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Acquisitions - Narrative (Details) $ in Millions, ₡ in Billions					12 Months Ended		36 Months Ended
	Sep. 03, 2027 USD ($)	Sep. 03, 2026 USD ($)	Sep. 03, 2025 USD ($)	Sep. 03, 2024 USD ($) installment	Jan. 29, 2027 USD ($) Rate	Jan. 29, 2027 CRC (₡) Rate	Sep. 03, 2027 USD ($)	Jan. 30, 2026 Rate	Dec. 31, 2025
DISH
Business Combination [Line Items]
Annual installments \| installment				4
Cash paid in connection with an acquisition				$ 95
Forecast \| Liberty Costa Rica \| Subsequent Event
Business Combination [Line Items]
Ownership interest								8.50%
Payments to acquire equity method investments					$ 83
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					$ 43	₡ 22
Forecast \| Liberty Costa Rica \| Subsequent Event \| Payment Two
Business Combination [Line Items]
Payments to acquire equity method investments					$ 40
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
Cash paid in connection with an acquisition	$ 40	$ 45	$ 72