Equity - Summary of Convertible Preferred Stock Outstanding (Details) - USD ($) $ in Thousands	Jan. 31, 2022		Oct. 17, 2021	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)	0		79,959,000	79,959,000
Convertible preferred stock, shares issued (in shares)	0		79,551,000	79,551,000
Carrying value of convertible preferred stock	$ 0	[1]	$ 424,904	$ 424,904	$ 425,146	$ 156,969
Series safe A1
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)			539,000
Convertible preferred stock, shares issued (in shares)			539,000
Carrying value of convertible preferred stock			$ 100
Series safe A2
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)			5,111,000
Convertible preferred stock, shares issued (in shares)			4,911,000
Carrying value of convertible preferred stock			$ 1,105
Series safe A3
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)			1,600,000
Convertible preferred stock, shares issued (in shares)			1,600,000
Carrying value of convertible preferred stock			$ 450
Series A
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)			12,393,000
Convertible preferred stock, shares issued (in shares)			12,393,000
Carrying value of convertible preferred stock			$ 3,954
Series B
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)			21,109,000
Convertible preferred stock, shares issued (in shares)			20,901,000
Carrying value of convertible preferred stock			$ 19,743
Series C
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)			12,282,000
Convertible preferred stock, shares issued (in shares)			12,282,000
Carrying value of convertible preferred stock			$ 21,935
Series D
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)			12,512,000
Convertible preferred stock, shares issued (in shares)			12,512,000
Carrying value of convertible preferred stock			$ 109,440
Series E
Class of Stock [Line Items]
Convertible preferred stock, shares authorized (in shares)			14,413,000
Convertible preferred stock, shares issued (in shares)			14,413,000
Carrying value of convertible preferred stock			$ 268,177

[1] (1) As of January 31, 2022, the consolidated balance sheet includes assets and liabilities of the consolidated variable interest entity, GitLab Information Technology (Hubei) Co., LTD (“JiHu”), of $17.7 million and $3.7 million, respectively. The assets of JiHu can be used only to settle obligations of JiHu and creditors of JiHu do not have recourse against the general credit of the Company. Refer to “Note 10. Joint Venture and Majority Owned Subsidiary” for further discussion.