v3.26.1
Cover - shares
 3 Months Ended
Mar. 31, 2026
May 05, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-42120  
Entity Registrant Name Life360, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 26-0197666  
Entity Address, Address Line One 1900 South Norfolk Street  
Entity Address, Address Line Two Suite 310  
Entity Address, City or Town San Mateo  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94403  
City Area Code 415  
Local Phone Number 484-5244  
Title of 12(b) Security Common Stock, $0.001 par value per share  
Trading Symbol LIF  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   81,031,691
Entity Central Index Key 0001581760  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false