Redeemable Noncontrolling Interest - Narrative (Details) - EVgo OpCo	9 Months Ended
	Sep. 30, 2022 Vote shares
Units owned	195,800,000
Common shares subject to possible forfeiture	718,750
Post-transaction ownership percentage of the target business	74.00%
Class B Common Stock [Member]
Post-transaction ownership percentage of the target business	74.00%
Number of votes per share | Vote	1
Redeemable stock conversion ratio	1