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Document and Entity Information
 12 Months Ended
Dec. 31, 2022
shares
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2022
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-38638
Entity Registrant Name NIO Inc.
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One Building 20, No. 56 AnTuo Road
Entity Address, Address Line Two Anting Town
Entity Address, City or Town Shanghai
Entity Address, Postal Zip Code 201804
Entity Address, Country CN
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Document Accounting Standard U.S. GAAP
Entity Emerging Growth Company false
Entity Central Index Key 0001736541
Current Fiscal Year End Date --12-31
Amendment Flag false
Document Fiscal Year Focus 2022
Document Fiscal Period Focus FY
Entity Shell Company false
ICFR Auditor Attestation Flag true
Auditor Name PricewaterhouseCoopers Zhong Tian LLP
Auditor Firm ID 1424
Auditor Location Shanghai, the People’s Republic of China
Business Contact  
Contact Personnel Name Wei Feng
Entity Address, Address Line One Building 20, No. 56 AnTuo Road
Entity Address, Address Line Two Anting Town
Entity Address, City or Town Shanghai
Entity Address, Postal Zip Code 201804
Entity Address, Country CN
Contact Personnel Email Address ir@nio.com
City Area Code 86
Local Phone Number 21-6908 2018
American Depositary Shares  
Title of 12(b) Security American depositary shares (each representing one Class A ordinary share),par value US$0.00025 per share
Security Exchange Name NYSE
Trading Symbol NIO
Class A Ordinary Shares  
Title of 12(b) Security Class A ordinary shares, par value US$0.00025 per share
Entity Common Stock, Shares Outstanding 1,570,605,680
Trading Symbol NIO
Class C Ordinary Shares  
Entity Common Stock, Shares Outstanding 148,500,000