Reverse Recapitalization & Business Combinations - Narrative (Details)						3 Months Ended		9 Months Ended
	Oct. 06, 2021 USD ($) $ / shares shares	Aug. 11, 2021 USD ($)	Jun. 29, 2021 shares	Mar. 12, 2021 shares	Feb. 26, 2021 USD ($) day $ / shares shares	Oct. 31, 2021 USD ($)	Oct. 31, 2020 USD ($)	Oct. 31, 2021 USD ($)	Oct. 31, 2020 USD ($)	Jan. 31, 2021 USD ($)
Schedule Of Reverse Recapitalization [Line Items]
Recapitalization exchange ratio					0.9966
Founder shares surrendered (in shares) | shares			9,000,000	9,000,000
Number of trading days | day					10
Number of consecutive trading days | day					20
Earnout period (in years)					5 years
Transaction costs expensed						$ 0	$ 0	$ (7,031,000)	$ 0
Goodwill, tax deductible amount						0		0
Accumulated Amortization						1,519,000		1,519,000
Deferred tax liabilities						$ 28,351,000		$ 28,351,000		$ 0
ViriCiti
Schedule Of Reverse Recapitalization [Line Items]
Cash consideration		$ 79,415,000
Earnout contingent consideration		7,700,000
Acquisition-related expenses		2,200,000
Total purchase consideration		83,323,000
Deferred tax liabilities		$ 3,400,000
HTB
Schedule Of Reverse Recapitalization [Line Items]
Cash consideration	$ 130,134,000
Acquisition-related expenses	2,600,000
Total purchase consideration	232,191,000
Common Stock consideration	$ 102,057,000
Equity transferred (in shares) | shares	5,695,176
Equity transferred (in USD per share) | $ / shares	$ 17.92
Shares held in escrow (in shares) | shares	885,692
Value of shares in escrow	$ 15,900,000
Deferred tax liabilities	$ 25,300,000
Risk-free interest rate | ViriCiti
Schedule Of Reverse Recapitalization [Line Items]
Measurement input		0.008
Expected volatility | ViriCiti
Schedule Of Reverse Recapitalization [Line Items]
Measurement input		0.34
Switchback
Schedule Of Reverse Recapitalization [Line Items]
Recapitalization exchange ratio					0.9966
Recapitalization common stock value (in USD per share) | $ / shares					$ 10.00
Legacy Chargepoint shares (in shares) | shares					217,021,368
Shares reserved for potential future issuance upon exercise of stock options and warrants (in shares) | shares					68,896,516
Shares reserved for potential future issuance of earnout shares (in shares) | shares					27,000,000
Founder shares surrendered (in shares) | shares					984,706
Additional earn back shares (in shares) | shares					900,000
Earn Back price trigger (USD per share) | $ / shares					$ 12.00
Number of trading days | day					10
Number of consecutive trading days | day					20
Earnout period (in years)					5 years
Merger and PIPE financing shares (in shares) | shares					60,746,989
Net cash contributions from merger					$ 511,600,000
Cash - Switchback's trust and cash					286,600,000
Repurchase of common stock					300,000
Merger and PIPE financing					225,000,000
Transaction costs expensed					36,500,000
Transaction costs expensed					7,000,000
Switchback | Additional Paid-In Capital
Schedule Of Reverse Recapitalization [Line Items]
Reduction to APIC					$ 29,500,000
Switchback | Private Placement Warrants
Schedule Of Reverse Recapitalization [Line Items]
Debt converted into warrants (in shares) | shares					1,000,000
Stock price of warrants (in dollars per share) | $ / shares					$ 1.50
Converted instrument, principal amount					$ 1,500,000
Switchback | Private Placement
Schedule Of Reverse Recapitalization [Line Items]
Number of shares sold (in shares) | shares					22,500,000
Purchase price per share (USD per share) | $ / shares					$ 10.00
Consideration received on sold shares					$ 225,000,000
Switchback | Series H-1 Redeemable Convertible Preferred Stock
Schedule Of Reverse Recapitalization [Line Items]
Shares converted (in shares) | shares					22,427,306
Recapitalization exchange ratio					1
Common stock dividends (in shares) | shares					1,026,084
Temporary equity, accrued dividends					$ 21,100,000
Switchback | Series H, Series G, Series F, Series E, And Series D Redeemable Convertible Preferred Stock
Schedule Of Reverse Recapitalization [Line Items]
Shares converted (in shares) | shares					160,925,957
Recapitalization exchange ratio					1
Switchback | Series C Redeemable Convertible Preferred Stock
Schedule Of Reverse Recapitalization [Line Items]
Shares converted (in shares) | shares					45,376
Recapitalization exchange ratio					73.4403
Switchback | Series B Convertible Redeemable Preferred Stock
Schedule Of Reverse Recapitalization [Line Items]
Shares converted (in shares) | shares					130,590
Recapitalization exchange ratio					42.9220
Switchback | Series A Redeemable Convertible Preferred Stock
Schedule Of Reverse Recapitalization [Line Items]
Shares converted (in shares) | shares					29,126
Recapitalization exchange ratio					48.2529