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Deferred Revenue/Income - Additional information (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Deferred Revenue/Income
Unrecognized deferred revenue	¥ 3,546,849	¥ 2,164,288
Investor relations program, term	5 years
Deferred revenue, ADR	¥ 15,041	¥ 33,478

X

- Definition

Amount of deferred income related to American Depositary Receipt, which is not an obligation to transfer product and service to customer for which consideration has been received or is receivable.

+ References

No definition available.

+ Details

Name:	nio_DeferredIncomeAmericanDepositaryReceipt
Namespace Prefix:	nio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The term of the investor relations program.

+ References

No definition available.

+ Details

Name:	nio_InvestorRelationsProgramTerm
Namespace Prefix:	nio_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of unrecognized deferred revenue at the balance sheet date.

+ References

No definition available.

+ Details

Name:	nio_UnrecognizedDeferredRevenue
Namespace Prefix:	nio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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