v3.25.1
Segment reporting - Revenue by geographic area based on the location of the customer (Details)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues ¥ 75,912,651 $ 10,399,991 ¥ 51,672,618 ¥ 31,899,448
Vehicle        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 55,315,306 7,578,166 33,911,762 19,671,247
Batteries and other components        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 16,793,818 2,300,744 14,692,617 10,317,822
Research and development and others        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 3,803,527 $ 521,081 3,068,239 1,910,379
China        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 66,498,993   45,975,347 28,848,370
China | Vehicle        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 52,035,381   32,889,346 19,671,247
China | Batteries and other components        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 11,166,201   10,388,319 7,463,851
China | Research and development and others        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 3,297,411   2,697,682 1,713,272
Europe        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 6,781,983   4,607,023 2,803,567
Europe | Vehicle        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 729,442   44,315  
Europe | Batteries and other components        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 5,581,185   4,194,542 2,759,550
Europe | Research and development and others        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 471,356   368,166 44,017
Other        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 2,631,675   1,090,248 247,511
Other | Vehicle        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 2,550,483   978,101  
Other | Batteries and other components        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 46,432   109,756 94,421
Other | Research and development and others        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues ¥ 34,760   ¥ 2,391 ¥ 153,090