v3.25.2
Segment Reporting - Revenue by Major Category (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Principal Transaction Revenue [Line Items]        
Revenue $ 1,086.7 $ 1,118.0 $ 2,170.2 $ 2,217.4
Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue 746.9 732.8 1,495.7 1,477.6
Total residential fixed revenue        
Principal Transaction Revenue [Line Items]        
Revenue 326.0 330.0 652.5 660.6
Subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 304.4 308.9 609.1 616.4
Non-subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 21.6 21.1 43.4 44.2
Total residential mobile revenue        
Principal Transaction Revenue [Line Items]        
Revenue 420.9 402.8 843.2 817.0
Service revenue        
Principal Transaction Revenue [Line Items]        
Revenue 310.7 301.3 621.6 610.0
Interconnect, inbound roaming, equipment sales and other        
Principal Transaction Revenue [Line Items]        
Revenue 110.2 101.5 221.6 207.0
B2B revenue        
Principal Transaction Revenue [Line Items]        
Revenue 334.1 377.9 662.2 724.4
Other revenue        
Principal Transaction Revenue [Line Items]        
Revenue 5.7 7.3 12.3 15.4
Mobile Handset        
Principal Transaction Revenue [Line Items]        
Revenue 56.0 49.0 116.0  
B2B Mobile Handset and Other Devices        
Principal Transaction Revenue [Line Items]        
Revenue 7.0 6.0 13.0 12.0
Mobile Service Revenue        
Principal Transaction Revenue [Line Items]        
Revenue       99.0
Liberty Networks        
Principal Transaction Revenue [Line Items]        
Revenue       45.0
Liberty Networks, Other        
Principal Transaction Revenue [Line Items]        
Revenue (23.0) 23.0 46.0  
Operating Segments        
Principal Transaction Revenue [Line Items]        
Revenue 1,110.8 1,140.4 2,218.7 2,261.8
Operating Segments | Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue 252.5 248.7 500.6  
Operating Segments | Liberty Caribbean        
Principal Transaction Revenue [Line Items]        
Revenue 366.3 368.3 730.2 732.5
Operating Segments | Liberty Caribbean | Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue 237.5 234.9 476.7 470.4
Operating Segments | Liberty Caribbean | Total residential fixed revenue        
Principal Transaction Revenue [Line Items]        
Revenue 128.3 130.8 257.2 260.3
Operating Segments | Liberty Caribbean | Subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 123.7 123.7 247.2 245.6
Operating Segments | Liberty Caribbean | Non-subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 4.6 7.1 10.0 14.7
Operating Segments | Liberty Caribbean | Total residential mobile revenue        
Principal Transaction Revenue [Line Items]        
Revenue 109.2 104.1 219.5 210.1
Operating Segments | Liberty Caribbean | Service revenue        
Principal Transaction Revenue [Line Items]        
Revenue 89.4 86.2 178.4 171.8
Operating Segments | Liberty Caribbean | Interconnect, inbound roaming, equipment sales and other        
Principal Transaction Revenue [Line Items]        
Revenue 19.8 17.9 41.1 38.3
Operating Segments | Liberty Caribbean | B2B revenue        
Principal Transaction Revenue [Line Items]        
Revenue 128.8 133.4 253.5 262.1
Operating Segments | Liberty Caribbean | Other revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | C&W Panama        
Principal Transaction Revenue [Line Items]        
Revenue 177.3 197.2 354.3 366.4
Operating Segments | C&W Panama | Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue 118.3 113.5 235.9 219.6
Operating Segments | C&W Panama | Total residential fixed revenue        
Principal Transaction Revenue [Line Items]        
Revenue 31.2 31.3 62.4 62.9
Operating Segments | C&W Panama | Subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 29.9 30.1 59.8 60.5
Operating Segments | C&W Panama | Non-subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 1.3 1.2 2.6 2.4
Operating Segments | C&W Panama | Total residential mobile revenue        
Principal Transaction Revenue [Line Items]        
Revenue 87.1 82.2 173.5 156.7
Operating Segments | C&W Panama | Service revenue        
Principal Transaction Revenue [Line Items]        
Revenue 71.0 67.9 142.2 129.7
Operating Segments | C&W Panama | Interconnect, inbound roaming, equipment sales and other        
Principal Transaction Revenue [Line Items]        
Revenue 16.1 14.3 31.3 27.0
Operating Segments | C&W Panama | B2B revenue        
Principal Transaction Revenue [Line Items]        
Revenue 59.0 83.7 118.4 146.8
Operating Segments | C&W Panama | Other revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Networks        
Principal Transaction Revenue [Line Items]        
Revenue 114.6 119.1 225.0 227.6
Operating Segments | Liberty Networks | Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Networks | Total residential fixed revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Networks | Subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Networks | Non-subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Networks | Total residential mobile revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Networks | Service revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Networks | Interconnect, inbound roaming, equipment sales and other        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Networks | B2B revenue        
Principal Transaction Revenue [Line Items]        
Revenue 114.6 119.1 225.0 227.6
Operating Segments | Liberty Networks | Other revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Operating Segments | Liberty Puerto Rico        
Principal Transaction Revenue [Line Items]        
Revenue 301.3 308.6 599.7 635.8
Operating Segments | Liberty Puerto Rico | Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue       511.8
Operating Segments | Liberty Puerto Rico | Total residential fixed revenue        
Principal Transaction Revenue [Line Items]        
Revenue 124.8 126.1 248.6 251.2
Operating Segments | Liberty Puerto Rico | Subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 118.9 120.4 236.9 240.2
Operating Segments | Liberty Puerto Rico | Non-subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 5.9 5.7 11.7 11.0
Operating Segments | Liberty Puerto Rico | Total residential mobile revenue        
Principal Transaction Revenue [Line Items]        
Revenue 127.7 122.6 252.0 260.6
Operating Segments | Liberty Puerto Rico | Service revenue        
Principal Transaction Revenue [Line Items]        
Revenue 78.2 78.7 157.2 172.2
Operating Segments | Liberty Puerto Rico | Interconnect, inbound roaming, equipment sales and other        
Principal Transaction Revenue [Line Items]        
Revenue 49.5 43.9 94.8 88.4
Operating Segments | Liberty Puerto Rico | B2B revenue        
Principal Transaction Revenue [Line Items]        
Revenue 43.1 52.6 86.8 108.6
Operating Segments | Liberty Puerto Rico | Other revenue        
Principal Transaction Revenue [Line Items]        
Revenue 5.7 7.3 12.3 15.4
Operating Segments | Liberty Costa Rica        
Principal Transaction Revenue [Line Items]        
Revenue 151.3 147.2 309.5 299.5
Operating Segments | Liberty Costa Rica | Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue 135.4 130.8 275.8 266.7
Operating Segments | Liberty Costa Rica | Total residential fixed revenue        
Principal Transaction Revenue [Line Items]        
Revenue 41.7 42.6 84.3 87.7
Operating Segments | Liberty Costa Rica | Subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 31.9 34.7 65.2 70.1
Operating Segments | Liberty Costa Rica | Non-subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 9.8 7.9 19.1 17.6
Operating Segments | Liberty Costa Rica | Total residential mobile revenue        
Principal Transaction Revenue [Line Items]        
Revenue 93.7 88.2 191.5 179.0
Operating Segments | Liberty Costa Rica | Service revenue        
Principal Transaction Revenue [Line Items]        
Revenue 72.1 68.5 143.8 136.3
Operating Segments | Liberty Costa Rica | Interconnect, inbound roaming, equipment sales and other        
Principal Transaction Revenue [Line Items]        
Revenue 21.6 19.7 47.7 42.7
Operating Segments | Liberty Costa Rica | B2B revenue        
Principal Transaction Revenue [Line Items]        
Revenue 15.9 16.4 33.7 32.8
Operating Segments | Liberty Costa Rica | Other revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Corporate        
Principal Transaction Revenue [Line Items]        
Revenue 3.8 5.9 7.7 11.0
Corporate | Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue 3.2 5.7 6.7 10.6
Corporate | Total residential fixed revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Corporate | Subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Corporate | Non-subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Corporate | Total residential mobile revenue        
Principal Transaction Revenue [Line Items]        
Revenue 3.2 5.7 6.7 10.6
Corporate | Service revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Corporate | Interconnect, inbound roaming, equipment sales and other        
Principal Transaction Revenue [Line Items]        
Revenue 3.2 5.7 6.7 10.6
Corporate | B2B revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.6 0.2 1.0 0.4
Corporate | Other revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Intersegment Eliminations        
Principal Transaction Revenue [Line Items]        
Revenue (27.9) (28.3) (56.2) (55.4)
Intersegment Eliminations | Total residential revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 (0.8) 0.0 (1.5)
Intersegment Eliminations | Total residential fixed revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 (0.8) 0.0 (1.5)
Intersegment Eliminations | Subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Intersegment Eliminations | Non-subscription revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 (0.8) 0.0 (1.5)
Intersegment Eliminations | Total residential mobile revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Intersegment Eliminations | Service revenue        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Intersegment Eliminations | Interconnect, inbound roaming, equipment sales and other        
Principal Transaction Revenue [Line Items]        
Revenue 0.0 0.0 0.0 0.0
Intersegment Eliminations | B2B revenue        
Principal Transaction Revenue [Line Items]        
Revenue (27.9) (27.5) (56.2) (53.9)
Intersegment Eliminations | Other revenue        
Principal Transaction Revenue [Line Items]        
Revenue $ 0.0 $ 0.0 $ 0.0 $ 0.0