Stock Warrants and Earnout - Narrative (Details)						3 Months Ended						6 Months Ended
	Jul. 06, 2021 $ / shares shares	Jun. 29, 2021 $ / shares shares	Jun. 04, 2021 shares	Mar. 12, 2021 USD ($) shares	Feb. 26, 2021 USD ($) day $ / shares shares	Jul. 31, 2022 USD ($) shares	Apr. 30, 2022 shares	[1]	Jul. 31, 2021 USD ($) shares	Apr. 30, 2021 USD ($) shares		Jul. 31, 2022 USD ($) shares	Jul. 31, 2021 USD ($) shares	Feb. 21, 2022 $ / shares	Jan. 31, 2022 shares	Jul. 01, 2021 shares	Mar. 19, 2021 USD ($) tranche shares
Class of Warrant or Right [Line Items]
Warrants exercised (in shares)												25,003
Proceeds from the exercise of warrants | $												$ 0	$ 117,598,000
Warrants outstanding (in shares)						35,524,021						35,524,021			35,549,024
Earnout period (in years)					5 years
Earnout shares (in shares)				18,000,000	27,000,000
Number of trading days | day					10
Number of consecutive trading days | day					20
Estimated fair value of total earnout shares | $					$ 828,200,000
Earnout shares, net (in shares)																8,773,596	17,539,657
Derivative liability | $																	$ 743,700,000
Number of tranches | tranche																	2
Earnout shares remaining (in shares)		9,000,000		9,000,000
Gain from change in fair value | $										$ 84,400,000
Common Stock
Class of Warrant or Right [Line Items]
Issuance of common stock upon exercise of warrants (in shares)							16,948		4,378,568	9,766,774	[1]
Legacy Chargepoint | Common Stock
Class of Warrant or Right [Line Items]
Issuance of common stock upon exercise of warrants (in shares)									558,100			13,223	1,480,080
Derivative Instrument, Period One
Class of Warrant or Right [Line Items]
Earn Back price trigger (USD per share) | $ / shares					$ 15.00
Derivative Instrument, Period Two
Class of Warrant or Right [Line Items]
Earn Back price trigger (USD per share) | $ / shares					20.00
Derivative Instrument, Period Three
Class of Warrant or Right [Line Items]
Earn Back price trigger (USD per share) | $ / shares					30.00
Triggering Event, $15 And $20 VWAP Per Share Thresholds
Class of Warrant or Right [Line Items]
Derivative liability | $				$ 501,100,000
Triggering Event, $15 And $20 VWAP Per Share Thresholds | Minimum
Class of Warrant or Right [Line Items]
Earn Back price trigger (USD per share) | $ / shares					15.00
Triggering Event, $15 And $20 VWAP Per Share Thresholds | Maximum
Class of Warrant or Right [Line Items]
Earn Back price trigger (USD per share) | $ / shares					20.00
Triggering Event, $30 VWAP Per Share Threshold
Class of Warrant or Right [Line Items]
Earn Back price trigger (USD per share) | $ / shares		$ 30.00			$ 30.00
Derivative liability | $				$ 242,600,000
Legacy Common Stock Warrants
Class of Warrant or Right [Line Items]
Warrants exercised (in shares)						0			587,880
Issuance of common stock upon exercise of warrants (in shares)						0
Proceeds from the exercise of warrants | $									$ 0
Legacy Warrants
Class of Warrant or Right [Line Items]
Warrants exercised (in shares)												14,568	1,685,185
Warrants outstanding (in shares)						35,524,021						35,524,021			35,538,589
Private Placement Warrants
Class of Warrant or Right [Line Items]
Warrants exercised (in shares)												10,435
Warrants outstanding (in shares)						0						0			10,435
Gain on private placement warrants | $									3,800,000				$ 49,200,000
Warrant per common share | $ / shares														$ 0.355
Private placement warrant liability
Class of Warrant or Right [Line Items]
Change in fair value of warrant liabilities | $						$ 0			10,421,000			$ 24,000	(33,340,000)
Public Warrants
Class of Warrant or Right [Line Items]
Warrants exercised (in shares)			244,481
Proceeds from the exercise of warrants | $												$ 0	117,600,000
Warrants outstanding (in shares)						0						0			0
Warrants redeemed (in shares)	244,481
Warrants redeemed price per share (in USD per share) | $ / shares	$ 0.01
Change in fair value of warrant liabilities | $						$ 0			$ 14,300,000			$ 0	$ 15,900,000

[1] The shares of the Company’s common and redeemable convertible preferred stock prior to the Merger (as defined in Note 1) have been retroactively restated to reflect the exchange ratio of approximately 0.9966 established in the Merger as described in Note 1.