Label	Element	Value
Additional Paid-in Capital [Member]
Stock Issued During Period, Value, Reverse Recapitalization	chpt_StockIssuedDuringPeriodValueReverseRecapitalization	$ 200,500,000

Stock Issued During Period, Value, Reverse Recapitalization

No definition available.

Name:	chpt_StockIssuedDuringPeriodValueReverseRecapitalization
Namespace Prefix:	chpt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration