Share-based Compensation (Narrative) (Details)
$ in Millions |
1 Months Ended |
12 Months Ended |
|
Apr. 30, 2019
shares
|
Mar. 31, 2019
shares
|
Feb. 29, 2016 |
Mar. 31, 2015 |
Dec. 31, 2019
USD ($)
installment
shares
|
Dec. 31, 2018 |
Dec. 31, 2017
shares
|
Dec. 31, 2015
shares
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Total compensation expense not yet recognized | $ |
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$ 291.8
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| Weighted average period remaining for expense recognition |
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2 years 1 month 6 days
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| Percent of annual inventive compensation |
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100.00%
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| PSUs | Class B |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in shares) |
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1,330,000
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| PSUs | Class A |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in shares) |
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2,502,764
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| PSUs | Class C |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in shares) |
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5,005,528
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| RSAs | Class B |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in shares) |
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670,000
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| April 1 and October 1 of 2017 | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting percentage |
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50.00%
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| PSUs earned |
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99.50%
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| Performance period |
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2 years
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| April 1, 2019 and October 1, 2019 | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting percentage |
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50.00%
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| Adjusted OIBDA CAGR |
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6.00%
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| Performance period |
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3 years
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2 years
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| Liberty Global 2014 Incentive Plans |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share authorized (in shares) |
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155,000,000
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| Liberty Global 2014 Incentive Plans | Class B |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share authorized (in shares) |
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50,250,000
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| Liberty Global 2014 Incentive Plans | Anti-Dilution and Other Adjustment Provisions |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share authorized (in shares) |
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10,500,000
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| Liberty Global Incentive Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share authorized (in shares) |
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71,262,640
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| Liberty Global Incentive Plan | Awards other than Performance-Based Awards |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Award term |
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7 years
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| Liberty Global Incentive Plan | Six Month Anniversary After Grant Date |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting percentage |
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12.50%
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| Liberty Global Incentive Plan | Each Quarter Thereafter after Six Month Vest |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting percentage |
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6.25%
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| Liberty Global Director Incentive Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share authorized (in shares) |
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8,652,029
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| Award term |
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7 years
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| Number of equal or semi-equal installments | installment |
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3
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| 2016 PSUs | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expected performance earnings for PSUs |
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82.30%
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| 2018 PSUs | PSUs | Minimum |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expected performance earnings for PSUs |
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50.00%
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| Performance range |
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50.00%
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| 2018 PSUs | PSUs | Maximum |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expected performance earnings for PSUs |
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150.00%
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| Performance range |
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125.00%
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| 2018 PSUs | April 1, 2020 | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting percentage |
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50.00%
|
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| 2018 PSUs | October 1, 2020 | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting percentage |
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50.00%
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| 2019 PSUs | PSUs | Minimum |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expected performance earnings for PSUs |
50.00%
|
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| Performance range |
50.00%
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| 2019 PSUs | PSUs | Maximum |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expected performance earnings for PSUs |
150.00%
|
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| Performance range |
125.00%
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| 2019 PSUs | April 1, 2021 | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting percentage |
50.00%
|
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| 2019 PSUs | October 1, 2021 | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Vesting percentage |
50.00%
|
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| Liberty Global Challenge Performance Awards |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
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|
|
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| Vesting percentage |
|
100.00%
|
|
|
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| Award term |
|
10 years
|
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| Performance period |
|
3 years
|
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| Liberty Global Challenge Performance Awards | Class A |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of ordinary share rights for each performance share (in shares) |
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1
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| Liberty Global Challenge Performance Awards | Class C |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of ordinary share rights for each performance share (in shares) |
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1
|
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| CEO | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
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|
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| Granted (in shares) |
1,330,000
|
|
|
|
|
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| CEO | RSAs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in shares) |
670,000
|
|
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| CEO | May 15, 2020 | PSUs |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Award vesting (in shares) |
670,000
|
|
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| CEO | May 15, 2021 | PSUs |
|
|
|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
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| Award vesting (in shares) |
660,000
|
|
|
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| LiLAC Shares | CEO | Liberty Global Performance Grant Award | PSUs | Class B |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Granted (in shares) |
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41,589
|
33,333
|