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Concentration and Risks - Additional Information (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Concentration and Risks
Cash, cash equivalents and restricted cash subject to currency conversion controls	¥ 13,012,259	¥ 10,453,728

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- Definition

The amount of cash, cash equivalents and restricted cash that is subject to governmental controls on the convertibility of currency.

+ References

No definition available.

+ Details

Name:	nio_CashCashEquivalentsAndRestrictedCashSubjectToConvertibilityRestrictions
Namespace Prefix:	nio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

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