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Debt, Commitments and Contingencies - Legal Proceedings (Details) - Pending Litigation
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 10, 2022
patent
Jul. 28, 2021
patent
Jul. 22, 2021
patent
Jan. 31, 2021
patent
claim
Oct. 31, 2019
patent
Mar. 31, 2024
patent
Dec. 31, 2018
patent
EcoFactor, Inc. vs. Alarm.com Holdings, Inc.              
Loss Contingencies [Line Items]              
Number of patents allegedly infringed upon by the company 5       2    
Number of patents under ex parte reexamination           3  
Causam Enterprises, Inc vs Alarm.com Holdings, Inc              
Loss Contingencies [Line Items]              
Number of patents allegedly infringed upon by the company     4        
Causam Enterprises, Inc vs Alarm.com Holdings, Inc and EnergyHub, Inc              
Loss Contingencies [Line Items]              
Number of patents allegedly infringed upon by the company   4          
Ubiquitous Connectivity, LP vs. Alarm.com Holdings, Inc              
Loss Contingencies [Line Items]              
Number of patents allegedly infringed upon by the company       4     2
Number of claims deemed unpatentable | claim       42      
Number of claims | claim       46