Deferred Revenue and Remaining Performance Obligations - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Total deferred revenue	$ 96.9	$ 84.5
Percentage of total deferred revenue	39.00%	40.00%
Remaining performance obligation	$ 251.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-02-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Remaining performance obligation	$ 158.0
Revenue expected to be recognized from remaining performance obligations, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-02-01 \| Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue expected to be recognized from remaining performance obligations, period	13 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-02-01 \| Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue expected to be recognized from remaining performance obligations, period	36 months

Couchbase, Inc. 10-K