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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Share-based Compensation (Narrative) (Details) $ in Millions		1 Months Ended			12 Months Ended
	Nov. 07, 2023 USD ($)	Apr. 30, 2022	Apr. 30, 2019 shares	Mar. 31, 2019 shares	Dec. 31, 2023 USD ($) installment shares	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense not yet recognized \| $					$ 165.8
Weighted average period remaining for expense recognition					1 year 10 months 24 days
Performance period			2 years
CEO \| RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			670,000
CEO \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			1,330,000
May 15, 2020 \| CEO \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting (in shares)			670,000
May 15, 2021 \| CEO \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting (in shares)			660,000
Class A \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					2,189,968
Class A \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					564,660
Class C \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					4,867,995
Class C \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					1,042,067
Liberty Global 2023 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized (in shares)					43,284,342
Number of shares available for grant					40,245,318
Vesting period					3 years
Expiration period					10 years
Liberty Global 2014 Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Expiration period					10 years	7 years
Liberty Global 2014 Nonemployee Director Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period					10 years
Number of equal or semi-equal installments \| installment					3
CEO Performance Share Plan 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
CEO Performance Share Plan 2022 (CEO PSP 2022)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
CEO Performance Share Plan 2023 (CEO PSP 2023)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Restricted Share Plan 2022 (RSP 2022)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Holding restriction period					2 years
Restricted Share Plan 2022 (RSP 2022) \| After year two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					60.00%
Restricted Share Plan 2022 (RSP 2022) \| After year one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					40.00%
Restricted Share Plan 2023 (RSP 2023)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Holding restriction period					2 years
Restricted Share Plan 2023 (RSP 2023) \| After year two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					60.00%
Restricted Share Plan 2023 (RSP 2023) \| After year one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					40.00%
Performance Share Plan 2020 (PSP 2020)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Holding restriction period					2 years
Performance Share Plan 2021 (PSP 2021)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Performance Share Plan 2023 (PSP 2023)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Performance Share Plan 2022 (PSP 2022) \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Holding restriction period					2 years
Performance Share Plan 2022 (PSP 2022) \| After year two \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					60.00%
Performance Share Plan 2022 (PSP 2022) \| After year one \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					40.00%
Telenet Replacement Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense not yet recognized \| $	$ 41.5
Award conversion ratio	0.5
Liberty Global Challenge Performance Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period				10 years
Vesting percentage				100.00%
Performance period				3 years
Liberty Global Challenge Performance Awards \| Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of ordinary share rights for each performance share (in shares)				1
Liberty Global Challenge Performance Awards \| Class C
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of ordinary share rights for each performance share (in shares)				1
2019 PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjusted OIBDA CAGR			1.38%
2019 PSUs \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PSUs earned			65.00%
2019 PSUs \| April 1, 2021 \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			50.00%
Ventures Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		100.00%
Assessed period		3 years
Ventures Incentive Plans \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Eligible participants’ initial contribution percent		10.00%
Ventures Incentive Plans \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Eligible participants’ initial contribution percent		50.00%
2021 Ventures Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Eligible participants’ initial contribution percent		10.00%
2021 Ventures Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Eligible participants’ initial contribution percent		100.00%