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Net Loss Per Share - Narrative (Details) - shares |  | 3 Months Ended
--- | --- | ---
Jul. 01, 2021 | Mar. 31, 2022
EVgo OpCo |  |
Earnings per share |  |
Units Issued During Period, Shares, New Issues |  | 195,800,000
Class B Common Stock [Member] |  |
Earnings per share |  |
Shares issued | 195,800,000 |
Class B Common Stock [Member] | EVgo OpCo |  |
Earnings per share |  |
Shares transferred per agreement | 195,800,000 |

X
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