Property and Equipment, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Depreciation and amortization	$ 3.2	$ 2.7	$ 9.7	$ 7.6

Depreciation and amortization related to property and equipment

No definition available.

Name:	tenb_DepreciationAndAmortizationPropertyAndEquipment
Namespace Prefix:	tenb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration