v3.25.2
Share-based Compensation - Nio Incentive Plans - Text and Options (Details)
$ / shares in Units, ¥ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2025
CNY (¥)
shares
Jun. 30, 2024
$ / shares
Jun. 30, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
$ / shares
shares
Number of Options Outstanding          
Outstanding, Beginning Balance | shares   52,060,649      
Exercised | shares   (1,326,807)      
Cancelled | shares   (10,530)      
Expired | shares   (153,729)      
Outstanding, Ending Balance | shares   50,569,583     52,060,649
Vested and expected to vest | shares 50,495,087        
Exercisable | shares 49,079,653        
Weighted Average Exercise Price, Options          
Outstanding, Beginning Balance | $ / shares $ 3.55        
Exercised | $ / shares 1.8        
Cancelled | $ / shares 43.19        
Expired | $ / shares 12.83        
Outstanding, Ending Balance | $ / shares 3.56       $ 3.55
Vested and expected to vest | $ / shares 3.56        
Exercisable | $ / shares $ 3.59        
Weighted Average Remaining Contractual Life, Outstanding, Options   2 years 21 days     2 years 7 months 6 days
Weighted Average Remaining Contractual Life, Options, Vested and expected to vest   2 years 25 days      
Weighted Average Remaining Contractual Life, Options, Exercisable   2 years 3 days      
Aggregate Intrinsic Value, Outstanding, Options | $ $ 54,447,000       $ 100,420,000
Aggregate Intrinsic Value, Vested and expected to vest, Options | $ 54,370,000        
Aggregate Intrinsic Value, Exercisable, Options | $ $ 52,901,000        
Nio incentive 2016,2017,2018, and 2024 plan          
Number of Options Outstanding          
Granted | shares   0      
Nio Stock Incentive Plans From 2015 To 2024 | Minimum | Tranche two          
Share-based Compensation          
Vesting period   1 year      
Nio Stock Incentive Plans From 2015 To 2024 | Maximum | Tranche two          
Share-based Compensation          
Vesting period   5 years      
NIO Incentive Plans          
Weighted Average Exercise Price, Options          
Total intrinsic value | ¥   ¥ 20,605   ¥ 26,440  
Options | Nio Stock Incentive Plans From 2015 To 2024          
Share-based Compensation          
Expiration period   10 years      
Options | NIO Incentive Plans          
Weighted Average Exercise Price, Options          
Weighted-average grant date fair value for options granted | $ / shares     $ 3.64