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Related Party Balances and Transactions - Short-term borrowing and interest payable (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Huang River Investment Limited
Related Party Balances and Transactions
Short-term borrowing and interest payable	¥ 3,918	¥ 381,785

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of borrowings from a creditor other than a bank with a maturity within one year or operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a)(2))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=nio_HuangRiverInvestmentLimitedMember
Namespace Prefix:
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Balance Type:
Period Type: