XML 123 R100.htm IDEA: XBRL DOCUMENT
v3.26.1

Research and Development Expenses (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 CNY (¥) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 CNY (¥) | Dec. 31, 2023 CNY (¥)
Research and Development Expenses |  |  |  |
Employee compensation | ¥ 7,641,448 |  | ¥ 8,829,163 | ¥ 8,998,415
Design and development expenses | 1,699,274 |  | 2,561,769 | 3,019,403
Depreciation and amortization expenses | 710,737 |  | 991,074 | 720,737
Rental and related expenses | 235,535 |  | 250,597 | 273,493
Travel and entertainment expenses | 55,807 |  | 82,955 | 135,891
Others | 262,192 |  | 321,746 | 283,460
Total | ¥ 10,604,993 | $ 1,516,494 | ¥ 13,037,304 | ¥ 13,431,399

X
- Definition The aggregate costs incurred for depreciation and amortization expenses during the reporting period charged as research and development. + References No definition available. + Details
Name: | nio_ResearchAndDevelopmentExpenseDepreciationAndAmortizationExpenses
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate costs incurred for design and development expenses during the reporting period charged as research and development. + References No definition available. + Details
Name: | nio_ResearchAndDevelopmentExpenseDesignAndDevelopment
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate costs incurred for employee compensation during the reporting period charged as research and development. + References No definition available. + Details
Name: | nio_ResearchAndDevelopmentExpenseEmployeeCompensation
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate costs incurred for others during the reporting period charged as research and development. + References No definition available. + Details
Name: | nio_ResearchAndDevelopmentExpenseOthers
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate costs incurred for rental and related expenses during the reporting period charged as research and development. + References No definition available. + Details
Name: | nio_ResearchAndDevelopmentExpenseRentalAndRelatedExpenses
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate costs incurred for travel expenses during the reporting period charged as research and development. + References No definition available. + Details
Name: | nio_ResearchAndDevelopmentExpenseTravelExpenses
Namespace Prefix: | nio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-18 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-14 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 730 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482916/730-10-50-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 912 -SubTopic 730 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479532/912-730-25-1 + Details
Name: | us-gaap_ResearchAndDevelopmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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