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Subsequent Events - Additional Information (Detail) - CNY (¥) ¥ in Thousands |  | 2 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2023 | Apr. 30, 2023 | Dec. 31, 2022
EHang Egret GD [Member] | EHang GZ [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Business combination step acquistion equity interest in the acquiree percentage |  |  | 60.00%
EHang Egret GD [Member] | EH Kashi Ehang Egret Media Technology Co Ltd Ehang Egret Ks [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Variable interest entity ownership percentage |  |  | 60.00%
Subsequent Event [Member] | EHang Egret GD [Member] | EHang GZ [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Business combination percentage of voting interests acquired | 40.00% |  |
Payment to acquire business gross | ¥ 4,000 |  |
Business combination step acquistion equity interest in acquiree including subsequent acquisition percentage | 100.00% |  |
Subsequent Event [Member] | EHang Egret GD [Member] | EH Kashi Ehang Egret Media Technology Co Ltd Ehang Egret Ks [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Business combination equity interest disposed off | 60.00% |  |
Proceeds from the disposal of equity interests in variable interest entity | ¥ 0 |  |
Subsequent Event [Member] | Private Placement Subject To Overseas Direct Investment Approval [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Proceeds from the issuance of equity |  | ¥ 10,000 |
Subsequent Event [Member] | Supplemental Agreement With Investor [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Repayment of short term debt maturing in three months or more |  | ¥ 69,861 |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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