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Revenue Recognition - Contract assets and liabilities and liabilities activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Revenue Recognition
Contract assets	$ 0	$ 2,861
Contract liabilities	74,537	$ 57,790
Change in contract assets	(2,861)
Change in contract liabilities	$ 16,747
Change in contract assets (as percentage)	(100.00%)
Change in contract liabilities (as percentage)	29.00%
Contract balances
Beginning balance	$ 57,790
Additions	27,471
Recognized in revenue	(10,654)
Marketing activities recognized on a net basis	(70)
Ending balance	$ 74,537

X

- Definition

Amount of increase (decrease) in contract assets related to amounts invoiced offset by revenue recognized from performance obligations satisfied in the current reporting period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Contract with customer liability decrease in marketing activities.

+ References

No definition available.

+ Details

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Namespace Prefix:	evgo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of increase (decrease) in contract liabilities related to customer activity associated with each of our product offerings including the receipt of cash payments and the satisfaction of our performance obligations.

+ References

No definition available.

+ Details

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Namespace Prefix:	evgo_
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Balance Type:	debit
Period Type:	duration

X

- Definition

Contract with customer liability increase (decrease) for contract liability.

+ References

No definition available.

+ Details

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Namespace Prefix:	evgo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of revenue recognized during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	evgo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the percentage of change in contract assets.

+ References

No definition available.

+ Details

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Namespace Prefix:	evgo_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of change in contract liabilities.

+ References

No definition available.

+ Details

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Namespace Prefix:	evgo_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130533-203044

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Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 8
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044

+ Details

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X

- References

No definition available.

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