Redeemable Noncontrolling Interest - Narrative (Details) - EVgo OpCo	12 Months Ended
	Dec. 31, 2022 Vote shares
Units owned	195,800,000
Common shares subject to possible forfeiture	718,750
Percentage of ownership interest held	73.60%
Class B Common Stock [Member]
Percentage of voting interest	73.40%
Number of votes per share | Vote	1
Redeemable stock conversion ratio	1