Reverse Recapitalization & Business Combinations - Pro Forma Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Business Acquisition [Line Items]
Revenue	$ 66,571	$ 38,176	$ 168,736	$ 109,251
Pro forma net loss	(70,559)	(44,807)	(80,708)	(119,334)
HTB
Business Acquisition [Line Items]
An increase in amortization expense	(2,402)	(3,407)	(9,889)	(9,694)
An (increase) decrease in expenses related to transaction	2,556	0	2,556	(2,556)
An (increase) decrease in tax provision	(38)	852	1,833	3,062
Overall (increase) decrease in net loss	116	(2,555)	(5,500)	(9,188)
Pro forma net loss	(1,233)	(1,362)	(3,116)	(3,871)
Chargepoint
Business Acquisition [Line Items]
Pro forma net loss	(69,442)	(40,890)	(72,092)	(106,275)
Chargepoint and HTB
Business Acquisition [Line Items]
Pro forma net loss	$ (70,559)	$ (44,807)	$ (80,708)	$ (119,334)