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Land Use Rights, Net (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2025 CNY (¥) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 CNY (¥)
--- | --- | --- | ---
Land Use Rights, Net |  |  |
Land use rights | ¥ 235,198 |  | ¥ 235,198
Less: Accumulated amortization-land use rights | (38,507) |  | (33,203)
Total land use rights, net | ¥ 196,691 | $ 28,126 | ¥ 201,995

X
- Definition Represents amount of amortization expense for current period. + References No definition available. + Details
Name: | nio_AccumulatedAmortizationOnLandUseRights
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents amount for land use right gross. + References No definition available. + Details
Name: | nio_LandUseRightsGross
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents amount for total net land use rights. + References No definition available. + Details
Name: | nio_LandUseRightsNet
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | nio_LandUseRightsNetAbstract
Namespace Prefix: | nio_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration