v3.25.3
Acquisitions - Narrative (Details)
$ in Millions, ₡ in Billions
9 Months Ended 12 Months Ended 36 Months Ended
Sep. 03, 2027
USD ($)
Sep. 03, 2026
USD ($)
Sep. 03, 2025
USD ($)
Sep. 03, 2024
USD ($)
installment
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Jan. 29, 2027
USD ($)
Rate
Jan. 29, 2027
CRC (₡)
Rate
Sep. 03, 2027
USD ($)
Mar. 31, 2026
Jan. 30, 2026
Rate
Business Combination [Line Items]                      
Cash paid in connection with an acquisition         $ 0.0 $ 95.4          
DISH                      
Business Combination [Line Items]                      
Annual installments | installment       4              
Cash paid in connection with an acquisition     $ 72.0 $ 95.0              
Forecast | Liberty Costa Rica | Subsequent Event                      
Business Combination [Line Items]                      
Ownership interest                     8.50%
Payments to acquire equity method investments             $ 84.0        
Percent of payments due at closing | Rate                     62.50%
Percent of payments due after closing | Rate             37.50% 37.50%      
Forecast | Liberty Costa Rica | Subsequent Event | Payment One                      
Business Combination [Line Items]                      
Payments to acquire equity method investments             $ 44.0 ₡ 22      
Forecast | Liberty Costa Rica | Subsequent Event | Payment Two                      
Business Combination [Line Items]                      
Payments to acquire equity method investments             $ 40.0        
Forecast | Joint Costa Rica Operations | Liberty Latin America and Minority Partner                      
Business Combination [Line Items]                      
Percentage of interests acquired (as a percent)                   86.00%  
Forecast | Joint Costa Rica Operations | Millicom                      
Business Combination [Line Items]                      
Percentage of interests acquired (as a percent)                   14.00%  
Forecast | DISH                      
Business Combination [Line Items]                      
Cash consideration                 $ 256.0    
Cash paid in connection with an acquisition $ 40.0 $ 45.0