interest acquired, percentage                     100.00%  
Xiaopeng Technology [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Equity interest acquired, percentage                   50.00%    
Xiaopeng Smart Mobility [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Equity interest acquired, percentage                 50.00%      
Global Offering on HKEX [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Proceeds From Global Public Offering After Deducting Underwriting Discounts And Commissions | $ $ 15,823,315                      
Proceeds from Sale and Maturity of Other Investments | $           $ 5,019,599            
Guangzhou Xuetao [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Equity interest acquired, percentage               100.00%        
IPO [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Proceeds from initial public offering, net of issuance costs     ¥ 11,409,248                  
Public Offering [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Proceeds from FO, net of issurance cost   ¥ 15,980,227                    
Unsecured Debt [Member]                        
Organization Consolidation And Presentation Of Financial Statements [Line Items]                        
Cash, cash equivalents, and short-term investments       55,637                
Cash and cash equivalents       ¥ 41,868,659