v3.25.4

Commitments and Contingencies - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 USD ($)
Commitments and Contingencies [Line Items] |
Increase in future lease commitments | $ 91.8

X
- Definition Commitments and contingencies. + References No definition available. + Details
Name: | hubs_CommitmentsAndContingenciesLineItems
Namespace Prefix: | hubs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount future lease payments would increase by if early termination clauses were not followed. + References No definition available. + Details
Name: | hubs_IncreaseInFutureLeaseCommitments
Namespace Prefix: | hubs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration