| Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 | Dec 31,
2024 |
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| Vehicle sales | - | 1,058 | 2,327 | 5,205 | 6,598 | 6,938 | 7,978 |
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| Other sales | - | 66 | 165 | 466 | 545 | 896 | 1,027 |
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| Total revenues | - | 1,124 | 2,492 | 5,671 | 7,143 | 7,834 | 9,005 |
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| Vehicle sales | - | 1,163 | 2,032 | 4,161 | 5,694 | 6,280 | 7,000 |
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| Other sales | - | 133 | 173 | 439 | 704 | 1,124 | 1,116 |
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| Total cost of sales | - | 1,296 | 2,205 | 4,600 | 6,397 | 7,404 | 8,116 |
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| Gross profit | -37 | -172 | 287 | 1,070 | 746 | 430 | 890 |
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| Research and development | 581 | 636 | 381 | 721 | 1,571 | 1,892 | 1,786 |
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| Selling, general and administrative | 777 | 783 | 603 | 1,079 | 1,528 | 1,815 | 2,157 |
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| Other operating income, net | - | - | - | 24 | 85 | 86 | 56 |
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| Total operating expenses | 1,358 | 1,419 | 993 | 1,776 | 3,013 | 3,621 | 3,886 |
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| Loss from operations | -1,396 | -1,591 | -706 | -706 | -2,268 | -3,191 | -2,997 |
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| Interest and Other Income | - | 23 | 26 | 143 | 197 | 311 | 117 |
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| Interest expenses | 18 | 53 | 65 | 100 | 48 | 57 | 109 |
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| Gain/(loss) on extinguishment of debt | - | - | - | - | 20 | 24 | -1 |
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| Share of income/(loss) of equity investees | - | -9 | -10 | 10 | 55 | 9 | -69 |
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| Other (loss)/income, net | -3 | 10 | -56 | 29 | -41 | 22 | -13 |
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| Loss before income tax expense | -1,399 | -1,621 | -812 | -624 | -2,085 | -2,882 | -3,072 |
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| Income tax (expense)/benefit | 3 | 1 | 1 | 7 | 8 | 37 | -3 |
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| Net loss | -1,402 | -1,623 | -813 | -630 | -2,093 | -2,918 | -3,069 |
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| Noncontrolling Interest, Change in Redemption Value | - | -18 | -48 | -1,034 | -41 | -43 | -48 |
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| Net loss attributable to non-controlling interests | -6 | -1 | -1 | -5 | -23 | 17 | -13 |
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| Net loss attributable to ordinary shareholders of NIO Inc. | -3,393 | -1,639 | -860 | -1,659 | -2,111 | -2,978 | -3,104 |
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| Net loss | -1,402 | -1,623 | -813 | -630 | -2,093 | -2,918 | -3,069 |
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| Debt Securities, Available-for-sale, Unrealized Gain (Loss) | - | - | - | 4 | 108 | -109 | - |
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| Foreign currency translation adjustment | -3 | -24 | 21 | -36 | 104 | 2 | 21 |
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| Total other comprehensive income/(loss) | -3 | -24 | 21 | -32 | 212 | -107 | 21 |
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| Total comprehensive loss | -1,405 | -1,647 | -792 | -663 | -1,881 | -3,025 | -3,049 |
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| Noncontrolling Interest, Change in Redemption Value | - | -18 | -48 | -1,034 | -41 | -43 | -48 |
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| Net loss/(profit) attributable to non-controlling interests | -6 | -1 | -1 | -5 | -23 | 17 | -13 |
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| Other comprehensive (income)/loss attributable to non-controlling interests | - | - | - | -1 | -22 | 22 | - |
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| Comprehensive loss attributable to ordinary shareholders of NIO Inc | -3,396 | -1,664 | -839 | -1,692 | -1,921 | -3,063 | -3,084 |
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| Net loss per share, basic | - | - | - | -1.05 | -1.29 | -1.75 | -1.51 |
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| Net loss per share, diluted | - | - | - | -1.05 | -1.29 | -1.75 | -1.51 |
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| Net loss per ADS, basic | - | - | - | -1.05 | -1.29 | -1.75 | -1.51 |
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| Net loss per ADS, diluted | - | - | - | -1.05 | -1.29 | -1.75 | -1.51 |
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