Contingent Liabilities	6 Months Ended
Contingent Liabilities	Jun. 30, 2012
Loss Contingencies [Line Items]
Contingent Liabilities	Contingent Liabilities We are involved in lawsuits, claims, investigations and proceedings, consisting of intellectual property, commercial, employee and employee benefits which arise in the ordinary course of our business. In accordance with the Contingencies Topic of the FASB ASC, we recognize a provision for a liability when management believes that it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. We believe we have adequate provisions for any such matters. We review these provisions at least quarterly and adjust these provisions to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular case. Additionally, when we believe it is at least reasonably possible that a liability has been incurred in excess of any recorded liabilities we provide an estimate of the possible loss or range of loss or a statement that such an estimate cannot be made. While litigation is inherently unpredictable, we believe that we have valid defenses with respect to legal matters pending against us. Our revenue generating activities are subject to Value Added Tax, or VAT. The U.K. tax authorities have challenged our VAT treatment of certain of these activities. As a result, we have estimated contingent losses totaling £29.7 million as of June 30, 2012 that are not accrued for, as we deem them to be reasonably possible, but not probable, of resulting in a liability. We currently expect an initial hearing on these matters to take place in 2013.
VMIH
Loss Contingencies [Line Items]
Contingent Liabilities	Contingent Liabilities We are involved in lawsuits, claims, investigations and proceedings, consisting of intellectual property, commercial, employee and employee benefits which arise in the ordinary course of our business. In accordance with the Contingencies Topic of the FASB ASC, we recognize a provision for a liability when management believes that it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. We believe we have adequate provisions for any such matters. We review these provisions at least quarterly and adjust these provisions to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular case. Additionally, when we believe it is at least reasonably possible that a liability has been incurred in excess of any recorded liabilities we provide an estimate of the possible loss or range of loss or a statement that such an estimate cannot be made. While litigation is inherently unpredictable, we believe that we have valid defenses with respect to legal matters pending against us. Our revenue generating activities are subject to Value Added Tax, or VAT. The U.K. tax authorities have challenged our VAT treatment of certain of these activities. As a result, we have estimated contingent losses totaling £29.7 million as of June 30, 2012 that are not accrued for, as we deem them to be reasonably possible, but not probable, of resulting in a liability. We currently expect an initial hearing on these matters to take place in 2013.
VMIL
Loss Contingencies [Line Items]
Contingent Liabilities	Contingent Liabilities We are involved in lawsuits, claims, investigations and proceedings, consisting of intellectual property, commercial, employee and employee benefits which arise in the ordinary course of our business. In accordance with the Contingencies Topic of the FASB ASC, we recognize a provision for a liability when management believes that it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. We believe we have adequate provisions for any such matters. We review these provisions at least quarterly and adjust these provisions to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular case. Additionally, when we believe it is at least reasonably possible that a liability has been incurred in excess of any recorded liabilities we provide an estimate of the possible loss or range of loss or a statement that such an estimate cannot be made. While litigation is inherently unpredictable, we believe that we have valid defenses with respect to legal matters pending against us. Our revenue generating activities are subject to Value Added Tax, or VAT. The U.K. tax authorities have challenged our VAT treatment of certain of these activities. As a result, we have estimated contingent losses totaling £29.7 million as of June 30, 2012 that are not accrued for, as we deem them to be reasonably possible, but not probable, of resulting in a liability. We currently expect an initial hearing on these matters to take place in 2013.

The entire disclosure for commitments and contingencies.

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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+ Details

VIRGIN MEDIA INVESTMENT HOLDINGS LTD 10-Q